9
24
(610)
24
(610)
FRONT VIEW
SIDE VIEW
SIDE VIEW
SUPPLY
AIR
SUPPLY
AIR
59 (1499)
(Service Clearance
Front of Unit)
DROP CEILING
3/4
(19)
WALL WALL
CEILING AND FLOOR APPLICATIONS
FLOOR APPLICATIONS
Unit Flush with Wall
59 (1499)
(Service Clearance
Floor
1 (25) Minimum
1 (25) Minimum
1 (25)
Minimum
Figure 10.
Torque Requirements for Caps and Fasteners
When servicing or repairing HVAC components, ensure
the fasteners are appropriately tightened. “Table 1. Torque
Requirements” provides torque values for fasteners.
IMPORTANT
Only use Allen wrenches of sufcient hardness (50Rc -
Rockwell scale minimum). Fully insert the wrench into
the valve stem recess.
Service valve stems are factory-torqued from 9 ft.-lbs.
(12 N) for small valves, to 25 ft.-lbs. (34 N) for large
valves) to prevent refrigerant loss during shipping and
handling. Using an Allen wrench rated at less than 50Rc
risks rounding or breaking off the wrench, or stripping
the valve stem recess.
See the Lennox Service and Application Notes C-08-1
for further details and information.
Table 1. Torque Requirements
Parts
U.S. Newton-Meter- N
Service valve cap 8 ft.-lb. 11
Sheet metal screws 16 in.-lb. 2
Machine screws #10 27 in.-lb. 3
Compressor bolts 7 ft.-lb. 10
Gauge port seal cap 8 ft.-lb. 11
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