Specifications

GT-PCS Split Units - 60Hz Puron
®
Created: 29 Aug., 2013
50
Unit Start-Up Procedure
SERVICE MODE
MANUAL OPERATION
CONTROL DIAGNOSTICS
DIPSWITCH CONFIG
FAULT HISTORY
CLEAR FAULT HISTORY
SELECT OPTION
PREVIOUS SELECT
MANUAL OPERATING MODE
Y1 COMM OUTPUT OFF
Y2 COMM OUTPUT OFF
W COMM OUTPUT OFF
O COMM OUTPUT OFF
G COMM OUTPUT OFF
H COMM OUTPUT OFF
DH COMM OUTPUT OFF
ECM AIRFLOW 0
PUMP SPEED 0%
TEST MODE OFF
SELECT OPTION
PREVIOUS SELECT
 WARNING! 
WARNING! When the disconnect switch is closed, high
voltage is present in some areas of the electrical panel.
Exercise caution when working with energized equipment.
b. Check for cool air delivery at the unit grille within a
few minutes after the unit has begun to operate.
NOTE: Units have a five minute time delay in the control
circuit that can be bypassed on the DXM2 control board
by placing the unit in the “Test” mode as shown in the unit
IOM. Check for normal air temperature drop of 15°F to 25°F
(cooling mode).
c. Verify that the compressor is on and that the water
temperature rise (cooling mode) is within normal
range.
d. Check the elevation and cleanliness of the
condensate lines. Dripping may be a sign of a
blocked line. Check that the condensate trap is fi lled
to provide a water seal.
e. Turn thermostat to “OFF” position. A hissing noise
indicates proper functioning of the reversing valve.
7. Allow fi ve (5) minutes between tests for pressure to
equalize before beginning heating test.
a. Go into Manual Mode activate Y1, and Y2 for
Heating. Next adjust pump speed % until desired
loop temperature difference (entering water
temperature minus leaving water temperature) is
achieved. (For modulating valve adjust valve %).
b. Check for warm air delivery at the unit grille within a
few minutes after the unit has begun to operate.
NOTE: Units have a five minute time delay in the control
circuit that can be bypassed on the DXM2 control board
by placing the unit in the “Test” mode as shown in the unit
IOM. Check for normal air temperature rise of 20°F to 30°F
(heating mode).
c. Verify that the compressor is on and that the water
temperature drop (heating mode) is within normal
range.
e. Check for vibration, noise, and water leaks.
8. If unit fails to operate properly, perform troubleshooting
analysis (see troubleshooting section in the unit IOM).
If the check described fails to reveal the problem and
the unit still does not operate, contact a trained service
technician to insure proper diagnosis and repair of the
equipment.
9. When testing is complete, exit the Installer Menu and set
thermostat to maintain desired comfort level for normal
operation.
Unit performance may be verifi ed by calculating the unit
heat of rejection and heat of extraction. Heat of Rejection
(HR) can be calculated and compared to the performance
data pages in this IOM. The formula for HR is as follows:
HR = TD x GPM x 500 (or 485 for anti-freeze solutions),
where TD is the temperature difference between the entering
and leaving water, and GPM is the fl ow rate in U.S. GPM
determined by comparing the unit heat exchanger pressure
drop to Table 14.
Heat of Extraction (HE) can also be calculated and compared
to the performance data pages in this IOM. The formula for
HE is as follows: HE = TD x GPM x 500 (or 485 for anti-
freeze solutions), where TD is the temperature difference
between the entering and leaving water, and GPM is the fl ow
rate in U.S. GPM determined by comparing the unit heat
exchanger pressure drop to Table 14.
If performance during any mode appears abnormal, refer to
the DXM2 section or troubleshooting section of this manual.
NOTE: To obtain maximum performance, the air coil should
be cleaned before start-up. A 10% solution of dishwasher
detergent and water is recommended.
9 - 12
20 - 26
18 - 24
4 - 8
10 - 17
7 - 19