C437D,E,F,G,H,J,K AND C637B GAS PRESSURE SWITCHES
60-2320—9 4
Fig. 1. Installation dimensions of the C437 and C637 gas pressure switches, in in. (mm).
RECYCLING NOTICE
This control contains mercury in a sealed tube. Do
not
place control in the trash at the end of its useful life.
If this control is replacing a control that contains
mercury in a sealed tube, do
not
place your old
control in the trash.
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of this control, or of an old control containing
mercury in a sealed tube.
2 (50.8)
45°
45°
7-3/8 (187.3)
1/8–27 NPT 1/2–14 NPT TAPPED FOR 1/2 IN.
CONDUIT
1
1
2
2
137755 MOUNTING BRACKET (2), IN 4074BWK BAG ASSEMBLY – STANDARD
ON C437G AND H; OPTIONAL ON OTHER MODELS.
VENT TAPPING. REMOVE DUST-SEAL LABEL BEFORE MOUNTING. M7192
6-1/4 (158.8)
5/16 (7.9) (4)
5/8
(15.9)
(4)
7-11/16
DIA.
(195.3)
7-3/4
(196.9)
6-1/2
(165.1)
1/8
(3.2)
1
(25.4)
1-5/16
(33.3)
3-7/16 (87.3)

INSTALLATION

When Installing this Product…

Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
Installer must be a trained, experienced, flame
safeguard control technician.
After installation is complete, check out product
operation as provided in these instructions.