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Table of Contents
Replacement Switch Assembly
5
Burner/Pump Control
5-M
Burner/Pump Control – Manual Reset
7B
Proportional Control
7B-M
Proportional Control – Manual Reset
For Series:
93
94
193
194
Pump Controller/Low Water Cut-Off
Electrical Ratings
Models with 5 and 5-M Switch
Pump and Burner Switch Contact Ratings
Voltage
Pilot Duty Only
120 VAC
345 VA
240 VAC
•
•
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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, installation, 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 exceed the switch contact rating.
Failure to follow this warning could cause property damage, personal injury or
death.
Models with 7B and 7B-M Switch
Burner
120 VAC
240 VAC
!
WARNING
INSTRUCTION MANUAL
Replacement Switch
Switch Ratings
Valve
345 VA
0 - 135 ohms @ 24 VAC
MM-706B
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Table of Contents
Related Manuals for Xylem McDonnell & Miller MM-706B
Summary of Contents for Xylem McDonnell & Miller MM-706B
- Page 1 INSTRUCTION MANUAL MM-706B Replacement Switch Assembly Burner/Pump Control Burner/Pump Control – Manual Reset Proportional Control 7B-M Proportional Control – Manual Reset For Series: Pump Controller/Low Water Cut-Off Replacement Switch Electrical Ratings Models with 7B and 7B-M Switch Models with 5 and 5-M Switch Switch Ratings Pump and Burner Switch Contact Ratings Voltage...
- Page 2 STEP 1 - Removal and Replacement of Contacts and Terminal Panels a. Turn power off to boiler and all controls. Allow boiler to cool to 80˚F (27˚C) and reduce the pressure to 0 psi (0 bar). CAUTION There may be more than one source of power to the boiler.
- Page 3 STEP 2 - Testing – Dimensions shown are typical. – The following testing procedure is only meant to serve as a verification of proper operating sequence. a. Turn on power to boiler and pump circuits. With the boiler empty, the pump should turn on (5 or 5-M switch models) or the valve open (7B or 7B-M switch models).
- Page 4 Xylem Inc. 8200 N. Austin Avenue Morton Grove, Illinois 60053 Phone: (847) 966-3700 Fax: (847) 965-8379 www.xyleminc.com/brands/mcdonnellmiller McDonnell & Miller is a trademark of Xylem Inc. or one of its subsidiaries. © 2012 Xylem Inc. MM-706B November 2012 Part No. 210418...
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