from thermal expansion such as pressure bulges and/or deformities.Your water supplier or local plumbing inspector should be contacted on how to control this situation.
3.After installation of the water lines, open the main water supply valve and fill the water heater. While the water heater is filling, open several hot water faucets to allow air to escape from the water system. When a steady stream of water flows through the faucets, close them and check all water connections for possible leaks.
4.Never operate the water heater without first being certain it is filled with water.
SCALDING
This water heater can deliver scalding temperature water at any faucet in the system. Be careful whenever using hot water to avoid scalding injury. Certain appliances such as dishwashers and automatic clothes washers may require increased temperature water. By setting the thermostat on this water heater to obtain the increased temperature water required by these appliances, you may create the potential for scald injury. To protect against injury, you should install ASSE approved mixing valve in the water system. This valve will reduce point of discharge temperature by mixing cold and hot water in branch supply lines. Such valves are available from the local plumbing supplier.
Table 1
Approximate Time/Temperature Scald Chart
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120° F | More than 5 minutes | |
125° F | 1½ to 2 minutes | |
130° F | About 30 seconds | |
135° F | About 10 seconds | |
140° F | Less than 5 | seconds |
145° F | Less than 3 | seconds |
150° F | About 1½ seconds | |
|
| |
155° F | About 1 second | |
ALTERNATE SPACE HEATING WATER CONNECTIONS
DANGER
Toxic chemical, such as those used for boiler treatment, shall not be introduced into potable water used for space heating.
This water heater shall not be connected to an existing heating system or component(s) previously used with a
All piping components connected to this water heater for space heating applications must be suitable for use with potable water.
Figure 7 | Scald Warning |
The following chart details the relationship of water temperature and time with regard to scald injuy and may be used as a guide in determining the safest water temperature for your applications.
WARNING
When the system requires water for space heating at temperatures higher than required for other means, a tempering valve shall be installed to temper the water for those uses in order to reduce the scald hazard potential.
Failure to properly pipe this water heater may result in improper operation and damage to the water heater or structure.
Oxygen contamination of this water heater will cause corrosion of iron and steel components, and can lead to water heater failure.
Connect the system supply and return piping to the water heater.
Refer to Figure 8 and Figure 9 for installation examples. Maintain a minimum ½” clearance from hot water piping to combustible materials.
Figure 8 |
Alternate Space Heating Connections |
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