Page 1
©
2006 Lennox Industries Inc.
Corp. 0629−L5
Revised 07−2010
SPB*H4
Service Literature
S
−
CLASS
t
SPB*H4 Commercial Heat Pump
The SPB*H4 is a high efficiency commercial split−system
heat pump unit, which features a two stage scroll compres-
sor and HFC−410A refrigerant. SPB*H4 units are available
in 3, 4 and 5 ton capacities. The series designed for use with
an indoor unit with an expansion valve approved for
HFC−410A. This manual is divided into sections which dis-
cuss the major components, refrigerant system, charging
procedure, maintenance and operation sequence.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause personal injury, loss of
life, or damage to property.
Installation and service must be performed by a
licensed professional installer (or equivalent) or a
service agency.
CAUTION
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result
in personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
Information contained in this manual is intended for use by
qualified service technicians only. All specifications are
subject to change.
TABLE OF CONTENTS
Specifications / Electrical
Page 2
. . . . . . . . . . . . .
I Unit Information
Page 5
. . . . . . . . . . . . . . . . . . . .
II Unit Components
Page 6
. . . . . . . . . . . . . . . . . .
III Refrigerant System
Page 16
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IV Charging
Page 19
. . . . . . . . . . . . . . . . . . . . . . . .
V Service and Recovery
Page 26
. . . . . . . . . . . . .
VI Maintenance
Page 27
. . . . . . . . . . . . . . . . . . . . .
VII Brazing Procedure
Page 27
. . . . . . . . . . . . . . .
VIII Wiring Diagram
Page 28
. . . . . . . . . . . . . . . . . .
MODEL NUMBER IDENTIFICATION
S P B
Y
5
036 H
4
4 S
Major Design Sequence
A = 1st Generation
B = 2nd Generation
Brand/Family
S = T−Class
Product Line
Unit Type
P = Heat Pump Outdoor Unit
Nominal Cooling Capacity − Tons
036 = 3 Tons
048 = 4 Tons
060 = 5 Tons
Cooling Efficiency
H = High Efficiency
Minor Design Sequence
1 = 1st Revision
2 = 2nd Revision
3 = 3rd Revision
Voltage
Y = 208/230V-3 phase-60hz
Refrigerant Type
4 = HFC−410A
Part Load Capability
S = Part load capabilities with multi−stage operation
Coil type
4 = Four−sided
