3. Installation of Unit
3-1. Inspection
1) Check for damage after unit is unloaded. Report promptly, to the carrier, any damage found to unit. Do
not drop unit.
2) Check the unit nameplate to determine if the unit voltage is correct for the application. Determine if
adequate electrical power is available. Refer to the application specifications.
3) Check to be sure the refrigerant charge has been retained during shipment. Access to 1/4" flare
pressure taps may be gained by removing compressor compartment access panel.
3-2. Location and Recommendations
1) Unit Support
If unit is to be roof mounted check building codes for weight distribution requirements.
2) Location and Clearances
Installation of unit should conform to local building codes and the National Electrical Code.
Select a location that will permit unobstructed airflow into the condenser coil and away from the fan
discharge and permit unobstructed service access into the compressor compartment. Suggested
airflow clearances and service clearances are given in Figure 1.
3) Placing and Rigging
Rig the unit using either belt or cable slings. The sling eyelet must be placed through the lifting holes in
the base rail of the unit. The point where the slings meet the lifting eyelet should be at least 6 feet
above the unit. Use spreader bars to prevent excessive pressure on the top of the unit during lifting.
Important: The use of "spreader bars" is required when hoisting the unit (prevents damage to
sides and top). Top crating can be used as spreader bars.
Lifting Beam
4) Roof Mounted Units
Downflow units(only 5RT) should be mounted on a roof curb when possible. On new roofs, the curb
should be welded directly to the roof deck. For existing construction, nailers must be installed under
the curb if welding is not possible. Be sure attach the downflow ductwork to the curb before setting unit
in place.
When installing the unit, it must be level to insure proper condensate flow from the unit drain pan.
5) Slab Mount
"For ground level installation, the unit base should be adequately supported and hold the unit near
level. The installation must meet the guidelines set forth in local codes."
Spreader Bar
Cable
or Chain
Holes in Base
Clevis
Rail
6
Lifting Beam
Recommended
Rigging Method
Cable
or Chain
Holes in Base
Clevis
Rail
Figure 2