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HomeMy WebLinkAboutB14-0264_cut sheets part2_1438973880.pdfY8610U INTERMITTENT PILOT RETROFIT KIT 68-0291—03 22 ANSI STANDARDS Exhibit A Recommended Procedure for Safety Inspection of an Existing Appliance Installation as a Preliminary Step to Applying an Automatic Intermittent Pilot System The following procedure is intended as a guide to aid in determining that an appliance is properly installed and is in a safe condition for continuing use. This procedure is predicated on central furnace and boiler installations equipped with an atmospheric gas burner(s) and not of the direct vent type. It should be recognized that generalized test procedures cannot anticipate all situations. Accordingly, in some cases, deviation from this procedure may be necessary to determine safe operation of the equipment. 1.This procedure should be performed prior to any attempt at modification of the appliance or the installation. 2.If it is determined there is a condition which could result in unsafe operation, the appliance should be shut off and the owner advised of the unsafe condition. The following steps should be followed in making the safety inspection: 1.Conduct a Gas Leakage Test of the appliance piping and control system downstream of the shut-off valve in the supply line to the appliance. 2.Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restrictions, leakage or corrosion or other deficiencies which could cause an unsafe condition. 3.Shut off all gas to the appliance and shut off any other fuel-burning appliance within the same room. Use the shutoff valve in the supply line to each appliance. If a manual gas valve is not in the gas supply line within 6 feet of the appliance in an acces- sible location, one shall be installed. 4.Inspect burners and crossovers for blockage and corrosion. 5.Applicable only to warm air heating appliances. Inspect heat exchangers for cracks, openings or excessive corrosion. 6.Applicable only to boilers. Inspect for evidence of water or combustion product leaks. 7.Insofar as is practical, close all building doors and windows and all doors between the space in which the appliance is located and other spaces of the building. Turn on clothes dryers. Turn on any exhaust fans, such as range hoods and bath- room exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers. If, after completing steps 7 through 12, it is believed sufficient combustion air is not available, refer to 1.3.4 of the National Fuel Gas Code (Z223.1) for guidance. 8.Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously. 9.Determine the following: a. Determine that the pilot is burning properly and that main burner ignition is satisfactory by interrupting and re-establishing the electrical supply to the appliance in any convenient manner. b. Determine manifold pressure in order to match input after the new control is installed. 10.Perform the following tests: a. Visually determine that main burner gas is burning properly; i.e., no floating, lifting or flashback. Adjust the primary air shutter(s) as required. b. If appliance is equipped with high and low flame control or flame modulation, check for proper main burner operation at low flame. 11.Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use a draft gauge, the flame of a match or candle, or smoke from a cigarette, cigar or pipe. 12.Return doors, windows, exhaust fans, fireplace dampers and all other fuel-burning appliances to their previous conditions of use. 13.Applicable only to warm air heating appliances. Check both limit controller and fan controller for proper operation. Limit con- troller operation can be checked by temporarily disconnecting the electrical supply to the blower motor and determining that the limit control acts to shut off the main burner gas. 14.Applicable only to boilers: a. Determine that the circulating water pumps are in operating condition. b. Test low water cutoffs, automatic feed controls, pressure and temperature limit controls and relief valves in accordance with the manufacturer’s recommendations and instructions to determine they are in operating condition. Exhibit A of ANSI Standard Z21.71 for Automatic Intermittent Pilot Ignition Systems for Field Installation. Page 34 Y8610U INTERMITTENT PILOT RETROFIT KIT 23 68-0291—03 Exhibit B Procedure for Installing Automatic Intermittent Pilot Systems Prior to beginning this procedure, a preliminary examination of the appliance and the automatic intermittent pilot system should be made to determine that the automatic intermittent pilot system can be properly applied to the appliance. This procedure is intended as a guide to aid in safely installing a listed automatic intermittent pilot system on an existing listed appliance equipped with an atmospheric gas burner(s) and not of the direct vent type. This procedure is based on the assumption that the history of the specific installation has been one of safe and satisfactory operation. This procedure is predicated on central furnace and boiler installations, and it should be recognized that generalized procedures cannot anticipate all situations. Accordingly, in some cases, deviation from this procedure may be necessary to determine safe operation of the equipment. The following steps should be followed in making the modifications: 1.Perform a safety inspection of the existing appliance installation. See Exhibit A for a recommended procedure for such a safety inspection. 2.Shut off all gas and electricity to the appliance. To shut off gas, use the shutoff valve in the supply line to the appliance. If a manual gas valve is not in the gas supply line within 6 feet of the appliance in an accessible location, one shall be installed. Do not use the shutoff valve which is provided as part of a combination control. 3.Install the automatic intermittent pilot system in strict accordance with the manufacturer’s installation instructions. 4.Turn on all gas and electricity to the appliance. 5.Determine that the appliance transformer has adequate capacity by following the steps outlined below: a. Compute the approximate current draw by adding the current draw of the automatic intermittent pilot system to (1) the current draw of the associated valving, and (2) the current draw of any relays or other devices operated by the trans- former. b. Multiply the total current draw as computed above by 24 V to determine the total VA (volt-ampere) required. c. The total VA (volt-ampere) required should be equal to or less than the VA rating of the transformer. d. If the total VA (volt-ampere) required is greater than the VA rating of the transformer, the transformer must be replaced with a Class 2 transformer of adequate rating. 