Weil-McLain B-66HE Spécifications télécharger pdf (Page 8)

Part number 644-500-065/02008

QB-180/300 Oil Burners Series 2 — Burner Manual

General

All installations must comply with national or local

codes and ordinances.

Oil line must be piped properly to

avoid risk of serious personal injury,

death or substantial property damage.

Follow these recommendations:

• When installing oil lines, use

continuous runs of heavy-wall

copper tubing.

• Be sure all connections are airtight.

Flared fittings are recommended.

Do not use compression fittings.

Do not use Teflon tape.

• Use an oil filter of adequate size for

all installations. Install filter inside

building between tank shutoff valve

and burner. For easy servicing,

locate shutoff valve and filter near

burner.

• Long or oversized inlet lines may

require the pump to operate dry

during initial bleeding period. In

such cases, assist priming by

injecting fuel oil into pump gearset.

• Never exceed 3 psi pressure to inlet

side of pump. Pressure over 3 psi

may damage shaft seal and allow it

to leak oil.

Solenoid valve

Solenoid valve supplied in nozzle line is a non-delay

valve and provides instant oil supply shutoff to nozzle.

Vacuum gauge

Vacuum gauge may be installed in either of the ¼" inlet

ports. Vacuum is total of all pressure drops in system

from tank to pump inlet.

Oil pump pressure

To check operating pressure, use gauge port or nozzle

Figure 5 Fuel pump — Typical

port. Do not use easy flow air bleed valve. It contains

higher pressure than operating pressure.

Setting pump pressure with gauge in easy flow air bleed

valve will result in wrong operating pressure.

Average cutoff pressure is 120 psig. Check cutoff

pressure by installing pressure gauge in nozzle port of

fuel pump. Run burner for short time. Shut off burner.

Gauge shows cutoff pressure.

Solenoid valve

Pressure gauge port 1/8" npt (read operating pressure)

Regulating pressure (behind inlet)

Easy flow air bleed valve

1/16" bypass plug — insert for

(use 5/32" allen wrench)

two-pipe systems ONLY

Inlet ¼" npt (2 locations)

Return ¼" npt

Nozzle port 1/8" npt (read operating pressure)

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Weil-McLain B-66HE Spécifications Page 8

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