Classic CL 4030, Руководство пользователя

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14
Section 1 - Furnace Installation
NOTE: At least one circulation pump must run
continuously to ensure proper operation of the
outdoor furnace.
The circulation pump(s) must be installed in the
supply line(s) with the arrow on each pump pointed
away from the outdoor furnace. In order to avoid
circulation problems, do not install the pump(s) in the
return line(s).
The pump(s)s must be located near the base of the
outdoor furnace if the system has a high-flow pump
or very low resistance on the outlet side of the pump.
For example, if the outdoor furnace is 20 feet from the
building and pumping water through one-inch pipes,
a 50-plate heat exchanger, and back to the outdoor
furnace, the pump needs to be mounted with four feet of
water above the pump.
NOTE: See the Hydronic Component Selection
Guide (p/n 2482) for more information.
Fig. 16
Circulation
Pump
© 2013 Central Boiler
Installing the circulation pump(s) at the outdoor furnace
is recommended, but required if the building being
heated is higher than the outdoor furnace or if there is a
large rise in the water lines between the outdoor furnace
and building (see Fig. 17 and 18). Hot water boils at a
lower temperature when pulled uphill (because it is at
a lower pressure); therefore, hot water must be pushed
uphill to ensure proper circulation.
Fig. 17
If water is to be pumped uphill, the
circulation pump must be located
in the hot supply line on the furnace.
Ground
Level
Water Level
© 2007 Central Boiler
Not 4 ft.
Building to be heated
Fig. 18
Water Level
Ground
Level
Building to be heated
© 2007 Central Boiler
The circulation pump must be located in the hot supply line on the furnace
if there is too much rise in the lines between the furnace and buildings.
If not mounted on the outdoor furnace, the circulation
pump(s) must be mounted 4 to 5 feet lower than the top
water level in the outdoor furnace (see Fig. 19).
Fig. 19
4 ft. min.
Pump must be installed
in the hot supply line,
before the heat exchanger,
and may be located inside
this building or on the
outdoor furnace.
Water Level
Building to be heated
Ground
Level
© 2009 Central Boiler
Shut-Off Valves
Shut-off valves should be installed on both sides of each
pump so if it becomes necessary to repair or replace the
pump, the pump can be isolated.
Filters
A Y-strainer or filter may be installed at the outlet side
of the pump to remove foreign particles which may be
present in the water. Always install Y-strainers with the
cleanout in the lowest position.