Trane Axiom VSHE024 Manual

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and
training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.
Water Source Heat Pump
Axiom™ Variable Speed - VSH/VSV
24 to 60 MBtuh - 60 Hz
Installation, Operation,
and Maintenance
Model Numbers VSHE024 VSVE024
VSHE033 VSVE033
VSHE042 VSVE042
VSHE050 VSVE050
VSHE060 VSVE060
WSHP-SVX13C-EN
January 2015

© 2015Trane All rights reserved WSHP-SVX13C-EN
Introduction
Read this manual thoroughly before operating or servicing
this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required.Your personal safety and the proper operation of
this machine depend upon the strict observance of these
precautions.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these
compounds have the same potential impact to the
environment.Trane advocates the responsible handling of
all refrigerants-including industry replacements for CFCs
such as HCFCs and HFCs.
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle
refrigerants must be certified.The Federal Clean Air Act
(Section 608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain
refrigerants and the equipment that is used in these
service procedures. In addition, some states or
municipalities may have additional requirements that
must also be adhered to for responsible management of
refrigerants. Know the applicable laws and follow them.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTIONsIndicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury. It
could also be used to alert against
unsafe practices.
NOTICE Indicates a situation that could result in
equipment or property-damage only
accidents.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards.To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Installing/servicing this unit could result in exposure to
electrical, mechanical and chemical hazards.
• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Material Safety Data
Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA
guidelines for proper PPE.
• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate MSDS/SDS and
OSHA/GHS (Global Harmonized System of
Classification and Labelling of Chemicals) guidelines
for information on allowable personal exposure
levels, proper respiratory protection and handling
instructions.
• If there is a risk of energized electrical contact, arc, or
flash, technicians MUST put on all PPE in accordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PERFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.
Failure to follow instructions could result in death or
serious injury.

Introduction
WSHP-SVX13C-EN 3
Copyright
This document and the information in it are the property of
Trane, and may not be used or reproduced in whole or in
part without written permission.Trane reserves the right
to revise this publication at any time, and to make changes
to its content without obligation to notify any person of
such revision or change.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
Revision History
WSHP-SVX13C-EN (03 January 2015)
• Added the option of a plenum fan allowing the unit to
work at higher external static pressures (ESP)
• Added selection of new motor
• Added option of insulated water coil and suction line
• Condensate drain update

4 WSHP-SVX13C-EN
Table of Contents
Introduction ............................. 2
Warnings, Cautions, and Notices ........ 2
Important Environmental Concerns ..... 2
Important Responsible Refrigerant Practices
2
Copyright ............................. 3
Table of Contents ........................ 4
Model Number Description - VSH/VSV ..... 6
General Information ..................... 7
Unit Inspection ...................... 7
Jobsite Inspection ................... 7
Jobsite Storage ..................... 7
Model Number Description ............ 7
Unit Description ..................... 7
Unit Nameplate ..................... 7
Compressor Nameplate ............... 8
Air-to- Refrigerant Coil ................ 8
Water-to-Refrigerant Coil .............. 8
Controls ............................ 8
System Input Devices and Functions .... 8
Pump Module (field installed accessory) . 8
Unit Dimensions ......................... 9
Clearance Dimensions .................. 9
Unit Fan Performance ................... 26
MERV Filter .......................... 34
General Data ........................... 36
Installation ............................. 39
General Installation Checks ........... 39
Supply-Air Ductwork ................ 39
Return-Air Ductwork ................. 40
Return Air Ducted Panel .............. 40
Ducted Filter Rack ................... 40
Sound Attenuation Pad .............. 41
Hanging the Horizontal Unit .......... 41
Condensate Drain Connection ......... 41
Supply/Return Pipe Connections ...... 41
Cleaning and Flushing the Water Loop . 42
Field Installed Power Wiring .......... 43
Main Unit Power Wiring ..............43
Control Power Transformer ...........43
Sensor Location .....................43
Installation of the Axiom model VS .....44
Electrical Data ...........................45
Variable-Speed WSHP Tracer™ UC400 Control-
ler ......................................47
I/O Definitions .......................47
UC400 Setpoints and Setup Parameters ..48
Sequence of Operation ...................49
Random Start Timer ...................49
Maintenance Timer ....................49
Setpoint Arbitration ....................49
Sensor Arbitration .....................49
Occupancy Determination ..............49
Occupied mode .....................49
Unoccupied mode ...................50
Occupied Standby mode ..............50
Occupied Bypass mode ...............50
Timed override operation .............50
Supply fan mode operation ...........50
Supply fan mode: Cycling .............50
Supply fan mode: ON ................50
Zone sensor fan switch ...............50
Unit Mode Arbitration ................51
Manual mode determination ..........51
Auto-Changeover ....................51
Isolation Valve Operation .............51
Isolation Valve “ON” Control ..........51
Entering water temperature (EWT) sampling
52
Isolation Valve “OFF” Control .........52
Reversing Valve Operation ............52
Cooling and Heating Operation ........52
Unoccupied Cooling and Heating Operation
52
Demand Limit Operation ..............52
Pre-Start Checklist .......................53
Start-Up ................................54

Table of Contents
WSHP-SVX13C-EN 5
Operating Pressures .................. 54
Water Pressure Drop .................. 58
Water Volume ...................... 58
Maintenance ........................... 59
Preventive Maintenance ............. 59
Condensate Trap ................... 59
Troubleshooting ........................ 60
General Unit Troubleshooting .......... 60
Compressor Drive Troubleshooting ..... 61
Pressure transducer/controller ......... 62
Control Wiring ......................... 63