Product data

Page 5
Installation, Operation & Maintenance Manual # 036-1009(0608)
LOCATION
Use the following guidelines to select a suitable location for
these units :
1. Unit are designed for outdoor installation only.
2. Condenser coils must have an unlimited supply of air.
3. Where a choice of location is possible, position the unit on
either north or east side of building.
4. For ground level installation, use a level concrete slab. The
length and width should be at least 6 inches greater than the
unit base rails. Do not tie slab to the building foundation.
5. Roof structures must be able to support the weight of
the unit and its options and/or accessories. Unit must be
installed on a solid level roof curb.
6. Maintain level tolerance to 1/2 inch maximum across the
entire length or width of the unit.
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig the
unit by attaching chain or cable slings to the round lifting holes
provided in the base rails. Spreaders, whose length exceeds
the largest dimension across the unit, MUST BE USED. Refer to
Figure 2. Units may also be moved or lifted with a forklift, from
the side only, provided that an accessory skid is used.
LENGTH OF FORKS MUST BE A MINIMUM OF 70”. Refer to the
Product Data Table 5 for unit weights.
CLEARANCES
All units require certain clearances for proper operation and
service. Installer must make provisions for adequate ventilation
air in accordance with applicable provisions of the local building
codes. Refer to Dimensions and Clearances. Refer Figures 7
& 8 for the clearances required for servicing, and proper unit
operation.
DUCTWORK
A closed return duct system should be used. This should not
preclude use of outdoor fresh air intake. The supply and return
air duct connections at the unit should be made with flexible
joints to minimize noise. The supply and return air duct systems
should be designed for the CFM and static requirements of the
job. They should NOT be sized to match the dimensions of the
duct connections on the unit.
Refer to Dimensions and Clearances Figure 8 for information
concerning supply and return air duct openings.
FIXED OUTDOOR AIR INTAKE DAMPER
This damper is shipped inside the return air compartment. It is
completely assembled and ready for installation. Refer to the
Fixed Outdoor Damper Figure 3.
Gasketing and mounting screws are provided in a parts bag.
Adjusting the damper to the desired air flow may be done after
installation by opening or closing dampers with handle.
Damper provides maximum of 25% fresh air when fully opened.
Figure 2: Typical Rigging
BEFORE LIFTING A UNIT, MAKE SURE THAT ALL PANELS ARE IN
PLACE AND THAT ITS WEIGHT IS DISTRIBUTED EQUALLY ON
ALL CABLES SO IT WILL LIFT EVENLY.
WARNING
DO NOT PERMIT OVERHANGING STRUCTURES OR SHRUBS TO
OBSTRUCT OUTDOOR AIR DISCHARGE OUTLET
WARNING
WHEN FASTENING DUCTWORK TO SIDE DUCT FLANGES ON
UNIT, INSERT SCREWS THROUGH DUCT FLANGES ONLY. DO NOT
INSERT SCREWS THROUGH CASING. OUTDOOR DUCTWORK
MUST BE INSULATED AND WATERPROOFED.
WARNING