*Designed and installed a new radiant system three years ago with all the best bells and whistles. It sets in my mechanical room, un-commissioned and ready to be dismantled and updated. Heated whole house upstairs and down using a 20K open log gas fire place in basement. Hit design day 5 nights in three winters and the temp in the house dropped to 61. Most of the time, the kitchen at the top of the stairs stayed around 68-71. Back bedroom down the hall stayed around 64 put was backed up with an electric heater with thermostat control and ceiling fan to keep heat off ceiling. Live in SE Ohio.
Can I use my new unused K2 boiler till it carps out, for DHW heating only? Way over kill, but is better than junking it. It will be connected to my new unused Burnham 50 gal. stoned lined, Alliance indirect hot water heater. Will just hook up directly using boilers circ pump and internal thermostat to keep the system at temp. Best I can figure, it should work like a buffer tank operation. With the tank being stone lined and heated to 180 degrees, using mixing valve, it should only cycle two or three times a day, never run out of hot water and last forever. Or not.
Yes, Maybe, He## No ?
*Home is a 1650 sq/ft first floor, 1650 basement, ranch with R60 attic, R19+ walls and R13 in walls in basement . Will be placing pex al pex in ceiling using information from these two links:https://www.pmmag.com/ext/resources/PM/2014/June/016-020-0614-Siggy.pdfhttps://www.jlconline.com/how-to/hvac/installing-a-radiant-wall_o
*Heat loss is figured at 24,500 BTU/ph. Water temp required will be somewhere between 95 and 110.
*Each room will have it's own radiator in ceiling controlled by a Caleffi TRV on a straight connector located in a box in the wall near light switch.
*System water will be heated by a natural gas absorption heat pump: (information only)https://www.energy.gov/energysaver/heat-pump-systems/absorption-heat-pumpshttps://www.robur.com/heat_pumps/gas_absorption_heat_pump_for_homes_k18https://www.energy.gov/eere/buildings/downloads/absorption-heat-pump-water-heater-0
Or some kind of air to water heat pump.
*Circulation will be handled by my new unused Alpha2 15-55 ECM pump (originally designed for TRV systems) located just after my new unused Caleffi SEP4 4-n-1 hydraulic separator.
*Manifold will be .75 pex al pex run up to and down the middle of the attic for supply to ceilings and all returns will run from ceiling, through TVRs in wall box near light switch and back to return manifold in mechanical room.
*Would it be better to have all the runs start and end at the TRVs on the manifold in mechanical so there are no connection in wall or ceiling to leak?
Hope to end up with the basic of basic systems, easy to run, maintain and pretty much Bulletproof.
(no bells, whistles, control boxes, zone valves, zone pumps, flow regulators other than TRVs, thermostats)
What's missing or will not work?
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