AIR HANDLER INSTALLATION INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
Table of Contents
IMPORTANT SAFETY INSTRUCTIONS ....................................... 1
IMPORTANT NOTE TO THE OWNER REGARDING
PRODUCT WARRANTY................................................................. 3
SHIPPING INSPECTION................................................................ 3
CODES AND REGULATIONS........................................................ 3
REPLACEMENT PARTS................................................................ 3
PREINSTALLATION INSTRUCTIONS .......................................... 3
LOCATION...................................................................................... 3
DUCTWORK ................................................................................... 3
Return Ductwork.......................................................................... 4
Return Air Filters .......................................................................... 4
ELECTRIC HEAT............................................................................ 4
HKR Installation ........................................................................... 4
ELECTRICAL SUPPLY WIRE AND MOP ..................................... 5
Building Electrical Service Inspection ......................................... 5
Wire Sizing ................................................................................... 5
Maximum Overcurrent Protection (MOP).................................... 5
Electrical Connections—Supply Voltage..................................... 5
Air Handler Only—Nonheat Kit Models....................................... 5
Air Handler With Noncircuit Breaker Heat Kits............................ 5
Air Handler With Heat Kits Containing a Circuit Breaker............ 5
Low Voltage Connections............................................................ 6
REFRIGERANT LINES ................................................................... 6
Tubing Preparation ...................................................................... 6
Special Instructions ..................................................................... 6
DOWNFLOW CONVERSION......................................................... 7
Horizontal Conversion ................................................................. 7
CONDENSATE REMOVAL ............................................................ 8
ACHIEVING 2% LOW LEAKAGE RATE ....................................... 9
WAHMS MOTOR............................................................................ 9
Motor Speed Adjustment ............................................................ 9
WAHME MOTOR............................................................................ 9
CFM Delivery ............................................................................... 9
THERMOSTATS........................................................................... 10
START-UP PROCEDURE............................................................ 10
REGULAR MAINTENANCE......................................................... 10
WIRING DIAGRAMS .................................................................... 10
System Composite Diagram—WAHMS 18 to 60—
10kW and Below........................................................................ 10
System Composite Diagram—WAHMS 18 to 60—
Above 10kW............................................................................... 11
Wiring Diagram—Low Voltage for WAHMS Cooling Unit
with Optional Heat Kit 10kW and Below................................... 11
Wiring Diagram—Low Voltage for WAHMS Cooling Unit
with Optional Heat Kit 15kW and Above................................... 12
WAHME THERMOSTAT CONNECTIONS.................................. 12
Thermostat Connection—WAHME Cooling Unit
with Optional Heat Kits of 10kW and Below............................. 13
Thermostat Connection—WAHME Cooling Unit
with Optional Heat Kits of 15kW and Above—
Thermostat with 2-Stage Heat .................................................. 13
Thermostat Connection—WAHME Heat Pump Unit
with Optional Heat Kits of 10kW and Below............................. 14
Thermostat Connection—WAHME Heat Pump Unit
with Optional Heat Kits of 15kW and Above............................. 14
ELECTRONIC BLOWER TIME DELAY RELAY.......................... 15
ASSISTANCE OR SERVICE ........................................................ 16
Whirlpool
®
Models WAHMS, WAHME
WPIO-355E
ATTENTION INSTALLATION PERSONNEL
As a professional installer, you have an obligation to know the product better than the customer. This includes all
safety precautions and related items. Prior to actual installation, thoroughly familiarize yourself with this instruction
manual. Pay special attention to all safety warnings. Often during installation or repair, it is possible to place
yourself in a position which is more hazardous than when the unit is in operations.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a
customer in its safe use. Safety is a matter of common sense...a matter of thinking before acting. Most dealers have
a list of specific good safety practices...follow them.
The precautions listed in this installation manual are intended as supplemental to existing practices. However, if
there is a direct conflict between existing practices and the content of this manual, the precautions listed here take
precedence.
To Next Page
Need help?
General