6.Check the heat anticipator in the comfort thermostat to determine if it is properly adjusted to the current draw of the control system. Follow the thermostat manufacturer’s instructions. 7.Make certain wiring connections are tight and wires are positioned and secured so they will not be able to contact high tem- perature locations. 8.Conduct a Gas Leakage Test of the appliance piping and control system downstream of the shut-off valve in the supply line to the appliance. 9.Perform the following: a. Adjust the thermostat to its highest temperature setting, and test manifold pressure and adjust the pressure regulator to match original input as required (refer to Exhibit A, step 9b). b. Visually determine that main burner is burning properly; i.e., no floating, lifting or flashback. Adjust the primary air shut- ter(s) as required. 10.If the appliance is equipped with high and low flame control or flame modulation, check for proper main burner operation at both high and low flame. 11.Determine that the pilot is igniting and burning properly and that main burner ignition is satisfactory by interrupting and rees- tablishing the electrical supply to the appliance in any convenient manner. Make this determination with the appliance burner both cold and hot. Perform this step as many times as is necessary to satisfy yourself that the automatic intermittent pilot system is operating properly. 12.Test the pilot safety device (1) to determine if it is operating properly, and (2) for turndown characteristics according to the manufacturer’s installation instructions. No adjustments should be made other than those recommended by the system man- ufacturer. 13.Sequence the appliance through at least three operating cycles. 14.Applicable only to furnaces. Check both the limit controller and the fan controller for proper operation. Limit control operation can be checked by blocking the circulating air inlet or temporarily disconnecting the electrical supply to the blower motor and determining that the limit controller acts to shut off the main burner gas. 15.Applicable only to boilers. a. Determine that the circulating water pumps are in operating condition. b. Test low water cutoffs, automatic feed water controls, pressure and temperature limit controllers and relief valves in accordance with the manufacturer’s recommendation to determine they are in operating condition. 16.Add the labels (see 1.6.1-n and -o) on the appliance. Exhibit B of ANSI Standard Z21.71 for Automatic Intermittent Pilot Ignition Systems for Field Installation. Page 35 Y8610U INTERMITTENT PILOT RETROFIT KIT Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2011 Honeywell International Inc. 68-0291—03 M.S. Rev. 02-11 Printed in U.S.A. Page 36 Page 37 USE SCREWS OR BOLTS THROUGH SLOTS (4) IN MOUNTING FEET SCREW TERMINALS FOR SECONDARY CONNECTIONS MOUNTING FOOT (2) LEADWIRES FOR PRIMARY CONNECTIONS M9161 PLATE MOUNTED AT CLAMP ON PRIMARY END BELL MOUNTING PLATE MOUNTING PLATE PLATE MOUNTED AT THE LAMINATIONS M9162 END BELL CLAMP SCREW AND CLAMP RAISED PORTION OF LARGE CENTER KNOCKOUT LEADWIRES FOR PRIMARY CONNECTIONS LEADWIRES FOR PRIMARY CONNECTIONS MOUNTING SCREW SCREW TERMINALS FOR SECONDARY CONNECTIONS SCREW TERMINALS FOR SECONDARY CONNECTIONS MOUNTING FEET ON "A" MODELS ONLY. 1 1 1 Page 38 M12126 M9188A WITH RAISED PORTION OF KNOCKOUTS FACING YOU: PRY UP TOP SECTION OF LARGE KNOCKOUT BY INSERTING SCREWDRIVER FIRST AT ONE SIDE OF SLOT AND THEN AT THE OTHER SIDE. 1. THEN PRY UP BOTTOM SECTION OF KNOCKOUT.2. REMOVE BOTH SECTIONS OF KNOCKOUT WITH PLIERS.3. SHADED AREAS REPRESENT KNOCKOUTS AND SCREW SLOTS USED WITH 2 X 4 INCH OR OCTAGONAL OUTLET BOXES. IMPO R T A N T MOUNT TRANS F O R M E R OTHER S I D E M9163 TRANSFORMER PLATE Page 39 VOLTAGE VARIES WITH MODEL 2 SECONDARY M22974 COMMON PRIMARY BLACK 120 V - WHITE 208 V - RED 240 V - ORANGE 277 V - BROWN 480 V - BLACK/RED 1 3 SINGLE VOLTAGE MODELS 208 V 2 SECONDARY COMMON PRIMARY BLACK ORANGE 1 3 208/240 VAC MODELS 240 V RED 208 V 120 V 2 SECONDARY COMMON PRIMARY BLACK ORANGE 1 1 SECONDARY CONNECTIONS ARE SCREW TERMINALS, 1/4 INCH QUICK-CONNECTS OR BLUE AND YELLOW LEADWIRES. BLACK IS COMMON WITH RESPECT TO THE TRANSFORMER WINDING ONLY AND NOT THE EXTERNAL CIRCUIT. SOME MODELS AVAILABLE WITH 1/4 INCH QUICK CONNECTS. 2 3 3 120/208/240 VAC MODELS 240 V RED WHITE COMMON BLACK 120 V WHITE 240 V ORANGE PRIMARY SECONDARY 3 1 2 120/240 MODELS Page 40 Q314 and Q327A Pilot Burners J. H. • Rev. 12-92 • © Honeywell Inc. 1992 • Form Number 69-0519—3 TRADELINE Application Pilot burners provide main burner ignition for standing pilot natural and LP gas systems. Used with a thermocouple to provide automatic pilot safety control. Used with a thermopile in a self-powered system. See Table 1 for model specifications. TABLE 1—MODEL SPECIFICATIONS. Primary Type of Pilot Tip Model Aerated Orifice Type Includes Q314A No Insert Target Includes natural and LP gas orifices, 1/4 in. compression fitting, “F,” “K,” or “L” tip styles, “B” mounting bracket, and “A” mounting bracket adapter. Q327A Yes Spud Target Includes natural and LP gas orifices, 1/4 in. compression fitting, and “B” mounting bracket with screws. Installation WHEN INSTALLING THIS PRODUCT… 1. Read these instructions carefully. Failure to follow instructions can damage product or cause a hazardous condi- tion. 2. Check ratings given in instructions and on product to make sure product is suitable for your application. 3. Make sure installer is a trained, experienced service technician. 4. After completing installation, use these instructions to check out product operation. WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Follow these warnings exactly. 1. Disconnect power supply before wiring to pre- vent electrical shock or equipment damage. 2. To avoid dangerous accumulation of fuel gas, turn off gas supply at appliance service valve before starting installation and perform Gas Leak Test after completion of installation. 3. Do not bend pilot tubing at the control or pilot after compression nut has been tightened. Gas leakage at the connection may result. Follow appliance manufacturer’s instructions if avail- able; otherwise, use instructions provided below. LOCATION 1. Position pilot burner for easy access, observation, and lighting. In replacement applications, replace pilot burner with an identical unit and position new pilot burner in the same location and orientation as the original pilot burner. 2. Mount pilot burner on main burner. Mounting surfaces other than the main burner can shift, bend, or warp as furnace expands and contracts while operating. See Fig. 1. 