HomeMy WebLinkAboutBT-Indirect-WaterHeater-Installation%20R4.pdfBT INDIRECT SERIES WATER HEATERS
BTI 30, BTI 40, BTI 55, BTI 65, BTI 80, BTI 80-MAX, BTI 119-MAX
FOR SINGLE WATER HEATER INSTALLATIONS
For service or repairs to the water heater, call your heating contractor. Your water heater has been
manufactured to provide years of service. In order to insure proper service, the following information is
provided to assist in enabling the installation, operation, and maintenance of this water heater. When the
installation is completed, keep this manual with the water heater.
Product complies with NSF/ANSI 372 and conforms with lead content requirement for “lead-free” plumbing
DVGH¿QHGE\WKH&DOLIRUQLD9HUPRQW0DU\ODQGDQG/RXLVLDQDVWDWHODZVDQGWKH866DIH'ULQNLQJ:DWHU
Act in effect as of January 4, 2014.INSTALLATION AND OPERATING INSTRUCTIONSwww.ibcboiler.com
CAUTION
7KHKHDWWUDQVIHUPHGLXPPXVWEHZDWHURURWKHUQRQWR[LFÀXLG
having a toxicity rating or Class of 1, as listed in Clinical Toxicology
of Commercial Products, 5th edition.
2. The pressure of the heat transfer medium must be limited to a
maximum of 30 PSIG by an approved safety or relief valve.
INSTALLATION AND OPERATION INSTRUCTIONS2
BT INDIRECT SERIES – WATER HEATERS
IMPORTANT SAFETY INSTRUCTIONS
Failure to read and comply with all instructions and applicable National
and local codes may result in hazardous conditions that could result in
property damage and injury to occupants which in extreme cases might
result in death.
When using electrical appliances, basic safety precautions to reduce the risk
RI¿UHHOHFWULFVKRFNRULQMXU\WRSHUVRQVVKRXOGEHIROORZHGLQFOXGLQJ
READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER
1.Install or locate this water heater only in accordance with the provided
installation instructions
2.Use this water heater only for its intended use as described in this manual.
3.As with any appliance, close supervision is necessary when used by
children.
4.Do not operate this water heater if it is not working properly, or if it has
been damaged or dropped.
5.Installation, start-up and servicing of IBC Indirect Water Heaters must
be done with due care and attention, and should only be performed
E\FRPSHWHQWTXDOL¿HGOLFHQVHGDQGWUDLQHGSOXPELQJDQGKHDWLQJ
technicians. Contact nearest authorized service facility for examination,
repair, or adjustment.
SAVE THESE INSTRUCTIONS NEAR THE WATER HEATER FOR FUTURE REFERENCE
HAZARDS & PRECAUTIONS
WARNING
Points out a potentially hazardous
situation which must be avoided to
prevent serious injury or death.
CAUTION
Points out a potentially hazardous
situation which must be avoided to
prevent possible moderate injury
and/or property damage
NOTE
Points out installation, maintenance
and operation details that will result
LQHQKDQFHGHI¿FLHQF\ORQJHYLW\
and proper operation of your boiler.
DANGER
Points out an immediately
hazardous situation which must be
avoided in order to prevent serious
injury or death.
Included with Water Heater:
•Aquastat
•.ȍ6HQVRU
•,QVWUXFWLRQ0DQXDO
Not Included:
•Temperature and Pressure
5HOLHI9DOYH
•7DQN'UDLQ9DOYH
3INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
1.0 GENERAL INFORMATION.............................................4
2.0 PRE-INSTALLATION CONSIDERATIONS.................................6
2.1 Supplied with this Water Heater .....................................6
2.2 Important considerations Before Installation ...........................6
6\VWHP=RQH&RQWURO .............................................6
2.4 Priority or Non-Priority for Hot Water .................................7
2.5 Locating the Water Heater .........................................7
7HPSHUDWXUHDQG3UHVVXUH5HOLHI9DOYH...............................8
$GGLWLRQDO5HFRPPHQGHG&RPSRQHQWV...............................8
5HPRYLQJWKH([LVWLQJ'RPHVWLF:DWHU+HDWLQJ6\VWHP..................8
2.9 Water Quality ...................................................9
3.0 PIPING ...........................................................10
'RPHVWLF:DWHU3LSLQJ...........................................10
3.2 Boiler Water Piping..............................................10
=RQH&LUFXODWRU6\VWHP ..........................................10
=RQH9DOYH6\VWHP..............................................11
4.0 ELECTRICAL ......................................................12
4.1 Temperature Sensor.............................................12
4.2 Aquastat......................................................13
5.0 OPERATION .......................................................14
5.1 Startup .......................................................14
5.2 Temperature Adjustment..........................................14
6.0 MAINTENANCE ....................................................15
&KHPLFDO&OHDQLQJRIWKH+HDWLQJ&RLO...............................15
7.0 TROUBLESHOOTING ...............................................16
8.0 SCHEMATICS......................................................17
CONTENTS
INSTALLATION AND OPERATION INSTRUCTIONS4
BT INDIRECT SERIES – WATER HEATERS
CAUTION
Installation, start-up and
servicing of IBC boilers and
Water Heaters must be done
with due care and attention,
and should only be performed
E\FRPSHWHQWTXDOL¿HG
licensed and trained heating
technicians.
NOTE
The instructions in this
manual focus almost entirely
on installations where the
IBC water heater is used in
conjunction with a compatible
IBC Boiler. It is necessary
for the Installer and Designer
to read the IBC Boiler
manuals and application
QRWHVWRHQVXUHWKDW¿QLVKHG
installations will operate in
harmony and deliver optimal
HQHUJ\VDYLQJVDQGHI¿FLHQF\
IBC water heaters are
compatible with most other
boiler makes, and can be an
excellent choice, but Installers
and Designers must tailor their
GHVLJQVWRWKHVSHFL¿FFRQWURO
operational and installation
requirements of any alternate
Boiler.
NOTE
This equipment shall be
installed in accordance with
those installation regulations
required in the area where
the installation is to be made.
These regulations shall be
carefully followed in all cases.
Authorities having jurisdiction
shall be consulted before the
installations are made.
All wiring on water heaters
shall be in accordance with the
National Electrical Code and/or
local regulations.
GENERAL INFORMATION
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury, or loss of life. Read and understand the
entire manual before attempting installation, start-up, operation, or service.
Installation and service must be performed only by an experienced, skilled
installer or service agency.
