Hello,
my oil fired boiler is used for hydronic heating of the home, as well as providing domestic hot water via a tankless coil. The domestic hot water supply is somewhat inconsistent (can go from scalding to luke warm to cold during a shower), and seems to burn a lot of oil short-cycling the boiler to maintain the temperature for domestic hot water supply. I've played with the temperature settings of the controller - White-Rodgers 8B43A-601, see link below....
http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwirlfzOjcXKAhUkg4MKHVNFCokQFggbMAA&url=http%3A%2F%2Fwww.emersonclimate.com%2Fdocuments%2Fwhite-rodgers%2Finstruction_sheets%2F0037-5488.pdf&usg=AFQjCNEzZmxFs2oF0lHhMnT19qIY2wGkGg&bvm=bv.112454388,d.amc
The controller has a high limit & low limit-circ control, it's advised that the high limit setting is 20 degrees above the low. The low limit control has two settings / dials (for a low and high setting of the low limit).
I'm considering abandoning the tankless coil and installing a 40 gallon hot water heater for my domestic HW. I'm just wondering if my existing controller can be reconfigured / re-wired for use without a tankless coil. I've done a simple mod of the wiring diagram from the manual....(see attached picture).
Would this configuration work? Essentially, the boiler operates as normal, except it would require a call for heat from the thermostat to initiate operation, and would not maintain the low-limit for domestic use.
#1 & #2 Relay contacts require a call for heat from thermostat to close. The low limit control also initiates the circ pump when the low limit temp is satisfied (locks out circulator is water temperature is too low). This is all standard operation, except I would re-wire the #1 relay contact control wire to the low-limit-circ control, and a call for heat is required to initiate boiler operation.
Would there be any issues with this configuration?
thanks.
my oil fired boiler is used for hydronic heating of the home, as well as providing domestic hot water via a tankless coil. The domestic hot water supply is somewhat inconsistent (can go from scalding to luke warm to cold during a shower), and seems to burn a lot of oil short-cycling the boiler to maintain the temperature for domestic hot water supply. I've played with the temperature settings of the controller - White-Rodgers 8B43A-601, see link below....
http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwirlfzOjcXKAhUkg4MKHVNFCokQFggbMAA&url=http%3A%2F%2Fwww.emersonclimate.com%2Fdocuments%2Fwhite-rodgers%2Finstruction_sheets%2F0037-5488.pdf&usg=AFQjCNEzZmxFs2oF0lHhMnT19qIY2wGkGg&bvm=bv.112454388,d.amc
The controller has a high limit & low limit-circ control, it's advised that the high limit setting is 20 degrees above the low. The low limit control has two settings / dials (for a low and high setting of the low limit).
I'm considering abandoning the tankless coil and installing a 40 gallon hot water heater for my domestic HW. I'm just wondering if my existing controller can be reconfigured / re-wired for use without a tankless coil. I've done a simple mod of the wiring diagram from the manual....(see attached picture).
Would this configuration work? Essentially, the boiler operates as normal, except it would require a call for heat from the thermostat to initiate operation, and would not maintain the low-limit for domestic use.
#1 & #2 Relay contacts require a call for heat from thermostat to close. The low limit control also initiates the circ pump when the low limit temp is satisfied (locks out circulator is water temperature is too low). This is all standard operation, except I would re-wire the #1 relay contact control wire to the low-limit-circ control, and a call for heat is required to initiate boiler operation.
Would there be any issues with this configuration?
thanks.
