HomeMy WebLinkAboutB16-0031_M4.1_1478903282.pdf1. Control System
a. Control system shall be Tekmar TN4 system with TekmarNet compatible components. Refer to Tekmar wiring diagrams for
more information.
b. Provide (1) Tekmar 482 Gateway with RS232 serial communication to the Home Automation System (HAS) (Savant
installed by others). Savant to provide remote access via the internet with occupied/unoccupied functions.
c. Provide (1) Tekmar 423 universal reset module, (X) Tekmar 335 zone managers and (X) Tekmar 325 zone modules.
d. Tekmar TN4 system shall control central boiler plant (including water heaters and recirc pump), snowmelt boiler plants,
kitchen make-up air, radiant floor, fan coils, outdoor pool heating, outdoor hot tub heating, indoor hot tub heating, indoor
cold tub cooling, and snowmelting.
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2. Thermostats
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communicating type, compatible with TN4, unless noted otherwise. Thermostats will control radiant floors and fan coils.
b. Tekmar TN4 thermostats shall be located discreetly within the zone (such as a closet) and shall each have (1) Tekmar 084
flush mounted indoor sensor located in the zone (unless noted otherwise). Savant shall display virtual thermostats on Savant
touch screens, including zone name, zone setpoint, and zone temperature.
c. Heat rejection supply/ exhaust fans shall have line voltage thermostats provided by mechanical contractor and wired by
electrical contractor.
3. B-1 & B-2 Boilers (Central)
a. Tekmar 423 universal reset module shall stage, modulate, and rotate B-1 & B-2 boilers to maintain heating water setpoint at
temperature sensor TS-1.
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by indoor feedback from the Tekmar TN4 system.
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e. P-1 or P-2 boiler pumps shall run whenever associated boiler is called to fire.
4. WH-1 & WH-2 Indirect Water Heaters
a. Provide (1) Tekmar 336 zone manager and (2) Tekmar 162 setpoint controls.
b. Upon a call for heating from temperature sensor TS-2 DW :+ VHW DW ) DGM 3 ZDWHU KHDWHU SXPS VKDOO VWDUW
c. Upon a call for heating from temperature sensor TS-3 DW :+ VHW DW ) DGM 3 ZDWHU KHDWHU SXPS VKDOO VWDUW
d. Water heaters shall be controlled by Tekmar TN4 system. Water heaters shall be disabled entirely during"Away" mode.
e. P-7 domestic hot water recirculation pump shall be controlled automatically.
5. Radiant Floor Heating
a. Tekmar 423 universal reset module shall control the Tekmar 741 actuating motor at MV-1 motorized mixing valve. Valve
position shall be modulated via floating action to maintain heating water supply setpoint at temperature sensor TS-5. Setpoint
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the Tekmar TN4 control system.
b. Upon a call for heating from thermostat, zone valve on heating water return pipe shall open. Heating water pump P-6a/b will
already be operating (see "Pumps" sequence for additional information on P-6a&b).
c. Radiant floor shall be the first stage of heating, fan coils shall be the second stage.
6. FC-1 Fan Coil (Direct Drive, Multi-Zone, Make-up Air) & CU-1 Condensing Unit (2-Stage)
a. Fan coil shall be equipped with EC motor and potentiometer for balancing.
b. COOLING: Upon a call for cooling, fan shall start and CU-1 condensing unit shall be enabled. Condensing unit shall be
staged as directed by integral controls to meet the cooling load.
c. HEATING: Radiant floor shall be the first stage of heating. Upon a call for second stage heating, fan shall start and P-5 pump
shall start and run full speed.
d. HUMIDIFICATION: Upon a call for humidification, fan shall start and both zone dampers shall fully open. See "Steam
Humidifiers" sequence for more information.
