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47Part number 550-141-850/0699
• Installation • Start-Up • Parts • Maintenance
Figure 21 Carefully connect manometer to gas valve as shown, following instructions on opposite page.
At Least
6 Inches
Manifold
Cap on adjustment tower
Gas control
vent tap
Gas control outlet
pressure tap —
Remove allen screw from
gas control
and install hose barb
as shown.
outlet pressure
tap
Gas control outlet
pressure tap —
Remove allen screw from
gas control
and install hose barb
as shown.
outlet pressure
tap
Add tee
hose
fitting as
shown
Existing hose
to gas control vent
tap hose barb —
Remove from
gas control vent
tap and connect
to end of tee
as shown
Gas outlet
piping
85026
Add hose from gas
control vent tap to
tee hose fitting
+
-
White-Rodgers
Model 36E66-302
Gas control
vent tap
Robertshaw
Model
7200DERN-680