WSHP-SVX014J-EN
27
Installation
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/national
electrical codes.
General Installation Checks
The checklist below is a summary of the steps required to
successfully install a commercial unit. This checklist is
intended to acquaint the installing personnel with what is
required in the installation process. It does not replace the
detailed instructions that are in the applicable sections of
this manual.
1. Remove packaging and inspect the unit. Check the unit
for shipping damage and material shortage; file a
freight claim and notify appropriate sales
representation.
The EXH/V 0.75 to 6 tons and DXH/V 2 to 6 tons have
been anchored to the skid with (4) angle brackets.
Remove these brackets before lifting unit into place.
2. Verify the correct model, options and voltage from the
unit nameplate.
3. Pull out all field attached parts (i.e. filter rack, duct
collar, filter and mounting screws) from the unit
packaging for field mounting.
4. Verify the installation location of the unit will provide the
required clearance for proper operation.
5. Remove refrigeration access panel and inspect the
unit. Be certain the refrigerant tubing has clearance
from adjacent parts.
6. Fabricate and install duct work
7. Install and connect a condensate drain line and trap to
the drain connection.
Main Electrical
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
1. Verify the power supply complies with the unit
nameplate specifications.
2. Inspect all control panel components; tighten any loose
connections.
3. Connect properly sized and protected power supply
wiring to a field-supplied/installed disconnect switch
and to the main compressor contactor/power block 1K1
for DXH/V 2 to 6 tons and EXH/V 0.75 to 6 ton units.
4. Install proper grounding wires to an earth ground.
Note: All field-installed wiring must comply with NEC and
applicable local codes.
Electric Heat Requirements
1. Verify that the power supply complies with the electric
heater specifications on the unit and heater nameplate.
2. Inspect the heater junction box and control panel;
tighten any loose connections.
3. Check electric heat circuits for continuity.
Low Voltage Wiring (AC)
Requirements
1. Install the zone sensor or thermostat.
2. Connect properly sized control wiring to the proper
termination points between the zone thermostat or
sensor and the unit control panel.
Filter Installation
Each unit ships with 1 in. (25.4 mm) standard, 2 in. (50.8
mm) standard, 2 in. MERV 8 or 2 in. MERV 13 filter. The
quantity of filters is determined by unit size. The EXH and
DXH units require field installation of the 1 in. or 2 in. filters
rack. All sheet metal bracket, filter and hardware are in a
box located on the side of the unit within the unit
packaging. All vertical units ship with the filter rack and
filters factory installed.
Note: Do not operate the unit without filters.
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