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WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
WARNING
Electric shock hazard! - Disconnect all power
supplies before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
Table of Contents
SPECIFICATIONS .......................................................... 2
Unit Plumbing Parts Arrangement .................................4
I-UNIT COMPONENTS ..................................................5
A-CONTROL BOX COMPONENTS ..............................5
II- REFRIGERANT SYSTEM ......................................... 8
A-Plumbing ....................................................................8
B-Service Valves ...........................................................9
III-START-UP ................................................................10
IV-CHARGING ............................................................. 11
A-Leak Testing ............................................................. 11
B-Evacuating the System ............................................12
C-Charging ...................................................................13
V-MAINTENANCE ........................................................ 16
VI-Wiring Diagram and Sequence of Operation ...........17
ELP
7.5 & 10 TON
Service Literature
UNIT INFORMATION
Corp. 1812-L3
June 25, 2019
ELP SERIES HEAT PUMP UNITS
The ELP090S4S and ELP120S4S 7.5 and 10 (26.4 and
35.2 kW) ton heat pump units are designed for HFC-410A,
light commercial applications, with a remotely located
blower-coil unit or a furnace with an add-on evaporator
coil. ELP model units are equipped with one dual speed
scroll compressor. The ELP heat pumps match with the
ELA blower-coil units. ELP units are all three-phase.
This manual is divided into sections which discuss the ma-
jor components, refrigerant system, charging procedure,
maintenance and operation sequence.
Information in this manual is intended for qualied service
technicians only. All specications are subject to change.
Procedures in this manual are presented as recommen-
dations only and do not supersede or replace local or
state codes.
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.
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