SECTION 2 – COMPONENTS
UL EX3830 ULC EX3830
2014-NOV-10 REV. 06 PagE 2-3
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
MODEL MCH3 – MECHANICAL CONTROL HEAD
The Model MCH3 Mechanical Control Head (Part No. 551200)
is a fully mechanical control head which can be connected to
the PCL-160/300/460/600 cylinder valve. This control head will
support a fusible link detection system, a remote mechanical pull
station (Model RPS-M), and a mechanical or electric gas shut-
off valve. a micro electric switch (Model MS-SPDT, MS-DPDT,
MS-3PDT, or MS-4PDT) can be ordered separately and field
installed. It is equipped with a local manual control handle that
allows for mechanical system actuation. Operation of the local
manual control requires removing the pull pin and rotating the
handle clockwise. The Model MCH3 control head can actuate a
maximum of five cylinders with the 16 gram CO
2
cartridge. See
Figure 2-7.
MODEL MCH3 CONTROL HEAD
SET
PYRO-CHEM
ONE STANTON STREET
MARINETTE, WI 54143-2542
FIRED
PULL PIN, TURN HANDLE
TO RELEASE FIRE
SUPPRESSION SYSTEM
FIguRE 2-7
004790PC
MODEL ECH3 – ELECTRIC CONTROL HEAD
The Model ECH3 electric control head is an electrically operated
control head which can be connected to the PCL-160/300/460/600
cylinder valve. This control head will support an electric thermal
detection system, a remote mechanical pull station (Model
RPS-M), and an electric gas shut-off valve. It will not support
a fusible link detection system. an electric (snap-action) switch
(Model MS-DPDT) is included.
The Model ECH3 control head is available in both 120VaC
(Model ECH3-120 (Part No. 551202)) and 24VDC (Model
ECH3-24 (Part No. 551201)). It is equipped with a local manual
control handle that allows for mechanical system actuation.
Operation of the local manual control requires removing the pull
pin and rotating the handle clockwise. The Model ECH3 control
head can actuate a maximum of five cylinders with the 16 gram
CO
2
cartridge. See Figure 2-8.
Note:
When utilizing electric detection, it is recommended that
the Model ECH3-24 electric control head be used with either
the aUTOPULSE 542R Control Panel (Part No. 433607) or
the aUTOPULSE Z-10 Control Panel (Part No. 430525). If the
ECH3-120 control head is to be utilized, it must be used with
Solenoid Monitor, Model SM-120 (Part No. 550302), along with
a UL Listed 1a, 120VaC power supply (by others), in accor-
dance with NFPa 17a, NFPa 96, and the local authority having
jurisdiction.
FIguRE 2-8
004789PC
MODEL NMCH3 – MECHANICAL CONTROL HEAD
The Model NMCH3 Mechanical Control Head (Part No. 551203)
is a fully mechanical control head which can be connected to
the PCL-160/300/460/600 cylinder valve. This control head will
support a fusible link detection system, a remote mechanical pull
station (Model RPS-M), and a mechanical or electric gas shut-
off valve. an electrical (snap-action) switch (Model MS-SPDT,
MS-DPDT, MS-3PDT, or MS-4PDT) can be ordered separately
and field installed. There is no local manual actuation for the
Model NMCH. The Model NMCH3 control head can actuate a
maximum of five cylinders with the 16 gram CO
2
cartridge.
FIguRE 2-9
006843PC
MODEL EN-MCu3 ENCLOSuRE
The Model EN-MCU3 Enclosure (Part No. 551208) is used for
vertical mounting of a single PCL-160, PCL-300 or PCL-460.
The EN-MCU3 also includes a mechanical control unit, eliminat-
ing the need for a Model MCH3 control head. See Figure 2-10.
Note:
The PCL-600 cannot be mounted in an EN-MCU3.
FIguRE 2-10
002845PC