This water heater contains very hot water under high pressure. Do not unscrew
DQ\SLSH¿WWLQJVRUDWWHPSWWRGLVFRQQHFWDQ\FRPSRQHQWVRIWKLVZDWHUKHDWHU
without positively assuring that the water is cool and has no pressure. Always
wear protective clothing and equipment when installing, starting up or servicing
this water heater to prevent scalding injuries. Do not rely on the pressure and
temperature gauges to determine the temperature and pressure of the water
heater. This water heater contains components that become very hot when the
boiler is operating. Do not touch any components unless they are cool.
Failure to follow all instructions in the proper order can cause personal injury
or death. Read all instructions, including all those contained in component
manufacturers’ manuals before installing, starting up, operating, maintaining,
or servicing the water heater.
CAUTION
To reduce the risk of excessive pressures and temperatures in this water
heater, install temperature and pressure protective equipment required by local
FRGHVEXWQROHVVWKDQDFRPELQDWLRQWHPSHUDWXUHUHOLHIYDOYHFHUWL¿HGE\D
nationally recognized testing laboratory that maintains periodic inspection of
production of listed equipment or materials, as meeting the requirements for
Relief Valves and Automatic Shutoff Devices for Hot Water Supply Systems,
ANSI Z21.22-latest edition. This valve must be marked with a maximum set
pressure not to exceed the marked working pressure of the water heater. Install
the valve into an opening provide and marked for this purpose in the water
heater, and orient it or provide tubing so that any discharge from the valve will
H[LWRQO\ZLWKLQLQFKHVDERYHRUDWDQ\GLVWDQFHEHORZWKHVWUXFWXUDOÀRRU
and cannot contact any live electrical part. The discharge opening must not be
blocked or reduced in size under any circumstances.
7KHKHDWWUDQVIHUPHGLXPPXVWEHZDWHURURWKHUQRQWR[LFÀXLGKDYLQJD
toxicity rating or class of 1, as listed in clinical Toxicology of Commercial
Products, latest edition.
The pressure of the heat transfer medium must be limited to the maximum of
30 psi.
DANGER
'2127VWRUHRUXVHJDVROLQHRURWKHUÀDPPDEOHYDSRUVRUOLTXLGVLQWKH
vicinity of this or any other appliance.
If you smell gas vapors, DO NOT try to operate any appliance - DO NOT touch
any electrical switch or use any phone in the building. Immediately, call the gas
supplier from a remote located phone. Follow the gas supplier’s instructions or
LIWKHVXSSOLHULVXQDYDLODEOHFRQWDFWWKH¿UHGHSDUWPHQW
1.0
5INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
MODEL TANK CAPACITY DIMENSIONS PIPING CONNECTIONS NPT REGULATION CONNECTION RELIEF VALVE CONNECTION APPROX. SHIPPING WEIGHT
USG HEIGHT INCHS DIAMETER INCHES
DOMESTIC WATER IN/OUT INCHES
BOILER WATER IN/OUT INCHES INCHES LBS
BTI 30 26.7 39.6 20.0 3/4 1 N/A 3/4 50.7
BTI 40 39.9 47.0 21.4 3/4 1 N/A 3/4 66.2
BTI 55 56.5 62.8 21.4 3/4 1 N/A 3/4 91.5
BTI 65 64.5 70.3 21.4 3/4 1 N/A 3/4 97.5
BTI 80 79.9 70.0 23.8 1 1-1/2 3/4 3/4 118.0
%7,0$;79.9 70.0 23.8 1 1-1/2 3/4 1 141.1
%7, 0$;114.6 65.75 28.9 1-1/2 1-1/2 3/4 1 177.5
Table 1: Dimensions and Capacities. Maximum Allowable Working Pressure – 150 psi, Hydrostatically tested to 300 psi.
Figure 1: Standard Unit - Dimensions and Connections
MODEL MAX. FIRST HOUR RATING
US GAL/HR @ 135°F
CONTINOUS RATING
US GAL/HR @ 135°F
BOILER OUTPUT
REQUIRED BTU/HR
BOILER WATER
FLOW GPM
PRESSURE DROP
THROUGH COIL
(FT. WATER)
BASED ON 180°F BOILER SUPPLY AND 58°F ENTERING COLD WATER
BTI 30 159 137 88,000 8 3
BTI 40 188 156 100,000 8 3
BTI 55 200 156 100,000 8 3
BTI 65 325 269 172,000 13 4
BTI 80 239 171 109,000 10 3
%7,0$;453 393 251,000 15 7
%7, 0$;482 393 251,000 15 7
Table 2: Ratings
INSTALLATION AND OPERATION INSTRUCTIONS6
BT INDIRECT SERIES – WATER HEATERS
2.1 Supplied with this Water Heater
7KH,%&:DWHU+HDWHULVVKLSSHGZLWKWKHIROORZLQJLWHPV
•Aquastat
•.ȍ6HQVRU
•,QVWUXFWLRQ0DQXDO
Not Included:
•7HPSHUDWXUHDQG3UHVVXUH5HOLHI9DOYH
•7DQN'UDLQ9DOYH
Inspect shipment carefully for signs of damage. All equipment is carefully
LQVSHFWHGDQGSDFNHG,%&¶VUHVSRQVLELOLW\FHDVHVXSRQGHOLYHU\RIWKHZDWHU
heater to the carrier in good condition. Any claims for damage or shortage, must
EH¿OHGLPPHGLDWHO\DJDLQVWWKHFDUULHUE\WKHFRQVLJQHH1RFODLPVIRUYDULDQFHV
RUVKRUWDJHVZLOOEHDOORZHGE\WKH0DQXIDFWXUHUXQOHVVWKH\DUHSUHVHQWHG
within 7 days after receipt of the equipment.
Installation must conform to the requirements of the authority having jurisdiction.
In the absence of such requirements, it must conform to the National Plumbing
&RGHDQGWKH1DWLRQDO(OHFWULFDO&RGH$16,1)3$1RFXUUHQWHGLWLRQ
2.2 Important Considerations Before Installation
1.Water heater sizing&KRRVHWKHZDWHUKHDWHUPRGHOEDVHGRQWKHH[SHFWHG
water usage for the given site. The average residence with one shower or
PRUHZLOOUHTXLUHD0RGHORUODUJHU)DFWRUVWKDWLQFUHDVHZDWHUGHPDQG
GUDPDWLFDOO\LQFOXGHKLJKÀRZVKRZHUKHDGVKRWWXEVDQGWKHXVHRIPRUH
than one shower at a time. Increase the tank size if these factors are present.
