Page 28
SECTION IV: INSTALLATION (cont .)
GAS CONNECTIONS (cont.)
Figure 16: Gas Piping to Valve/Control
Cold Water
Supply
Backflow
Preventer (optional)
Expansion Tank
T&P Relief
Valve
Relief Valve
Discharge Line
to Floor Drain
(Min. 6" air gap
from floor drain)
Drain Valve
Control / Gas Valve
Heat Trap (6" min)
Union
Shut-off Valve
Blower Assembly
Exhaust Vent*
* Slope downward and away from water heater
1/8 inch per foot (max.) for horizontal venting.
Combustion Air
Intake*
Shut-Off
Valve
Union
Heat Trap
(6" min)
Hot Water
Outlet to Mixing
Valve (not shown)
Condensate Drain Kit
(make Ø 6" loop,
prime with water seal)
Anode (1 of 2)
See Figure 16
for details
To Floor Drain
or Neutralizer
Gas Backup
Temperature
Sensor/ECO
Solar Sensor
Immersion Well
From Solar Collector
To Solar Collector
Figure 17: Recommended Water, Gas, Vent Connections
