Xylem McDonnell & Miller Uni-Match WF2 Series Instruction Manual Download Page 4

4

Cover Removal & Replacement

Terminal Connections

N

P

M

For all wire connections to the terminal block (M).

1. Strip about 1/3" (8.5 mm) of insulation from

the wire.

2. Loosen the terminal screw (N) but DO NOT 

REMOVE. Move the wire clamping plate (P) back 
until the plate touches the back side of the screw 
head.

3. Insert the stripped end of the wire under the wire 

clamping plate (P) and securely tighten the 
terminal screw (N).

STEP 2 - Electrical Installation

To prevent electrical shock, turn off the electrical

power before making electrical connections.

Failure to follow this warning could cause property

damage, personal injury or death.

WARNING

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.

IMPORTANT

E

To Remove Cover
Using a flat head screwdriver, loosen (do not remove) the
two (2) screws that secure the water feeder housing (E)
and remove cover.

To Replace Cover
Place cover on the control housing and tighten cover
screws to approximately 2 ft•lb (2.6 N•m).

Summary of Contents for McDonnell & Miller Uni-Match WF2 Series

Page 1: ...n 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 co...

Page 2: ...h initiates a dwell period specific to the position of the switch If the return conden sate satisfies the low water cut off LWCO during the dwell period no water will be added to the boiler Once the d...

Page 3: ...o service control c Unit must be installed in a horizontal pipe in an upright position d Arrow on feeder must point in the direction of flow into the boiler e Install isolation valves and unions on th...

Page 4: ...ical shock turn off the electrical power before making electrical connections Failure to follow this warning could cause property damage personal injury or death WARNING Boiler manufacturer schematics...

Page 5: ...24 Hydrolevel 400 10 9 WF2 U 24 Hydrolevel CG400 11 9 WF2 U 120 Hydrolevel 450 12 9 WF2 U 120 Hydrolevel CG450 13 10 WF2 U 120 Hydrolevel CGT450 14 10 WF2 U 24 Honeywell LWCO 24 volt 15 10 WF2 U 120...

Page 6: ...1 2 3 4 5 Connect wire from terminal N of water feeder to terminal 2 on LWCO Connect wire from terminal H of water feeder to terminal 1 on LWCO Connect wire from terminal W of water feeder to terminal...

Page 7: ...on LWCO Connect jumper wire connecting terminals 2 and 3 of LWCO Connect wire from terminal W of water feeder to terminal 4 on LWCO Diagram 5 WF2 U 120 67 with 120 volt burner circuit W N H BURNER 24V...

Page 8: ...inal H on water feeder and terminal 3 on low water cut off Install wire from terminal W on the water feeder to terminal 4 on the low water cut off Diagram 8 WF2 U 120 67 with millivolt burner circuit...

Page 9: ...Factory Jumper Bar BURNER Connect wire from terminal N of water feeder to terminal 2 on LWCO Connect wire from terminal H of water feeder to terminal 1 on LWCO Connect wire from terminal W of water f...

Page 10: ...CGT450 Connect wire from terminal N of water feeder to terminal 2 on LWCO Connect wire from terminal H of water feeder to terminal 1 on LWCO Connect wire from terminal W of water feeder to terminal A...

Page 11: ...tory Installed Jumper Wire UNI MATCH WATER FEEDER MODEL WF U 120 Connect wire from terminal N of water feeder to terminal N on LWCO Connect wire from terminal H of water feeder to terminal L on LWCO C...

Page 12: ...Turn the boiler s electric power on and fill it to the manufacturer s recommended normal water level by depressing the red manual feed button Z on the water feeder X Y FEED INDICATOR MANUAL FEED U N I...

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