9
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning overhead obstruc-
tion or for vertical clearances.
Fig. 5 — Service Clearance Dimensional Drawing (Size 12)
REFRIGERATION SYSTEM COMPONENTS
Each heat pump refrigeration system includes a compressor,
accumulator, reversing valve, dual-function outdoor coil with
vapor header check valve, cooling liquid line with a filter drier
and a check valve, dual-function indoor coil with a vapor head-
er check valve, and heating liquid line with a check valve and a
strainer. Size 08, 09, and 12 units have two compressor-cir-
cuits. See Fig. 6 for typical unit piping schematic (4-row in-
door coil with two compressor-circuits is shown).
Dual-function outdoor and indoor coils are designed to provide
parallel coil circuits during evaporator-function operation and
converging coil circuits during the condenser-function operation.
Reversing Valve and Check Valve Position
See Fig. 6 (on page 10) and Tables 2-4.
Troubleshooting Refrigerant Pressure Problems
and Check Valves
Refer to Fig. 6 and Tables 2 and 3.
Refrigerant System Pressure Access Ports
There are two access ports in each circuit - on the suction tube
and the discharge tube near the compressor. These are brass fit-
tings with black plastic caps. The hose connection fittings are
standard
1
/
4
-in. SAE male flare couplings.
The brass fittings are two-piece High Flow valves, with a re-
ceptacle base brazed to the tubing and an integral spring-closed
check valve core screwed into the base. See Fig. 7 on page 11.
This check valve is permanently assembled into this core body
and cannot be serviced separately. Replace the entire core body
if necessary. Service tools are available from RCD that allow
the replacement of the check valve core without having to re-
cover the entire system refrigerant charge. Apply compressor
refrigerant oil to the check valve core’s bottom O-ring. Install
the fitting body and torque to 96 ± 10 in. lbs (10.9 ± 1 Nm). Do
not exceed 106 in. lbs (11.9 Nm) when tightening.
C
B
A
D
LOCATION
DIMENSION
CONDITION
A
48-in. (1219 mm)
Unit disconnect is mounted on panel
18-in. (457 mm)
No disconnect, convenience outlet option
18-in. (457 mm)
Recommended service clearance
12-in. (305 mm)
Minimum clearance
B
42-in. (1067 mm)
Surface behind servicer is grounded (e.g., metal, masonry wall)
36-in. (914 mm)
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
Special
Check sources of flue products within 10 ft of unit fresh air intake hood
C
36-in. (914 mm)
Side condensate drain is used
18-in. (457 mm)
Minimum clearance
D
42-in. (1067 mm)
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36-in. (914 mm)
Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
Содержание WeatherMaker 50TCQ*08
Страница 4: ...4 Fig 2 Unit Dimensional Drawing 08 and 09 Size Units ...
Страница 5: ...5 Fig 2 Unit Dimensional Drawing 08 and 09 Size Units cont ...
Страница 6: ...6 Fig 3 Unit Dimensional Drawing 12 Size Unit ...
Страница 7: ...7 Fig 3 Unit Dimensional Drawing 12 Size Unit cont ...
Страница 19: ...19 Fig 25 Typical 50TCQ Control Wiring Diagram Sizes 08 09 ...
Страница 20: ...20 Fig 26 Typical 50TCQ Control Wiring Diagram Size 12 ...
Страница 21: ...21 Fig 27 50TCQ 08 09 Power Wiring Diagram ...
Страница 22: ...22 Fig 28 Typical 50TCQ 12 Power Wiring Diagram 208 230 v 3 Phase 60Hz Unit Shown ...
Страница 45: ......
