2
PRE-INSTALLATION
1. The power supply (v, Ph, and Hz) must correspond to that
specified on unit rating plate.
2. The electrical supply provided by the utility must be suffi-
cient to handle load imposed by this unit.
3. Refer to Installation, General section (page 2) and Fig. 2 for
locations of electrical inlets, condensate drain, duct connec-
tions, and required clearances before setting unit in place.
4. This installation must conform with local building codes and
with the NEC (National Electrical Code) or ANSI (American
National Standards Institute)/NFPA (National Fire Protection
Association) latest revision. Refer to provincial and local
plumbing or wastewater codes and other applicable local
codes.
Moving and Storage
To transfer unit from truck to storage site, use a fork truck. Do not
stack units more than 2 high during storage. If unit is to be stored
for more than 2 weeks before installation, choose a level, dry stor-
age site free from vibration. Do not remove plastic wrap or skid
from unit until final installation.
Rigging
All 40RF Series units can be rigged by using the shipping skid.
Units are shipped fully assembled. Do not remove shipping skids
or protective covering until unit is ready for final placement; dam-
age to bottom panels can result. Use slings and spreader bars as
applicable to lift unit.
INSTALLATION
General
Allow the following clearances for service access and airflow:
• Rear: 2-1/2 ft (914 mm) [2-1/2 ft (762 mm) with electric
heat accessory]
• Front: 2-1/2 ft (762 mm)
• Right Side: 3-1/2 ft (1067 mm)
• Left Side: 2-1/2 ft (762 mm)
For units equipped with an economizer, refer to the accessory
installation instructions for additional clearance requirements. Be
sure floor, wall, or ceiling can support unit weight (Tables 1-3).
See Fig. 2 for dimensions.
Uncrating
Move unit as near as possible to final location before removing
shipping skid.
Remove metal banding, top skid, and plastic wrap. Examine unit
for shipping damage. If shipping damage is evident, file claim
with transportation agency. Remove base skid just prior to actual
installation.
Check nameplate information against available power supply and
model number description in Fig. 1.
NOTE: Be sure to remove the styrofoam shipping pad from the
thermostatic expansion valve (TXV). Verify that it has been
removed. (See Fig. 3.)
Accessories
Refer to instructions shipped with each accessory for specific
information.
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury,
death and/or equipment damage.
These air handling units are dedicated voltages. Unlike older
air handler units the voltage of these units cannot be changed
in the field.
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury,
death and/or equipment damage.
R-410A refrigerant systems operate at higher pressures than
standard R-22 systems. Do not use R-22 service equipment or
components on R-410A refrigerant equipment.
WARNING
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could cause personal injury or
death.
Relieve pressure and recover all refrigerant before system
repair or final unit disposal.
Wear safety glasses and gloves when handling refrigerants.
Keep torches and other ignition sources away from
refrigerants and oils.
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, safety glasses, and
gloves when handling parts and servicing units.
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution could cause equipment damage.
Ensure voltage listed on unit data plate agrees with electrical
supply provided for the unit.
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