Install Instructions

12
5. CONNECT GAS PIPING
Size gas piping according to Appendix C – Gas
Piping
SHUT OFF GAS SUPPLY before
servicing the boiler.
ALL GAS PIPING MUST BE GAS
TIGHT. Use gas rated thread compound
on all threaded joints to avoid leaks, which may
result in re or explosion.
SIZE GAS PIPING, regulators, valves,
and meters so as to provide an adequate
gas ow and pressure to the boiler during
operation. Failure to do so may cause poor
combustion, noise, injury, or death.
1. Remove boiler door, locate gas valve and
remove plastic shipping plug.
2. Thread a ¾" x 1½" nipple, a 90° street
elbow, or a Honeywell ange onto the gas
valve and pipe through the slot in the left
jacket panel (Figure 5-a).
3. Pipe from the street elbow through the
left jacket panel, and complete drip leg as
shown (Figure 5-a).
6. CONNECT BOILER WATER PIPING
General system piping guidelines are included in
Appendix D—System Piping.
Additionally, for this particular boiler install piping
shown below (Figure 6-a).
6-a
5-a
1. Apply sealant to all threads.
2. Screw water manifold into boiler outlet
tapping “O.”
3. Orient water manifold with safety relief valve
tapping "RV" on top.
4. Screw safety relief valve into water manifold
tapping “RV”. Safety relief valve must be
installed with spindle in vertical position.
PIPE THE RELIEF VALVE DISCHARGE
to a location where it will not harm
people or damage property. The relief valve may
discharge scalding hot water or steam.
BLOCKING THE RELIEF VALVE may
result in boiler explosion.
5. Screw the temperature-pressure gauge into
water manifold tapping “G”.
RV
S
R
O
G
D