Minimum Clearance Requirements
| To | For | For | |
| Combustible | Proper | ||
| Service | |||
| Material | Operation | ||
|
| |||
|
|
|
| |
Front | 0" | 48" | 3" | |
|
|
|
| |
Rear | 0" | 24" | 3" | |
|
|
|
| |
Condenser | 0" | 24" | 3" | |
End | ||||
|
|
| ||
|
|
|
| |
Blower | 0" | 30" | 0" | |
End | ||||
|
|
| ||
|
|
|
| |
Top | 0" | 36" | 36" | |
|
|
|
|
Table 1
Units may also be moved or lifted with a forklift while still in the
CAUTION
Before lifting a unit, make sure that the weight is distributed equally on the cables so that it will lift evenly.
Roof Curb Installation
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 SA package unit is equipped with a 3/4" FPT coupling 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.
Typical Condensate Drain Connection
Unit | Drain Connection |
1.00" Min.
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).
12.00"
Max.
3.00" Min.
Roof Curb Assembly
Figure 2
Positive Liquid Seal Required
Figure 3
Ductwork
Ductwork should be designed and sized according to the methods in Manual Q of the Air Conditioning Contractors of America (ACCA).
A closed return duct system shall be used. This shall not preclude use of economizers or outdoor fresh air intake. It is recommended that supply and return duct connections at the unit be made with flexible joints.
# 48392M005 | Page 3 |
