Heat Controls
24-VAC Fan/Staged
2nd
1st
C
Fan
Load: 10 VA (MAGN)
Load: 12 VA (MERC)
Load: 6.5 VA
FAN RELAY
2
1
3
5
4
2
1
HEATER CONTROL BOX
3rd
2
3
4
5.
Damper
Actuator
Line Voltage
CW
COM
CCW
24 VAC, 50 VA
Transformer
Load: 4 VA
24-VAC to
Customer
Controls
By Others
Damper Controls
24-VAC
M
Load: 4 VA
Actuator
Damper
24-VAC
Damper Controls
By Others
COM
CW
CCW
M
Y
BL
NOTES:
1.
Factory-installed
Field Wiring
Optional or installed by others
2.
Only available with fan-powered units.
3.
4.
Located in Heater Terminal box.
Only available with dual-duct units.
5.
DD00—Available for all VariTrane Units
(Trane actuator for field-installed DDC controls)
A unit controller is not provided. The air damper actuator is provided with an integral screw terminal block.
The fan contactor (fan-powered units), 24-VAC control power transformer (optional for single- and dual-duct
units), and factory-installed electric heater contactor wires are attached to the outside of the unit for field
connection of controls. A second actuator is provided with an integral screw terminal for dual-duct units.
Located in Heater Terminal Box for electric heat on single-duct units.
Located in Control Box for cooling only and hot water heat on single-duct units.
Located in Control Box on all fan-powered units.
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