Service Manual -
HRG18xxS1P
508206-01
Issue 2140
Page 1 of 83
SERVICE MANUAL
HRG18xxS1P
(P) 508206-01
*P508206-01*
Table of Contents
Technical Specifications ..............................................2
Parts Arrangement.......................................................5
General ........................................................................8
Installation ...................................................................8
Refrigerant Piping ......................................................10
Electrical - Circuit Sizing and Wire Routing ...............19
Thermostat Control and Low Voltage Control Wiring 19
Outdoor Unitary Control.............................................23
Unit Operation ...........................................................25
Servicing Units Delivered Void of Charge..................29
Unit Start-Up ..............................................................29
System Operation and Service ..................................30
Configuring Unit .........................................................45
Maintenance ..............................................................46
Homeowner Information ............................................46
Wiring Diagram ..........................................................48
Unit Sequence of Operation ......................................49
Component Testing ....................................................53
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
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.
WARNING
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.
CAUTION
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.
WARNING
