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ICE CFA1012A I&O Manual 01/2021 New
system must be engineered to ensure sufficient air flow through the unit to prevent over-heating of the
heater element. This includes proper supply duct sizing, sufficient quantity of supply registers, adequate
return and filter area. Ductwork must be of correct material and must be properly insulated. Ductwork
must be firmly attached, secured and sealed to prevent air leakage. Do not use duct liner on inside of
supply duct within 4 feet of the unit.
Galvanized metal duct extensions should be used to simplify connections to duct work and grilles. Use
fabric boots to prevent the transmission of vibration through the duct system. The fabric must be U.L.
rated (UL-181) to a minimum of 197°F.
2.6 Bottom Bracket Installation
Wall Openings
Measure the dimensions of the supply and return ports on the CFA1012A.
Cut openings in the enclosure wall for the supply and return ducts. Make the supply openings one inch
larger than the duct flanges on the unit. The one inch clearance must be maintained on all sides of the
supply duct to combustible material for the first three feet of the duct.
1. Remove and discard the shipping crate attached to the unit.
2. The CFA1012A is shipped with the bottom brackets easily removed.
3. Refer to Figure 4. Attach the bottom support bracket to the wall using appropriate hardware.
Figure 4. Wall Mounting Detail
