SECTION 4 – SYSTEM INSTALLATION
UL EX3830 ULC EX3830
2014-NOV-10 REV. 06 PagE 4-23
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
System Checkout After Installation (Continued)
Using a felt-tipped marker, write the date of installation on the
carbon dioxide pilot cartridge. Screw the cartridge into the Model
EN-MCU3 actuator until hand-tight.
Install cartridge per the following:
a. It is recommended that the cartridges first be fully hand
tightened and then further tightened 1/4 to 3/4 turn using a
needle-nose Vise-grips.
Note: Use caution not to damage
cartridge with Vise-Grips.
Note 1:
Four to five threads should be showing when the
cartridge is engaged properly. It is important that no more than
five threads be showing.
Note 2:
The cartridge and o-ring shall be replaced annually.
CAUTION
Do not over-tighten cartridge. Over-tightening can result in
premature puncturing of the cartridge seal.
Remove the pull pin from the hole in the slide plate. Secure the
Model EN-MCU3 or EN-S cover with the screws provided.
FLEXIBLE CONDUIT INSTALLATION
Flexible conduit allows for quicker installations and the conve-
nience of being able to route the cable over, under, and around
obstacles.
Flexible conduit is designed for use with PYRO-CHEM® restau-
rant systems. Flexible conduit can be used as a substitute for
standard EMT conduit or can be used with EMT conduit.
NOTICE
Flexible conduit CANNOT be used in
detection systems. Flexible conduit is
intended for indoor use only.
Design Requirements
• Prior to starting the flexible conduit installation, the detection
system must be complete and attached to the control head.
• Flexible conduit
cannot
be utilized in detection systems.
• Flexible Conduit Inserts (Part No. 434347) can ONLY be used
with the flexible conduit system.
• The maximum distance from a PYRO-CHEM control head to
a mechanical pull station is 140 ft (42.6 m) with a maximum
of 360° (for example, 3-90° and 2-45° bends, 2-90° and 4-45°
bends, etc.) bends in the flexible conduit, one pulley tee (refer
to Design, Installation Manual for detailed splicing instruc-
tions), two splices, and 15 pulley tees.
Note:
When installing
flexible conduit, make sure to feed wire rope through conduit
directly from the spool of wire rope. DO NOT pre-cut wire rope.
Feeding pre-cut rope through flexible conduit will cause exces-
sive kinks in the rope, making it difficult to install.
• The maximum distance from a PYRO-CHEM control head to
a mechanical gas valve is 75 ft (22.8 m) with a maximum of
4-90° bends in the flexible conduit and four pulley elbows.
• Any portion of the flexible conduit system can be substituted
with EMT conduit provided the proper connections are used to
join the two types of conduit.
• All bends in the flexible conduit system must have a minimum
bend diameter of 6 in. (153 mm).
• When the flexible conduit is used to make 90° bends between
a control head and a mechanical gas valve, the bends must
start at the control head. No pulley elbows can be used
between the bends. If more than 360° of bends are needed,
then pulley elbows can be used.
• When the flexible conduit is used to make 90° bends between
a control head and a pull station, the bends must start at the
control head. No pulley elbows can be used between the
bends. If more than 360° of bends are needed, then pulley
elbows can be used.
• Only PYRO-CHEM pull stations utilizing a composite (black)
bushing on the back side of the pull station cover can be used
with flexible conduit.
• When not utilizing a Conduit Offset (Part No. 436063) 2-45°
bends in the flexible conduit are allowed between the strain
relief on top of the control head and the location where the
flexible conduit is supported.
Note: This is allowed on pull
station installations only.
• When installing flexible conduit, conduit should be secured at
intervals not to exceed 5 ft (1.5 m) and before and after each
bend. Flexible conduit CaNNOT slide in the clamp(s) used for
mounting. Make certain mounting clamp(s) do not pinch the
flexible conduit. The following style clamp (‘P’ clip) (Part No.
436150) is a suitable type for use on flexible conduit.
FIGURE 4-38
008141
TABLE 4-1
Manual Mechanical
Pull
gas Valve Detection
90° Cable Bends
4
4
N/a
Bend Diameter – in. (mm)
6 (152)
6 (152)
N/a
Mechanical Corner Pulley
15
4
N/a
Conduit Secured Max. ft (m) 5 (1.5)
5 (1.5)
N/a
Conduit Max. Length ft (m) 140 (42.6) 75 (22.8)
N/a
Conduit Offset or 2-45°
1
0
N/a
Bends (Only between the
strain relief fitting and
support location)
Pulley Tees
1
0
N/a
Splices
2 0 N/a
