I’m looking to replace several standard large K2/K3 radiators in our house with ‘Jaga Strada’ fancoil-style radiator units (passive, without fans, small heat exchanger with thin aluminium fins attached to copper pipe).
System is a Vaillant Arotherm Plus 7kW, with ~40sqm of UFH in screed on the ground floor and bathroom, and 10x K2/K3 radiators everywhere else (average size: 1400x600), so a good amount of system volume (no volumiser/buffer). ~5kW heat loss (-2C/22C), real-world design flow temp: 38C.
The datasheet power outputs for the Jaga units are similar/slightly greater than the existing radiators, but the water volume contained within is one-quarter of that inside the existing radiators, so the overall water volume will be reduced by ~60 litres.
Does anyone have experience with such Jaga fancoil-style radiators, in lieu of normal steel rads?
Progress has been slow with this, but scope has crept.
Anyone with experience of plumbing up rads in funky orientations up for advising on this?
Looking to fit a Jaga Strada heat exchanger in a vertical orientation, which it’s not designed to do, so I’m brainstorming venting/bleeding options to prevent airlocks. Would the below work? 2x manual bleed valves, each positioned at the highest point per flow/return bends.
Ignore the U-shaped grey bend, this won’t be there on the specific type (Type 15) of heat exchanger I’ll be mounting vertically.
If you have a SpiroVent microbubble deaerators on the flow from boiler/heatpump, run system hot, turn of all other radators to force fast full flow var a single radator, it will slowly remove all air from the radator.
(We have many very long pipes in our loft with “hightpoints” due to the ceiling not being 100% level…)
PS where are you buying the Jaga Strada and what discounts do you get? Do the DIY fans work out a lot cheaper than buying the version with fans?
