SECTION 3 – SYSTEM DESIGN
UL EX3830 ULC EX3830
PagE 3-22 REV. 06 2014-NOV-10
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
Design Steps (Continued)
Step No. 5
Check to make certain minimum volumes and
maximum volume allowed between first nozzle and
last nozzle are not exceeded (Table 3-6: Tanks).
Check each rule in “general Piping Require ments”
on Page 3-19 to make certain none have been
exceeded. If any requirement is exceeded, change
to a different pipe size and recalculate. See Figure
3-38.
Refer to Table 3-6: Tanks
Minimum Pipe Volume for PCL-300 is 300 milli-
liters protecting a fryer, wok, or range
(Example
system pipe volume is 1781 milliliters, therefore
OK)
Maximum Pipe Volume for PCL-300 is 1910
milliliters
(Example system pipe volume is 1781
milliliters, therefore OK)
Maximum Volume Allowed Between First
Nozzle and Last Nozzle for PCL-300 is 1125
milliliters
(Example system, the amount of 3/8 in.
piping between g and L, is 25.5 ft. and 25.5 ft x
37.5 mls/ft = 956.3 ml, therefore, OK)
Refer to General Piping Requirements
1. Split piping and straight piping are both
allowed on PCL-300 and PCL-460 systems.
(Example system OK)
2. PCL-600 systems must use split piping
only, with no nozzle located before the
split, and with a maximum of fourteen flow
points per side. 1/2 in. minimum piping
must be used up to the first split.
(Example
system N/a)
3. Maximum volume for 1/4 in. pipe between
a nozzle and the preceding tee is 410 mls.
(Example system N/a)
4. Maximum flow numbers for 1/4 in. pipe is
six.
(Example system N/a)
5.
Maximum number of elbows between
a nozzle and the preceding tee is five.
(Example system has a maximum number of
two, therefore, OK)
6. Maximum of 25 elbows are allowed in the
total piping system.
(Example system has 11
elbows, therefore, OK)
7. Maximum difference in elevation between
the tank outlet and any nozzle, or the tank
outlet and the highest or lowest horizontal
pipe run, is 10 ft (3.0 m)
(Example system
has 5.5 ft (1.6 m), therefore, OK)
8. No traps are allowed in the piping network.
(Example system has no traps, therefore, OK)
9. Pipe lengths are measured from center
to center of fittings.
(Example system pipe
lengths were measured from center to center
of fittings, therefore, OK)
10. The internal equivalent length volume of
fittings does not have to be considered
as part of the total pipe volume.
(Example
system OK)
11. when utilizing different size pipe in the
total system, the largest size must start
first and the additional pipe must decrease
as it approaches the nozzle.
(Example
system N/a)
12. Elbow(s) or swivel adaptors located at the
nozzles do not have to be counted in the
25 elbow maximum requirement.
(Example
system OK)
13.
Additional piping requirements when
protecting a range, wok, or a fryer:
• PCL-300 - Minimum of 300 ml and four
flow numbers required in total system.
Of that minimum, 239 ml and two flow
numbers must be utilized at or before the
range, wok, or fryer.
(Example system has
1781 ml and ten flow numbers, therefore,
OK. The example system has 1050 ml and
three flows including the fryer, therefore,
OK)
• PCL-460 – Minimum of 660 ml and ten flow
numbers required in total system. Of that
minimum, 180 ml and two flow numbers
must be utilized at or before the range, wok,
or fryer.
• PCL-600 – Minimum of 960 ml and fourteen
flow numbers required in total system. Of
that minimum, 120 ml and two flow numbers
must be utilized at or before the range, wok,
or fryer.
006193PC
GEN. PIPING
RULE NO. 5
TANk CHART
MaX. VOL.
BETWEEN
FIRST aND
LaST NOzzLE
GEN. PIPING
RULE NO. 13
GEN.
PIPING
RULE
NO. 10
GEN. PIPING
RULE NO. 1, 8, 9
GEN. PIPING
RULE NO. 12
GEN. PIPING
RULE NO. 6
GEN.
PIPING
RULE
NO. 7
TANk CHART
MINIMUM/MaXIMUM
PIPE VOLUME
TANk CHART
MaX. VOL.
BETWEEN FIRST
aND LaST NOzzLE
FIGuRE 3-38
