Gradient syncFURNACE mOD-200 - Page 39

syncFURNACE OD Instruction & Installation Manual – Rev 09 Pg. 39 of 81
Low Voltage Terminals:
Terminal Description
C
Neutral for Control 24Vac - Wire to thermostat for power
R
Control 24Vac Hot - Wire to thermostat, power supply for W,R,G,Y1,Y2
demands
W
Wire to thermostat - When energized provides signal to
syncFURANCE
for
Warm-air heating demand
G
Wire to thermostat - When energized provides signal to
syncFURANCE
for
Fan-circulation demand
Y1
Wire to thermostat - When energized provides signal to
syncFURANCE
for
Primary stage A/C demand
Y2
Wire to thermostat - When energized provides signal to
syncFURANCE
for
Secondary stage A/C demand
C
Wire to A/C Condenser - 24Vac Neutral
Y1
When home thermostat calls for primary A/C demand, sends signal to
outside A/C condenser to turn ON primary stage
Y2
When home thermostat calls for secondary A/C demand, sends signal to
outside A/C condenser to turn ON secondary stage
Zone 1 a
Wire to hydronic Zone 1 thermostat - DRY CONTACT - when energized,
provides heat demand signal to
syncFURANCE
Zone 1 b
Wire to hydronic Zone 1 thermostat - DRY CONTACT - when energized,
provides heat demand signal to
syncFURANCE
Zone 3 a
Wire to hydronic Zone 3 thermostat - DRY CONTACT - when energized,
provides heat demand signal to
syncFURANCE
Zone 3 b
Wire to hydronic Zone 3 thermostat - DRY CONTACT - when energized,
provides heat demand signal to
syncFURANCE
Zone 4 a
Wire to hydronic Zone 4 thermostat - DRY CONTACT - when energized,
provides heat demand signal to
syncFURANCE
Zone 4 b
Wire to hydronic Zone 4 thermostat - DRY CONTACT - when energized,
provides heat demand signal to
syncFURANCE
Outdoor a
Wire to outdoor sensor. Place sensor outside home on exterior north wall.
Provides outside temperature reading to controller to determine reset
supply temperature target
Outdoor b
Wire to outdoor sensor. Place sensor outside home on exterior north wall.
Provides outside temperature reading to controller to determine reset
supply temperature target
Indoor a
N/A
Indoor b
N/A
DHW Tank a
Wire to DHW Tank sensor to use for monitoring / controlling DHW tank water
temperature
DHW Tank b
Wire to DHW Tank sensor to use for monitoring / controlling DHW tank water
temperature
Extra a
N/A
Extra b
N/A
Sensors
Low Voltage Wire Terminals
Thermostat
A/C Unit
Hydronic Trig
Electric Shock Hazard. Can cause injury or death. Before attempting to perform any
service or maintenance, turn the electrical power to unit OFF at externally installed
service switch.
!
WARNING