508090-01 Issue 2032 Page 1 of 40
SERVICE MANUAL
4HP14B/4HP15L
(P) 508090-01
*P508090-01*
Table of Contents
Technical Specications - 4HP14B ..............................2
Technical Specications - 4HP15L ..............................5
Technical Specications - Past Models .......................8
Parts Arrangement.....................................................12
General Information ...................................................13
Operating Gauge Set and Service Valves .................13
Installation .................................................................14
Refrigeration Piping ...................................................16
Electrical Wiring .........................................................24
Operation ...................................................................25
Maintenance ..............................................................27
Homeowner Information ............................................27
Start-Up .....................................................................32
Start-Up and Performance Checklist .........................40
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
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