SSA-SVX06B-EN
7
General Information
Installation procedures should be performed in the sequence that they appear in this manual. Do
not destroy or remove the manual from the unit. The manual should remain weather-protected with
the unit until all installation procedures are complete.
Note:
It is not the intention of this manual to cover all possible variations in systems that may
occur or to provide comprehensive information concerning every possible contingency that
may be encountered during an installation. If additional information is required or if specific
problems arise that are not fully discussed in this manual, contact your local sales office.
This manual covers installation of the TWE air handlers. These air handler models incorporate a
single slab coil assembly, improved application flexibility, servicing, maintenance accessibility and
an improved accessory line. They are fully convertible, (vertical to horizontal discharge) without
field removal of the coil assembly. They are shipped ready for horizontal installation.
All units have one drain pan that can be installed in any one of four positions. This allows for vertical
or horizontal applications and right or left exit.
Important:
All dual circuit (digit 7 = E) have an intertwined coil
Installation Checklist
An “Installation Checklist” is provided at the end of the installation section of this manual. Use the
checklist to verify that all necessary installation procedures have been completed. Do not use the
checklist as a substitute for reading the information contained in the manual. Read the entire
manual before beginning installation procedures.
Unit Inspection
Inspect material carefully for any shipping damage. If damaged, it must be reported to, and claims
made against the transportation company. Compare the information that appears on the unit
nameplate with ordering and submittal data to ensure the proper unit was shipped. Available
power supply must be compatible with electrical characteristics specified on component
nameplates. Replace damaged parts with authorized parts only.
Initial Leak Test
All TWE units are shipped with a holding charge of nitrogen in each circuit. Remove the access
panel shown in
Figure 12, p. 21
. Locate the liquid line or suction line access valve for each circuit.
Install gauges to determine if the circuits are still pressurized. If not, the charge has escaped. Repair
as required to obtain a leak-free circuit.
Lifting Recommendations
WARNING
Improper Unit Lift!
Each of the cables (chains or slings) used to lift the unit must be capable of supporting the
entire weight of the unit. Lifting cables (chains or slings) may not be of the same length. Adjust
as necessary for even unit lift. Other lifting arrangements may cause equipment or property-
only damage. Test lift unit approximately 24 inches to verify proper center of gravity lift point.
To avoid dropping of unit, reposition lifting point if unit is not level.
Failure to properly lift unit could result in unit dropping and possibly crushing operator/
technician which could result in death or serious injury and possible equipment or property-
only damage. Refer to
Table 1
and
Table 2
for unit weight.
