UNIT COMPONENT IDENTIFICATION / LOCATION
Figure 39.1 - Typical Power Cabinet - D-Cabinet Sized Units j
Left Panel
Ref: 3H039503
2
3
4
5
1
6
7a
7b
7c
7d
7e
7f
LEFT SIDE POWER PANEL
1.
(S) 24V Control Transformer
2.
(O) Gas Heat Control Transformer Secondary Circuit Breaker
3.
(O) Wiring Terminals for Item #5
4.
(O) Phase Failure Relay
5.
(O) Gas Heat Control Transformer
6.
(O) Energy Recovery Main Power and Electric Preheat Fuses
7.
(O) Powered GFCI Convenience Outlet Option Consisting of:
a.
Disconnect Switch
b.
Transformer Primary Fuses
c.
Secondary Circuit Breaker
d.
Terminal Strip
e.
Transformer
f.
Convenience Outlet Junction Box
(Outlet Accessible from Low Voltage Control Cabinet)
MAIN POWER PANEL
8.
(S) Main Power Distribution Block
9.
(O) Supply Fan VFD #2 Fuses (Dual Blower 15 or 20HP Only)
10. (S) Compressor Power Distribution Block
11. (S) Supply Fan VFD #1 Fuses
Location of components is typical, but may change depending on the configuration of the unit.
j
Main Panel
Ref: 3H039486
9
8
14
15
19
17
18
12. (S) Compressor Circuit Breakers
13. (S) Compressor Contactors
14. (O) Main Factory Mounted Disconnect Switch
15. (S) Supply Fan Power Distribution Block (Dual Blower 1-10HP)
16. (S) Supply Fan VFD #1
(Supply Fan VFD #2 for Dual Blower 15 or 20HP not shown)
17. (S) Supply Fan Overloads (Dual Blower 1-10HP)
18. (S) Ground Lug
19. (S) Cabinet Cooling Device (not shown)
RIGHT SIDE POWER PANEL
20. (S) Bus Bar Terminals
21. (S) Condenser Fan Fuses
22. (S) Auxiliary Fuses
23. (S) Bus Bar Terminals (52/60 Ton only)
24. (S) High Voltage Wiring Terminal Strip with Ground Terminals
25. (S) Compressor Crankcase Heater Fuses
26. (S) Control Transformer Primary Fuses
27. (O) Gas Heat Control Transformer Primary Fuses
28. (O) Phase Relay Fuses
(S) = standard (O) = optional
MCP15-500.9
10
11
12
25
13
16
Right Panel
Ref: 3H039485
20
21
22
23
21
24
26
28
27
39
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