3. Mount pilot burner so the ignition flame remains properly positioned with respect to the main burner flame. See Fig. 2. 4. Supply pilot flame with ample air free of combustion products. 5. Do not impinge pilot flame on adjacent parts. Do not impinge main burner flame on pilot burner. 6. Do not expose pilot flame to falling scale which could impair ignition of main burner. 7. Do not expose pilot burner to main burner rollout while igniting or extinguishing. 8. Do not expose pilot flame to drafts that push or pull pilot flame away from the thermocouple or thermopile. Fig. 1—Mount pilot burner on main burner. PILOT BURNER/GENERATOR MUST BE RIGIDLY POSITIONED RELATIVE TO MAIN BURNER M1263 Page 41 2 CONNECT PILOT GAS TUBING 1. Cut tubing to desired length and bend as necessary for routing to pilot burner. Do not make sharp bends or deform tubing. Do not bend tubing at control after compression nut has been tightened, as this can result in gas leakage at connection. 2. Square off and remove burrs from end of tubing. 3. Push tubing into compression nut clearance hole until tubing bottoms. NOTE: When replacing a pilot burner or orifice, cut off old compression fitting and replace with new compression fitting provided with new pilot burner. Never use old compression fitting as it may not provide a gas-tight seal. See Fig. 3. 4. While holding tubing all the way in, engage threads and turn until finger tight. 5. Using a wrench, turn compression nut one turn beyond finger tight. DO NOT OVERTIGHTEN. 6. Connect other end of tubing to gas control according to gas control manufacturer instructions. Fig. 3—Always use new compression fitting. Fig. 2—Location of pilot burner. PILOT BURNER/ IGNITION- SENSOR JUST RIGHT PILOT BURNER/ IGNITION- SENSOR TOO LOW PILOT BURNER/ IGNITION- SENSOR TOO HIGH MAIN BURNER FLAME WILL IMPINGE ON IGNITION- SENSOR IGNITION FLAME WILL IMPINGE ON MAIN BURNER IGNITION FLAME JUST MISSES MAIN BURNER M3285 PILOT BURNER BODY TIGHTEN NUT ONE TURN BEYOND FINGER TIGHT FITTING BREAKS OFF AND CLINCHES TUBING AS NUT IS TIGHTENED TO GAS CONTROL M3295 INSTALL THERMOCOUPLE OR THERMOPILE PUSH-IN DESIGN 1. Insert thermocouple or thermopile tip into hole or barrel provided beneath pilot burner. See Fig. 4. 2. Push in firmly until thermocouple or thermopile is locked into place. ATTACHMENT NUT DESIGN 1. Insert thermocouple or thermopile tip into hole or barrel provided beneath pilot burner. See Figs. 4 and 5. 2. Engage attachment nut threads and tighten until ther- mocouple or thermopile is locked into place. Fig. 4—Installing thermocouple or thermopile. PILOT BURNER ASSEMBLY THERMOCOUPLE OR THERMOPILE PUSH-IN CLIP M3286 OPTIONAL ATTACHMENT NUT INSTALL BLEED GAS TUBING (if used): 1. Route bleed gas tubing from bleed tapping on gas control to the pilot burner. 2. Push clip into place. See Fig. 6. 3. Insert bleed gas tubing until 3/8 inch [10 mm] of tubing is above pilot burner bracket. Tip of bleed gas tubing must not extend into pilot flame. INSTALL “A” MOUNTING BRACKET ADAPTER (optional) To convert mounting bracket from “B” mounting bracket to “A” mounting bracket, install the “A” mounting bracket adapter to the pilot burner mounting bracket. Then install pilot burner to main burner. Fig. 5—Installing Q390 Thermocouple. SCREW-IN TYPE THERMOCOUPLE ATTACHMENT NUT M3269 ADAPTER PILOT BURNER ASSEMBLY Page 42 INSERT ORIFICE M27083 SPUD ORIFICE INSERT ORIFICE CROSS SECTION 3 69-0519—3 Fig. 7—Changing spud and insert orifices.Fig. 6—Bleed gas tube installation. THIS DIMENSION SHOULD BE MAXIMUM OF 3/8 INCH [9.5 mm] WHEN BLEED TUBE IS IN FINAL POSITION. BLEED TUBE CLIP M3284 1/8 IN. STEEL TUBING CHANGE INSERT ORIFICES (See Fig. 7) 1. Disconnect pilot tubing from the pilot burner and remove insert orifice. Sometimes a light force is required to remove the orifice. 2. Cut off old compression fitting. NOTE: When replacing an orifice, cut off old compression fitting and replace with a new compression fitting. Never use old compression fitting as it may not provide a gas- tight seal. See Fig. 3. 3. Square off end of pilot tubing and remove all burrs. 4. Insert new compression nut over pilot tubing and slide out of the way. 5. Insert new orifice into pilot burner and push pilot tubing into the pilot burner until it bottoms. 6. While holding tubing all the way in, slide compression fitting into place and engage threads. Turn until finger tight. 7. Using a wrench, tighten compression fitting one turn beyond finger tight. CHANGE SPUD ORIFICES (See Fig. 7) 1. Disconnect pilot tubing from orifice. 2. Unscrew old spud orifice and discard. 3. Cut off old compression fitting. NOTE: When replacing an orifice, cut off old compression fitting and replace with a new compression fitting. Never use old compression fitting as it may not provide a gas- tight seal. See Fig. 3. 4. Square off end of pilot tubing and remove all burrs. 5. Insert new compression nut over pilot tubing and slide out of the way. 6. Insert new orifice into pilot burner and tighten se- curely. 7. Push pilot tubing into orifice until it bottoms. 8. While holding tubing all the way in, slide compression fitting into place and engage threads. Turn until finger tight. 9. Using a wrench, tighten compression fitting one turn beyond finger tight. Startup and Checkout PERFORM GAS LEAK TEST WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Check for gas leaks with soap and water solution any time work is done on a gas system. GAS LEAK TEST: 1. Ensure that gas supply is turned on at the appliance service valve. 2. Paint pipe connections upstream of pilot burner with rich soap and water solution. Bubbles indicate gas leak. 3. If leak is detected, tighten pipe connections. 4. Stand clear of main burner while lighting to prevent injury caused from hidden leaks which could cause flashback in the appliance vestibule. Light main burner. 5. With main burner in operation, paint pipe joints (in- cluding adapters) and gas control inlet and outlet with rich soap and water solution. 6. If another leak is detected, tighten adapter screws, joints, and pipe connections. 7. Replace part if leak can not be stopped. ADJUST PILOT FLAME The pilot flame should envelop 3/8 to 1/2 in. [10 to 13 mm] of the thermocouple or thermopile tip. See Fig. 8. To adjust pilot flame: 1. Remove pilot adjustment cover screw from gas con- trol. 2. Turn inner pilot adjustment screw clockwise to decrease or counterclockwise to increase pilot flame. 