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Remove the shipping bracket spanning the A-Coil apex to the rear of the wrapper on all models prior to installation.
•
The bottom duct flange for the supply plenum side is shipped unattached. Carefully insert the flange into bottom rail
and use a 5/16" screw to attach at the middle of the flange.
•
Attach coil to the furnace using hardware and brackets provided. (see Figure 3)
•
Attach plenum to coil. (see Figure 3)
•
Use tape or mastic to seal between coil and furnace, and also between coil and plenum.
FIGURE 3
(Installation of Furnace, Coil, and Plenum)
FRONT BRACKET
ACCESSORY
Condensate Drain Piping - When coils are installed above ceilings, or in other locations where damage from condensate
overflow may occur, it is MANDATORY to install a field fabricated auxiliary drain pan under the coil cabinet enclosure. Drain
lines from the auxiliary pan must be installed and terminated so that the homeowner can see water discharges. A primary
condensate drain connection is located in the drain pan on the bottom of the coil / enclosure assembly. The female (3/4 fpt)
threaded fitting that protrudes outside of the enclosure is used for external connection.
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Ensure drainpan hole is NOT obstructed.
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To prevent potential sweating and dripping on to finished space, it may be necessary to insulate the condensate
drain line located inside the building. Use Armaflex® or similar material.
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A Secondary Condensate
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The drain lines are to be pitched 1/4" per foot to provide free drainage. Insulate drain lines to prevent sweating.
Trapped lines are required by many local codes. In absence of any prevailing local codes, reference requirement
from the Uniform Mechanical Building Code.
NOTE: If secondary drain is not installed, the secondary access must be plugged.
•
FIGURE 4
(Drain Piping Installation)
FURNACE
TOP & BACK
BRACKET
ACCESSORY
COIL
PLENUM
Drain Connection, now called for by many building codes, has been provided.
Air Handler
POSITIVE LIQUID SEAL REQUIRED
AT TRAP
FRONT BRACKET
ACCESSORY
Drain
Connection
2" MIN.
2
FURNACE
TOP & BACK
BRACKET
ACCESSORY
(Z-BRACKET WITH NARROW FURNACE)
COIL
PLENUM
3" MIN.
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