- 25 -
2) If the condensing unit is located below the evaporator unit, use inverted U
trap to prevent liquid from flooding back to the compressor; if the elevation
difference is more than 10 ft or the line set exceeds 75 ft, use both inverted U
trap and suction accumulator.
3) If the condensing unit is located more than 10 ft above the evaporator unit,
use U trap to aid oil returning to the compressor.
4) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and test leak.
5) Hook up the drain line and check if water drains.
The line sizes and refrigerant charges are listed as follows.
Model No
Equivalent Line
Set
Liquid
Line
Suction Line
Drain Line
Recommended
Charge
CT14TSD
<= 75 FT
1/4” OD
3/8” OD
1/2” OD
R134a/19 OZ
CT13TSD
<= 75 FT
1/4” OD
1/2” OD
1/2” OD
R134a/26 OZ
CT12TSD
<= 75 FT
1/4” OD
1/2” OD
1/2” OD
R134a/32 OZ
CT34TSD
<= 75 FT
3/8” OD
5/8” OD
1/2” OD
R134a/40 OZ
7. Connecting Electrical Wires
Connect all 120VAC and 24VAC components using the wiring diagrams in
accordance with all state and local codes.
8. Evacuating, Charging and Starting the system
CAUTION:
•
Always use the superheat and subcooling, pressure readings to charge
refrigerant properly; the listed charge amounts are used for reference
only.
•
If the unit is equipped with a low ambient condition kit and installed in
the summer, charge 15% more refrigerant.
•
If the low ambient condition kit is used, turn off the compressor before
power the condensing unit. Only turn on the compressor after the
condensing unit has been powered for 12 hours.
1) Evacuate the system; both discharge and suction valves must be in the
middle positions during evacuating.
2) Charge the system through both suction and discharge valves with refrigerant
using the recommended initial amount; both discharge and suction valves
must be in the middle positions during charging.
3) Turn on the power to start the system and check the following temperatures
and pressures.
9.
Adjusting and Completing the Installation
1) The subcooling at the condensing unit shall be around 10°F. The charge may
be complete when there are no more bubbles forming in the liquid indicator.
Содержание CT12TSD
Страница 19: ... 18 Fig 6 WM 65 85SFCD Evaporator Unit ...
Страница 20: ... 19 Fig 7 WM 250 450SCU Condensing Unit Fig 8 WM 650 850SCU Condensing Unit ...
Страница 21: ... 20 Fig 9 Liquid Filter Fig 10 Liquid Indicator Fig 11 Touch Screen Thermostat ...
Страница 30: ... 29 Fig 19 CT12TSD Electrical Wiring Diagram Fig 20 CT34TSD Electrical Wiring Diagram ...
Страница 32: ... 31 Fig 23 Low Ambient Temperature CT34TSD LA Electrical Wiring Diagram ...