CVH8, HVH8, TVH8, VA9, HVA9, TVA9: APPLICATION GUIDELINE & SERVICE MANUAL
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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APPLICATION GUIDELINE & SERVICE MANUAL
TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
REFRIGERANT PIPING LENGTH LIMITATIONS . . . . . . . . . . . . 3
LONG LINE APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Aluminum Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unit Electrical Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MAJOR COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
COMMUNICATION and STATUS FUNCTION LIGHTS . . . . . . . 6
Check Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FAULT CODES / DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . 13
Variable Speed Drive LED Location and Description (Sizes 25, 36,
37, 48, 49 and 60). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Variable Speed Drive LED Location and Description (Size 24). 25
COMPRESSOR POWER HARNESS ASSEMBLY REPLACE
MENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SmartSense Assembly w/Shield Gasket Removal and Installation28
COMPRESSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . 31
WIRING DIAGRAMS - *VA9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
WIRING DIAGRAMS - *VH8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
REFRIGERATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Servicing Systems on Roofs With Synthetic Materials . . . . . . . . 36
Brazing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Service Valves and Pumpdown . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pumpdown & Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Suction Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Thermostatic Expansion Valve (TXV) . . . . . . . . . . . . . . . . . . . . 38
Accumulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
REFRIGERATION SYSTEM REPAIR. . . . . . . . . . . . . . . . . . . . . . 39
Leak Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or
use can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory–authorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with the kits or accessories
when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and follow all
warnings or cautions included in literature and attached to the unit.
Consult local building codes and current editions of the National
Electrical Code (NEC) NFPA 70. In Canada, refer to current editions of
the Canadian electrical code CSA 22.1.
Recognize safety information. This is the safety–alert symbol
. When
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury.
Understand these signal words; DANGER, WARNING, and CAUTION.
These words are used with the safety–alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury or
death. WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
CVH8, HVH8, TVH8, VA9, HVA9, TVA9
WARNING
!
EXPLOSION HAZARD
Failure to follow this warning could result in
death, serious personal injury, and/or property
damage.
Never use air or gases containing oxygen for
leak testing or operating refrigerant
compressors. Pressurized mixtures of air or
gases containing oxygen can lead to an
explosion.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing and gloves when handling parts.
WARNING
!
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal injury or
equipment damage.
R-410A systems operate at higher pressures than standard R-22
systems. Do not use R-22 service equipment or components on R-410A
equipment. Ensure service equipment is rated for R-410A.
