Double Deck J4PG4 Installation Manual

CAUTION
Before lifting, make sure the unit weight is distributed equally
on the rigging cables so it will lift evenly.
CAUTION
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.
3.6 CLEARANCE
All units require certain clearance for proper operation and service.
Refer to Table 3-1 for the minimum clearances required for
construction, servicing and proper unit operation.
3.7 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 lifting holes provided in the base rails.
Spreader bars, whose length exceeds the largest dimension across
the unit, MUST be used across the top of the unit.
Units may be moved or lifted with a forklift. Slotted openings in the
base rails are provided for this purpose.
Direction
Distance (in.)
Direction
Distance (in.)
Top
Front
Rear
Right
Left
Bottom
48
60
18
24
12
0
Table 3-1: Unit Clearance
1
3
4
2
Duct clearance: 1 inch clearance for all sides of air supply duct.
1. Units must be installed outdoors. Over hanging structure or shrubs
should not obscure condenser air discharge outlet.
2. The minimum clearance without economizer/fresh air damper. For
distance with Economizer/fresh air damper, please refer to the
relevant Install requirement.
3. Units may be installed on combustible floors made from wood or
class A, B or C roof covering materials.
4. If Economizer/fresh air damper is used, a 24″ minimum clearance
is required on left side of unit.
NOTE
For units applied with a roof curb, the minimum clearance may
be reduced from 1 inch to 1/2 inch between combustible roof
curb material and this supply air duct.
Both ends must be
open for downflow or
sideflow ductwork to
provide ventilation
3-1/2″ MIN
Nominal 4×4 timber
(Sides only)
Supply plenum
(Downflow)
Return plenum
(Downflow)
Combustible structure
Fig. 3-1 Exception to non-combustible flooring requirement
1″ MIN
Back View
SUPPLY
DUCT
OPENING
RETURN
DUCT
OPENING
14
* The above figure for reference purpose only.