&DUHIXOO\UHYLHZWKH,%&:DWHU+HDWHUVSHFL¿FDWLRQVFRQWDLQHGKHUHLQDQG
FRQVXOW$6+5$(VL]LQJJXLGHVDQGRWKHUUHOLDEOHUHIHUHQFHV'LPHQVLRQV
weights, ratings, and capacities are outlined in Tables 1 and 2.
2.Boiler sizing. The water heater will provide the rated performance only if it is
used with a boiler with a heating capacity of at least as much as the capacity
ratings in Table 2. If the boiler has less capacity, the water heating output will
be reduced.
3.Circulator sizing. Refer to Table 2IRUWKHÀRZWKURXJKWKHZDWHUKHDWHUFRLO
DQGWKHSUHVVXUHGURSDWPLQLPXPÀRZ&DOFXODWHWKHSUHVVXUHGURSDFURVV
DOOSLSLQJDQG¿WWLQJVFRQQHFWHGWRWKHZDWHUKHDWHU]RQH%HVXUHWRLQFOXGH
all zone valves, check valves, and shut-off valves. It is recommended that the
water heater zone be piped with minimum 1” pipe around the entire loop on
typical residential sites.
2.3 System Zone Control
The water heater must be installed as a separate zone from the space heating
V\VWHP7KHZDWHUKHDWLQJ]RQH¶VSLSLQJDQGFLUFXODWRUPXVWEHVL]HGIRUWKH
PLQLPXPÀRZUDWHZLWKDOOWKH]RQHVLQXVHDQGDPD[LPXPÀRZZLWKRQO\WKH
water heater in use. This is the reason that the best method of zone control is
ZLWKFLUFXODWRUV7KHWKUHHPRVWFRPPRQV\VWHPVDUH
1.Zone Circulators. The space heating zones use a circulator for each zone,
and the water heater is controlled with an additional circulator.
NOTE
BT Indirect Series water
KHDWHUVFRPHZLWKD.ȍ
sensor and a standard
aquastat. The aquastat can
be used to create a call for
heat with most any boiler
manufacturers boiler (relays
may be required in some
FDVHV 7KH.ȍVHQVRU
will work with all IBC boilers
and may also be compatible
with some of the other boiler
manufacturers. Ensure
compatibility if using the
sensor with other boiler
manufacturers equipment.
NOTE
There are a number of
jurisdictional issues that may
prevent this water heater
from being accepted by local
Inspection Authorities. Issues
such as double-wall heat
exchanger requirements,
local or State registration
requirements, may cause an
installation to be rejected.
It is essential that the Installer
FKHFNZLWKORFDO2I¿FLDOV
to ensure acceptance of
this equipment prior to the
installation.
IBC will not accept liability
for any of these situations,
although we will assist in any
way we can, in order to help
gain acceptance.
PRE-INSTALLATION CONSIDERATIONS2.0
7INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
2.Hybrid System. The space heating zones use zone valves for each zone,
and the water heater is controlled with an additional circulator. See Section
8.0, Figure 2: Generic Boiler Piping Schematic – Zoned by Circulator.
3.Zone Valves. The space heating zones use zone valves for each zone, and
the water heater is controlled with an additional zone valve. Select a valve
ZLWKDORZSUHVVXUHGURSDQGDGHTXDWHSLSHVL]HWRDVVXUHPLQLPXPÀRZ.
2.4 Priority or Non-Priority for Hot Water
OPTION 1 – PRIORITY
The demand for space heating is interrupted until the hot water demand is
VDWLV¿HG7KLVRSWLRQSURYLGHVWKHPD[LPXPGHOLYHU\RIKRWZDWHU,%&ERLOHUV
DUHHDVLO\FRQ¿JXUHGWRRSHUDWHWKH+RW:DWHUDVDSULRULW\ORDG3ULRULW\LV
UHFRPPHQGHGZKHQ
1.The boiler output is less than 100,000 Btu per hour, or
2.The boiler output required to satisfy the hot water demand is more than 50%
of the boiler output needed to satisfy the space heating demand, or
3.When an interruption in space heating can be tolerated during long domestic
hot water draws.
The preferred strategy when using Priority is to use a dedicated load circulator
for domestic hot water generation. In most cases the delay in space heating will
not be noticed because of the rapid recovery of the water heater.
OPTION 2 – NON-PRIORITY
The boiler output is divided between space heating and water heating. Heating of
domestic hot water can be reduced during simultaneous space and water heating
demands. The maximum amount of reduction depends on the boiler output,
the number of space heating zones calling, the space heating target water
WHPSHUDWXUHDQGWKHDPRXQWRIERLOHUZDWHUÀRZVSOLWEHWZHHQWKHVSDFHKHDWLQJ
and zones and the water heater zone.
2.5 Locating the Water Heater
The water heater should be located in an area where water leakage from the tank
or connections will not result in damage to areas adjacent to the water heater or
WRORZHUÀRRUVRIWKHVWUXFWXUH:KHQVXFKDORFDWLRQFDQQRWEHDYRLGHGDVXLW-
able drain pan must be installed under the water heater, and the drain pan must
be connected to a drain.
The water heater should be installed as close to the boiler as is practical for easy
DFFHVVIRUVHUYLFH7KHXQLWLVGHVLJQHGIRULQVWDOODWLRQRQFRPEXVWLEOHÀRRULQJ
and in alcoves, closets, etc.
SURFACE DISTANCE FROM COMBUSTIBLES FOR SERVICE
Front 1" 24"
Rear, Right and Left Sides 1" 1"
Top 1” 1”
Bottom 0" 0”
Table 3: Clearances from heater jacket
WARNING
During operation, the T&P relief
valve may discharge large
amounts of steam and/or hot
water. Therefore, to reduce the
potential for bodily injury and
property damage, a discharge
OLQH0867EHLQVWDOOHGWKDWLW
1.is connected from the valve
outlet with no intervening
valve and directed downward
to a safe point of discharge.
2.allows complete drainage
of both the valve and the
discharge line.
3.is independently supported
and securely anchored so
as to avoid applied stress on
the valve.
4.is as short and straight as
possible.
5.terminates freely to
atmosphere where any
discharge will be clearly
visible and is at no risk of
freezing.
6.terminates with a plain end
which is not threaded.
7.is constructed of a material
suitable for exposure to
temperatures of 375°F or
greater.
8.is, over its entire length, of a
pipe size equal to or greater
than that of the valve outlet.
DO NOT CAP, PLUG OR
OTHERWISE OBSTRUCT THE
DISCHARGE PIPE OUTLET!
CAUTION
To avoid water damage from leaks,
a drain pan should be installed
under the water heater unless it is
installed in a location where leaks
will not cause property damage.
See Figure 6: Suggested Domestic
Water Piping.