3. Always replace pilot adjustment cover screw and tighten firmly after completing adjustment to ensure proper operation. Page 43 Service WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Perform Gas Leak Test anytime work is done to the system. PILOT OUTAGE 1. If pilot flame goes out during normal operation, but is properly adjusted, recheck Mounting and Location instruc- tions on page 1. 2. If all mounting and location instructions are followed but pilot continues to go out, construct shielding to protect pilot flame from main burner ignition and extinction and drafts. See Fig. 9. 3. Check pilot flame characteristics. • Check the pilot flame with the main burner operating. • Ensure the pilot flame continuously covers the tip of the thermocouple or thermopile, the spark gap and 3/8 to 1/2 in. [10 to 13 mm] of the ground rod. See Fig. 8. • Ensure the pilot flame is blue (a yellow tipped flame is acceptable on LP systems), soft and steady. See Fig. 9 for examples of possible pilot flame problems and their causes. • If pilot burner is damaged, replace it with an identical pilot burner and mount and position in the same location and orientation. 4 Fig. 8—Thermocouple or thermopile tip must be in pilot flame. THERMOCOUPLE OR THERMOPILE PROPER FLAME ADJUSTMENT 3/8 TO 1/2 INCH [10 TO 13 MILLIMETRES] M1973A IGNITE PILOT BURNER 1. Before lighting pilot burner, turn thermostat to its lowest setting. Wait for unburned gas to vent. NOTE: LP gas is heavier than air and will not vent upward. Smell for LP gas next to floor. If you smell gas, shut off the main valve in the gas piping, or, ON LP, AT THE TANK. Perform Gas Leak Test to recheck all connections. 2. Light pilot burner according to appliance manu- facturer’s instructions. Fig. 9—Examples of unsatisfactory pilot flames. PILOTSTAT SAFETY CONTROL POWER UNIT FAILURE 1. Ensure pilot flame is properly adjusted. 2. Ensure power unit connections clean and tight. 3. If power unit still fails to hold in, use the W129A Millivoltmeter to obtain the open and closed circuit voltage generated by the thermocouple or generator. 4. Compare measured open and closed circuit voltage values to Acceptable Range Charts in W129A Manual. 5. If W129A Millivoltmeter or other meter is not avail- able, replace thermocouple or thermopile. If this does not correct the condition, replace power unit. THERMOCOUPLE OR THERMOPILE PERFORMANCE Thermocouples and thermopiles require proper tempera- ture differential between the hot-junction (tip) and cold- junction (base) to provide satisfactory operation of gas con- trols. Thermocouples and thermopiles perform less effec- tively when exposed to excessive cold-junction or hot- junction temperatures. Excessive cold-junction temperatures can be caused by heat radiation from adjacent surfaces or high ambient air temperatures. Excessive cold-junction temperatures can be eliminated by shielding the pilot flame, see Fig. 10, or constructing a baffle to direct secondary air over the pilot burner base. Excessive hot-junction temperatures can be eliminated by proper pilot flame adjustment. To adjust pilot flame, see Adjust Pilot Flame section. LAZY YELLOW FLAME WAVING BLUE FLAME NOISY LIFTING BLOWING FLAME HARD SHARP FLAME SMALL BLUE FLAME CHECK FOR LACK OF GAS FROM: • CLOGGED ORIFICE FILTER • CLOGGED PILOT FILTER • LOW GAS SUPPLY PRESSURE • PILOT ADJUSTMENT AT MINIMUM CHECK FOR LACK OF AIR FROM: • LARGE ORIFICE • DIRTY LINT SCREEN, IF USED • DIRTY PRIMARY AIR OPENING, IF THERE IS ONE • PILOT ADJUSTMENT AT MINIMUM CHECK FOR: • EXCESSIVE DRAFT AT PILOT LOCATION • RECIRCULATING PRODUCTS OF COMBUSTION CHECK FOR: • HIGH GAS PRESSURE THIS FLAME IS CHARACTERISTIC OF MANUFACTURED GAS CHECK FOR: • HIGH GAS PRESSURE • ORIFICE TOO SMALL M3272 APPEARANCE CAUSE Page 44 PILOT TURNDOWN TEST (30 mV safety control systems) The Pilot Turndown Test assures that the pilot flame ignites the main burner within four seconds from the time gas reaches the main burner. In this test, the pilot flame is just sufficient enough to hold in the power unit or just above the point of flame extinction (whichever occurs at a higher pilot gas flow rate). 1. With the pilot and main burner operating, shut off the main burner by either lowering the thermostat temperature setting or turning the gas control knob to the PILOT position. NOTE: If using a Honeywell W129A Millivoltmeter, turn the pilot gas adjustment screw until the thermocouple open circuit voltage is 2 mV. Omit steps 2,3, and 4 and proceed with step 5. 2. Turn the p ilot gas adjustment screw clockwise until the pilot begins to decrease in size. Then, turn the pilot gas adjustment screw clockwise 1/4 turn a time (waiting one minute between each turn to allow the thermocouple to cool) until safety shutoff power unit just drops, causing safety shutdown. 5 69-0519—3 3. Turn pilot gas adjustment screw counterclockwise slightly. 4. Relight pilot burner. The power unit should hold in. 5. Turn gas control knob to ON position and set thermo- stat temperature setting above room temperature. Main burner should light within four seconds without flame rollout. If not, check pilot mounting and location instructions in Location section and repeat Pilot Turndown Test. 6. Readjust pilot burner flame. See Adjust Pilot Flame section. EFFECTIVE IGNITION TEST (750 mV SYSTEMS) The Effective Ignition Test assures that the pilot flame ignites the main burner within four seconds from the time gas reaches the main burner. In this test, the pilot flame is just sufficient to open the main gas valve. 1. Light the main burner according to the appliance manufacturer’s instructions and allow to burn at least five minutes. 2. Remove one thermostat lead (TH) at the gas control terminal. 3. Using the pilot gas adjustment screw, decrease the pilot flame until it begins to pull away from the thermopile. Allow thermopile to cool for one minute. 4. Temporarily jumper the thermostat terminals (TH) on the gas control. 5. If the main burner ignites, reduce the pilot flame by turning the pilot adjustment screw 1/4 turn at a time until the valve fails to pull in. Allow the thermocouple to cool at least one minute between each reduction in the pilot flame level. 6. Increase the pilot flame just enough to pull in the gas control main valve. 7. Jumper the thermostat terminals. The main burner should light within four seconds and without flame roll-out. If it does not, check the Location and Mounting instructions on page 1 and repeat steps 1 through 6. 8. If main burner still does not light, replace thermopile and repeat steps 1 through 6. 9. Remove the jumper to shut off the main burner. 10. Readjust pilot burner flame. See Adjust Pilot Flame section. 