Columbia CEG-C, Инструкция по установке, эксплуатации и обслуживанию

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19
CONNECTING SUPPLY AND RETURN PIPING, WATER CHILLED MEDIUM
1.
Boiler, when used in connection with a refrig-
eration system, must be installed so the chilled
medium is piped in parallel with the boiler with
appropriate valves to prevent the chilled medium
from entering the boiler. See fi gure 11.
2.
When the boiler is connected to heating coils
located in air handling units where they may be
exposed to refrigerated air circulation, the boiler
piping system MUST be supplied with fl ow con-
trol valves or other automatic means to prevent
gravity circulation of the boiler water during the
cooling cycle.
3.
A hot water boiler installed above radiation level,
or as required by Authority having jurisdiction,
must be provided with a low water cutoff device
either as a part of the boiler or at the time of
boiler installation.
4.
Suggested piping for steam heating system can
be seen in fi gure 1 on page 6. Actual piping may
vary based on system design and local conditions.
Figure 11 - Boiler with Refrigeration System
* Reduced pressure back- fl ow preventer must be present under provisions required by the Environmental
Protection Agency, (EPA).