Freeze Protection Piping
Vacuum
Breaker
Water Heater
3/4" Gas Connection
NOTE:
Heat trace ALL water pipe and fittings located outside home (attic, crawl space) or building structure. (ALL water pipe and fittings shown above the dashed line in the drawing.)
Gas Supply
NOTE:
ALL pipe and fittings shown below dashed line should be located inside home or building structure.
The vacuum breaker line should be located inside the building structure.
Minimum 3/4" Hot Water
Supply Line
1/2" Minimum
Normally Open
Solenoid Valve
S
3/4" Minimum
Normally Closed
Solenoid Valve
S
Route to Floor Drain
Minimum 3/4"
Cold Water
Supply Line
| 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 and configuration of the particular system being installed. This drawing does not imply compliance with local building code requirements. It is the responsibility of the contractor/engineer to ensure installation is in accordance with all local building codes. Confer with local building officials before installation.
18 | 305, 505, 705 Indoor Manual |