Bell & Gossett HS 219C Dura-Stat Thermostatic Module - Manual

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-219C October 2012 Part No. 510665
INSTRUCTION MANUAL
HS219C
Dura-Stat
™
Thermostatic Module
For Dunham-Bush
Thermostatic Traps,
Model 1E, 1 /2”
CAUTION: TURN OFF STEAM SUPPLY
VALVE AND ALLOW RADIATOR TO COOL
BEFORE REPLACING MODULE.
1 Remove the cover from the trap. Then,
unscrew the old thermostatic element from the
cover using a
1 ⁄
2
" open-end wrench. Discard the
old element.
IMPORTANT: After removing the old element,
be sure to remove any scale or debris from the
trap body interior. NOTE: Some traps may
include a threaded seat insert. If so, do not
remove this seat when installing Dura-Stat.
2 Install the replacement Dura-Stat Module in
the Model 1E trap body by inserting the module
into the machined seat. Then, place the
retainer spring included with the Dura-Stat
Module on top of the module as shown to the
right.
3 Securely (leak tight) re-install the cover on
the trap body, taking care to ensure that the
retainer spring and module remain squarely in
the trap body. Open the radiator supply valve.
2
3
NEW DURA-STAT
MODULE
RETAINER
SPRING
COVER (SAVE)
OLD ELEMENT
(DISCARD)
1