Trane RT-SVX38C-EN, Инструкция по установке, эксплуатации и обслуживанию

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Installation
18 RT-SVX38C-EN
Figure 15, p. 18 and Figure 16, p. 18 illustrate the supply
and return air openings in a downflow configuration.
To minimize air noise due to turbulence and to reduce
static pressure, use elbows with turning vanes or splitters.
When attaching the ductwork to the unit, provide a water
tight flexible connector at the unit to prevent operating
sounds from transmitting through the ductwork.
All outdoor ductwork between the unit and the structure
should be weather proofed after installation is completed.
Roof Curb
Downflow
The roof curbs for these units consists of a “full perimeter”
enclosure to support the unit just inside of the unit base
rail.
Before installing any roof curb, verify the following:
• It is the correct curb for the unit
• It includes the necessary gaskets and hardware
• The installation location provides the required
clearance for proper operation
• The curb is level and square; the top surface of the curb
must be true to assure an adequate curb-to-unit seal
Verify that appropriate materials were used in the
construction of roof and ductwork. Combustible materials
should not be used in the construction of ductwork or roof
curb that is in close proximity to heater elements or any
hot surface. Any combustible material on the inside of the
unit base should be removed and replaced with
appropriate material.
Step-by-step curb assembly and installation instructions
ship with each accessory roof curb kit. Follow the
instructions carefully to assure proper fit-up when the unit
is set into place.
Note: To assure proper condensate flow during
operation, as well as proper operation of the
condensate overflow switch (if equipped), the unit
and curb must be level.
If the unit is elevated, a field constructed catwalk around
the unit is strongly recommended to provide easy access
for unit maintenance and service.
Recommendations for installing the Supply Air and Return
Air ductwork joining the roof curb are included in the curb
instruction booklet. Curb ductwork must be fabricated and
installed by the installing contractor before the unit is set
into place.
Note: For sound consideration, cut only the holes in the
roof deck for the ductwork penetrations. Do not cut
out the entire roof deck within the curb perimeter.
If Curb Accessory Kit Not Used
• The ductwork can be attached directly to the
factory-provided flanges around the unit’s supply and
Figure 14. 6 to 10 tons high units—horizontal supply
and return air openings
Figure 15. 5 ton unit—downflow supply and return air
openings with through-the-base utilities
Figure 16. 6 to 10 tons units—downflow supply and return
air openings with through-the-base utilities
Supply
Return
THROUGH
THE BASE GAS
THROUGH
THE BASE
ELECTRICAL
SUPPLY
RETURN
TBU CONDENSATE
3 5/8”
9 2 MM
14”
356 MM
9 1/4”
235 MM
15 1/2”
3 9 4 MM
4”
102 MM
24”
610 MM
16”
406 MM
27 9 /16”
701 MM
4 3/16”
106 MM
4 9 /16”
116 MM
23 1/2”
5 9 7 MM
2 13/16”
71 MM
6 1/2”
165 MM 3 11/16”
9 4 MM
4 7/8”
124 MM
5 1/16”
128 MM
9 15/16”
253 MM
WARNING
Combustible Materials!
Maintain proper clearance between the unit heat
exchanger, vent surfaces and combustible materials.
Refer to unit nameplate and installation instructions for
proper clearances. Improper clearances could result in
combustible materials catching on fire. Failure to
maintain proper clearances could result in death or
serious injury or property damage.