Duct Connections; Condensate Drain Connection - Lennox SGH036 Installation Instructions Manual

DD
(20-TON SHOWN)

Duct Connections

All exterior ducts, joints, openings in roof or building walls
must be insulated and weather-proofed with flashing and
sealing compounds in accordance with applicable codes.
Any duct passing through an unconditioned space must be
insulated.
CAUTION
In downflow applications, do not drill or punch holes
in base of unit. Leaking in roof may occur if unit base
is punctured.
Rigging Units For Lifting
Rig unit for lifting by attaching four cables to holes in unit
base rail. See figure 3.
1- Detach wooden base protection before rigging.
2- Connect rigging to the unit base using both holes in
each corner.
3- All panels must be in place for rigging.
4- Place field‐provided H‐style pick in place just above
top edge of unit. Frame must be of adequate strength
and length. (H-style pick prevents damage to unit.)
5- Lifting point should be directly above center of gravity.
See figure 3 for center of gravity dimensions. Corner
"DD" is on the left corner when facing compressors and
heat section.
507964-01 9/2019
LIFTING POINT SHOULD
BE DIRECTLY ABOVE
CENTER OF GRAVITY
UNIT TOP VIEW
3 Ton:
5 Ton:
10 Ton:
20 Ton:
RIGGING
CAUTION - Do not
walk on unit.
3 & 5 Ton: 31-7/8" ( 810mm)
10 Ton: 37" ( 940mm)
20 Ton: 61-1/4" (1556mm)
DD
35-3/4" ( 908mm)
34-3/4" ( 883mm)
42-1/2" (1080mm)
38-1/8" ( 968mm)
FIGURE 3
Condensate Drains
Make drain connection to the 1" N.P.T. drain coupling
provided on unit. A trap must be installed between drain
connection and an open vent for proper condensate
removal. See figure 4. It is sometimes acceptable to drain
condensate onto the roof or grade; however, a tee should
be fitted to the trap to direct condensate downward. The
condensate line must be vented. Check local codes
concerning condensate disposal. Refer to pages 1, 2 and 3
for condensate drain location.

CONDENSATE DRAIN CONNECTION

CAULK AROUND CONDENSATE COUPLING
NOTE - Allow clearance to open doors
when installing condensate piping.
Minimum Pitch
1" (25 mm) per
10' (3 m) of line
Page 10
*Weight
Unit
Lbs.
SG 036
966
SC 036
965
SG 060 1000
SC 060
995
SG 120
1757
SC 120
1699
SG 240
3204
SC 240
3074
*Maximum weight with all available
factory-installed accessories.
IMPORTANT - ALL PANELS MUST
BE IN PLACE FOR RIGGING.
OPEN VENT
Á Á Á
Á Á Á Á
Á Á Á Á Á Á Á
MOUNTING FRAME
FIGURE 4
Kg.
438
438
454
451
797
771
1453
1394
UNIT