85-03-01205
ML-SERIES FIREPLACE
Page
46
3.4.3
Gas Pressure Requirements and Checking
Two pressure taps for checking input and output gas pressures are located on the main gas valve. A qualified installer should
use this fitting for setting the correct gas pressure during initial installation.
The applianc e and its applianc e main gas
valve must be disc onne c te d fr om the gas
supply piping syste m dur ing any pr e ssur e
te sting of that syste m at te st pr e ssur e s in
e x c e ss of 1 /2 psi (3 .5 kPa).
The applianc e must be isolate d fr om the gas
supply piping syste m by c losing its e quipme nt
shut-off valve dur ing any pr e ssur e te sting of
the gas supply piping syste m at te st pr e ssur e s
e qual to or le ss than 1 /2 psi (3 .5 kPa).
3.4.4
Drip Leg Recommended
It is recommended that a drip leg/ sediment trap is
installed within the main gas supply line serving this
appliance.
Figure 3-29 Drip Leg/ Sediment Trap
3.4.5
Manual Gas Shutoff Valve Requirement
If local building codes require one, obtain an external keyed wall-mounted or
floor-mounted manual gas shutoff valve approved per local gas plumbing codes
and install per local gas plumbing codes in the specified location. Local
requirements supersede all other codes.
Figure 3-28 Main Gas Valve
Figure 3-30 Keyed Manual Gas Shutoff
Valve