11. Reconnect the thermopile lead and ensure all connec- tions are correct and the system is functioning properly. Fig. 10—Proper shielding of pilot flame. M1273TYPICAL SHIELD Page 45 6 Page 46 7 69-0519—3Page 47 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 Printed in U.S.A. QUALITY IS KEY Page 48 3903001 05.12 Installation & Operating Manual USA CAN PDS 1 Proven Draft Switch ENERVEX Inc. 1685 Bluegrass Lakes Pkwy. Alpharetta, GA 30004 P: 770.587.3238 F: 770.587.4731 T: 800.255.2923 info@enervex.com www.enervex.com Job Name: Installer: Installation Date: Product Information Mechanical Installation Electrical Installation ........................ Chapter 1 + 2 ......................... Chapter 3 ............................. Chapter 4 .................. Chapter 5 READ AND SAVE THESE INSTRUCTIONS! Page 49 2 3903001 05.12 1. Product Information .............................................................................................................2 .............................................................................................................2 .............................................................................................................3 .............................................................................................................4 .............................................................................................................4 1. Product Information 1.1 Function The PDS 1, Proven Draft Switch, is a fixed position differential pressure switch that is used in conjunction with ENERVEX’s Mechanical Draft Systems for insufficient draft protection. If an unsafe draft condition occurs, whether this is caused by mechanical or electrical failure, the switch will shut down the heating appliance. It is typically used with gas or oil fired appliances where it can be interlocked with the gas supply valve or the safety or control circuit of the appliance. The enclosure, the switch housing and the internal switch are made of polycarbonate. The diaphragm is The switch is UL recognized product Standard The PDS shipment contains: - 1 PDS 1 Differential Pressure Switch - Duct Kit consisting of stack probe with mounting flange and 6 ft silicone tubing If other components are shipped, they will appear as separate items on the shipping packing list. 1.3 Warranty PDS 1 Maximum Load V 1x120 VAC Amperage A 3 Range of Operation inWC/Pa .05 to .50/13 to 135 Temperature Limits oF/oC -40 to +190/ -40 to +88 Max. Pressure PSI/mbar 3 / 207 Wiring Connections 1/4” Solderless Quick Con- nect Terminals Pressure Connections Two plastic tubes, outside diameter of 1/4” (6.0mm) Weight oz. / kg 9.6 / 0.275 ENERVEX PDS 1 5.12” (130 mm) 3.70” (94 mm) 3.19” (81 mm) Page 50 3 3903001 05.12 The PDS 1 is for indoor installation only. The PDS 1 must be installed in a vertical position with the pressure connect the tubing from the probe onto the port marked accessible through the small of the plastic enclosure. Connect tubing to the NEGATIVE (-) port on the PDS. Factory wiring comes with three wires that are already crimped onto the PDS. The purpose of these wires is to provide a point in which you can extend the length of the wire by using wire nuts and additional wire (not provided). A stack probe is used with ENERVEX Proven Draft Switches (PDS). The PDS 1 monitors the pressure inside the stack and signals the control to shut down the probe must be installed between the appliance and the exhaust fan. For all installations, the stack probe must be placed of the probe. Locate the probe at least the distance “A” away from any elbows or tees in the stack. prevent condensation from entering the probe or PDS when installed on a horizontal stack, the probe must be installed above the centerline of the stack. For installed as close to the exhaust fan as possible. ENERVEX ENDURA PLASTICS XP042105-1-1 REV A 0.05” WC PR MOUNT DIAPHRAGM VERTICAL URMounting holes Connection for tubing at the bottom of the enclosure BRACKET ASM. SELF TAPPING SCREWS (RECOMMEND 1/4-20 OR M6) (NOT PROVIDED) GASKET PROBE FERRULE END CAP Page 51 ENERVEX Inc. 1685 Bluegrass Lakes Pkwy. Alpharetta, GA 30004 P: 770.587.3238 F: 770.587.4731 T: 800.255.2923 info@enervex.com www.enervex.com 3903001 05.12 For the PDS to function properly, the probe must be placed in a location that can produce at least 0.05 inWC in the stack. In order to produce an accurate the stack wall (it should never extend more than 1/16” beyond the wall). For a To mount the probe, drill a clearance hole through the stack wall(s). Insert the probe and attach thebracket to the stack using (2) customer provided self-tapping machine screws. Tighten the end cap to compress the ferrule and permanently install the stack probe. Attach the supplied silicon tubing at the other end of the probe. The PDS 1 must be wired in a Normally Open (NO) position when used with a mechanical draft system. Make sure to observe the electrical rating of the switch as shown on page 2. Please refer to the wiring diagram enclosed with the mechanical draft system. The pressure switch has a fixed pressure setting of .05” +/- .03” W.C. If the switch will not stay closed while the appliance is operating properly, you may need to increase the fan speed or move the probe closer to the vent termination. However, always make sure the draft at the appliance outlet stays within the manufacturer’s specified range. Under-drafting and over-drafting can cause damage to the appliance. Start the heating appliance(s) and the mechanical draft system and make sure the PDS 1 stays closed. Turn off the mechanical draft system. After less than 60 seconds all appliances should be shut down by the switch. Page 52 3916067 01.13 Installation & Operating Manual USA CAN ADC100 Draft Control ENERVEX Inc. 1685 Bluegrass Lakes Pkwy. Alpharetta, GA 30004 P: 770.587.3238 F: 770.587.4731 T: 800.255.2923 info@chimneyfans.com www.chimneyfans.com Job Name: Installer: Installation Date: Product Information Mechanical Installation Electrical Installation Start Up and Configuration Maintenance and Troubleshooting .......................... Chapter 1+2 ......................... Chapter 3 ............................. Chapter 4 .................. Chapter 5 ...... Chapter 6 READ AND SAVE THESE INSTRUCTIONS! Page 53 2 3916067 01.13 How to use this manual This installation manual does not contain any system design documentation. System design documentation is available from any authorized ENERVEX representative. Accessories, fans and variable frequency drives are not covered by this manual. Please refer to these component’s individual manuals. 