Page 2
505366M 01/08
Unit Dimensions − inches (mm)
SUCTION AND LIQUID LINE
CONNECTIONS
SIDE VIEW
OUTDOOR COIL FAN
A
B
A
OPTIONAL UNIT STAND-OFF KIT
(4) (FIELD−INSTALLED)
Discharge Air
SIDE VIEW
COMPRESSOR
Model Number A B
13ACD−018 24−1/4 (616) 25−1/4 (641)
13ACD−024 24−1/4 (616) 25−1/4 (641)
13ACD−030 24−1/4 (616) 33−1/4 (845)
13ACD−036 24−1/4 (616) 33−1/4 (845)
13ACD−042 28−1/4 (718) 29−1/4 (743)
13ACD−048 28-1/4 (718) 37−1/4 (946)
13ACD−060 28-1/4 (718) 33−1/4 (845)
WARNING
This product and/or the indoor unit it is matched
with may contain fiberglass wool.
Disturbing the insulation during installation,
maintenance, or repair will expose you to fiberglass
wool dust. Breathing this may cause lung cancer.
(Fiberglass wool is known to the State of California
to cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact
your supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
General Information
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
who have jurisdiction before installation.
When servicing or repairing HVAC components, ensure
caps and fasteners are appropriately tightened. Table 1
lists torque values for typical service and repair items.
Table 1. Torque Requirements
Part Recommended Torque
Service valve cap 8 ft.− lb. 11 NM
Sheet metal screws 16 in.− lb. 2 NM
Machine screws #10 28 in.− lb. 3 NM
Compressor bolts 90 in.− lb. 10 NM
Gauge port seal cap 8 ft.− lb. 11 NM
USING MANIFOLD GAUGE SETS
When checking the system charge, use a manifold gauge
set that features low−loss anti−blow back fittings. See figure
1 for a typical manifold gauge connection setup.
OPERATING SERVICE VALVES
IMPORTANT
Only use Allen wrenches of sufficient hardness
(50Rc − Rockwell Harness Scale minimum). Fully
insert the wrench into the valve stem recess.
Service valve stems are factory−torqued (from 9
ft−lbs for small valves, to 25 ft−lbs 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.
The liquid and suction line service valves are typically used
for removing refrigerant, flushing, leak testing, evacuating,
checking charge and charging.
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