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507964-01 9/2019
Shipping and Packing List
Package 1 of 1 contains:
1- Assembled unit
Check unit for shipping damage. Receiving party should
contact last carrier immediately if shipping damage is found.
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal injury.
Take care while handling this equipment and wear
gloves and protective clothing.
General
These instructions are intended as a general guide and do
not supersede local codes in any way. Authorities having
jurisdiction should be consulted before installation.
The SG 036 gas/electric packaged rooftop unit is available in
70,000 and 108,000 Btuh heating input. The SC 036 cooling
packaged rooftop unit is the same basic design as the SG
036 unit except for the heating section. Optional electric heat
is factory-installed in SC units. SG and SC 036 units have
identical refrigerant circuits with 3-ton cooling capacities.
The SG 060 gas/electric packaged rooftop unit is avilable in
70,000, 108,000, and 150,000 Btuh heating input. The SC 060
cooling packaged rooftop unit is the same basic design as the
SG 060 unit except for the heating section. Optional electric
heat is factory-installed in SC units. SG and SC 060 units have
identical refrigerant circuits with 5-ton cooling capacities.
The SG 120 gas/electric packaged rooftop unit is available in
130,000, 180,000, or 240,000 Btuh heating inputs. The SC
120 cooling packaged rooftop unit is the same basic design
as the SG 120 unit except for the heating section. Optional
electric heat is factory-installed in SC units. SG and SC 120
units have identical refrigerant circuits with a total of 10-ton
cooling capacities.
The SG 240 gas/electric packaged rooftop unit is
available in (260,000, 360,000, or 480,000 Btuh heating
inputs). The SC 240 cooling packaged rooftop unit is the
same basic design as the SG 240 unit except for the
heating section. Optional electric heat is
factory-installed in SC units. SG and SC 240 units have
identical refrigerant circuits with 20-ton cooling
capacities.
Units are equipped with multi-stage air volume (MSAVt)
supply air blowers.
Units use R410A, an ozone-friendly HFC refrigerant. Refer
to the Cooling Start-Up section (Page 29) for precautions
when installing unit.
Safety
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting
of refrigerant (CFC's and HCFC's) as of July 1, 1992.
Approved methods of recovery, recycling or reclaim
ing must be followed. Fines and/or incarceration may
be levied for non-compliance.
See figure 1 for unit clearances.
C
B
A
D
RECOMMENDED SERVICE CLEARANCES IN (mm)
1
Unit Clearance
A B C D
Top
Clearance
in. mm in. mm in. mm in. mm
Service Clearance
SG/SC 036, 060
72 1829 36 914 60 1524 60 1524
Unobstructed
Service Clearance
SG/SC 120
72 1829 36 914 60 1524 72 1829
Service Clearance
SG/SC 240
72 1829 36 914 60 1524 96 2438
Clearance to Combustibles All 36 914 1 25 1 25 1 25
Minimum Operation Clearance All 36 914 36 914 36 914 36 914
NOTE - Entire perimeter of unit base requires support when elevated above the mounting surface. 1-Service Clearance - Required for removal of
serviceable parts. Clearance to Combustibles - Required clearance to combustible material. Minimum Operation Clearance - Required clear
ance for proper unit operation.
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