Brochure

36 63-8702
C
W
R
U1
RC
Y
G
C
W
R
Y
G
THERMOSTAT OR EIM
FURNACE
U1
R
C
W
R
C
W
R
C
W
Zone 1
Priority
Zone 2
Zone 3
24 VAC THERMOSTATS
1
2
3
5
4
6
COMMON WIRE IS OPTIONAL ON MOST NON-WI-FI MODELS. IF COOLING IS NOT USED, DISREGARD THE Y AND G WIRES.
THIS DIAGRAM SHOWS HOW THE THERMOSTAT OPTIONS LISTED BELOW CAN BE INTEGRATED TO A HYDRONIC PANEL FOR STAGE 1 HEAT AND A DIFFERENT HEAT
SOURCE FOR BACKUP HEAT. THE DIAGRAM DOES NOT SHOW WIRING FOR THE BOILER, PUMP(S), VALVES, DHW CIRCUIT, ETC. SEE OTHER DIAGRAMS IN THIS FILE
OR THE LITERATURE THAT CAME WITH THE HOT WATER PANEL FOR THE REST OF THE HOT WATER PANEL WIRING.
IF THE BACKUP HEAT SOURCE IS ZONED FORCED AIR, THEN THE THERMOSTAT WOULD WIRE TO ONE OF THE ZONES ON THE ZONE PANEL RATHER THAN TO THE
FURNACE DIRECTLY.
PERTINENT THERMOSTAT CON FIGURATION SETTINGS:
HEATING SYSTEM = HEAT PUMP (EVEN THOUGH THIS IS NOT CONTROLLING A HEAT PUMP APPLICATION)
HEATING EQUIPMENT = GEOTHERMAL RADIANT
RADIANT STAGES = 1
GEO FORCED AIR = NONE IF COOLING IS NOT USED, COOL ONLY IF THE BACKUP COOLING IS USED.
BACKUP HEAT STAGES = 1
BACKUP HEAT TYPE = ELECTRIC OR GAS/OIL
BACKUP HEAT DROOP = (INSTALLER PREFERENCE, COMFORT OR DROOP) COMFORT WILL RUN THE BACKUP HEAT WITH THE HOT WATER HEAT MORE FREQUENTLY
.
DROOP WILL HOLD OFF THE BACKUP HEAT UNLESS THE INDOOR TEMPERATURE DROPS TO THE DROOP SETTING WHILE THE THERMOSTAT IS RUNNING THE
RADIANT HEAT DURING STEADY STATE.
IF THERE IS A HEAT PUMP USED, THE WIRING AND CONFIG SETTINGS WOULD BE DIFFERENT THAN SHOWN IN THIS DIAGRAM.
COMPATIBLE THERMOSTATS:
TH8321WF1001
TH8321R1001 (WIRED AT WALL PLATE OR USED WITH THM5421R1021 EIM)
YTHX9421R5085 PRESTIGE THERMOSTAT KIT (EIM INCLUDED)
1
2
3
4
MCR37976
5
6
Staging a boiler + secondary heat using a 2 stage thermostat without isolation relay
(thermostat with special Geothermal radiant settings required. See models listed in Note 6 above).
W
1
3
W CRW2 Rc
C
W2 RWRc Y G
C
W
R
Y
G
FURNACE
1
3
2
1
3
2
R
C
W
R
C
W
R
C
W
Zone 1
Priority
Zone 2
Zone 3
2
THE WIRING EXAMPLE SHOWN ON ZONE 2 OF THE HYDRONIC PANEL WOULD BE USED IF THE SECOND STAGE HEAT SOURCE DOESN’T HAVE COMMON TERMINA
L
AND COOLING IS NOT USED. THE WIRING CIRCUIT ALSO ASSUMES THE STAGE 2 HEAT SOURCE HAS A BUILT-IN POWER SUPPLY. IF IT DOES NOT, THE POWER
SUPPLY SHOULD BE WIRED IN SERIES WITH THE STAGE 2 HEAT CIRCUIT.
THE WIRING EXAMPLE SHOWN ON ZONE 3 OF THE HYDRONIC PANEL WOULD BE USED IF COOLING IS BEING CONTROLLED BY THE THERMOSTAT OR IF THE
SECOND STAGE HEAT SOURCE HAS A COMMON TERMINAL AVAILABLE.
COMMON WIRE IS OPTIONAL ON MOST NON-WI-FI MODELS. IF COOLING IS NOT USED, DISREGARD THE Y AND G WIRES.
THIS DIAGRAM SHOWS HOW A 2 STAGE THERMOSTAT CAN BE INTEGRATED TO A HYDRONIC PANEL FOR STAGE 1 HEAT AND A DIFFERENT HEAT SOURCE FOR
BACKUP HEAT. THE DIAGRAM DOES NOT SHOW WIRING FOR THE BOILER, PUMP(S), VALVES, DHW CIRCUIT, ETC. SEE OTHER DIAGRAMS IN THIS FILE OR THE
LITERATURE THAT CAME WITH THE HOT WATER PANEL FOR THE REST OF THE HOT WATER PANEL WIRING.
IF THE BACKUP HEAT SOURCE IS ZONED FORCED AIR, THEN THE THERMOSTAT WOULD WIRE TO ONE OF THE ZONES ON THE ZONE PANEL RATHER THAN TO THE
FURNACE DIRECTLY.
1
2
3
4
MCR37977
R8222B
OR EQUIVALENT RELAY
R8222B
OR EQUIVALENT RELAY
1
R
3
6
6
2
5
3
5
COIL
COIL
THERMOSTAT
THERMOSTAT
STATE 2 HEAT
24 VAC THERMOSTAT
Staging a boiler + secondary heat using a 2 stage thermostat & an isolation relay.
(Relay not required with select thermostat models. See previous diagram.)
Hydronic Zoning System