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119
Be sure unit is in normal cooling mode by checking that the RH2
solenoid coil(s) and the CRC relay are deenergized (control
outputs off). Adjust charge per the charging charts as described in
the To Use The Cooling Charging Charts, Standard Unit section.
Switch system to run in the dehumidification mode for 5 minutes.
Dehumidification mode is when the RH2 solenoid coil(s) and the
CRC relay are energized. Switch back to cooling mode to recheck
pressures and temperatures on the charging chart and adjust
charge if necessary. If charge adjustment is necessary, then repeat
the steps in this paragraph until no charge adjustment is
necessary. When no more charge adjustment is necessary after
switching from Dehumidification mode back to Cooling mode,
then charge adjustment procedure is complete. Remove jumper
from the outdoor motor speed controller.
Puron
R
Refrigerant
Puron refrigerant operates at 50 to 70 percent higher pressures
than R-22. Be sure that servicing equipment and replacement
components are designed to operate with Puron refrigerant. Do
not mix with components that have been used with other
refrigerants. Puron refrigerant, as with other HFCs, is only
compatible with POE oils.
C07043
Fig. 56
---
Gas Valve (48PG08--14 Shown)
Recovery cylinder service pressure rating must be 400 psig.
Puron systems should be charged with liquid refrigerant. Use a
commercial-type metering device in the manifold hose. Manifold
sets should be 750 psig high-side and 200 psig low-side with 520
psig low-side retard. Use hoses with 750 psig service pressure
rating. Leak detectors should be designed to detect HFC
refrigerant.
Table 106—Altitude Compensation*
48PG03--07
ELEVATION
(ft)
NATURAL GAS
ORIFICE†
PROPANE
ORIFICE†
0-1,999
45
52
2,000
47
52
3,000
47
53
4,000
47
53
5,000
48
53
6,000
48
53
7,000
48
53
8,000
49
54
9,000
49
54
10,000
50
54
11,000
51
54
12,000
51
55
13,000
52
55
14,000
52
56
48PG08--14
ELEVATION
(ft)
NATURAL GAS
ORIFICE†
PROPANE
ORIFICE†
0-1,999
43
50
2,000
44
51
3,000
44
51
4,000
44
51
5,000
45
51
6,000
45
52
7,000
47
52
8,000
47
52
9,000
47
53
10,000
48
53
11,000
49
53
12,000
50
54
13,000
50
54
14,000
51
55
48PG08--16
ELEVATION
(ft)
NATURAL GAS
ORIFICE†
PROPANE
ORIFICE†
0-1,999
30
38
2,000
30
40
3,000
31
40
4,000
31
41
5,000
31
41
6,000
31
42
7,000
32
42
8,000
32
43
9,000
32
43
10,000
35
44
11,000
36
44
12,000
37
45
13,000
38
46
14,000
39
47
*
As the height above sea level increases, there is less oxygen per cubic foot of
air. Therefore, heat input rate should be reduced at higher altitudes. Includes
a 4% input reduction per each 1000 ft.
†Orifices available through your Carrier dealer.
48/
50P
G
C
03
--
16