Installation Instructions
FREEZE PROTECTION
FOR EXTERNAL PIPING
IMPORTANT!
With electrical power supplied to the water heater, it will not freeze in environments as cold as
In the event of a power failure at temperatures below freezing, the water heater should be drained of all water to prevent freezing damage.
The unit may be drained manually, or through the installation of the optional solenoid valves as shown.
The unit may be drained manually; however, we highly recommend that
When the electrical power to the water heater fails, the 3/4″ solenoid valve closes (stopping the flow of water into the heater) and the 1/4″ solenoid valve opens (allowing the water heater and associated piping to drain). Ensure that you run the drain for the solenoids to the outside environment to prevent discharging water inside the building, which can cause water damage.
NOTE: If the unit is installed in an environment that can freeze, follow state and local codes and apply heat trace to ALL water pipes and fittings located outside (attic, crawl space or building structure).
| KEY |
3/4″ Ball Valve | Pressure Regulator |
3/4″ Union | Circulating Pump |
Check Valve | Boiler Drain Valve |
Pressure Relief Valve | S Solenoid Valve |
This is not an engineered drawing; it is intended only as a guide and not as a replacement for professionally engineered project drawings. This drawing is not intended to describe a complete system; it is up to the contractor/engineer to determine the necessary components for and configuration of the particular system being installed. The drawing does not imply compliance with local building code requirements; it is the engineer‘s/contractor’s responsibility to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation.
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