1. Product Information 1.1 Function ...............................................................................................3 1.2 Shipping ...............................................................................................3 1.3 Warranty ...............................................................................................3 2. Specifications 2.1 Dimensions & Capacities ......................................................................4 3. Mechanical Installation 3.1 Location ................................................................................................5 3.2 Mounting the Control Unit ....................................................................5 3.3 Connection of the Proven Draft Switch .................................................6 3.4 Installation of the Chimney Probe .........................................................6 3.5 Adjusting the Fan Speed and Post Purge Time ....................................7 4. Electrical Installation 4.1 General ................................................................................................8 4.2 Connection Diagram ............................................................................9 4.3 Wiring of a Gas Fireplace ...................................................................10 4.4 Wiring of a Gas Fireplace With a Damper ..........................................11 4.5 Wiring of 3-Phase Fan .......................................................................12 5. Startup and Configuration 5.1 General ..............................................................................................13 5.2 Sequence of Operation ......................................................................14 5.3 Operating Pressure ............................................................................15 6. Maintenance and Troubleshooting ...........................................................................................................15 TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: Caution: Indicates an imminent hazardous situation which, if not avoided, may result in personal injury or property damage. Symbol Legend: The following terms are used throughout this manual to bring attention to the presence of potential hazards or to important information concerning the product. Danger: Indicates an imminent hazardous situation which, if not avoided, will result in death, serious injury or substantial property damage. 1. Use this unit in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed on the front of the manual. 2. Before servicing or cleaning the unit, switch off at service panel and lock service panel to prevent power from being switched on accidentally. 3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with applicable codes and standards. 4. Follow the appliance manufacturer’s guidelines and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities. 5. This unit must be grounded. Page 54 3 3916067 01.13 1. Product Information 1.1 Function Use The ENERVEX ADC100 Draft Control is a fan speed and appliance control used to control draft for a gas appliance such as a fireplace, stove or furnace. It may be interlocked with the appliance and is for use in systems where modulation is not required. It controls the speed of a fan to maintain proper draft and pressure in a chimney system. The ADC100 is for use with ENERVEX model RS or GSV fans and is a component in the residential EcoDamper.. Function The ADC100 control comes with the PDS1. The PDS is a required safety function used to ensure a negative pressure is maintained in the chimney. It also prevents appliance operation during an electrical or mechanical failure in the system. The ADC100 can operate the chimney fan in manual or automatic mode. Manual mode allows the user to adjust the speed of the fan at any time using the potentiometer on the board. In Automatic Mode, the ADC100 will ignore the potentiometer and ramp the fan up until the PDS closes. If the PDS opens, the control will ramp up the fan until there is enough draft to re-close the switch. The ADC100 can be interlocked with up to two appliances. Connections are made at the Auxiliary In and Auxiliary Out terminals. A 24VDC out connection is available. When an appliance is interlocked to the control, a post-purge function becomes available. The post purge keeps the fan running for a set time after the last appliance shuts down to evacuate any remaining flue gases. The post purge time on the ADC100 is adjustable from 0-3 minutes via a potentiometer on the control board. The damper relay allows a damper actuator to be interlocked directly to the control. The control ensures that the damper is open before releasing the appliance for operation. If at any point the control has sensed total failure, the ADC100 will go into an alarm for 30 seconds and will attempt a retry. In the event of a mechanical or electrical failure, the damper fails to the open position. Construction The housing is NEMA 1 rated ABS plastic. Code Compliance System installation must conform to the requirements of the authority having jurisdiction. When required by the authority having jurisdiction, the installation must also conform to the NFPA31, NFPA54 or NFPA211. All electrical wiring must be in accordance with the requirements of the authority having jurisdiction or, in absence of such requirements, with the National Electric Code, NFPA 70. 1.2 Shipping ADC100 includes the control unit, PDS1, stack probe and silicone tubing. * If other components are shipped, they will appear as separate items on the packing list. 1.3 Warranty 2-Year Factory Warranty. Complete warranty conditions are available from ENERVEX, Inc. Page 55 4 3916067 01.13 2. Specifications 2.1 Dimensions & Capacities ADC100 Control Power supply V 1x120VAC Amperage A 6.3 Operating temperature °F/°C -4 to 122 / -20 to 50 Control signal mA max. 10 Control relay Max. 120 VAC / 8A Output VAC 10-120 VDC 0-10 Post Purge Time 0-3 Minutes Alarm Delay Time 15 Seconds Dimensions A in/mm 9.6 / 244 B in/mm 6.3 / 160 C in/mm 3.5 / 90 Weight lbs/kg 2.6 / 1.2 Chimney Probe Dimensions D in/mm 4.25 / 108 E in/mm 3.50 / 89 B A C ADC100 E D ADC100 Page 56 5 3916067 01.13 3. Mechanical Installation 3.1 Location The ADC100 Control Unit must be installed indoors. As shown in the diagram below, the control will be wired directly to a 120/1/60 VAC power supply. The control will also be connected to the fan, appliance and damper (if used). For detailed wiring information, see Chapter 4. 