If the discharge from a T&P relief
valve cannot be directed into a
drain or to an area where water
damage will not occur, a drain
pan capable of draining away the
IXOOFRQWLQXRXVGLVFKDUJHÀRZRI
the relief valve should
be installed.
INSTALLATION AND OPERATION INSTRUCTIONS8
BT INDIRECT SERIES – WATER HEATERS
2.6 Temperature and Pressure Relief Valve
1.6XSSO\D7HPSHUDWXUHDQG3UHVVXUH5HOLHI9DOYHUDWHGWR$16,=DQG
that has a rating greater than the gross input of the boiler connected to the
water heater.
2.,QVWDOOWKH7HPSHUDWXUHDQG3UHVVXUH5HOLHI9DOYHLQWKHWDSSLQJORFDWHGDW
WKHWRSRIWKHWDQNDQGODEHOHG5HOLHI9DOYH
3.3LSHWKHRXWOHWRIWKHUHOLHIYDOYHWRDQDSSURSULDWHORFDWLRQ )ORRU'UDLQRU
'UDLQ3DQ WHUPLQDWLQJZLWKLQRIDQDSSURSULDWHGUDLQORFDWLRQ3LSHWKH
relief valve piping down toward the outlet of the piping so that the piping and
the valve can fully drain. Never terminate the relief valve piping outdoors
where it may freeze.
4.'R127LQVWDOODVKXWRIIYDOYHEHWZHHQWKHZDWHUWDQNDQGWKHUHOLHIYDOYH
'R127SOXJWKHRXWOHWRIWKHUHOLHIYDOYH
2.7 Additional Recommended Components
1.Shut-off valves. Allows the isolation of the water heater from the boiler
system during service.
2.Tank drain valve. Installed at the bottom of the water heater to allow for
servicing and draining of the water heater.
3.8QLRQV$OORZVIRUHDV\ORFDWLQJRUUHPRYDO
4.9DFXXPEUHDNHU3URWHFWVWKHZDWHUKHDWHUIURPFROODSVHLIDKRWWDQNLV
valved off to service other components in the system.
5.Thermal expansion tank. If the water heater is installed in a closed water
VXSSO\V\VWHPVXFKDVDV\VWHPKDYLQJDEDFNÀRZSUHYHQWHULQWKHFROG
water supply line, the installation of a thermal expansion tank is required.
6.Refer to Figure 6 in this manual for suggested external components.
2.8 Removing the Existing Domestic Water Heating System
,IWKH,%&ZDWHUKHDWHULVEHLQJLQVWDOOHGLQDQROGHUK\GURQLFV\VWHPWKDWGRHV
QRWXVHDQ,%&ERLOHU
•External Tankless Heater'LVFRQQHFWDOOOLQHVWRWKHERLOHUDQGSOXJWKH
ERLOHU¿WWLQJV'LVFRQQHFWWKHH[WHUQDOKHDWHUIURPWKHERLOHUSLSLQJDQGWKH
domestic piping systems.
•Internal Tankless Heaters'LVFRQQHFWWKHGRPHVWLFSLSLQJ'RQRWSOXJ
WKHFROGZDWHURUWKHKRWZDWHU¿WWLQJVLQWKHLQWHUQDOWDQNOHVVFRLO/HDYHWKH
FRLOLQWKHERLOHUZLWKWKHFROGDQGKRWZDWHU¿WWLQJVRSHQWRSUHYHQWSUHVVXUH
build-up in the coil.
,IWKH,%&ZDWHUKHDWHULVEHLQJLQVWDOOHGWRUHSODFHDQHOHFWULFRUGLUHFW¿UHGJDVRU
RLOZDWHUKHDWHU 'LVFRQQHFWWKHZDWHUSLSLQJDQGHLWKHUVWULSEDFNWRWKHQHDUHVW
main line and cap off, or re-use for the new tank, whichever is appropriate.
•Electric Water Heater'LVFRQQHFWWKHHOHFWULFDOVXSSO\ZLULQJDQGUHPRYH
back to the breaker panel or terminate in an approved junction box. Work
must conform to all applicable electrical codes.
•Direct Fired Gas Water Heater'LVFRQQHFWWKHJDVVXSSO\OLQHWRWKH
heater, strip back to the nearest mains piping and cap off. Remove vent
connector back to the common venting system and seal off or abandon as
applicable. Work must conform to all applicable codes.
CAUTION
Do not operate the IBC water
heaters in areas where the
pH is above 8.0 or below
6.0, and/or with chloride
concentrations greater than
80 parts per million (ppm).
IBC’s standard warranty does
not cover problems caused
by improper water pH or
excessive levels of chlorides.
WARNING
There are a number of
conditions, including
improper control settings,
which could result in elevated
tank temperatures from
ANY type of water heater.
An overheating hazard can
result, potentially causing
serious personal injury and/or
property damage.
IBC recommends as a
minimum precaution, the
installation of a point of
source ASSE 1017 approved
thermostatic mixing valve on
the outlet of the water heater.
Local jurisdictions may
require more comprehensive
protective measures
depending on the place of
installation (ie. schools,
nursing homes, etc.). Check
with local Authorities for
direction.
CAUTION
When removing any fuel
burning appliance from a
common venting system, the
opening must be properly
sealed off and; if there are
remaining appliances still
using the common venting
system, the vent must be
examined to ensure that it is
not over-sized as a result of
having removed the old water
heater.
9INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
•Direct Fired Oil Water Heater'LVFRQQHFWWKHRLOVXSSO\OLQHWRWKHKHDWHU
strip back to the tank or nearest mains piping and cap off. If oil heating
system is to be abandoned completely, ensure proper removal and disposal
of old oil tank and remaining fuel oil. Remove vent connector back to the
common venting system and seal off or abandon as applicable. Work must
conform to all applicable codes.
2.9 Water Quality
Improper water quality will reduce the expected life of the water heater. Hard water,
sediment, high or low pH, and high levels of chlorides in the domestic water should
be avoided. Sediment and hard water will eventually coat the heating coil inside the
water heater and reduce the rate of hot water production and may, eventually cause
a failure. High or low Ph and/or high chloride concentrations will cause corrosion and
HYHQWXDOO\IDLOXUH$¿OWHULVVWURQJO\UHFRPPHQGHGZKHUHVHGLPHQWLVSUHVHQWLQWKH
water. A water softening system is recommended for areas with hard water. In an
area where the water quality is not known, a water quality test should be performed.
INSTALLATION AND OPERATION INSTRUCTIONS10
BT INDIRECT SERIES – WATER HEATERS
3.1 Domestic Water Piping
See Section 8.0, Figure 6: Suggested Domestic Water Piping.
