32
The TRLAT is installed as detailed in the Capacity Controllers
Installation section, page 40. Wire as shown above.
WARNING
Jumper wire (factory installed) must be connected for GE
applications between W (Controller) and O/B (Controller). If not,
the TRLAT will not shut off the heater when the heat setpoint is
exceeded.
HVAC UNIT
System 1000 Switching Center (SYGE)
System 2000 Controller (101ASSB)
TRLAT
O/B R
G
C
W
Y
R
G
C
W Y
R G
W
Y
CONTROLLER
UNIT
1
O/B R
G
C
W
Y
TRLAT WIRING
CAPACITY CONTROLLERS – TRLAT
SETPOINT SETUP, TRLAT
A four pole dip switch is used to designate the desired heat and cool
cutoff setpoints. Using the table to right, set the switch positions to
correspond to the cutoff temperatures desired. For heat pumps, the
heat cutoff point is 118 degrees and unchangeable.
Cool
SW1
SW2
Cut-out
On
On
50 Deg F
On
Off
47 Deg F
Off
On
44 Deg F
Off
Off
41 Deg F
Heat
SW3
SW4
Cut-out
On
On
125 Deg F
On
Off
140 Deg F
Off
On
150 Deg F
Off
Off
160 Deg F
1
OVERVIEW
The TRFPC is an inexpensive no frills single stage air conditioning only
Capacity Controller. It will simply interrupt power to the air conditioning
compressor when the supply air temperature drops below 47 degrees
Fahrenheit and re-energize when the temperature rises above 47 degrees.
This setpoint is non-adjustable. It has no control for preventing compressor
short cycling. If your air conditioner does not have a non-recycle timer,
we highly recommend adding one when using this Capacity Controller to
prevent short cycling.
OPERATION
The TRFPC will interrupt power to the air conditioning compressor when
the supply air temperature drops below 47 degrees Fahrenheit and
re-energize when the temperature rises above 47 degrees. This setpoint
is non-adjustable. The TRFPC is powered by the “Y” terminal. Thus, the
TRFPC will operate only when there is a call for cooling (24V at “Y”). A
green status light is provided. When on, the compressor can run (relay
closed). When off, the “Y” circuit is broken, disengaging the compressor.
WIRING
The TRFPC is installed as
detailed in the Capacity
Controllers installation
section, page 40. The fol-
lowing wiring diagrams
show how to wire the
TRFPC to the System
Controller and the HVAC
unit. Terminal C of the
TRFPC must be wired to
the HVAC unit’s trans-
former common.
Note:
A non recycle timer on the air conditioner is strongly recommended
to prevent short cycling.
System Controller (101ASSB)
Switching Center (SYGE)
TRFPC
H
V
A
C
U
N
I
T
Y
W
C
G
R
R
G
W
Y
YOUT
YIN
C
CAPACITY CONTROLLERS – TRFPC
