13
920-164-02 (10-04)
Table 5
Heat Pumps
Multiple Circuits
Single Circuit
Factory
Circuit
Breakers Voltage / Hz / Ph
Voltage
Range
MCA
HACR /
Max Breaker Size
Wire Size (fi eld)*
Groung Wire Size*
(fi eld)
MCA
HACR /
Max
Breaker
Size
Wire Size*
(fi eld)
Groung
Wire Size*
(fi eld)
Ckt 1
Ckt 2
Ckt 1
Ckt 2
Ckt 1
Ckt 2
Ckt 1
Ckt 2
Ckt 1
Ckt 1
Ckt 1
Ckt 1
VHB18K
05
2
230/208-60-1
198-253
14
26
20
30
12
10
12
10
39
40
8
10
75
2
230/208-60-1
198-253
14
39
20
40
12
8
12
10
52
60
6
10
10
2
230/208-60-1
198-253
14
52
20
60
12
6
12
10
65
70
4
8
VHB24K
05
2
230/208-60-1
198-253
20
26
30
30
10
10
10
10
41
40
8
10
75
2
230/208-60-1
198-253
20
39
30
40
10
8
10
10
54
60
6
10
10
2
230/208-60-1
198-253
20
52
30
60
10
6
10
10
67
70
4
8
VHB30K
05
2
230/208-60-1
198-253
23
26
40
30
8
10
10
10
51
60
6
10
75
2
230/208-60-1
198-253
23
39
40
40
8
8
10
10
64
70
4
8
10
2
230/208-60-1
198-253
23
52
40
60
8
6
10
10
77
80
4
8
15**
2
230/208-60-1
198-253
23
52
40
60
8
8
10
10
81
90
4
8
VHB36K
05
2
230/208-60-1
198-253
28
26
40
30
8
10
10
10
54
60
6
10
75
2
230/208-60-1
198-253
28
39
40
40
8
8
10
10
67
70
4
8
10
2
230/208-60-1
198-253
28
52
40
60
8
6
10
10
80
80
4
8
15*
2
230/208-60-1
198-253
28
52
40
60
8
8
10
10
81
90
4
8
VHB42K
10
2
230/208-60-1
198-253
34
53
50
60
6
6
10
10
86
90
4
8
15
3
230/208-60-1
198-253
34
53/27
50
60/30
6
6/8
10
10/10
112
120
2
4
VHB49K
15
3
230/208-60-1
198-253
36
53/27
50
60/30
6
6/6
10
10/10
114
120
2
4
20
3
230/208-60-1
198-253
36
53/53
50
60/60
6
6/6
10
10/10
N/A
N/A
N/A
N/A
VHB60K
20
3
230/208-60-1
198-253
48
53/53
70
60/60
4
6/6
8
10/10
N/A
N/A
N/A
N/A
25
4
230/208-60-1
198-253
48
53/53/27
70
60/60/30
4
6/6/8
8
10/10/10
N/A
N/A
N/A
N/A
Unit Wiring with VPDB1 Distribution Block
Heat Pump
(Field Wiring)
Auxiliary
Heater #1
(Field Wiring)
Ground
(Field Wiring)
Ground Lug
Auxiliary Heater #2
(Field Wiring)
Auxiliary
Heater #2
Auxiliary
Heater #1
Heat Pump
Line Voltage And Ground Connections
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.
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
* 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.
Summary of Contents for VERT-I-PAK B-SERIES
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