Starting Out
17
QPAC User's Manual
How to Install and Wire the QPAC, Chapter 2
Wire QPAC-33
① NOTE
A contactor is
required if a high
limit control is used.
② NOTE:
A separate discon-
nect is required for
the fan(s) if used.
➂ NOTE:
Use 14 - 16 gauge
wire for control
power only.
Figure 22 -
QPAC-33 Wiring
All Units
Figure 21 -
QPAC-32 Wiring
for 150 - 1000A Units
ç
CAUTION:
Check terminals for tightness before applying power and then recheck terminals
after one day of operation. Loose connections can damage the SCR.
QPAC-33 Power and Load Wiring
QPAC-32 150 - 1000A
Circuit
Breakers
or
Disconnects
Contactors
If Required
Onboard
factory in-
stalled semi-
conductor
fuses
Heater
Load
Fan 120VAC/20W
L1
L2
L2
L1
L1
T1
L2
L3 T3
L3
1 amp
fuse
QPAC-33 All Models
Circuit
Breakers
or
Disconnects
Contactors
If Required
3 factory supplied
semiconductor fuses
30-100A customer installed
150-300A factory installed
Heater
Load
Fan 120VAC/20W
L1
L2
L1
L2
L3
L1
T1 L2 T2 L3 T3
Hybrid
①
➂
①
②
②
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