WATER FEEDER
INLET
VALVE
OUTLET
VALVE
UNION
UNION
STRAINER
CITY
WATER SUPPLY
CHECK
VALVE
BYPASS
VALVE
UNION
BYPASS
CONNECT TO
RETURN HEADER
ON BOILER
3
FEED
INDICATOR
MANUAL
FEED
UNIVERSAL WATERFEEDER
U
NI-
M
ATCH
McDonnell & Miller
Chicago, IL U.S.A.
A
1. Check the product data plate (A) to make
sure that the correct model water feeder
(120V or 24V) was selected for installation
with the boiler low water cut-off.
3a. Control must be installed within eyesight
of boiler.
b. Clearance must be provided on all sides
to 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 the
inlet and outlet piping for easier trouble-
shooting and repair/replacement.
f. Install manual fill valve and bypass line for
removal while the boiler is in service.
2. Uni-Match water feeders are shipped from the
factory equipped for a 2 gpm feed rate. A separate
kit with instruction sheet and field installable orifices
for 1 gpm and 4 gpm feed rates is included. If the
alternate feed rates are required, refer to the
instruction sheet provided with the kit for orifice
replacement.
1 GPM
Orifice
4 GPM
Orifice
STEP 1 - Installation
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