SECTION 4 – SYSTEM INSTALLATION
UL EX3830 ULC EX3830
PagE 4-2 REV. 06 2014-NOV-10
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
CONTROL HEAD INSTALLATION (Continued)
Multiple Cylinder Installation
1.
Multiple Cylinder actuation Using MCH3/ECH3/NMCH3
Control Head
The Model MCH3/ECH3/NMCH3 Control Head can be used to
pneumatically actuate a maximum of five agent cylinders with a
16 gram CO2 cartridge. When a control head is used for multiple
cylinder actuation, it cannot be mounted directly onto a cylinder
valve. The control head must be installed remotely using a
Model MB-P2 Control Head Mounting Bracket. The bracket must
be anchored to the wall using bolts or lag screws.
CAUTION
Do not screw the control head directly to a wall as this will warp
the control head, not allowing the mechanism to actuate.
In order to actuate the agent cylinder(s) from a control head, a
1/4 in. NPT x 45° 1/4 in. flare type fitting (conforming to SaE
J513c) or Male Straight Connector (Part No. 32338) must be
screwed into the base of the control head actuator. Pneumatic
tubing or stainless steel actuation hose is then used to connect
the control head to the valve cap assembly of each agent cylin-
der valve. See Figure 4-3.
NOTICE
Pneumatic tubing (copper) used for remote
cylinder actuation shall have an outside diam-
eter of 1/4 in. with a minimum wall thickness
of 1/32 in. (0.8 mm). This is commonly known
as refrigeration-type copper tubing. all tubing
fittings shall be of the 1/4 in., 45° flare type
conforming to SaE J513c.
Compression type fittings are not accept-
able.
a single Model MCH3/ECH3/NMCH3 Control Head can actuate:
1. Up to four cylinders with a maximum of 25 ft (7.6 m) of
copper or stainless steel pneumatic tubing or stainless
steel actuation hose when using an o-ring (Part No. 55531)
installed in place of the Teflon washer and the 16 gram CO2
cartridge.
2. Up to five cylinders with a maximum of 18 ft (5.4 m) of
copper or stainless steel pneumatic tubing or stainless
steel actuation hose when using an o-ring (Part No. 55531)
installed in place of the Teflon washer and the 16 gram CO
2
cartridge.
CAUTION
Confirm the Teflon washer in the control head actuator assem-
bly has been replaced with the o-ring (Part No. 55531) and the
16 gram CO2 cartridge is installed for four and five cylinder
single control head actuation.
The actuation line must be tested for any leaks by using a hand
held or electric vacuum pump. The pump should be used to draw
a vacuum on the actuation line at the fitting closest to the control
head. a vacuum should be pulled to 20 in. (508 mm) of mercury.
Leaks exceeding 5 in. (127 mm) of mercury within 30 seconds
are not allowed. If the gauge on the vacuum pump indicates a
leak in the line, examine the actuation line for loose fittings or
damage. Correct any leaks and retest.
FIGURE 4-3
004428PC
1/4 IN. OD COPPER TUBINg OR S.S. aCTUaTION HOSE
MaX. 18 FT (5.4 m) FOR FIVE CYLINDER aCTUaTION
MCH3, NMCH3, OR ECH3
CONTROL HEaD
1/4 IN. NPT X 45° 1/4 IN. FLaRE TYPE
FITTINg (SaE J513c) OR MaLE STRaIgHT
CONNECTOR (PaRT NO. 32338)
TO REMaININg
CYLINDERS
45° 1/4 IN. FLaRED
TUBINg NUT WITH
COPPER TUBINg