System Operation - Lennox Elite XP14−018−230 Installation Instructions Manual

Table 5. Indoor Unit Matches, Targeted Subcooling, and Add Charge Values
Subcool
OD
Indoor Model #
Size
Heat
CBX27UH−018 13
CBX27UH−024 13
CBX32MV−018/024 12
CH33−25A 14
−018
CH33−25B 14
CR33−30/36 12
CX34−25 15
CX34−31 14
CBX26UH−024 17
CBX27UH−024 12
CBX32M−018, −024 14
CBX32M−030 12
CBX32MV−018/024 14
CBX32MV−024/030 12
CBX32MV−036 11
CBX40UHV−024 11
CBX40UHV−030 11
CH23−41 10
−024
CH33−25A 20
CH33−25B 19
CH33−31A 15
CH33−36C 10
CH33−36A 20
CR33−30, −036 17
CX34−25 15
CX34−31 15
CX34−36 26
CX34−38 13
CBX26UH−030 19
CBX27UH−030 10
CBX27UH−036 10
CBX32M−030 15
CBX32M−036 10
CBX32MV−024, −030 15
CBX32MV−036 10
CBX40UHV−030 10
−030 CBX40UHV−036 10
CH23−41 11
CH23−51 11
CH33−31A 16
CH33−31B 16
CH33−36A 10
CH33−36B 6
CH33−36C 10
CH33−42B 16
*Amount of charge required in additional to charge shown on unit nameplate.

System Operation

IMPORTANT
Some scroll compressor have internal vacuum protector
that will unload scrolls when suction pressure goes
below 20 psig. A hissing sound will be heard when the
compressor is running unloaded. Protector will reset
when low pressure in system is raised above 40 psig. DO
NOT REPLACE COMPRESSOR.
High Pressure Switch (S4)
This unit is equipped with a auto-reset high pressure
switch (single−pole, single−throw) which is located on the
liquid line. The switch shuts off the compressor when
discharge pressure rises above the factory setting. High
Pressure (auto reset) − trip at 590 psig, reset at 418 psig.
506728−01
Additional OD
Indoor Model #
Charge Size
Cool
14 1 9 CH33−43C
14 1 9 CR33−30, −36
14 0 0 CX34−31
14 0 7 CX34−36
−030
13 0 5 CX34−38
5 0 7 CX34−42
15 1 1 CX34−43
24 1 12 CX34−44, −48
3 0 15 CBX26UH−036
12 1 2 CBX27UH−036
11 0 4 CBX27UH−042
12 1 2 CBX27UH−048
11 0 4 CBX32M−036
12 1 2 CBX32M−042
11 2 1 CBX32MV−036
11 2 1 CBX32MV−048
11 2 1 CBX40UHV−042
3 0 0 CBX40UHV−048
10 1 1 CBX40UHV−036
8 1 2 CH33−43B
−036
11 1 15 CH33−43C
12 0 0 CH33−44/48B
10 1 1 CH33−48C
4 0 14 CH33−49C
9 0 15 CH33−50/60C
16 0 9 CR33−48
6 0 9 CR33−50, −60
11 1 7 CX34−38
11 1 5 CX34−43
2 2 15 CX34−44/48
2 2 15 CX34−49
4 2 7 CX34−50/60
2 2 15 CBX26UH−042
4 2 7 CBX27UH−042
2 2 15 CBX32M−048
2 2 15 CBX32MV−048
2 2 15 CBX40UHV−042
4 0 8 CBX40UHV−048
6 0 14 −042 CH23−68
18 2 8 CH33−43B
18 2 6 CH33−43C
6 0 6 CH33−44/48B
3 0 0 CH33−48C
11 1 5 CH33−49C
18 2 6 CH33−50, −60C
Subcool
Additional
Charge
Heat Cool
4 9 1 12
22 5 1 0
17 15 2 10
25 6 0 10
14 17 2 10
25 6 0 10
13 17 2 14
9 21 2 12
31 3 0 4
18 3 0 5
11 4 0 1
11 4 0 1
18 3 0 5
18 3 0 5
18 3 0 5
11 4 0 1
11 4 0 1
11 4 0 1
18 3 0 5
14 8 2 1
26 9 2 10
24 8 2 3
26 9 2 10
15 8 2 12
15 8 2 12
38 5 0 0
15 5 1 4
40 4 0 15
23 8 2 8
40 4 0 15
11 7 3 9
23 8 2 8
42 5 0 8
13 5 2 2
13 5 2 2
13 5 2 2
13 5 2 2
13 5 2 2
20 9 1 5
7 9 3 2
22 5 1 0
18 4 0 0
22 5 1 0
16 6 1 6
10 9 3 4
Low Pressure Switch (S87)
This unit is equipped an auto−reset low pressure switch
which is located on the vapor line. The switch shuts off the
compressor when the vapor pressure falls below the
factory setting. Low Pressure (auto reset) − trip at 25 psig,
reset at 40 psig.
Low Pressure Switch Bypass (S41) (Optional)
For use in applications where the heat pump is operated in
outdoor ambient temperatures below 15°F.
S
Prevents nuisance trips form the low pressure switch
S
Wired in parallel with the low pressure switch
Thermal Protection Switch (S173)
Some units are equipped with a compressor mounted
normally closed temperature switch that prevents
compressor damage due to overheating caused by
internal friction. The switch is located on top of the
compressor casing (see figure 1). This switch senses the
compressor casing temperature and opens at 239−257°F
(115°C−125°C) to shut off compressor operation. The
Page 28
Subcool
OD
Indoor Model #
Size
Heat
CH33−60D 12
CH33−62D 19
CR33−50, −60 29
CR33−60D 29
−042 CX34−49 11
CX34−50, −60 25
CX34−60 8
CX34−62C 8
CX34−62D 11
CBX26UH−048 20
CBX27UH−048 16
CBX27UH−060 12
CBX32M−048 16
CBX32M−060 20
CBX32MV−048 16
CBX32MV−060 20
CBX32MV−068 10
CBX40UHV−048 16
CBX40UHV−060 20
−048
CH23−68 24
CH33−50, −60C 17
CH33−60D 18
CH33−62D 13
CR33−50/60 19
CR33−60 19
CX34−49C 10
CX34−60 28
CX34−62C 10
CX34−62D 14
CBX26UH−060 31
CBX27UH−060 13
CBX32M−060 17
CBX32MV−048 20
CBX32MV−060 17
CBX32MV−068 11
CBX40UHV−048 20
−060 CBX40UHV−060 17
CH23−68 27
CH33−50, −60C 11
CH33−62D 19
CR33−50/60 19
CR33−60 23
CX34−62C 10
CX34−62D 19
Compressor
Mounted
Additional
Charge
Cool
8 0 9
7 1 7
5 0 4
5 0 4
6 1 4
8 1 15
8 1 4
11 3 10
7 1 15
10 3 11
6 0 0
6 1 4
6 0 0
8 1 0
6 0 0
8 1 0
8 4 5
6 0 0
8 1 0
6 2 8
6 1 5
6 0 13
7 3 6
6 1 1
6 1 1
6 1 9
7 3 14
6 3 12
7 3 12
6 3 0
7 0 8
5 1 4
6 0 0
5 1 4
8 2 12
6 0 0
5 1 4
7 0 13
4 0 0
6 2 4
6 2 4
6 1 3
7 2 14
7 3 2