National Comfort Products CPG41838-U, Instruction Manual

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37
Gas Furnace
Furnace Support Leg
This leg is in place to help support the back end of the furnace and keep the secondary heat
exchanger pitched toward the collector box.
Internal Drain Tubing
There is a drain tube that is located between the flue connector and the top of the collector box.
This allows for any drainage that occurs in the flue to pitch back to the collector box.
Drain Outlet Tubing
There is a flexible drain tube that is connected to the outlet of the collector box. This tube has
a molded 90 degree elbow where it attached to the collector box. Be sure that this elbow is
pitched down. The opposite end of this tubing is to connect to a barbed 90 degree elbow. The
end of this tubing should be mounted down with provided clamps to eliminate and double
trapping or bellying of the drain outlet tube.