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Table 5
Heat Pumps
Factory
Circuit
Breakers Voltage / Hz / Ph
05
2
230/208-60-1
VHB18K
75
2
230/208-60-1
10
2
230/208-60-1
05
2
230/208-60-1
VHB24K
75
2
230/208-60-1
10
2
230/208-60-1
05
2
230/208-60-1
75
2
230/208-60-1
VHB30K
10
2
230/208-60-1
15**
2
230/208-60-1
05
2
230/208-60-1
75
2
230/208-60-1
VHB36K
10
2
230/208-60-1
15*
2
230/208-60-1
10
2
230/208-60-1
VHB42K
15
3
230/208-60-1
15
3
230/208-60-1
VHB49K
20
3
230/208-60-1
20
3
230/208-60-1
VHB60K
25
4
230/208-60-1
* If wire is applied at ambient greater than 30°C (86°F), consult Table 310-16 of the NEC (ANSI/NFPA 70). The ampacity of nonmetalic-sheathed cable (NM), trade name ROMEX, shall be that of 60°C
(140°F) conductors, per the NEC (ANSI/NFPA 70) Article 336-30. If other than uncoated (non-plated), 60°C or 75°C (140°F or 167°F) insulation, copper wire (solid wire for 10 AWG and smaller,
stranded wire for larger than 10 AWG) is used, consult applicable tables of the NEC (ANSI/NFPA 70).
** VHB30K15 and VHB36K15 models were confi gured to stage electric heat with the "D" suffi x revision. Refer to unit nameplate for actual requirements.
Line Voltage And Ground Connections
Auxiliary
Heater #1
(Field Wiring)
Ground
(Field Wiring)
Ground Lug
3) Thermostat Mounting And Wiring
A. Thermostat Location
Locate the thermostat about 5 ft. above the fl oor
in an area with good circulation at average indoor
temperature.
Do not mount thermostat where it may be affected by:
• Drafts or dead-air spots behind doors and in
corners.
• Hot or cold air fl ow from ducts.
• Radiant heat from sun or appliances.
• Concealed pipes or chimneys.
• Unheated (uncooled) areas behind thermostat,
such as an outside wall.
MCA
Voltage
Range
Ckt 1
Ckt 2
198-253
14
26
198-253
14
39
198-253
14
52
198-253
20
26
198-253
20
39
198-253
20
52
198-253
23
26
198-253
23
39
198-253
23
52
198-253
23
52
198-253
28
26
198-253
28
39
198-253
28
52
198-253
28
52
198-253
34
53
198-253
34
53/27
198-253
36
53/27
198-253
36
53/53
198-253
48
53/53
198-253
48
53/53/27
Heat Pump
Heat Pump
(Field Wiring)
Auxiliary
Heater #1
Auxiliary
Auxiliary Heater #2
Heater #2
(Field Wiring)
920-164-02 (10-04)
Multiple Circuits
HACR /
Max Breaker Size
Wire Size (fi eld)*
Ckt 1
Ckt 2
Ckt 1
Ckt 2
20
30
12
10
20
40
12
8
20
60
12
6
30
30
10
10
30
40
10
8
30
60
10
6
40
30
8
10
40
40
8
8
40
60
8
6
40
60
8
8
40
30
8
10
40
40
8
8
40
60
8
6
40
60
8
8
50
60
6
6
50
60/30
6
6/8
50
60/30
6
6/6
50
60/60
6
6/6
70
60/60
4
6/6
70
60/60/30
4
6/6/8
Unit Wiring with VPDB1 Distribution Block
B. Thermostat Mounting and Wiring
The thermostat is a precision instrument and was carefully
adjusted at the factory. Handle it carefully.
CAUTION: Disconnect the power supply before begin-
ning installation of the thermostat to prevent electrical shock
or equipment damage. Do not short across the thermostat
terminals. This can burn out the thermostat anticipator.
All wiring for the thermostat circuit must comply with NEC,
state and local codes. Use No. 20 AWG color-coded, insulated
(35°C minimum) wire. If the thermostat is located more than
Single Circuit
HACR /
Max
Groung Wire Size*
Breaker
(fi eld)
MCA
Size
Ckt 1
Ckt 2
Ckt 1
Ckt 1
12
10
39
40
12
10
52
60
12
10
65
70
10
10
41
40
10
10
54
60
10
10
67
70
10
10
51
60
10
10
64
70
10
10
77
80
10
10
81
90
10
10
54
60
10
10
67
70
10
10
80
80
10
10
81
90
10
10
86
90
10
10/10
112
120
10
10/10
114
120
10
10/10
N/A
N/A
8
10/10
N/A
N/A
8
10/10/10
N/A
N/A
Groung
Wire Size*
Wire Size*
(fi eld)
(fi eld)
Ckt 1
Ckt 1
8
10
6
10
4
8
8
10
6
10
4
8
6
10
4
8
4
8
4
8
6
10
4
8
4
8
4
8
4
8
2
4
2
4
N/A
N/A
N/A
N/A
N/A
N/A
13
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