3.2 Mounting the Control Unit The ADC100 control may be mounted directly to a wall. To mount, remove the cover and locate the (4) mounting holes. Using the hole-pattern shown below, mount the control using #6 screws. Once it is attached, wire the unit in accordance with Chapter 4. ADC100 ENERVEX ENERVEX ADC100 PDS1 ADC100 DAMPER(SOLD SEPARATELY) Fig. 1 4 MOUNTING HOLES 5.0 in (127 mm) 8.9 in (227 mm) Fig. 2 Page 57 6 3916067 01.13 3.3 Connection of the Proven Draft Switch and Stack Probe The Proven Draft Switch (PDS) must be installed indoors, in the vertical position (pre-drilled knockouts face down). Mount the control upright to a wall or other flat surface. Do NOT lay the control down or mount horizontally. A Proven Draft Switch (PDS) must be used with the ADC100 control as a system safety device. The PDS monitors the pressure inside the stack and signals the control to shut down the appliance if insufficient draft exists. A stack probe senses the pressure read by the PDS and is connected via silicone tubing. The silicone tubing supplied with the PDS should be connected to the NEGATIVE (-) port of the PDS. This is the bottom port on the switch. The standard tube length is 6 feet. The distance can be extended up to 25 feet by using 1/4” rigid plastic or copper tubing as temperature allows (not supplied). 3.4 Installation of the Chimney Probe The probe must be installed between the appliance and the exhaust fan. If a damper is used in the system, the probe should be installed between the appliance and damper. Locate the probe at least a distance three (3) vent diameters away from any elbow, tee or damper. For fireplace installations, the probe should be installed close to the fan inlet. See Fig. 5. To produce an accurate pressure reading, the probe should be installed flush with the inner wall of the chimney or stack. If double walled stack is used, the probe should be flush with the inner most wall. + - NEGATIVE PRESSURE PORT C NC NO Fig. 3 DAMPER CHIMNEY PROBE CHIMNEY PROBE Fig. 4 Page 58 7 3916067 01.13 3.5 Adjusting the Fan Speed and Post Purge Time There are two potentiometers located on the main control board of the ADC100. To increase the fan speed, rotate the potentiometer labeled Fan Spd clockwise. Alternately, rotating the potentiometer counterclockwise will decrease the fan speed. In Manual mode, the potentiometer can be adjusted at any time during normal operation to increase or decrease the fan speed. When the control is in Automatic mode, the potentiometer is only used to set the initial speed of the fan. After that, the control will automatically adjust the fan speed to ensure the PDS stays closed during appliance operation. A second potentiometer, labeled PG Time, is located on the bottom right corner of the control board. The post purge time is adjustable from 0 (no post purge) to 3 minutes. Turning the knob clockwise increases the post purge time while turning it counter-clockwise decreases the time. Fig. 5 Purge Time Fan Speed Page 59 8 3916067 01.13 4. Electrical Installation 4.1 General Danger: Turn off electrical power before servicing. Contact with live electric components can cause shock or death. ADC100 is designed for 1x120VAC power supply only. The designations for each terminal on the control board are shown below. Note that some installations may not require the use of all terminals. Also shown in this section is a general connection diagram for an ADC100 control system. Terminal Use Terminal Use 1 Power Supply - L1 14-15 Damper Relay 2 Power Supply - N 16-17 Damper Prove 3 Power Supply - Ground 18-19 VFD Relay 4 Chimney Fan- L1 20 0-10 VDC Output 5 Chimney/Exhaust Fan - N (regulating) 21 0 VDC Output (Gnd) 6 Chimney/Exhaust Fan- Ground 22-23 Auxiliary Appliance Output 1 7 + 24 VDC Out (Max Amperage 250 VAC 8 A) 8 Ground (-24 VDC) Out 24-25 Auxiliary Appliance Input 2 9-10 Auxiliary Appliance Input 1 (10-240 VAC or 5-30 VDC) (10-240 VAC or 5-30 VDC) 26 XTP- +24 VDC Out - Not Applicable 11 PDS- Normally Open 27 XTP In (0-10 VDC) - Not Applicable 12 PDS- Normally Closed 28 XTP In (0 VDC) - Not Applicable 13 PDS- Common 29-30 Auxiliary Appliance Output 2 (Max Amperage 250 VAC 8 A) Fig. 6 +24V 0-10 GND XTP 26 27 28 Page 60 9 3916067 01.13 ADC 100 To Fireplace ENERVEX Fig. 7 4.2 Connection Diagram The connection diagram shown in Fig. 7 below shows typical connections for a single phase fan. If a 3-phase fan is used, a VFD must be connected between the fan and control. Page 61 10 3916067 01.13 ADC 100 XTP 26 27 28 4.3 Wiring of a Gas Fireplace To interlock the ADC100 with a gas fireplace as shown in Fig. 8, connect the Auxiliary In terminals 9 and 10 on the control board to a wall switch. Either by using line voltage or use board voltage from terminals 7 and 8 as depicted in figure 8. Connect the gas valve or ignition to Auxiliary Out at terminals 22 and 23. The Auxiliary Out is a normally open dry contact that closes when the PDS closes and releases the fireplace for operation. The Auxiliary In terminals are rated for maximum 250/125 VAC/VDC. Place a jumper between terminals 16 and 17 if the damper is not used. Note: See Fig. 10 in Section 4.5 for connection of 3-phase fan with VFD. Fig. 8 Page 62 11 3916067 01.13 4.4 Wiring of a Gas Fireplace with a Damper To interlock the ADC100 with a gas fireplace as shown in Fig. 9, connect the Auxiliary In terminals 9 and 10 on the control board to a wall switch. Either by using line voltage or use board voltage from terminals 7 and 8 as depicted in figure 8. Connect the gas valve or ignition to Auxiliary Out at terminals 22 and 23. The Auxiliary Out is a normally open dry contact that closes when the PDS closes and releases the fireplace for operation. The Auxiliary In terminals are rated for maximum 250/125 VAC/VDC. NOTE: If an electronic ignition control is used with the fireplace, do NOT interlock it with damper actuator. Damper actuator should interlock with the ADC100 control only. To interlock the damper to the control, connect the actuator to terminals 14 and 15 as shown in Fig. 9. The actuator must include an endswitch to enable the damper prove function. The damper prove function is a dry contact that closes when the damper proves open. Connect the Common and Normally Open terminals of the actuator endswitch to terminals 16 and 17 on the board. Note: See Fig. 10 in Section 4.5 for connection of 3-phase fan with VFD. ADC 100 XTP 26 27 28 Fig. 9 Page 63 12 3916067 01.13 4.5 Wiring a 3-Phase Fan Connect a 3-phase fan to the control system via a variable frequency drive (VFD). The VFD receives external 3-phase power (208-230 or 400-480 VAC). A 0-10 VDC signal from the ADC100 is converted to a 0-60 Hz signal from the VFD to modulate the fan speed. Any appliance(s) or damper should be connected as shown in Fig 8 and 9. ADC 100 XTP 26 27 28 Fig. 10 Page 64 13 3916067 01.13 5. Startup