Xylem MM 702E Series 14-B Ball Type Blow Down Valve - Manual (Page 2)

2
b. Shut off the inlet water supply by closing the make
up water feed valve.
c. Open the blow down valve (D). Drain
the control (A) to a point where no addi-
tional water can enter the control. Let
the control (A) and surrounding equip-
ment to cool to 80˚F (27˚C) and allow
pressure to release to 0 psi (0 bar).
A
D
A
D
d. Using a pipe wrench (B), remove the
blow down pipe (C) from the existing
blow down valve (D).
B
D
C
C
D
B
STEP 1 - Preparation
INSTALLATION –
TOOLS NEEDED:
One (1) flathead screwdriver, one (1) scraper, one (1) pipe
wrench, one (1) hammer, and pipe sealing compound.
a. Shut off the boiler and disconnect the power to the
entire boiler system.
OFF
ON
OR
OR
To prevent serious burns, wear heat resistant gloves when opening and closing valves, or handling hot
equipment.
To prevent serious burns, allow the control and surrounding equipment to cool to 80˚F (27˚C) and allow
pressure to release to 0 psi (0 bar) before servicing.
Failure to follow this caution could cause personal injury.
! CAUTION