SX Series
3/4 through 6 ton Commercial
and Residential Geothermal
System Installation Instructions
Installation and servicing of air conditioning equipment can be hazardous due to system
pressure and electrical components. Only trained and qualified service personnel should install,
repair or service air conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils and cleaning
and replacing filters. All other operations should be performed by trained service personnel. When
working on air conditioning equipment, observe precautions in the literature, tags and labels
attached to the unit and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing
operations. Have fire extinguisher available for all brazing operations.
WARNING: Before performing service or maintenance operations on system, turn off
main power switches to indoor unit. Turn off accessory heater power switch if applicable.
Electrical shock could cause personal injury.
Move units in the normal “up” orientation as indicated by the arrows on each carton. Horizontal
units may be moved and stored per the information on the carton, “Do not stack more than 3 units
in total height.” Vertical units are not to be moved, but may be stored one upon another at a
maximum height of 2 units. When the equipment is received, all items should be carefully checked
against the bill of lading to be sure all crates and cartons have been received. Examine units for
shipping damage, removing the units from the cartons if necessary. Units in question should also
be internally inspected. If any damage is noted, the carrier should make the proper notation on the
delivery receipt, acknowledging the damage.
P/N 96P537A01 rev. 4/99
Installation
Guide
Safety
Considerations
Moving and
Storage
Model
Nomenclature
Table of
Contents
Initial Desuperheater Start Up 11
Electrical Connections 11-12
Unit Electrical Data 13
Unit Operating Pressures 13
Wiring Schematic 14-15
Thermostat 16
Blower Performance Data 16
Unit Start Up 17-18
Preventive Maintenance 18-19
Troubleshooting 19
Replacement Procedures 19
Model Nomenclature 1
Safety Considerations 1
Moving and Storage 1
Physical Data 2
General Installation Information 2-5
Boiler/Cooling Tower Closed Loop Systems 5
General Piping 6
System Cleaning and Flushing 6-7
Ground Source Closed Loop Systems 7-8
Open Loop Ground Water Systems 8-9
Desuperheater Connection 9-11
0
X
0
T
SXV
Unit Size
036 = 36,000 BTUH Nominal cooling
at 85
°
F entering water
Electrical Characteristics
0 = 208-230/60/1 Commercial
1 = 208-230/60/1 Residential
2 = 265-277/60/1 Commercial
3 = 208-230/60/3 Commercial
4 = 460-480/60/3 Commercial
5 = 575-600/60/3 Commercial
Design Vintage
Model Type
SXV = Vertical Unit
SXH = Horizontal Unit
036
C
C
1
Coax Options
C = Copper
N = Cupronickel
Non-Standard Options
Discharge Air Options
T = Top (Vertical)
E = End (Horizontal)
S = Side (Horizontal)
L
Return Air Options
L = Left return
R = Right return
B = Commercial Microprocessor Unit Controls
C = ElectroMechanical Unit Controls
Hot Water Options
0 = None
1 = Hot Water Generation W/Pump (Residential)
2 = Hot Water Generation Without/Pump (Commercial)
Cabinet
0 = Painted Steel Cabinet
1 =Galvanized Steel Cabinet