1.'UDLQWKHGRPHVWLFZDWHUV\VWHP
•Shut off the cold water supply at the main shutoff valve.
•Open one or more faucets to relieve the pressure. Open the system
drain, leaving the faucets open.
2.3RVLWLRQWKHZDWHUKHDWHULQWKH¿QDOORFDWLRQ
•&RQQHFWWKHFROGZDWHUVXSSO\SLSLQJ
•Install piping onto cold inlet connection.
3.&RQQHFWWRFROGZDWHUVXSSO\FRQQHFWLRQXVLQJWKHIROORZLQJVXJJHVWHG
FRPSRQHQWVZKHUHDSSOLFDEOH $XQLRQDKHDWWUDSDVKXWRIIYDOYHDGUDLQ
YDOYHDQH[SDQVLRQWDQNDEDFNÀRZSUHYHQWHUDYDFXXPEUHDNHUDQGD
¿OWHU UHFRPPHQGHGWRSUHYHQWVHGLPHQWEXLOGXS
4.&RQQHFWWKHGRPHVWLFKRWZDWHUSLSLQJ
Install piping on to hot water supply connection using a union, a heat trap,
and a shut-off valve.
5.Pipe the relief valve discharge so that the discharge from the valve will exit
RQO\ZLWKLQLQFKHVDERYHRUDWDQ\GLVWDQFHEHORZWKHVWUXFWXUDOÀRRUDQG
cannot contact any live electrical part. The discharge opening must not be
blocked or reduced in size under any circumstances.
6.Fill the water heater tank.
•Open all faucets to allow air to purge from the tank and piping. Remove
screens on faucets.
•Open the domestic hot water shut-off valve.
•Slowly open the cold water inlet shut-off valve.
•Purge all of the air from the domestic water system. Allow water to run so
the tank is completely purged of any debris. Run the water long enough
so that it runs clear and to change at least one tank volume change past
IXOO&ORVHDOOIDXFHWV5HLQVWDOODOORIWKHVFUHHQVLQWKHIDXFHWV
•&KHFNWKHV\VWHPIRUOHDNV5HSDLUDVUHTXLUHG
3.2 Boiler Water Piping
See Figures in Section 8.0.
1.'HWHUPLQHZKHUHWKHERLOHUWKHVSDFHKHDWLQJDQGWKHZDWHUKHDWHU
connections should be made based on the type of piping system that is either
in place, or is to be installed for a new hydronic system installation. See
Schematic drawings in Section 8.0 for direction.
2.It is recommended that minimum size 1" pipe be used on the water heater
]RQHWRHQVXUHDGHTXDWHÀRZODUJHUVL]HVPLQ
3.3 Zone Circulator System
7KHZDWHUKHDWHUFRQQHFWLRQODEHOHG³%2,/(56833/<´VKRXOGEHSLSHGWRWKH
boiler supply piping after the air purger and before the space heating takeoffs -
NOTE
Installers should inquire of
local water purveyors as to
the suitability of their supply
for use in hydronic heating
systems.
If water quality is questionable,
a local water treatment expert
must be consulted for testing,
assessment and, if required,
treatment.
Alternatively, water or hydronic
ÀXLGRINQRZQTXDOLW\FDQEH
brought to the site.
WARNING
Do not use automotive-type
ethylene or other types of
automotive glycol antifreeze,
or undiluted antifreeze
of any kind on the boiler
water side of the system.
This may result in severe
boiler or tank damage. It
is the responsibility of the
Installer to ensure that glycol
solutions are formulated to
inhibit corrosion in hydronic
heating systems of mixed
materials. Improper mixtures
and chemical additives may
cause damage to ferrous and
non-ferrous components as
well as non-metallic, wetted
components, normally found
in hydronic systems.
Ethylene glycol is toxic, and
may be prohibited for use
by codes applicable to your
installation location. For
environmental and toxicity
reasons, IBC recommends
only using non-toxic
propylene glycol, and non-
toxic boiler water additives of
any kind.
PIPING3.0
11INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
for primary/secondary systems, see primary loop space heating piping on Figure
4: Piping Suggestion for IBC SL Series Small Boilers with Side Connections.
For parallel piping, see Figure 2: Generic Boiler Piping Schematic – Zoned by
Circulator.0RXQWWKHZDWHUKHDWHUFLUFXODWRUDVFORVHDVLVSUDFWLFDEOHWRWKH
ZDWHUKHDWHUDQGPDNHVXUHWKHÀRZDUURZSRLQWVWRZDUGWKHZDWHUKHDWHU7KH
use of shut-off valves is recommended for future service convenience.
7KHZDWHUKHDWHUFRQQHFWLRQODEHOHG³%2,/(55(7851´VKRXOGEHSLSHGWRWKH
ERLOHUUHWXUQSLSLQJDVFORVHWRWKHERLOHUDVSRVVLEOHDQGDIWHUDQ\ÀRZFRQWURORU
check valves in the space heating return piping. The use of a union and a shut-off
YDOYHLVUHFRPPHQGHG7KHXVHRIDFKHFNYDOYHLVUHTXLUHGWRSUHYHQWEDFNÀRZ
through the water heater during operation of the space heating system.
3.4 Zone Valve System
It is recommended that minimum size 1” pipe and 1” full-port zone valves with a
KLJK&9EHXVHGRQWKHZDWHUKHDWHU]RQHWRHQVXUHDGHTXDWHÀRZ
7KHZDWHUKHDWHUFRQQHFWLRQODEHOHG³%2,/(56833/<´VKRXOGEHSLSHGWRWKH
boiler supply piping after the air purger and grouped with the other zone supplies.
The use of a shut-off valve is recommended for future service convenience.
7KHZDWHUKHDWHUFRQQHFWLRQODEHOHG³%2,/(55(7851´VKRXOGEHSLSHGWRWKH
boiler return piping and grouped with the other zone returns. The use of a union
and a shut-off valve is recommended. The use of a check valve is required to
SUHYHQWEDFNÀRZWKURXJKWKHZDWHUKHDWHUGXULQJRSHUDWLRQRIWKHVSDFHKHDWLQJ
system.
NOTE
The piping drawings in
Section 8.0 of this manual
are simple schematic guides
to a successful installation.
There are many necessary
components not shown,
and details such as thermal
traps are left out so the
drawings have greater clarity.
We require that our boilers
and tanks be installed by
licensed and experienced
trades people who are familiar
with the applicable local
and national codes. System
design is to be completed
by an experienced hydronic
designer or Engineer.
