Alliance Laundry Systems DT120CSH, Установка, эксплуатация и обслуживание

Страница: 36 / 172

34
M413620
Example of Gas Loop Piping
For 170 Pound Tumblers
Figure 11
Example of Gas Supply Piping
For 170 Pound Tumblers
Figure 12
GAS
METER
MPORTANT: Gas loop piping must be installed
as illustrated to equalize gas pressure for all
tumblers connected to single gas service.
Other gas using appliances should be
connected upstream from loop.
IMPORTANT: Line pressure must be maintained at 7"
±
1" water column inches (1.74
±
.23 kPa) for Natural Gas (11
±
.3 water
column inches [2.74
±
.07 kPa] for L.P. Gas) with all gas appliances running (tumblers, water heaters, space heaters, furnace,
etc.)
An in-line pressure regulator may be required on Natural Gas models if the line pressure exceeds eight water column inches
pressure with all gas appliances firing.
GAS
LINE
PRESSURE
TAP
TUMBLERS
1" (2.5 cm)
PIPE
GAS LOOP
NOTE: Minimum pipe size to
tumbler is 1" (2.5 cm)
GAS SPACE HEATER
GAS
SHUT-OFF
VALVES
PRESSURE
REGULATOR
(If required)
GAS WATER
HEATERS
MAIN
REGULATOR
T034IE3F
1 2 3 4 5 6 7 8 9
T035IE3G
SAMPLE CALCULATIONS:
Equivalent Length = Total length of main gas supply pipe from
the gas meter to the far end of the tumbler dryers.
= 25' + 19' (7.6 m + 5.8 m)
= 44' (13.4 m) Total Gas Line
Using the table in Table 3, the main supply pipe diameter should be 3-1/2" (8.9 cm).
GAS
FURNACE
(120,000 BTU/HR.)
GAS WATER
HEATERS
(400,000 BTU/HR. each)
MAIN
REGULATOR
GAS TUMBLER DRYERS
(395,000 BTU/HR. each)
GAS
METER
19' (5.8 m)
25' (7.6 m)
PRESSURE
REGULATOR
Total BTU/HR = The sum of the BTU/HR. of all
tumblers being fed by the main
gas supply pipe.
= 9 x 395,000
= 3,555,000 BTU/HR.
19' (5.8 m)
GAS SPACE
HEATERS
(70,000 BTU/HR. each)