Installation instructions
3.6.3Condensate drain tube requirements
Exhaust collar condensate drain installation (supplied with heater)
BThe condensate drain tube kit must be used for all installation types. Failure to properly install condensate drain will void the warranty.
BWhen installing the condensate drain tube kit on the exhaust collar (see diagram below), be sure to form a trap by means of a 3" (76.2 mm) loop partially filled with water. This loop must be as low as possible to allow proper drainage of condensate. The supplied tube is 3/8" ID high temperature silicone and must be attached to the condensate port on the exhaust collar with its supplied gear clamp (first remove brass screw from port).
BTo increase tube length, connect vinyl tubing (not supplied with heater) to the supplied tube. Do not reduce tubing diameter when using connector or additional tubing.
BThe condensate must be disposed of according to local regulations.
Condensate port on exhaust collar
1.Remove brass hex head screw
2. Fit tube with gear clamp
3.Loop size and location. Coil tube into 3” loop with nylon tie (don't crimp tubing) and fill bottom of loop with water
Fig. 12 Exhaust collar condensate drain installation
Note: No part of supplied silicone tube should be installed above condensate tapping or improper drain- age may occur. (see Fig. 12).
External condensate drain installation (not supplied)
An additional external condensate drain must be installed under the following conditions:
•Vertical terminating vent installations
•Horizontal terminating vent installations where the total vent length is greater than 5 feet
•Vent installation where any section of the exhaust vent pipe passes through an unconditioned space.
Note: Condensate must be disposed of according to local codes.
Note: Do not install condensate drain in areas where it may freeze.
1.Install condensate drain as close to heater as possible.
2.Use 3/8" ID high temperature silicone tubing to connect to condensate drain port. Do not use copper piping for any portion of the condensate drain.
3.Form a condensate trap by means of a 3" loop and fill bottom of loop with water.
4.To increase the tube length, connect to end of the high temperature silicone tubing with vinyl tubing, PVC or CPVC pipe. Do not reduce the internal diameter at any point.
5.Dispose of condensate according to local codes.
Fig. 13 Required condensate drain installation (Combustion air piping not shown)
3.6.4Room sealed installation (Twin pipe)
Warning: In areas where outdoor temperatures commonly fall below 36°F, a twin pipe venting system is required. Failure to do so may result in cold outside air being drawn across the heat exchanger causing it to freeze and burst. This failure is not covered under the manufacturer's warranty.
BAlthough it is permitted to draw combustion air from inside the structure in warm climates, the recom- mended method is to provide combustion air through
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