The application drawing(s)
shown in this manual are only
SDUWRIWKH¿QLVKHGGHVLJQ
It is absolutely neccessary
to carefully read and follow
these installation instructions,
and just as importantly, the
installation instructions or the
boiler model you are using
with this water heater.
INSTALLATION AND OPERATION INSTRUCTIONS12
BT INDIRECT SERIES – WATER HEATERS
DANGER
DO NOT connect thermistor
sensors to “Therm” terminals
on the IBC control board.
An overheating hazard can
result, potentially causing
serious personal injury and/or
property damage.
WARNING
The Thermistor temperature
sensor supplied with the IBC
water heater is may not to be
compatible with other makes
of boiler or controls, and its
use may create a hazardous
condition. DO NOT USE THE
IBC SENSOR WITH OTHER
APPLIANCE MAKES.
1.Install electric wiring and grounding in accordance with the National Electrical
code and local regulations.
2.All water heaters are supplied with an aquastat for connection to most
boilers. Follow the wiring instructions supplied with the aquastat and the
installation instructions for the boiler the water heater is being connected to.
3.$OOZDWHUKHDWHUVDUHVXSSOLHGZLWKD.ȍWHPSHUDWXUHVHQVRUWKDWFRQQHFWVWR
WKH,%&FRQWUROERDUG³':+6HQVRU´WHUPLQDOVZLWKVWDQGDUGZLUHJDXJH
thermostat wire. For other boiler makes, an aquastat thermostat is required.
4.5HIHUHQFHVKRXOGEHPDGHWRWKH,QVWDOODWLRQ0DQXDOIRUWKHERLOHUDVZHOO
4.1 Temperature Sensor
7KH7HPSHUDWXUH6HQVRUVXSSOLHGZLWKWKH,%&:DWHU+HDWHULVDQ17&
7KHUPLVWRUW\SHZLWKDUHVLVWDQFHRIRKPVDW&DQGȕ ,%&
GRHVQRWUHFRPPHQGXVLQJUGSDUW\VXSSOLHGVHQVRUV&RPSDWLEOHZDWHU
WHPSHUDWXUHVHQVRUVDUHUHDGLO\DYDLODEOHIURP\RXU,%&GLVWULEXWRU
The resistance of the temperature sensor varies inversely with temperature. To
test, measure the temperature of the sensed environment and compare with the
value derived from the measurement of the resistance (obtained by connecting a
JRRGTXDOLW\WHVWPHWHUFDSDEOHRIPHDVXULQJXSWRNȍ ȍ DWWKH
FRQWUROOHUHQGRIWKHVHQVRUOHDG
To obtain a resistance reading, remove power to the boiler. The sensor leads
PXVWEHGLVFRQQHFWHGIURPWKHWHUPLQDOVWULSZKLOHWDNLQJWKHUHDGLQJ'RQRWJULS
the sensor leads in your hands or place them on or against a conductive surface
or the reading will be compromised. Place multi-meter probes onto the bare wire
HQGVRIWKHOHDGVDQGREWDLQWKHUHDGLQJ&RPSDUHWKHUHDGLQJWRWKHDFWXDO
sensor temperature and the resistance value listed for that temperature in Table 4
EHORZ 'RQRWDSSO\YROWDJHWRWKHVHQVRU GDPDJHPD\UHVXOW
TEMPERATURE RESISTANCE TEMPERATURE RESISTANCE
°F °C ƺ °F °C ƺ
30 -1 34,558 115 46 4,184
35 2 29,996 120 49 3,760
40 4 26,099 125 52 3,383
45 7 22,763 130 54 3,050
50 10 19,900 135 57 2,754
55 13 17,436 140 60 2,490
60 16 15,311 145 63 2,255
65 18 13,474 150 66 2,045
70 21 11,883 155 68 1,857
75 24 10,501 160 71 1,689
80 27 9,299 165 74 1,538
85 29 8,250 170 77 1,403
90 32 7,334 175 79 1,281
95 35 6,532 180 82 1,172
100 38 5,828 185 85 1,073
105 41 5,210 190 88 983
110 43 4,665 195 91 903
Table 4: Temperature Sensor resistance values
WARNING
IBC water heaters are
VXSSOLHGZLWKDNȍ
thermistor sensor to be
inserted into the temperature
well of the tank, and secured
with a retainer clip or cap.
The thermistor must be solidy
DI¿[HGVRDVWRSUHYHQWLW
from falling out or being
pulled out. If the sensor
is pulled out of the well, a
continuous call for hot water
will be generated, resulting in
elevated tank temperatures
and risk of scalding.
ELECTRICAL4.0
13INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
4.2 Aquastat
$Q$TXDVWDWLVDOVRVXSSOLHGZLWKWKH,%&:DWHU+HDWHU7KHLQVWDOOHUFDQFKRVH
to install either the temperature sensor as described in 4.1 or the Aquastat.
The aquastat mounts in the well provided on the water heater. Electrically the
aquastat will open on temperature rise (stops calling for heat when the water
UHDFKHVWKHGHVLUHGWHPSHUDWXUH DQGZLOOFORVHZKHQWKHZDWHUWHPSHUDWXUH
GURSVEHORZWKHGHVLUHGWHPSHUDWXUH7KHDTXDVWDWKDVDQ) & ¿[HG
differential.
To install the aquastat, carefully bend the capillary tube/sensing bulb so that
it is at a right angle to the back of the control. Loosen the mounting screw
and carefully insert the sensing bulb into the well until the control mounts to
WKHZHOOKHDG7LJKWHQWKHVFUHZWRORFNLQSODFH&RQQHFWZLUHV VL]HGIRUWKH
YROWDJHEHLQJXVHG WRWKHDTXDVWDWWHUPLQDOV6HWWKHDTXDVWDWWRWKHFRUUHFW
temperature by adjusting the dial so that the desired temperature is at the
SRLQWHU6HWWKHDTXDVWDWWRWKHORZHVWSUDFWLFDOVHWWLQJWRPHHWWKHFRQVXPHU¶V
needs. The aquastat has a maximum temperature setting of 150F. There is a hot
water scalding potential if the thermostat is set too high. The addition of a scald
protection devise may be required either at the outlet of the water heater or at the
SRLQWRIXVH&KHFNZLWK\RXUORFDOSOXPELQJDXWKRULW\IRUORFDOUHTXLUHPHQWV
INSTALLATION AND OPERATION INSTRUCTIONS14
BT INDIRECT SERIES – WATER HEATERS
5.1 Startup
After the water heater has been plumbed and wired, and the boiler water piping is
purged of air, the water heater is ready to be started. Follow the boiler installation
and operating instructions to place the boiler in operation.
