Heating with domestic water
Heating with domestic water
(OP)
Is there a unit heater that can be used to heat using domestic hot water. Does the coil need to comply with ANSI/NSF61?
It would be to heat an apartment building stairway. The building does not have a heating hot water system but it does have a central domstic hot water system.
I can not use electric heat.
Any other ideas?
It would be to heat an apartment building stairway. The building does not have a heating hot water system but it does have a central domstic hot water system.
I can not use electric heat.
Any other ideas?





RE: Heating with domestic water
RE: Heating with domestic water
You could use the recirculation system as a source of heat for one unit heater (just extending the length of the system).
Any reason you can't use electric?
RE: Heating with domestic water
You just have to have provisions to limit the hot water to the plumbing fixtures to a maximum 140 deg F and you must maintain the potability of the system, i.e. no chemicals and must not be a closed system.
RE: Heating with domestic water
RE: Heating with domestic water
RE: Heating with domestic water
RE: Heating with domestic water
All this is is running the hot water recirc. through a cabinet unit heater coil in the stairwell. The unit heater manufacturer certifies that their coil complies with NSF 61.
The problem I see is that I would not want to ever stop the flow (and stagnate the water) so the water would run through the coils in the summer also.
The point is moot as the city building code offciial here will not allow it.
RE: Heating with domestic water
RE: Heating with domestic water