Instruction Manual
A
TMOSPHERIC
C
ONTROLLER
CT-HT-2
C
OOLING
T
HERMOSTAT
Green Air Products guarantees that this equipment
will perform as implied for the purpose it is intended. Green
Air Products warrants the original purchaser of this equip-
ment against defects in mechanical parts and workman-
ship for 5 years and electrical parts for 90 days. At our
option we will repair or replace defective equipment. War-
ranty service is only performed at the factory or authorized
service center. Any usage contrary to proper application
or alterations of original construction will void warranty
obligations. For further warranty information contact your
dealer or Green Air Products service department.
FIVE YEAR LIMITED WARRANTY
G
REEN
A
IR
P
RODUCTS
INC
.
P.O. BOX 1318 GRESHAM, OREGON 97030 U.S.A.
800-369-2113 • www.greenair.com
T
HERMOSTAT
C
ALIBRATION
The internal temperature sensors installed in this controller have
been calibrated and should not require further adjustment. If
necessary, the thermostats may be calibrated with the trim screw. A
thru-hole is provided on chassis under the setpoint knob. Avoid
undue pressure on the trim screw. Adjustments are very slight;
usually a 1/8 turn either way is adequate. Place a thermometer next
to the controller and let it stabilize to ambient temperature. Unplug
all fans or heaters from controller during this procedure. The
controller should remain plugged in with power switch 'ON'. Outlet
lights will indicate switch points. Turn cooling thermostat knob to
the left until outlet indicator light comes "on". Slowly turn knob back
to the right until light turns off. This point should match the
temperature reading on the thermometer. If not, turn knob back to
the left, adjust trim screw very slightly and turn knob right again to
re-check switchpoint temperature. When switchpoint temperature
matches that of thermometer calibration is complete. During
adjustment, pressure on trim screw will cause incidental switching.
This is normal and has no affect on adjustment procedure. Repeat
the proceedure for the heating thermostat, except start by slowly
turning the setpoint knob to the left until outlet indicator light turns
"on". Then, slowly turn to the right until light turn off again. This
"off" temperature should match the test termometer.
H
EATING
T
HERMOSTAT