5.2 Temperature Adjustment
The tank sensor controls the maximum water temperature in the water heater. If it is
set too high, the resulting hot water can cause painful scalding with possible serious
DQGSHUPDQHQWLQMXU\7KHWHPSHUDWXUHDWZKLFKWKLVRFFXUVYDULHVZLWKDSHUVRQ¶V
age, and the length of time in contact with the hot water. The slower response time
of infants, older, or handicapped people increases the hazard for them.
It is recommended that the thermostat be set for the lowest possible temperature
WKDWVDWLV¿HV\RXUQHHGV7KLVZLOODOVRSURYLGH\RXZLWKWKHORZHVWHQHUJ\
consumption and cost.
&KHFNWKHZDWHUWHPSHUDWXUHDWDKRWZDWHUIDXFHWVRRQDIWHUWKHWDQNWKHUPRVWDW
KDVVDWLV¿HGDQGWKHFLUFXODWRUDQGWKHERLOHUKDYHWXUQHGRII$GMXVWDVQHHGHG
Lowering the thermostat setting will not have an immediate effect on the water
temperature because the stored water will have to be used and the thermostat
must go through the cycle of heating cold water and satisfying at the new, lower
temperature. Additional temperature checks should follow the completion of a
heating cycle. Further adjustments may be required after you have used the
water heater.
CAUTION
AS A PRECAUTION:
After the water heater
has reached its setpoint
temperature, the installer
should locate a faucet that
is unprotected by an over-
temperature device.
Turn the faucet on full, and
allow it to run long enought to
ensure the water and piping
have been heated up to the
discharge temperature of the
tank.
Using an accurate
thermometer, test the water
temperature to ensure it is
within plus or minus 10°F of
the setpoint. If there is more
deviation, the cause should
be determined and corrective
measures taken.
OPERATION
NOTE
DHW TANK SET POINT
The temperature the end
user gets from the faucet.
Recommended to be no higher
than 120°F to prevent scalding.
MAXIMUM SUPPLY TEMP
The highest DHW Supply Set
Point temperature the boiler
will allow. Should be at least
20°F higher than the DHW
Supply Set Point temperature.
SUPPLY DIFF’L TEMP
The variance the control allows
in the DHW Supply Set Point.
Trial setting of 20°F. Set higher
to reduce short-cycling around
the DHW Supply Set Point.
TANK DIFF’L TEMP
The variance the control
allows in the DHW Tank Set
Point. A tank differential of
10°F is recommended.
5.0
15INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
The water heater is intended to provide many years of reliable service.
&RPSRQHQWVVXFKDVVHQVRUVDQGUHOLHIYDOYHVPD\EHVXEMHFWWRIDLOXUHVWKDW
UHTXLUHVHUYLFH'HSHQGLQJRQWKHTXDOLW\RIWKHZDWHUVXSSO\VHGLPHQWDQGRU
scale may coat the heating coil in the tank and reduce hot water recovery rate.
Failure to use the correct procedures or parts can result in unsafe operation. The
owner should arrange to have the following inspections and simple maintenance
procedures done at the suggested frequencies.
1. Boiler and Domestic Water Piping (Annual)&KHFNDOOSLSLQJIRUVLJQVRI
leakage at the joints, unions and shut-off valves. Repair as required.
2. Temperature and Pressure Relief Valve (Annual)
3. Sediment (Annual except where harsh water quality may require more
frequent service)'HSHQGLQJRQZDWHUFRQGLWLRQVDYDU\LQJDPRXQWRI
sediment may collect in the tank. Levels requiring service are indicated by a
small temperature difference between the boiler supply and return lines, and
DUHGXFHGUHFRYHU\UDWH5HSHDWHGÀXVKLQJXVXDOO\FOHDUVVXFKPDWHULDO$V
a preventive measure, water should be drawn from the drain valve until it
UXQVFOHDUDQGWKHLQVWDOODWLRQRIDZDWHU¿OWHUVKRXOGEHFRQVLGHUHG
4. Scale (Annual). Hard water may cause scale buildup on the outside of the
heating coil inside the tank. A water softener will help prevent this problem.
6\PSWRPVDUHLGHQWLFDOWRVHGLPHQWEXLOGXS,IUHSHDWHGÀXVKLQJGRHVQRW
UHVROYHWKHSUREOHPFKHPLFDOFOHDQLQJPD\EHUHTXLUHG3URFHHGDVIROORZV
6.1 Chemical Cleaning of the Heating Coil
1.To avoid water damage, shut off the cold water supply to the water heater.
2.0DNHDQRWHRIWKH'+:WHPSHUDWXUHFRQWUROVHWWLQJRQWKH,%&FRQWURODQG
turn off the power to the boiler and water heater.
3.Relieve the water pressure in the tank by opening a hot water faucet. This
will reduce the risk of scalding.
4.Remove the relief valve from the water heater.
5.'UDLQWKHZDWHUKHDWHUXQWLOWKHZDWHULVDWDOHYHOHTXDOWR´DERYHWKH
thermostat well. This level will cover the coil and the thermostat.
6.8VLQJDIXQQHOSRXURQHJDOORQRIFRPPHUFLDOLFHPDNHUFOHDQLQJVROXWLRQ
into the tank through the relief valve opening. Follow the instructions,
cautions, and warnings supplied with the cleaning solution.
7.7XUQRQWKHSRZHUWRWKHERLOHUDQGZDWHUKHDWHUSURJUDPWKH,%&FRQWURO
WRLWVKLJKHVW'+:WHPSVHWWLQJDQGDOORZWKHERLOHUWRKHDWWKHZDWHUXQWLO
WKHFRQWUROLVVDWLV¿HG,IWKHERLOHUFRQWUROLVQRWVDWLV¿HGDIWHUPLQXWHVRI
RSHUDWLRQSURJUDPWKH,%&'+:FRQWUROVHWWLQJWRLWVORZHVWWHPS
8.Allow the heated solution to set in the tank 30 minutes.
9.'UDLQWKHWDQNFRPSOHWHO\XVLQJ¿WWLQJVDQGKRVHVDVUHTXLUHGWRUHDFKDGUDLQ
10.Fill the water heater tank with fresh, cold, water and drain it completely.
5HSHDW¿OOLQJDQGGUDLQLQJDWOHDVWWKUHH WLPHVWRÀXVKDOORIWKHFOHDQLQJ
solution from the tank.
11.Reinstall the relief valve and the drain piping.
