User's Manual

September 2013 B-6 P/N 81-CO2MAN-001
B-5 PNEUMATIC CONTROL HEAD (1-inch, 40-SECOND)
B-5.1 Description
The 1-inch, 40-second control head P/N 872318, is never connected directly to a HAD, only
indirectly through an intervening device such as a mercury check or a pneumatic transmitter.
The combination of diaphragm and vent settings for the pneumatic control head is shown in
Table B-1.
Figure B-4. Pneumatic Control Head (1-inch, 40-second)
B-5.2 Installation
Refer to Paragraph 4-4.10 for installation instructions.
Table B-1. Pneumatic Control Head (1-inch, 40-second), Settings
Setting Control Head Part Number
1-inch, 40-second vent 872318
PATENT: 246675
WALTER KIDDE
PART NO.
SET
RELEASED
INSTRUCTIONS
SEE
MAINTENANCE
FOR
USE SCREWDRIVER
PULL
CABLE
Kidde
TO RESET
CONTROL HEAD
PNEUMATIC
CONECTION FOR
DETECTION TUBING
3/16 in. TUBING NUT
FITS HERE
CONNECTION FOR REMOTE PULL
BOX PIPE OR CONDUIT
3/8 in. NPS FEMALE
LOCAL MANUAL
RELEASE LEVER
SWIVEL NUT
1-1/2 in. (38 mm)
HEX 1-1/4-18
NF-3 THREAD
4-13/16 in.
(122 mm)
CONNECTION FOR CABLE
HOUSING TO SECOND
CONTROL HEAD (IF USED)
3/8 in. NPS FEMALE
3-5/16 in.
(84 mm)
INDICATOR AND
RESET STEM
SEAL WIRE
LOCKING PIN