Xylem MM 704B No. 2 Switch For series 47, 247, 63, 51, a Bedienungsanleitung PDF herunterladen

INSTRUCTION MANUAL

MM-704B

a. Remove the four (4) screws that secure the

cover plate (A) or the existing switch.

b. Mount the new switch on top of the control (B)

using the (4) screws.

The No. 2 switch can be positioned with the conduit

opening facing toward or away from the float chamber.

These are the only positions in which the switch will

function properly. See drawing at right.

SCHEMATIC OF SWITCH OPERATION

Water Level

Normal

Burner On

Alarm Off

Low

Water

Alarm

Terminals

Low Water

Cut-Off

Terminals

N.O.

N.C.

Water Level

Low

Burner Off

Alarm On

N.O.

N.C.

The No. 2 Switch will help to maintain a minimum

water level in the boiler during normal operation.

The switch will shut off the burner in the event the

boiler water level falls. Once the water level is

restored to its normal level, the switch will allow

the burner to operate.

INSTALLATION –

TOOLS NEEDED:

One (1) flathead screwdriver and one (1) 5/16” socket wrench.

STEP 1 - Switch Installation

No. 2 Switch

• Before using this product read and understand instructions.

• Save these instructions for future reference.

• All work must be performed by qualified personnel trained in the proper application, instal-

lation, and maintenance of plumbing, steam, and electrical equipment and/or systems in

accordance with all applicable codes and ordinances.

• To prevent a fire, do not use this low water cut-off to switch currents over 10.2A, 1/2 Hp at

120 VAC or 5.1A, 1/2 Hp at 240 VAC, unless a starter or relay is used in conjunction with it.

Failure to follow this warning could cause property damage, personal injury or death.

WARNING

CAUTION

WARNING

OPERATION

Electrical Ratings

Motor Switch Rating (Amperes)

Voltage Full Load Locked Rotor Pilot Duty

120 VAC 10.2 61.2

125 VA at

240 VAC 5.1 30.6

120 or 240 VAC

No. 2 Switch

Applications:

For series 47, 247, 63, 51, and 53 water

feeders to add the low water cut-off

function.

1 2 3 4

Inhaltsverzeichnis

Seite 1 - No. 2 Switch

INSTRUCTION MANUAL MM-704B2BORAa. Remove the four (4) screws that secure the cover plate (A) or the existing switch.b. Mount the new switch on top of

Seite 2 - McDonnell & Miller

2BORAa. Remove the four (4) screws that secure the cover plate (A) or the existing switch.b. Mount the new switch on top of the control (B) using the

Seite 3

MAINTENANCE:• Replace the switch every 10 years or when the components do not operate properly. More frequent replacement may be required when severe

Seite 4 - INSTALLATION COMPLETE

Xylem Inc. 8200 N. Austin Avenue Morton Grove, Illinois 60053 Phone: (847) 966-3700 Fax: (847) 965-8379www.xyleminc.com/brands/mcdonnellmillerMcDonnel

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Xylem MM 704B No. 2 Switch For series 47, 247, 63, 51, a Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Pumpen Xylem MM 704B No. 2 Switch For series 47, 247, 63, 51, a herunter. Xylem MM 704B No. 2 Switch For series 47, 247, 63, 51, and 53 water feeders to add the low water cut-off function User Manual Benutzerhandbuch

Inhaltsverzeichnis

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