Xylem MM 309F User Manual
!
Replacement Cartridge and
Strainer Kit
For Series:
47, 51, 101-A
247, 551S,
847, 851,
INSTRUCTION MANUAL
MM-309F
Water Feeders with Hex Port Valves
CAUTION
WARNING
• Before using this product read and understand instructions.
Cartridge
Strainer Assembly
WARNING
• 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.
Failure to follow this warning could cause property damage, personal injury or death.
E
D
C
B
H
x 4
2
OFF
ON
a. Turn off the power to the boiler.
STEP 1 - Preparation
INSTALLATION –
TOOLS NEEDED:
One (1) 13/16" (21mm) socket wrench and one (1)
1/2" (13mm) wrench.
A
A
b. Allow the boiler to cool to 80˚F (27˚C) and
close the two (2) gate valves (A) in the
system piping.
a. Using the 1/2" (13mm) wrench, unscrew
and remove the four (4) hex-head
screws (B) that secure the strainer.
Discard the strainer (H) and the
gasket (C).
b. Using a 13/16" (21mm) socket wrench,
unscrew the old cartridge (D) from the
valve body (E) and discard it.
NOTE: The cartridge (D) will either be
black (Series 101-A, 47, 247 and 847)
or gray (Series 51, 851 and 551-S) and
should be replaced with a similarly
colored replacement cartridge.
STEP 2 - Remove the Original Cartridge and Strainer
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