Burnham ES2 manual Connect Gas Piping, Connect Boiler Water Piping

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 fire or explosion.

SIZE GAS PIPING, regulators, valves, and meters so as to provide an adequate

gas flow 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 flange onto the gas valve and pipe through the slot in the left jacket panel (Figure 5-a). In Canada, close

nipples and street ells are not approved for use as gas piping.

3.Pipe through the left jacket panel, and complete drip leg as shown (Figure 5-a).

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).

	RV
	O
S
R	G
	D
6-a

1.Apply sealant to all threads.

2.Screw the water supply manifold into the boiler outlet tapping “O.”

3.Orient the manifold with the relief valve on top.

4.Screw the relief valve into manifold tapping “RV”.

iThis installation is not complete until the relief valve is installed.

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 gage into manifold tapping “G”.

6.Connect the system supply to the open end of the manifold "S" using a 1¼” male NPT fitting.

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