12.2SHQWKHFROGZDWHUVXSSO\DQG¿OOWKHWDQNZLWKZDWHU3XUJHWKHDLUIURPWKH
tank and the piping by opening the cold and hot water faucets in the house.
13.5HWXUQWKH,%&'+:FRQWUROVHWWLQJWRWKHWHPSHUDWXUHQRWHGLQ6WHS
MAINTENANCE6.0
INSTALLATION AND OPERATION INSTRUCTIONS16
BT INDIRECT SERIES – WATER HEATERS
TROUBLESHOOTING
SYMPTOM DIAGNOSIS REMEDY
WATER AT
FAUCETS TOO
HOT
DHW temperature
setting too high •5HGXFHWKH'+:7DQN6HW3RLQWWHPSHUDWXUH
DHW temperature
sensor giving false
reading
•Sensor is not fully inserted into the well
•Sensor giving incorrect resistance reading
•6HQVRUFRQQHFWHGWR,%&7KHUPWHUPLQDOVLQVWHDGRI'+:
Sensor terminals
•Improper 3rd party sensor installed in well
WATER AT
FAUCETS TOO
COOL
DHW temperature
setting too low
•,QFUHDVHWKH'+:7DQN6HW3RLQWWHPSHUDWXUH
Boiler Maximum
Supply Temp. setting
too low
•0DNHVXUHWKH0D[LPXP6XSSO\7HPSVHWWLQJLVDWOHDVW
)KLJKHUWKDQWKH'+:6XSSO\6HWSRLQW3/86RIWKH
6XSSO\'LII¶O7HPSVHWWLQJ
NO HOT WATER
AT FAUCETS Boiler does not
operate
•Ensure boiler power is on
•(QVXUHWKHERLOHULVSURJUDPHGIRU'+:DQGWKHZDWHU
temperatures are set properly
•&KHFNWKHWDQNWHPSHUDWXUHRQWKH,%&VFUHHQ2SHQRU
Short + sensor or wiring issue
Water Heater
Circulator does not
operate
•Follow steps for Boiler does not operate
•Ensure the pump relay is closed and suppling power to the
pump
•Ensure the zone valve is open and the end switch is closed
calling for heat
•&KHFNZLULQJFRQQHFWLRQVDWWKHFLUFXODWRU
•0HDVXUHYROWDJHDWWKHFLUFXODWRUGXULQJDFDOOIRUKHDW
VKRXOGVHH9$&9$&
•If power is at the circulator and connections are correct,
replace circulator
Water heater zone
valve does not open •Follow steps for Boiler does not operate
•&KHFNIRU9$&DWWKH]RQHYDOYHZKLOHWKHUHLVDFDOOIRU
heat, if correct voltage is available and connections are
good, replace the zone valve.
Tank sensor open,
short, or mis-wired •Ensure the tank sensor is connected to the correct terminals
and the wires are properly attached to the terminal strip and
the sensor is properly attached to the wiring at the tank
•'LVFRQQHFWWKHVHQVRUZLUHVIURPWKHWHUPLQDOVWULSDQG
measure the resistance in Ohms across the 2 sensor
ZLUHV&RPSDUHWKLVYDOXHWRWKHFKDUWDQGWKHDFWXDO
tank temperature. Repeat this test for the sensor only and
FRPSDUHWKHUHVXOWV&KHFNUHSODFHWKHZLUHIURPWKHERLOHU
to the sensor or replace the sensor
7.0
17INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
SCHEMATICS
NOTE
When using the sequential
load feature of the IBC boiler,
attention must be paid to
the operation of system
components in order to
ensure they are compatible.
Many air handlers (fan
coils) for instance have a
thermostat connection that
will energize an internal relay
to operate the air handler
circulator and its fan on
a call for heat. This may
result in operation of these
components when other
loads are running at a higher
priority, resulting in cold air
blowing, or robbing heat from
another load.
Some wiring alteration may
be required to divorce both
of these functions from
thermostat control in favour
of more effective control from
the IBC boiler.
NOTE
Full sized and more detailed
application drawings can be
downloaded from our web
site.
www.ibcboiler.com
8.0
Figure 2: Generic Boiler Piping Schematic – Zoned by Circulator
Figure 3: Generic Aquastat Wiring – Aquastat Opens on Temperature Rise
INSTALLATION AND OPERATION INSTRUCTIONS18
BT INDIRECT SERIES – WATER HEATERS
NOTE
When using zone valves in a
multi-zone heating system,
careful consideration must
EHWDNHQWRHQVXUHWKDWÀRZ
rates do not decrease below
the boiler’s rated minimum
ÀRZUHTXLUHPHQW%\SDVV
arrangements (pressure
activated bypass, three way
valves, etc.) may be required
WRHQVXUHDGHTXDWHÀRZ
under low load conditions.
BT Series Indirect
Hot Water Tank
120VAC
(HOT) (COM)
Heating circ.
AC in
Primary
Pump Boiler
Pump
۔ۀۇۇۊے
ڧ
ک
ڧ
ک ےۃۄۏۀ
ےۃۄۏۀ
ڽۇڼھۆ
DHW circ.
Factory-installed
Ganged endswitches from
Heating zone valves
Aquastat -dry contact
ڢ
Field-wiring BundleSelect one: ĞŝƚŚĞƌa dry-contact
Aquastat to a dŚĞƌŵ. connection
Žƌa 10K Ohm thermister to the
,t^ĞŶƐŽƌ connection.
Figure 4: Piping Suggestion for IBC SL Series Small Boilers with Side Connections
Figure 5: Wiring Suggestion for IBC Boilers
19INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
Figure 6: Suggested Domestic Water Piping
INSTALLATION AND OPERATION INSTRUCTIONS20
BT INDIRECT SERIES – WATER HEATERS
SERVICE RECORD
DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE
21INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
NOTES
INSTALLATION AND OPERATION INSTRUCTIONS22
BT INDIRECT SERIES – WATER HEATERS
NOTES
5(9,6,21+,6725<
R1 (JULY 2015) Initial release
R2 (SEPTEMBER 2015) &HUWL¿HGUHOHDVH
R3 (JUNE 2016) 8SGDWHVWRGLPHQVLRQVDQGFDSDFLWLHVWDEOH XSGDWHVWRUDWLQJVWDEOH
R (JUNE 201)8SGDWHVWRGUDZLQJVIRUVLGHFRQQHFWLRQVWRKHDWVRXUFH
IBC Technologies Inc.
8015 North Fraser Way
%XUQDE\%&
&DQDGD9-0
7HO
)D[
www.ibcboiler.com
120-221A1-R
June 201
,%&7HFKQRORJLHV,QF