and Configuration 5.1 General Dip switches are located on the control board to allow the user to specify certain functions of the ADC100. Verify settings using the table below. NOTE: Do NOT turn PDS check off unless requested by the factory technical support. DIP SWITCH NAME OFF ON DEFAULT POSITION 1 (Left) MANUAL RESET Automatic reset at power failure or insufficient draft Manual reset at power failure or insufficient draft OFF 2 (Center) MANUAL ADJ Automatic Mode-control speeds up fan if PDS opens during operation Manually adjust fan speed using potentiometer OFF 3 (Right) PDS CHECK* No monitoring to see if the PDS was in NC position prior to start The PDS must be in NC position prior to start ON Page 65 14 3916067 01.13 5.2 Sequence of Operation The sequence of operation flow chart is shown in figure 11 below. Fig. 11 Alarm Stages Flashes 1 - if damperprove does not close 90 seconds after auxin, go into alarm for 30 seconds, followed by a full retry Flashes 2 - if initial pdsprove does not close 180 seconds after damperprove, go into alarm for 30 seconds, followed by a full retry Flashes 3 - if pds loses proof for 15 seconds after initial pdsprove, auxouts de-energize, stay in alarm until pdsprove returns and auxout will re-energize Flashes 4 - if at any point after auxout proves the damperprove is removed, the board immedialy goes into alarm for 30 seconds, followed by a full retry Flashes 5 - *must have sw3 on* if pds is proved prior to auxin, board will go into alarm and no further states can be achieved until proof is removed Start 1. A call for heat from the appliance energizes the ADC100 inputs at terminals 9 and 10. Sequence 2. If a damper is connected, it begins to open. Once open, the damper prove contact closes (Terminals 16 and 17). 3. The ADC100 begins to ramp up the fan. 4. The Proven Draft Switch closes when adequate draft is achieved and ADC100 adjusts fan to speed setting on the potentiometer. 5. The ADC100 control releases the appliance for operation by closing dry contact between terminals 22 and 23 (and terminals 29 and 30). Operating Manual Mode: Sequence 1. Fan runs at a constant speed and can be adjusted during normal operation using the potentiometer. 2. If the Proven Draft Switch opens, a 15 second timing cycle starts. 3. If the Proven Draft Switch has not been made within 15 seconds, the auxiliary out contact opens and an alarm condition exists. 4. If the Proven Draft Switch closes, the control automatically resumes normal operation at set speed. Maintain Flashing State for 30 seconds Taking longer than 90 seconds Initial PDS Proof Taking longer than 180 seconds Loss of Damper Open Proof Aux In Enabled Damper Open Proof Initial PDS Proof Loss of PDS Proof for 15 seconds PDS Proof De- Energize All for Retry One Flash Alarm Two Flash Alarm Four Flash Alarm Aux Out Enabled Aux Out Disabled Three Flash Alarm Open Damper Idle State VFD and Fan Enabled Page 66 15 3916067 01.13 Observation Problem Solution Heating appliance/ fireplace cycle on and off - Potentiometer setting is too low - Turn potentiometer clockwise to increase fan speed. Fan is ‘hunting’ (increasing speed and then decreasing speed constantly) - Fan speed control is set too low. - Draft in chimney fluctuates. - Increase potentiometer setting. - Move Stack Probe closer to fan. Fan will not come on - ADC100 is not wired correctly - There may be sufficient natural draft - Fan is not working - Check wiring and correct - If the PDS is closed when the start signal is applied, sufficient natural draft exists for the fan to run. The ADC100 can run the fan even during these conditions if dipswitch #1 is set to the ON position to initialize a PDS check during the start up sequence. - Check the fan and if necessary, repair or replace. Verify all wiring to fan and control is correct and control is receiving external power. Heating appliance or fireplace will not come on - Fan is not working - No power to the ADC100 - Proven draft switch is not properly connected to the chimney. - PDS is not working - Check the fan and if necessary, repair or replace. Verify all wiring to fan and control is correct and control is receiving external power. - Make sure the probe is properly inserted into the stack, so the tip of the probe is flush with the inside of the chimney. - Replace relay or switch Heating appliance/ fireplace will not shut off - ADC100 is not wired correctly - Check wiring and correct. 6. Maintenance and Troubleshooting 5.3 Operating Pressure The operating pressure of the ADC100 Control is determined by the PDS switch. The PDS-1 used with the ADC100 has a pressure setting of 0.05” W.C. +/- 0.03” W.C. As long as the pressure is within this range, the fireplace and/ or appliance will continue to operate. Should the pressure fall outside of this range, it may be necessary to adjust the fan speed. The user may use a manometer or other device to read the pressure inside the stack. For fireplaces, a standard smoke/ flame test should be performed before normal operation (specified in appliance manual). This test will determine if the fan is running at the correct speed. Automatic Mode: 1. Fan runs at speed setting of the potentiometer but cannot be adjusted using the potentiometer during operation. 2. If the Proven Draft Switch opens, the fan begins to ramp up. 3. If PDS closes, fan speed remains at that speed. 4. If the PDS has not closed by the time the fan has ramped up to 100% speed, a 10 second timing cycle begins. 5. If PDS does not close within 15 seconds the auxiliary out contact opens and an alarm condition exists. 6. If the Proven Draft Switch closes while the control is in alarm, the fan will resume the original speed setting. Shutdown 1. The call for heat signal from the appliance is turned off. Sequence 2. Fan output continues at pre-set speed for the set post purge time (0-3 minutes). 3. Fan output is set to zero. Page 67 ENERVEX Inc. 1685 Bluegrass Lakes Pkwy. Alpharetta, GA 30004 P: 770.587.3238 F: 770.587.4731 T: 800.255.2923 info@enervex.com www.enervex.com 3916067 01.13 Page 68 3000270 03.05 Installation & Operating Manual USA CAN RS Chimney Fan for Gas & Oil Applications       EXHAUSTO Inc. 1200 Northmeadow Pkwy. Suite 180 Roswell, GA 30076 P: 770.587.3238 F: 770.587.4731 T: 800.255.2923 info@exhausto.com us.exhausto.com Job Name: Installer: Installation Date: Product Information Mechanical Installation Electrical Installation Start Up and Confi guration Maintenance and Troubleshooting ........................Chapter 1 + 2 ......................... Chapter 3 ............................. Chapter 4 ..................Chapter 5 ...... Chapter 6 Page 69