8
9. WARNING REGARDING CHILLED WATER SYSTEMS
When a boiler is connected to an air conditioning system where the same water is used for
heating and cooling, the chiller must be piped in parallel with the boiler. Appropriate flow control
valves; manual or motorized must be provided to prevent the chilled water from entering the
boiler. (See figure 2)
Figure 1
When a boiler is connected to heating coils located in air handling units (where they may be
exposed to refrigerated air circulation), the boiler piping system shall be equipped with a flow
control valve or other automatic means to prevent gravity circulation of chilled water through the
boiler. Chilled water in the boiler will create condensate on the boiler tubes, which will collect in
the combustion chamber causing corrosion.
10. PIPING OF BOILER TO THE SYSTEM (FIG.3)
Check all applicable local heating, plumbing and building safety codes before proceeding.
Be sure to provide unions and gate valves at inlet and outlet to boiler so that it can be easily
isolated for service.
This boiler is of a low mass design, which provides for instant heat transfer. Special attention to
water flow rates will ensure that temperature rise does not exceed 35 °F (19.4 °C). The following
table 2 is provided as a guide.
For application in areas known to have hard water conditions, contact factory for
recommendations.
Summary of Contents for BLUE-FLAME Series
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