![]() ![]() Anybody who's ever removed an old cast iron boiler using the sledge hammer method knows what I mean.įigure 3. Repair parts are also more readily available for smaller boilers. Smaller/lighter boilers are far easier to install than a single larger unit, especially on retrofit jobs.The idea is to make all the heat output capacity accessible to all the loads. ![]() A boiler that only heats the pool is of no use should the space-heating boiler be down for service. A boiler that's dedicated to snowmelting is of no assistance during a high demand for domestic hot water. Systems that use separate boilers for each of several loads cannot "share" boiler output among the loads. The potential to eliminate several other dedicated heat sources distributed throughout the building, as well as their associated fuel supplies, electrical hook-ups and exhaust systems. ![]() ![]() A multiple boiler system can help provide this peak demand without sacrificing efficiency under much lower space heating loads. As the opulence and number of bathrooms used in many custom homes increases, so does peak demand for domestic hot water.
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