I want to replace electric heat in my duplex with a combi boiler here in London Ontario.
Building is built in 1880 and a side by side duplex, each side 700 sq ft, with poor insulation and dirt basement.
I have a gas fitter to install the combi boiler, but he doesnt want to do the plumbing, so i will be doing the waterline work myself using uponor(wirsbo) fittings. I will be installing a basic 2 zone (one for each unit) setup as described in the installation manual. (I cant seem to find the pic at the moment but will post when i find it)
Current Heating looks like this:
Unit A
Living Room 750W 48" Register
Kitchen 750W 38" Register
Small Bed Room 750W 38" Register
Large Bedroom 750W 38" Register
Bath None
Unit B
Living Room 750w 48" Register
Kitchen None 750W 48" Register
Small Bed 750w 38" Register
Large Bed 750w 38" Register
Bath currently none, but want smalls register added
Here is my proposed Equipment list, I will update as i figure out new items
Current Proposed Equipment list:
Navien Combi Boiler NCB-180E ?
Navien Prebuilt manifold (i forget official name)
3/4" Pex A uponor for water source
1" Pex A uponor for closed loop lines (must be oxygen)
3/4" uponor shut offs unknown quantity
1" uponor shut offs unknown quantity
backflow preventor for feed water source
condensate stabilizer/filter
aquastat (i dont know what this is)
2" pvc input/output
pressure relieve valve (this may be included)
2x Taco Viridian 1816 or a Grundfos Alpha 2 15-55
2x Ecobee thermostats?
relat for thermostats taco/unknown model (2 zone model)
dirt separator model unknown?
Air Eliminator model unknown?
expansion tank size/model unknown?
9x radiators size/model unknown?
7 TRV Valves size/model unknown? (install all rooms except where thermostats are)
Some questions:
1) How do i determine combi boiler size? I want to just basically replace the current electrical registers with radiators in same spot and size. Since building is about 1400 sq ft, looks like my requirement is about 60,000 btu (2000x30) So since my house is old and poor insulation, and live in cold climate, would a NCB-180E work for me? which is 14,000 - 80,000 BTU/H
2)How do i determine new radiator sizes? is there an easy way to convert the electric sizing to water radiator sizing? or are water radiators listed in W?
3)If i install with 2 circulators, (one for each init) How do i size the circulators?
4)How do i size the expansion tank? and does any of the other equipment need sizing?
5)Any other tips, advice or equipment selection is greatly appreciated!
Thanks!
Building is built in 1880 and a side by side duplex, each side 700 sq ft, with poor insulation and dirt basement.
I have a gas fitter to install the combi boiler, but he doesnt want to do the plumbing, so i will be doing the waterline work myself using uponor(wirsbo) fittings. I will be installing a basic 2 zone (one for each unit) setup as described in the installation manual. (I cant seem to find the pic at the moment but will post when i find it)
Current Heating looks like this:
Unit A
Living Room 750W 48" Register
Kitchen 750W 38" Register
Small Bed Room 750W 38" Register
Large Bedroom 750W 38" Register
Bath None
Unit B
Living Room 750w 48" Register
Kitchen None 750W 48" Register
Small Bed 750w 38" Register
Large Bed 750w 38" Register
Bath currently none, but want smalls register added
Here is my proposed Equipment list, I will update as i figure out new items
Current Proposed Equipment list:
Navien Combi Boiler NCB-180E ?
Navien Prebuilt manifold (i forget official name)
3/4" Pex A uponor for water source
1" Pex A uponor for closed loop lines (must be oxygen)
3/4" uponor shut offs unknown quantity
1" uponor shut offs unknown quantity
backflow preventor for feed water source
condensate stabilizer/filter
aquastat (i dont know what this is)
2" pvc input/output
pressure relieve valve (this may be included)
2x Taco Viridian 1816 or a Grundfos Alpha 2 15-55
2x Ecobee thermostats?
relat for thermostats taco/unknown model (2 zone model)
dirt separator model unknown?
Air Eliminator model unknown?
expansion tank size/model unknown?
9x radiators size/model unknown?
7 TRV Valves size/model unknown? (install all rooms except where thermostats are)
Some questions:
1) How do i determine combi boiler size? I want to just basically replace the current electrical registers with radiators in same spot and size. Since building is about 1400 sq ft, looks like my requirement is about 60,000 btu (2000x30) So since my house is old and poor insulation, and live in cold climate, would a NCB-180E work for me? which is 14,000 - 80,000 BTU/H
2)How do i determine new radiator sizes? is there an easy way to convert the electric sizing to water radiator sizing? or are water radiators listed in W?
3)If i install with 2 circulators, (one for each init) How do i size the circulators?
4)How do i size the expansion tank? and does any of the other equipment need sizing?
5)Any other tips, advice or equipment selection is greatly appreciated!
Thanks!
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