Page 25
Table 10. HFC−410A Normal Operating Pressures −
Heating
1
SSB*H4S44Y
XP16
−024
−036
−048
−060
°F (°C)
2
Liq
Vap
Liq
Vap
Liq
Vap
Liq
Vap
First Stage (Low Capacity) Pressure
3
40 (4.4)
314
88
304
89
324
92
341
89
50 (10)
333
116
318
116
354
115
365
113
Second Stage (High Capacity) Pressure
3
20 (−7.0)
286
59
289
63
306
61
318
59
30 (−1.0)
303
74
303
77
322
70
335
73
40 (4.4)
321
89
314
88
345
92
348
86
50 (10)
346
109
333
110
370
110
369
107
1
Most−popular−match−up pressures. Indoor match up, indoor air quality, and indoor load
cause pressures to vary.
2
Temperature of the air entering the outdoor coil.
3
Liquid ±10 and Vapor ±5 psig.
1
Use tables 9 and 10 to perform maintenance checks; it is not a procedure
for charging the system. Minor variations in these pressures may be due to
differences in installations. Significant deviations could mean that the sys-
tem is not properly charged or that a problem exists with some component in
the system.
Indoor Unit Matchups SSB*H4S45Y
Table 11. SPB036H4S45Y
Indoor Unit Match−
up
Heating
+5ºF
Cooling
+1ºF
*Add
Charge
Subcooling
lbs.
oz.
CBX26UH−036
50
5
0
0
CBX27UH−036−230
22
7
0
9
CBX27UH−042−230
24
11
3
0
CBX32M−036
22
7
0
9
CBX32MV−036
22
7
0
9
CBX32MV−048
24
11
3
0
CBX40UHV−030
22
7
0
9
CBX40UHV−036
22
7
0
9
CBX40UHV−042
24
11
3
0
CBX40UHV−048
24
11
3
0
CH33−43B
13
10
2
7
CH33−48C
37
11
2
11
CH33−43C
37
11
2
11
CR33−48B/C
49
7
0
9
CX34−43B/C
29
9
2
11
CX34−50/60C
29
9
2
11
Table 12. SPB048H4S45Y
Indoor Unit Match−
up
Heating
+5ºF
Cooling
+1ºF
*Add Charge
Subcooling
lbs.
oz.
CBX26UH−048−230
10
8
1
4
CBX27UH−048−230
19
9
1
4
CBX27UH−060−230
13
14
3
3
CBX32M−048
19
9
1
4
CBX32M−060
14
9
1
11
CBX32MV−048
19
9
1
4
CBX32MV−060
14
9
1
11
CBX32MV−068
9
8
1
11
CBX40UHV−048
19
9
1
4
CBX40UHV−060
14
9
1
11
CH23−68
24
10
1
12
CH33−49C
19
9
2
5
CH33−50/60C
19
9
2
5
CH33−60D
13
8
0
0
CH33−62D
11
9
1
4
CR33−50/60C
15
7
0
10
CR33−60D
15
7
0
10
CX34−60D
14
8
1
0
CX34−62D
9
9
1
6
CX34−62C
8
9
1
9
Table 13. SPB060H4S45Y
Indoor Unit Match−
up
Subcooling
lbs.
oz.
CBX26UH−060
20
9
4
13
CBX27UH−060−230
10
6
2
3
CBX32M−060
17
6
1
12
CBX32MV−060
17
6
1
12
CBX32MV−068
15
7
2
1
CBX40UHV−060
17
6
1
12
CH33−50/60C
33
8
1
0
CH33−62D
15
7
1
4
CH23−68
37
9
2
10
CR33−50/60C
24
7
0
0
CR33−60D
24
7
0
0
CX34−62C
21
9
2
16
CX34−62D
13
7
1
4
*Amount of charge required in additional to charge shown on unit
nameplate. (Remember to consider line set length difference.)