e. KITCHEN MAKE-UP AIR: FC-1 blower shall be electrically interlocked with Kitchen exhaust fan. Normally closed OSA
damper partially open (1000 CFM), normally open RA damper shall partially close, FC-1a zone damper shall fully open, and
FC-1b zone damper shall fully close. Exact position of RA damper shall be determined during TAB and shall be set to allow
sufficient OSA airflow. P-5 make-up air pump shall start to flow coil and B-1 & B-2 boilers shall be enabled. Pump speed
shall be varied by Tekmar 356 PL[LQJ FRQWURO WR PDLQWDLQ ) DGM GLVFKDUJH DLU WHPSHUDWXUH DW TS-4 temperature sensor
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speed upon a call for second stage heating.
f. FIREPLACE MAKE-UP AIR: FC-1 blower shall be electrically interlocked with Living Room fireplace gas valve.
Normally closed OSA damper partially open (600 CFM), normally open RA damper shall partially close, FC-1a zone damper
shall fully close, and FC-1b zone damper shall fully open. Exact position of RA damper shall be determined during TAB and
shall be set to allow sufficient OSA airflow. P-5 make-up air pump shall start to flow coil and B-1 & B-2 boilers shall be
enabled. Pump speed shall be varied by Tekmar 356 PL[LQJ FRQWURO WR PDLQWDLQ ) DGM GLVFKDUJH DLU WHPSHUDWXUH DW TS-4
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Pump shall run full speed upon a call for second stage heating.
g. KITCHEN & FIREPLACE MAKE-UP AIR: FC-1 blower shall be electrically interlocked with kitchen exhaust fan and
Living Room fireplace. Normally closed OSA damper shall mostly open (1600 CFM), normally open RA damper shall
partially close, and both zone dampers shall fully open. Exact position of RA damper shall be determined during TAB and
shall be set to allow sufficient OSA airflow. P-5 make-up air pump shall start to flow coil and B-1 & B-2 boilers shall be
enabled. Pump speed shall be varied by Tekmar 356 FRQWURO WR PDLQWDLQ ) DGM GLVFKDUJH DLU WHPSHUDWXUH DW TS-4
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Pump shall run full speed upon a call for second stage heating.
h. ZONING: Provide a zoning system. Zoning system shall include two zone dampers and one bypass damper. Zone dampers
shall open/ close based on cooling/ heating/ make-up air/ humidification demand. Bypass damper shall modulate to maintain
constant supply duct static pressure at pressure sensor mounted in supply air duct and shall not be tied into zoning system.
Exact static pressure setpoint shall be determined by contractor during TAB. Initial setpoint is estimated to be approximately
0.5" w.c. When all zone dampers are in the open position, bypass damper, when setup properly, shall be fully closed.
7. FC-2, FC-3, & FC-4 Fan Coils (Direct Drive, Single-Zone) & HP-2 Heat Pump
a. COOLING: Upon a call for cooling, associated fan coil shall start and HP-2 heat pump shall be enabled. Heat pump shall
modulate as directed by integral controls to meet the cooling load.
8. WCU-1 Wineroom Cooling Unit and RC-1 Remote Condensing Unit
a. COOLING: Upon a call for cooling from cellar mounted thermostat, fan shall start and RC-1 remote condensing unit shall be
enabled. Remote condensing unit shall cycle as directed by integral controls to meet the cooling load.
9. B-3 Boiler (Snowmelt)
a. Integral Lochinvar controls shall modulate B-3 boiler to maintain snowmelt water supply setpoint at temperature sensor TS-6.
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c. Provide (3) Tekmar 091/094 snow/ice sensors and sockets, one for each snowmelt zone. Refer to M0.1 for locations.
d. Provide (3) Tekmar 654 snowmelt controls, one for each snowmelt zone.
e. Upon a call for snowmelting from snow/ice sensor, B-3 boiler shall be enabled and associated snowmelt pump shall start.
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entirely. "Timed-On" means snowmelt shall turn on for a timed snowmelt operation period of 6 hours (adj). Upon completion
of "Timed-On" cycle, switch shall default back to previous position.
