8
The boiler is equipped with a combination gas
control. Install a ground joint union ahead of the gas
control assembly to permit servicing of the control.
See Figure 3. Install an additional shut-off valve
when a combination gas control is used. See Figure
3 for the suggested location.
! NOTE:
WHEN INSTALLING THE BOILER, MAKE
SURE A PIPE COMPOUND RESISTANT TO THE
ACTION OF LIQUEFIED PETROLEUM IS USED.
Check piping for leaks. Always check leaks with
a water and soap solution, or equal. DO NOT USE
A FLAME FOR CHECKING GAS LEAKS.
The boiler and its individual shut-off valve must
be disconnected from the gas supply piping during
any pressure testing of that piping at test pressures
in excess of 0.5 PSIG, or 14 inches water column.
The boiler must be isolated from the gas supply piping by closing its individual manual shut-off valve
during pressure testing of the gas supply piping system at test pressures equal to or less than 0.5 PSIG.
Figure 3 Gas Piping
SHUT OFF
BALL VALVE
* Venting - Refer to Section VI BOILER PIPING
** Relief Valve discharge and drain valve piping should be piped to a safe place of discharge.
CWL-GS Boiler Piping
Figure 4
DOMESTIC WATER RELIEF VALVE
TEMPERING
VALVE
