I currently have a .5*F thermostat differential on my baseboard emitter, pellet/oil boiler fed, buffer tank equipped system. So, at a setpoint of 68, the zone circ comes on at 67.5 and shuts off at 68.5. The boilers don't come on and off because of the buffer tank. Running on tank, before a boiler comes on, it gets down to may 130.
I'm thinking of increasing the differential to 1*F, so that a zone circ will come on at 67 and turn off at 69. I'm wondering about the pluses and minuses of doing this.
Pluses:
Pump cycles less. (It is an ECM pump, so maybe not that much of a factor?)
Less getting rid of the cooled water from the pipes
Minuses:
Not as comfortable as .5*F, maybe leading to messing with the thermostat setting
I'm stuck with whatever comes out of the boiler or tank-no mixing on distribution.
On most HVAC systems, is a 1*F differential the norm?
Comments?
I'm thinking of increasing the differential to 1*F, so that a zone circ will come on at 67 and turn off at 69. I'm wondering about the pluses and minuses of doing this.
Pluses:
Pump cycles less. (It is an ECM pump, so maybe not that much of a factor?)
Less getting rid of the cooled water from the pipes
Minuses:
Not as comfortable as .5*F, maybe leading to messing with the thermostat setting
I'm stuck with whatever comes out of the boiler or tank-no mixing on distribution.
On most HVAC systems, is a 1*F differential the norm?
Comments?