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outdoor temperature is above this setting.
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outdoor temperature is below this setting.
10. Fans
a. DBF-1 dryer booster fan shall be controlled by an integral pressure sensing switch which recognizes dryer operation and
activates booster fan from an independent electrical circuit. The integral delay-on-make timer in the switch will cycle the fan
on for intervals of 10 minutes. This will continue until the dryer has stopped and the timer delay period has lapsed.
b. EF-1 bath exhaust fans shall each be controlled by an on/off wall switch.
c. EF-2 garage exhaust fan shall be energized via an occupancy sensor in the garage ceiling. Once energized, fan shall run for 30
minutes (adj) as set by adjustable timer. Any trigger of the occupancy sensor during the timed run period shall reset the timer.
Also, provide a wall mounted 2 hour timer switch for manual operation.
d. EF-3 wet storage exhaust fan shall be controlled by a 12 hour timer switch and dehumidistat wired in parallel.
e. EF-4 AV room heat rejection exhaust fan shall be controlled by a line voltage cooling thermostat.
f. HF-1 humidification fan shall run whenever there is a call for humidity. Refer to "Steam Humidifiers" sequence.
g. HF-2 humidification fan shall run whenever there is a call for humidity. Refer to "Steam Humidifiers" sequence.
h. SF-1 mechanical room supply fan shall be controlled by a line voltage cooling thermostat.
11. Steam Humidifiers
a. Provide (1) Nortec outdoor temperature sensor and (1) Nortec digital humidistat controller with remote transducer for each
humidifier.
b. Upon a call for humidification from room mounted humidity transducer, associated fan shall start and once airflow is proven
by air proving switch, humidifier shall start. Humidifier shall modulate to maintain humidity setpoint.
c. Include a high limit duct humidistat located in the supply air duct, downstream of the steam absorption zone to disable
humidifier if levels are too high.
d. Digital humidistat controller shall automatically reset the humidity setpoint based on outdoor temperature. Outdoor reset
curve shall be adjustable.
e. Humidification shall be disabled during calls for cooling and make-up air.
f. Integral controls shall automatically temper hot drain water by mixing cold domestic water to comply with code.
12. Steam Generators
a. Steam generators shall be controlled by Mr. Steam controls.
13. Pumps
a. P-1 B-1 boiler pump: on whenever boiler is called to fire.
b. P-2 B-2 boiler pump: on whenever boiler is called to fire.
c. P-3 WH-1 water heater pump: on upon a call for DHW heating from TS-2 temperature sensor.
d. P-4 WH-2 water heater pump: on upon a call for DHW heating from TS-3 temperature sensor.
e. P-5 FC-1 fan coil pump: on during a call for make-up air and when not shutdown by WWSD (warm weather shut down).
Pump is to be controlled for variable speed pumping via Tekmar 356 mixing control. Pump shall run full speed (bypass
Tekmar 356 control) upon a call for second stage heating.
f. P-6a&b radiant floor heating pumps: pumps shall be staged by the Grundfos Genie Bus controls. Only one pump is required
to run at a time. The second pump is for standby operation for the case that the other pump fails. Pumps shall be rotated for
equal run times. Pumps shall run constantly when Tekmar Control system is NOT in WWSD (warm weather shut-down).
Grundfos Magna pump is equipped with an integrated variable frequency converter to automatically vary pump speed based
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is OK because the pump will slow down to a very slow speed and very little electrical energy will be used.
g. P-7 domestic hot water recirculation pump: controlled automatically by integral controls.
h. P-8 B-3 boiler pump: on whenever boiler is called to fire.
i. P-9 snowmelt pump: on whenever there is a call for snowmelting from SZ-1.
j. P-10 snowmelt pump: on whenever there is a call for snowmelting from SZ-2.
k. P-11 snowmelt pump: on whenever there is a call for snowmelting from SZ-3.
Sequence of Operation
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