Is the cast iron heat exchanger suitable for condensing?
Cast iron heat exchangers feature a sectional heat exchanger design and benefit from large waterways. That’s why they deal well with debris in circuits of older heating systems, making them a great choice for refurbishment projects. Cast iron boilers are usually not suitable for condensing due to risk of corrosion from acidic flue gases.
Which is the best boiler heat exchanger for commercial use?
However, our ErP-compliant Purewell Variheat mk2 cast iron condensing boiler overcomes this with the addition of a second heat exchanger that enables it to condense. Have a look at our Purewell Variheat mk2 customer video to learn more about the benefits of using this cast iron commercial boiler in existing installations.
Is the Purewell variheat a cast iron boiler?
The robust cast iron heat exchanger in the Purewell VariHeat boiler makes it very tolerant of old heating systems. The design also allows for simple replacement of a single section, if required.
Can a cast iron boiler be used for hot water heating?
Cast-Iron Boilers. Cast-iron boilers may be used in steam heating or hot water heating applications within the scope and service restrictions of ASME BPV Code Section IV.
Is the cast iron heat exchanger good for condensing?
There’s a reason cast iron has been the choice of boiler manufacturers for hundreds of years…yes, hundreds of years. They last a very long time. At the core of the KN-Series is a time-tested cast iron heat exchanger, only better. Cast iron is an ASHRAE-approved material for condensing boiler applications.
What are the specifications for a cast iron boiler?
ASME BPV Code Section IV service restrictions limit steam boilers to pressures not exceeding 15 psi and hot water boilers to pressures not exceeding 160 psi and/or temperatures not exceeding 250°F. Cast-iron boilers can be constructed in different configurations.
Cast-Iron Boilers. Cast-iron boilers may be used in steam heating or hot water heating applications within the scope and service restrictions of ASME BPV Code Section IV.
What does the water temperature sensor on a cast iron boiler do?
9 Water temperature sensor The water temperature sensor monitors the temperature of the water entering the boiler sections. The sensor sends this information to the IBC. The IBC determines how much to adjust the circulator flow rates to provide at least 140°F water to the cast iron heat exchanger.
