Miller Electric MT-24VF-12-1 Specifications download pdf

Series WFE Uni-Match

Electric Water Feeder

• 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, install-

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

accordance with all applicable codes and ordinances.

• To prevent electrical shock, turn off the electrical power before making electrical connections.

• Boiler manufacturer schematics should always be followed. In the event that the boiler

manufacturer’s schematic does not exist, or is not available from the boiler manufacturer,

refer to the schematics provided in this document.

• To prevent water damage check to make sure there is adequate floor drainage capacity.

Check all components in the system to insure that they will not leak in the event of an

overfeed condition.

• After installation, check for proper operation of all of the limit and operating controls,

before leaving the site.

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

WARNING

FEED

INDICATOR

UAL

FEED

Uni-Match

Applications:

For use on boilers with mechanical (float type) or

electronic (probe type) LWCO's.

The Uni-Match

water feeder is available in either 24 or

120 volt and all models feature a manual feed button.

Field selectable dwell/feed cycles allow condensate to

return to the boiler before feeding, lessening the chance

the boiler will be overfed or flood.

McDonnell & Miller

Installation & Maintenance

Instructions

MM-323

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - McDonnell & Miller

Series WFE Uni-Match®Electric Water Feeder• Before using this product, read and understand instructions.• Save these instructions for future reference

Page 2 - SPECIFICATIONS

PowerModel Voltage** Consumption*WFE-24 24VAC 15VAWFE-120 120VAC 20VAWATER FEEDERINLETVALVEOUTLETVALVEUNIONUNIONSTRAINERCITYWATER SUPPLYCHECKVALVEBYPA

Page 3 - Terminal Connections

3Boiler manufacturer schematics should be followed. Inthe event that the boiler manufacturer's schematic doesnot exist, or is not available from

Page 4 - Wiring Diagram Legends

4Wiring Diagram Legends1. Bold lines indicate action to be taken in Step shown.2. Grey lines indicate existing wiring.PS-802-24LWCOHNBUNI-MATCHWATER F

Page 5 - 21P1 P2 A

5WNHMILLIVOLTBURNERCIRCUIT1234NEUTRALHOT120VUNI-MATCHWATER FEEDERWFE-120SERIES 67LOW WATERCUT-OFF• Install wire from 120 volt circuit 'Neutral&ap

Page 6 - Diagram 15

6UNI-MATCHWATER FEEDERWFE-12021P1 P2 ABURNERLOWLIMITTHERMOSTATWNHFactoryJumperBarHYDROLEVEL CGT450• Connect wire from terminal 'N' of water

Page 7 - STEP 3 - Testing

7STEP 3 - Testinga. Open the inlet valve (X) and the outlet valve (Y). Check for any leakage.If there are any leaky connections, close the inlet and o

Page 8

MAINTENANCESCHEDULE:• Inspect the water feeder annually. Replace it if it is worn, corroded, or if components no longer operate properly.• Replace the