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5011492-XIM-B-0815
Johnson Controls Unitary Products
9
Clearances
All units require particular clearances for proper operation and
service. Installer must make provisions for adequate
combustion and ventilation air in accordance with section 5.3 of
Air for Combustion and Ventilation of the National Fuel Gas
Code, ANSI Z223.1 – Latest Edition (in U.S.A.), or Sections 7.2,
7.3, or 7.4 of Gas Installation Codes, CSA-B149.1 (in Canada) -
Latest Edition, and/or applicable provisions of the local building
codes. Refer to Table 17 for clearances required for
combustible construction, servicing, and proper unit operation.
LENGTH OF FORKS MUST BE A MINIMUM OF 1067MM
(42”).
Condensate Drain
Plumbing must conform to local codes. Use a sealing
compound on male pipe threads. Install a condensate drain line
from the 3/4” NPT female connection on the unit to an open
drain.
NOTE:
The condensate drain operates in a negative pressure
in the cabinet. The condensate drain line MUST be
trapped to provide proper drainage. See Figure 1.
Compressors
Units are shipped with compressor mountings factory-adjusted
and ready for operation.
Units with scroll compressors have a shipping bracket which
must be removed after the unit is set in place. See Figure 2.
Filters
25 mm (1”) or 51 mm (2”) filters can be supplied with each unit.
Filters must always be installed ahead of the evaporator coil
and must be kept clean or replaced with same size and type.
Dirty filters will reduce the capacity of the unit and will result in
frosted coils or safety shutdown. Minimum filter area and
required sizes are shown in Physical Data Table 11.
Service Access
The following removable panels provide access to all
serviceable components:
•
Compressor compartment
•
Electric Heat compartment
•
Gas Heat compartment
•
Blower compartment
•
Main control box
•
Filter compartment
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet, combustion air
inlet or vent outlets.
All panels must be secured in place when the unit is
lifted.
The condenser coils should be protected from rigging
cable damage with plywood or other suitable material.
Figure 1: Recommended Drain Piping
Figure 2: Compressor Restraining Bracket
Do not loosen compressor mounting bolts.
WIRE TIE (CUT AND REMOVE)
MOUNTING
BRACKET TOP
(REMOVE)
MOUNTING
BRACKET BASE
REMOVE THESE
SCREWS (2)
COMPRESSOR