International comfort products A Series Installation Instructions Manual page 17

Table 6 – Evaporator Coil Spacer or Shield Requirements.
Install Flush to
Type of Coil
Furnace
Furnace Manufacturer's
Allowed
N Coil
Furnace Manufacturer's
Not Allowed
A Coil
3rd Party Coil --- Factory
Allowed
Shielded (See Note 1)
3rd Party Coil ---
Not Allowed
Unshielded
NOTE:
1. 3rd Party Coils that are factory- -supplied with a metallic
shield over the plastic composite drain pan must completely
shield all plastic composite materials from direct exposure
to any part of the heat exchanger. Consult with 3
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 (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 (Fig. 25) and for the 8- -in. tall sheet metal spacer (Fig.
26).
3-- 3/4
Representative drawing only, some models may vary.
1-- 1/2
20--- 1/2
Furnace
Coil
Furnace
Representative drawing only, some models may vary.
Cabinet Size
17--- in.
21--- in.
Fig. 25 - - Dimensions Metal Shield
440 01 4601 01
Install with Install with
8--- in. Spacer Metal Shield
Not Required Not Required
Allowed
(Except 100k
BTU size in Allowed
Horizontal Right (See Note 2)
--- MUST use
shield)
Not Required Not Required
Allowed
(Except 100k
BTU size in Allowed
Horizontal Right (See Note 3)
--- MUST use
shield)
rd
Party
A ---COIL SHIELD
16-- 1/2
3-- 1/2
3-- 1/2
3-- 3/4
A+7.5
FRONT
A190295
A190296
Dimension "A"
10--- in.
13.5--- in.
Specifications subject to change without notice.
NOTE: The metal shield in the figure above is only recommended
for use with furnace manufacturer's A- -Coil and may not be
rd
compatible with 3 party coils. In the event the shield shown
above is incompatible with the desired coil, use a spacer or consult
rd
3 Party Manufacturer for recommended dimensions and design
of suitable shield.
Furnace
Coil
20--- 1/2"
Furnace
Representative drawing only, some models may vary.
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
(Table 6 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, Table 6).
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, Table 6),
and furnace to create an air tight seal using locally approved
materials.
Upflow Installation
NOTE: The furnace must be pitched for proper condensate
drainage (Fig. 29).
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.
8
"
Coil Spacer
B
A190301
Dimension "B"
17--- 1/2--- in.
21--- in.
17