IMPORTANT!
With electrical power supplied to a
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 electrical connections for the two solenoid valves should be tied to the 120 V power terminals provided on the PC Board of the water heater.
When the electrical power to the water heater fails, the cold water supply
drain down solenoid valve opens, allowing the water heater and associated piping to drain. Ensure that you run the drain for the solenoids per local codes.
| |
Equipment List | QTY |
Outdoor | 1 |
Water Heater |
|
Vacuum
Breaker
Outdoor
Water Heater
NOTE:
enclosure or recess box and packed with insulation for additional protection.
NOTE:
outside building structure. These are indicated by being above the dashed line.
line should be located inside the building structure.
The vacuum breaker line should be located inside the building structure.
Minimum 3/4" Hot Water
Supply Line
1/4" Minimum
Normally Open
Solenoid Valve
S
3/4" Minimum
Normally Closed
Solenoid Valve
S
Route drain per local codes
Gas Supply Line
Minimum 3/4 " C old W ater
S upply Line
Domestic Hot Water - Optional Freeze Protection
1 Outdoor
Preferred Piping Installation
Key
3/4" Ball Valve
3/4" Union
Check Valve
Pressure Relief Valve
Pressure Regulator
Circulating Pump
S
Boiler Drain Valve
Solenoid Valve | Mixing Valve |
NOTE: This drawing is not intended to describe a complete system and is not a replacement for a pro- fessional engineering drawing. It is intended only as a guide and does not imply compliance with local building code requirements. Confer with local building officials before installation. The Contractor or engineer is to determine the necessary components and configuration of the particular system to be in- stalled. It is the responsibility of the engineer or contractor to ensure that the installation is in accordance with all local building codes.
Drawing Date:
September 07, 2008
Drawing Number:
20
