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Roof Curb Assembly
Figure 2
Table 1
Roof Curb Installation
If a roof curb is used, follow the manufacturer’s Installation
Instructions and be sure that all required clearances are
observed (see following Clearances section).
Clearances
All units require certain clearances for proper operation and
service. Refer to Table 1 for the minimum clearances to
combustibles as well as minimum clearances necessary
for servicing and proper unit operation.
In the U.S., units may be installed on combustible floors
made from wood or class A, B, or C roof covering material.
In Canada, units may be installed on combustible floors.
Service Access
Access to all serviceable components is provided by four
removable panels: filter compartment, blower compart-
ment, heater compartment, and top panel.
Condensate Drain
The SH package unit is equipped with a 3/4" FPT cou-
pling for condensate line connection. Plumbing must
conform to local codes. Use a sealing compound on male
pipe threads.
The condensate drain line must be properly trapped
and routed to a suitable drain. See Figure 3 for proper
drain arrangement. The drain line must pitch to an open
drain or pump to prevent clogging of the line. Seal around
the drain connection with suitable material to prevent air
leakage into the return air system.
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Minimum Clearance Requirements
Unit
Drain Connection
Positive Liquid Seal Required
3.00" Min.
1.00" Min.
12.00"
Max.
Typical Condensate Drain Connection
Figure 3
Using Accessory Lift Kit
Figure 1
To avoid possible
damage to unit
panels from lifting
clevis, place
packing material
between clevis
and panels before
lifting unit.
Spreaders
(Field Supplied)
Lifting Bracket
Accessory
Sheet Metal
Screw