the bottom of the unit (see figure 12). Condensate from this water heater is mildly acidic. Please note that some local codes require that condensate is treated by using a pH neutralizing filter prior to disposal.
Caution must be used to ensure that the drain is free and clear of debris and will not allow backflow through the condensate hose. Consideration must be given to avoid freezing of the condensate lines which could result in excessive build up of condensate inside the water heater. Waterproof heat tape may be required to prevent freezing of the condensate lines. Please ensure that the outlet of the condensate drain does not create a slippery condition which could lead to personal injury.
CONDENSATION WARNING: THIS WATER HEATER IS A CONDENSING UNIT AND REQUIRES A DRAIN TO BE LOCATED IN CLOSE PROXIMITY TO ALLOW CONDENSATE TO DRAIN SAFELY. THE CONDENSATE DRAINS FROM UNIT AT THE EXHAUST ELBOW LOCATED AT BOTTOM OF UNIT. NOTE: IT IS IMPORTANT THAT THE CONDENSATE HOSE NOT BE ELEVATED ABOVE THE EXHAUST ELBOW, SEE FIGURE 12. CONDENSATE
Figure 12.
The condensate drain line must be routed to a suitable drain. If no floor drain is available or the drain is above the level of the condensate line, install a condensate pump that is resistant to the acidic condensate. These pumps are available from local distributors. If the pump is not resistant to acidic water, a condensate neutralizer must be used ahead of the pump. When installing the drain line, note the following:
•Plastic pipe or tubing must be used to connect the condensate drain to a suitable drain or condensate pump. Do not use copper tubing, iron, or steel pipe for the condensate drain line.
•Condensate drain lines should be installed in conditioned areas only. Drain lines installed in areas that are subject to freezing temperatures should be wrapped with a nationally recognized/listed heat tape and/or approved insulation for freeze protection. Install per manufacturer’s instructions.
•Do not common drain with the temperature and pressure relief valve or the condensate line from an air conditioner evaporator coil.
•Slope the condensate drain toward the inside floor drain or condensate pump.
•The condensate drain line and connection to the drain piping must comply with all local codes.
High Altitude Installations
This high efficiency water heater is certified for use without modification for an altitude of 10,000 feet (3,079 meters). Consult the factory for installation at altitudes over 10,100 feet (3,079m).
Some gas utility companies derate their gas for altitude, making it unnecessary to install high altitude orifices. Call the local gas or utility company to verify BTU content.
Due to the input ration reduction at high altitudes, the output rating of the appliance is also reduced and should be compensated for in the sizing of the equipment for applications.
Filling the Water Heater
Never use this water heater unless it is completely full of water. To prevent damage to the tank, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” gas to the water heater.
To fill the water heater with water:
1.Close the water heater drain valve by turning the handle to the right (clockwise). The drain valve is on the lower front of the water heater.
2.Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open when the water heater is in use.
3.To insure complete filling of the tank, allow air to exit by opening the nearest hot water faucet. Allow water to run until a constant flow is obtained. This will let air out of the water heater and the piping.
4.Check all water piping and connections for leaks. Repair as needed.
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