Technical data

Page 8
Isolation Pad
Insulated Sound Baffle
(Open Both Ends and Bottom)
Return Air Louver or Grille
Figure 7. Vertical Sound Attenuation
Field Supplied
Disconnect Switch
Heat Pump
A
Room Thermostat
B
A= Two power wires on single-phase units: three power wires on three-phase units. B= 1 heat /1 cool /Manual or Auto
Change-Over remote 24V thermostat. Note: All customer-supplied wiring to be copper only and must conform to NEC
and local electrical codes. Wiring shown with dashed lines must be field-supplied and field-installed.
DISCONNECT ELECTRICAL POWER
SOURCE TO PREVENT INJURY OR
DEATH FROM ELECTRICAL SHOCK.
USE COPPER CONDUCTORS ONLY
TO PREVENT EQUIPMENT DAMAGE.
Typical Field Installed Wiring
Installing a Vertical Unit
Vertical units are typically installed on the floor or on
shelves designed to support the weight of the unit. Install
the unit on a piece of rubber or neoprene for sound
isolation. The pad should be 1/2" to 3/8" in thickness.
Extend the pad beyond all four edges of unit.
Sound Attenuation for Vertical Units
Sound minimization is achieved by enclosing the unit
within a small mechanical room or a closet. Additional
measures for sound control include the following:
1. Mount the unit so the return air inlet is 90° to the
return air grille. Refer to Figure 7. Install a sound
baffle as illustrated to reduce line of sight sound
transmitted through return air grilles.
2. Mount the unit on a rubber or neoprene isomode pad
to minimize vibration transmission to the building
structure. Extend the pad beyond all four edges of the
unit.
Electrical Wiring
To avoid possible injury or death due to electrical
shock, open the power supply disconnect switch and
secure it in an open position during installation.
Use only copper conductors for field installed
electrical wiring. Unit terminals are not designed to
accept other types of conductors.
All field installed wiring, including electrical ground,
must comply with the National Electrical Code (NEC) as
well as all applicable local codes.
Refer to the unit wiring diagrams included with submittal
drawings for fuse sizes and a schematic of the field
connections which must be made by the installing (or
electrical) contractor.
Consult the unit wiring diagram located on the inside of
the compressor access panel to ensure proper electrical
hookup.
Units rated 208-230 volts which have a 24 Volt
transformer must have the transformer connection
modified if the actual power supply is 230 volts. Refer to
the unit wiring diagram for details of this procedure.
All final electrical connections must be made with a
length of flexible conduit to minimize vibration and
sound transmission to the building.
For additional wiring information pertinent to units
supplied with a ClimateMaster CMC-2000 Series Control
Board, refer to the CMC-2000 Series Installation,
Operation Manual (p/n 69626515) supplied with this
unit.
WARNING
WARNING
▲ CAUTION
!
▲ CAUTION
!