Hello All! I am currently replacing my heating system. I plan to install a 4 zone radiant heat and domestic hot water off of an unpurchsed tankless water heater
. What I would like to do is run 4 zones. Two zones on the first floor with PEX radiant heat and then one zone on the second floor with baseboard and one zone in basement also with baseboard.
First floor: PEX 1/2" radiant heat ran through floor joists
Zone 1- Living room, Dining room, Foyer, and Kitchen (781 sf total)
Zone 2- (2) Bedrooms, Bathroom, and hallway
Second Floor: baseboard
Bedroom (326 sf) and Nursery/Hall (100 sf) 426 sf total
Laundry (110), Hallway (36), and Family Room (234) 380 sf total
I am very confident that I can install all the Pex and baseboard, my only concerns are running the two different types off of one heat source. Pretty sure baseboard is hotter than radiant.
What water heater should I get? I am looking at Takagi T-D2-IN but fear it may be an overkill
What pumps should I get? I have been looking at the Taco pumps, but don't know what size to get. Different for each zone size? i would assume
What controls the pumps. I know obviously a thermostat, but saw something about a zone relay controller or something.
And last for now; I have been doing a lot of research, and i have seen a few different set ups. most are similar, but some call for an expansion tank. I don't see the need in an open system. Either way i have a fairly new one from my previous, closed, oil fueled, radiator system.
It is starting to get cold, and my pregnant wife is being very patient. I am starting to pipe the gas in tomorrow and want to get everything i need. I would appreciate any help, even if just links to better guides.
I am looking for a detailed plan to put this together right the first time. I would appreciate any recommendations as far as products and/or suggestions. I have nothing at the moment, other than electric baseboards in the 2nd floor bedroom.
I also considered putting in forced hot air instead of the water. Mainly for the ease if putting in central air in the future. Just didn't want to lose the head room in the basement; only 7' as it is.
Thank you in advance!