Step 3-Review Location And Recommendation Information - Trane 4WCZ6036A Installer's Manual

Installer's Guide
Step 3—Review Location and Recommendation Information
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Caution must be taken at all times to avoid personal injuries
and/or damage to equipment.
NOTE: The unit is shipped for horizontal installation.
Horizontal Airflow Units
1. Location of the unit must allow service clearance around it to
ensure adequate serviceability, maximum capacity, and peak
operating efficiency.
2. These units are design certified for outdoor installation. They
may be installed directly on a slab, wood flooring, or on Class
A, B, or C roof covering material. The discharge air from the
condenser fans must be unrestricted for a minimum of 3 feet
above the unit.
3. Check the handling facilities to ensure the safety of personnel
and the unit.
4. The unit must be mounted level for proper drainage of water
through the drain holes in the base pan.
5. The unit should not be exposed to direct roof water runoff.
6. Flexible duct connectors must be of a flame retardant
material. All duct work outside of the structure must be
insulated and weatherproofed in accordance with local codes.
7. Holes through exterior walls or roof must be sealed in
accordance with local codes.
8. All fabricated outdoor ducts should be as short as possible.
Clearances
1. The recommended clearances for single-unit installations are
illustrated in Figures 1 through 6 pages 4-9.
2. Any reduction of the unit clearances indicated in these figures
may result in condenser coil starvation or the recirculation of
warm condenser air. Actual clearances, which appear to be
inadequate should be reviewed with a local engineer.
3. See the unit's nameplate for the absolute minimum clearance
between the unit and any combustible surfaces.
Page 10
CAUTION
Down Airflow Units
1. Location of the unit must allow service clearance around it to
ensure adequate serviceability, maximum capacity, and peak
operating efficiency.
2. Refer to the Installation section (page 9) for instruction on
converting the supply and return airflow covers to down
airflow.
3. The field assembled Roof Mounting Curb (BAYCURB050A
or BAYCURB051A) or a field fabricated curb should be in
place before the unit is hoisted to the roof top.
IMPORTANT: The Roof Mounting Curb (frame) must be
installed on a flat, level section of the roof (maximum of
1/4" per foot pitch) and provide a level mounting
surface for the unit. Also, be sure to provide sufficient
height above the roof to prevent water from entering the
unit.
4. Be sure the mounting curb spans structural members
(trusses) of the roof, thereby providing sufficient support
for the weight of the unit, the curb, the duct(s), and any
factory or field installed accessories.
5. Be sure the hole in the structure for the ducts is large
enough to accommodate the fabricated ducts and the
insulation surrounding them.
6. These units are design certified for outdoor installation.
They may be installed directly on a slab, wood flooring, or
on Class A, B, or C roof covering material. The discharge
air from the condenser fans must be unrestricted for a
minimum of three (3) feet above the unit.
7. Exhaust vents or other sources of contaminated air should
not be near the unit's air inlet if outside air is to be
introduced as make-up air or a ventilation feature is to be
used. Contamination from exhaust vents or chimneys may
also foul the condensor causing degraded performance.
8. Check the handling facilities to ensure the safety of
personnel and the unit(s).
Clearances
1. The recommended clearances for single-unit installations are
illustrated in Figures 1 through 6, pages 4-9.
2. Any reduction of the unit clearances indicated in these figures
may result in condenser coil starvation or the recirculation of
warm condenser air. Actual clearances, which appear to be
inadequate should be reviewed with a local engineer.
3. See the unit's nameplate for the absolute minimum clearance
between the unit and any combustible surfaces.