©
2008 W
544
-
12/08
8
of
12
Wire the tN4 communication to terminals tN4 and C.
If a Zone Manager is used:
•
Connect the tN4 on the thermostat to the tN4 on the
proper zone of the Zone Manager used for the first stage
of heat. The C terminal is already connected.
If a Zone Manager is not used:
•
Connect the tN4 on the thermostat to the tN4 on another
tN4 device on the same tN4 bus.
•
Connect the C on the thermostat to the C terminal on
another tN4 device on the same tN4 bus.
tN4 Communication
Terminals 8, 9
Wire the first stage of heating to the Heat 1 Relay.
(Rh1 - W1)
•
Use these terminals as a switch to operate the first stage
of heating.
If a Zone Manager is used:
•
Connect W1 on the thermostat to W on the proper
zone of the Zone Manager.
If a Zone Manger is not used:
•
Determine if the factory jumper must be cut.
•
When the factory jumper is not cut, W1 is a powered
output that is internally connected to R.
•
When the factory jumper is cut, Rh1- W1 is an isolated
switch. No power is available from these terminals.
Heat 1 Relay
Terminals 11, 12
Wire 24 V (ac) to terminals C and R.
If a Zone Manager is used:
•
Connect C on the thermostat to C on the proper zone
of the Zone Manager.
•
Connect R on the thermostat to R on the proper zone
of the Zone Manager.
If a 24 V (ac) transformer is used:
•
Connect C on the thermostat to C on the transformer.
•
Connect R on the thermostat to R on the transformer.
Power (24 V (ac))
Terminals 9, 10
Zone Manager
Thermostat
Zone Manager
or Thermostat
Thermostat
Zone Manager
Thermostat
*
Factory installed jumper connects terminals R to Rh1
(To isolate Rh1-W1 relay, cut jumper)
Note:
This connection is polarity sensitive.
Wiring the Thermostat:
9
C
10
R
tN4
C
R
W
8
tN4
9
C
10
R
tN4
C
R
W
9
C
10
R
Rh1 W1
11
12
tN4
C
R
W
Wire the first stage of cooling to the Cool 1 Relay.
(Rc - Y1)
•
Rc - Y1 is an isolated switch. No power is available from
these terminals
•
Use these terminals as a switch to operate the first stage
of cooling.
Cool 1 Relay
Terminals 3, 4
Thermostat
4
3
Y1 Rc
1st Stage
Cooling
