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electrical
capacity to handle the air required for the unit
application. If the duct system is too small, larger
ductwork should be installed. Check for existing
leaks and repair as necessary to ensure a tight air
seal within duct. The duct system and all diffusers
should be sized to handle the designed air flow
quietly. To maximize sound attenuation of the unit
blower, the supply and return air plenums should
be insulated. There should be no direct straight air
path thru the return air grille into the heat pump.
The return air inlet to the heat pump must have at
least one 90 degree turn away from the space
return air grille. If air noise or excessive air flow are
a problem, the blower speed can be changed to a
lower speed to reduce air flow. (Refer to ECM
motor speeds and settings in Table #1)
Always disconnect power to the unit before
changing motor speed to prevent damage to
the motor, injury or death due to electrical
shock.
Table 1: CP/BP Motor CFM Selection (ECM
Motor Part
Units
Number
CP/BP015
450-153
CP/BP018
450-153
CP/BP024
450-157
CP/BP030
450-154
CP/BP036
450-158
CP/BP042
450-155
CP/BP048
450-155
CP/BP060
450-156
CP/BP070
450-156
Revised 05-12
Caution
Caution
Motor)otor Only)
Motor HP
Tap1
1/3
LOW
1/3
-
1/3
LOW
1/3
LOW
3/4
LOW
3/4
LOW
3/4
-
1
LOW
1
LOW
Subject to change without prior notice
electrical
Always disconnect power to the unit before
servicing to prevent injury or death due to
electrical shock or contact with moving parts.
All field wiring must comply with local and national
fire, safety and electrical codes. Power to the unit
must be within the operating voltage range
indicated on the unit's nameplate. On three phase
units, phases must be balanced within 2%.
Operating the unit with improper line voltage
or with excessive phase imbalance is
hazardous to the unit and constitutes abuse
and is not covered under warranty.
Properly sized fuses or HACR circuit breakers must
be installed for branch circuit protection. See
equipment rating plates for proper size.
The heat pump units are provided with a concentric
knock-out in the front right corner post for
attaching common trade sizes of conduit. Route
power supply wiring through this opening. Flexible
wiring and conduit should be used to isolate
vibration and noise from the building structure. Be
certain to connect the ground lead to the ground
lug in the control box. Connect the power leads as
indicated on the unit wiring diagrams.
Tap2
Tap3
MED
HIGH
LOW
-
MED
HIGH
MED
HIGH
MED
HIGH
MED
HIGH
LOW
MED
MED
HIGH
-
-
6 720 220 045
CP/BP Series
7
Tap4
Tap5
-
-
MED
HIGH
-
-
-
-
-
-
-
-
HIGH
-
-
-
MED
HIGH
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