Bell & Gossett HS 240B User Manual
INSTRUCTION MANUAL
!
HS-240
REVISION B
Dura-Stat
®
Thermostatic Module
For Warren Webster Thermostatic Traps
Model 02H and 502
CAUTION
CAUTION
ARNING
W
• Before using product, read and understand instructions.
• Save these instructions for future reference.
• All work must be performed by qualified personnel trained in the proper application,
installation, and maintenance of steam systems in accordance with all applicable codes
and ordinances.
• To prevent serious burns, wear heat resistant gloves when opening and closing
steam valves, or handling hot equipment.
• To prevent serious burns, the internal pressure of the trap must be 0 psi (0 bar) before
servicing.
Failure to follow this caution could cause personal injury.
INSTALLATION –
1.a Remove the trap cover (A) from the body (B).
b. Unscrew the thermostatic element (C) from
the cover (A).
c. Discard the old thermostatic element (C).
2a. Using a 7/8” (22mm) socket wrench,
remove and discard the seat (E) from
the trap body (B).
b. Discard the old seat (E).
A
C
B
E
B
3. Using a scraper, remove any scale or
debris inside the trap body (B) especially
around the seat area (F). Do not scratch
gasket surface area.
B
F
4. Screw the new Dura-Stat®thermostatic
module (G) into the threaded port
inside the trap body.
5. Using a 3/4” (19mm) socket wrench (H),
tighten the Dura-Stat module approximately
12 lbf•ft (16 N•m).
6a. Reinstall and tighten the trap cover (A)
on the body (B).
G
B
H
B
A
b. Slowly open the steam supply valve.
MAINTENANCE
SCHEDULE:
• Replace Dura-Stat thermostatic module every 4 years.
Xylem Inc.
8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: (847) 966-3700
Fax: (847) 965-8379
www.xyleminc.com/brands/bellgossett
Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. HS-240B October 2012 Part No. 511152
B
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