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935SB: Installation, Start-up, Operating and Service Maintenance Instructions
composite materials from direct exposure to any part of the heat
exchanger. Consult with 3rd Party Manufacturer to ensure coil is
properly shielded. Coils that are only partially shielded should be
treated as un-shielded and require a spacer.
2. Field-fabricated metallic shield must completely shield all plastic
composite materials from direct exposure to any part of the heat
exchanger. Coils that are only partially shielded should be treated as
un-shielded and require a spacer. Dimensional requirements (see
Fig.
26).
3. For 3rd party unshielded coils, consult manufacturer for design of a
field-fabricated shield that completely shields all plastic composite
materials from direct exposure to any part of the heat exchanger.
All adapters are field fabricated according to the dimensions for the
metal shield (see
Fig.
25) and for the 8-in. tall sheet metal spacer (see
Fig.
26).
Cabinet Size
17-in.
21-in.
Fig. 25 – Dimensions Metal Shield
NOTE: The metal shield in the figure above is only recommended for
use with furnace manufacturer's A-Coil and may not be compatible with
3rd party coils. In the event the shield shown above is incompatible with
the desired coil, use a spacer or consult 3rd Party Manufacturer for
recommended dimensions and design of suitable shield.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
A190295
A190296
Dimension "A"
10-in.
13.5-in.
17
Cabinet Size
17-in.
21-in.
Fig. 26 – Dimensions of 8-in. Tall Metal Spacer
NOTE: The allowable use of the 8-in. spacer demonstration
and
Fig.
26). The spacer may taper to accommodate different
coil/furnace width combinations but must always keep an 8-in.
minimum height if used. Space between the top of the furnace casing
and the bottom of the coil.
NOTE: When the indoor coil is placed in an unconditioned space,
insulation should be applied and wrapped around the outside of coil
casing, 8-in. adapter and supply duct contact point.
1. Create field fabricated adapter (if needed,
2. If adapter is needed, place field fabricated adapter on furnace.
Adapter should be tapered to fit coil/furnace combination when one
of them is larger than the other.
3. Set coil on adapter.
4. Ensure coil is level for proper condensate drainage. In upflow
application, do not tip coil toward condensate drain. In the
horizontal application, ensure coil cabinet is level side to side and
front to back. It is allowable to add up to 1/2-in additional slope
over length and depth of coil cabinet in the direction of drain pan
connection.
5. Attach coil casing to furnace using sheet metal screws. If 8-in.
spacer is required, attach coil casing to spacer and attach spacer to
furnace using sheet metal screws.
6. Seal joints between coil casing, adapter (if needed,
furnace to create an air tight seal using locally approved materials.
Upflow Installation
NOTE: The furnace must be pitched for proper condensate drainage
(see
Fig.
31).
Supply Air Connections
For a furnace not equipped with a cooling coil, the outlet duct shall be
provided with a removable access panel. This opening shall be
accessible when the furnace is installed and shall be of such a size that
the heat exchanger can be viewed for possible openings using light
assistance or a probe can be inserted for sampling the air stream. The
cover attachment shall prevent leaks.
A190301
Dimension "B"
17-1/2-in.
21-in.
(Table 7
Table
7).
Table
7), and
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