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Pre-Installation
Unit Connections
See
"Connecting Module Power and Control Wires," p. 21
to determine the method of the connection of this unit.
Site Preparation and Clearances
Heat pump modules be installed on a 4-inch tubing or a 6-
inch I beams on a level surface that has been checked by a
qualified structural engineer to support the weight of the
fluid-filled modules and the connective piping to and from
the heat pump. Installations must account for minimum
service access clearances as may be practical or required
by local building codes.
Heat Pump Clearances
One of the most critical factors affecting the performance of
air-to-water heat pump is airflow above and around the
heat pump modules. Walls, roofs, overhangs, and nearby
mechanical heat sources can all degrade heat pump
performance. A heat pump located away from such
obstacles operates more efficiently.
Minimum Clearances
The unit must maintain a minimum of 36 inches clearance
on all sides. No obstructions are allowed above units. See
Figure 2, p.
12.
The air coils are designed for outdoor installation and must
be mounted level on a roof or concrete slab that is strong
enough to support the total equipment operating weight.
Consult a professional structural engineer to determine
safe mounting loads.
Unrestricted airflow must be provided to air coils. Avoid air
recirculation from other nearby equipment. Locate the air
coils away from building air vents and heat sources such as
exhaust fans.
The unit should be located away from any wall or other
obstruction to provide adequate clearance for ambient air
intake and discharge.
ARTC-SVX009A-EN
There should be no obstruction above the heat pump
module to interfere with fan discharge of heated air. Even a
partial overhang of an eave or awning can trap hot air and
significantly degrade heat pump performance.
Each heat pump module must be as far away from any wall
or barrier as space allows. Sufficient clearance must be
maintained between the heat pump modules and any walls
or other objects that can interfere with the free flow of air to
the air coils.
Screening fences must have 50% open surface area, with
one foot of bottom clearance, and must not extend higher
than the top of the fan grill. Modules must be a minimum of
36 inches away from any fence. Failure to follow these
minimum requirements may result in performance
degradation.
Modules located in a sub-level or pit require special
considerations to avoid air recirculation.
Do not attach ductwork to any fan or fan shroud.
If the desired location for the heat pump is confined by
walls, fences, overhanging roof eaves, or is located in a pit
(sub-level site), contact Trane to discuss potential impact
on equipment performance.
The National Electric Code or local, state, and regional
building codes may require greater clearance for the
modular heat pump than the figures listed in this
publication. Always consult local regulatory agencies for
any additional clearances required by building codes.
Service Access
Clearance must be maintained between the module and
any nearby wall or impediment to provide sufficient room to
open power distribution panel and electrical and control
panel doors for routine maintenance and servicing. In
general, 36 inches of space is required to allow panel doors
to fully swing open and to meet local and national electrical
codes. Compressors, filter-strainers, and liquid line shutoff
valves are accessible on each side or end of each chiller.
11
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