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©
2006 Lennox Industries Inc.
Corp. 0628−L5
Revised 02−2007
SSB*H4
Service Literature
SSB*H4 Commercial Air Conditioner
The SSB*H4 is a high efficiency commercial split−system
condensing unit, which features a two stage scroll compres-
sor and R−410A refrigerant. SSB*H4 units are available in 3,
4and 5 ton capacities.. The series is designed for use with
an expansion valve (approved for use with R−410A) in the
indoor unit. This manual is divided into sections which dis-
cuss the major components, refrigerant system, charging
procedure, maintenance and operation sequence.
Information contained in this manual is intended for use by
qualified service technicians only. All specifications are sub-
ject to change.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer or service
agency.
WARNING
Warranty will be voided if covered equipment is re-
moved from original installation site. Warranty will
not cover damage or defect resulting from:
Flood, wind, lightning, or installation and operation
in a corrosive atmosphere (chlorine, fluorine, salt,
recycled waste water, urine, fertilizers, or other dam-
aging chemicals).
DANGER
Shock Hazard
Remove all power at disconnect
before removing access panel.
Single phase SSB*H4 units use
single-pole contactors. Potential
exists for electrical shock resulting
in injury or death.
Line voltage exist at all components
(even when unit is not in operation).
IMPORTANT
Operating pressures of this R−410A unit are higher
than pressures in R−22 units. Always use service
equipment rated for R410A.
TABLE OF CONTENTS
General Page
1
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications / Electrical Data
Page 2
. . . . . . . .
I Application
Page 4
. . . . . . . . . . . . . . . . . . . . . . . .
II Unit Components
Page 4
. . . . . . . . . . . . . . . . . .
III Refrigeration System
Page 12
. . . . . . . . . . . . . .
IV Charging
Page 13
. . . . . . . . . . . . . . . . . . . . . . . .
V Service and Recovery
Page 17
. . . . . . . . . . . . .
VI Maintenance
Page 17
. . . . . . . . . . . . . . . . . . . . .
VII Wiring and Sequence of Operation
Page 18
.
