HearthStone 8521 - Page 14

Hearthstone Quality Home Heating Products , Inc. ODEL 8521 Sterling “G” B-Vent
10
as listed in the Specifications. The manifold
pressure is tested by connecting the manometer to
the manifold pressure tap on the gas control valve
(Figure 7).
This appliance and its individual shutoff valve
must be disconnected from the gas supply piping
system during any pressure testing of that system at
test pressures in excess of ½" psig. The Sterling
must be isolated from the gas supply piping system
by closing its individual manual shutoff valve during
any pressure testing of the gas supply piping system
at test pressures equal to or less than ½" psig.
3" MIN.
Ca p
Nipp le
To Equipment
Inlet
Tee Fitting
Gas Supply
Inlet
Sediment Trap