Caleffi 280 Thermostatic Mixing Valve — Heating Help: The Wall
V3, V4, and V5 are isolation valves and also serve as labels for my explanation. They are of course open for the Caleffi valve to function. All these valves are full-port ball valves. Normal …
CALEFFI Z-one Relay Multi-Zone Valve Control ZVR10X
Jan 4, 2025 · There are no fans on the boiler. The ZVR10X Caleffi control, controls the WB pump. When the boiler gets hot (140 degrees) a aquastat sends power to the Caleffi control. The …
Caleffi Discal Dirt Mag vs. Spirovent & Adey Magnaclean
As for the air eliminators I only recommend these Caleffi Discal Resideo (Honeywell) Supervent Webstone H-7x00 I stopped selling Spirovents a while back in lieu of the above options …
Caleffi Troubleshooting — Heating Help: The Wall
Caleffi now offers a low current draw thermal actuator also, 6 per 40VA transformer are allowed. The trade-off is a slower opening time (lower wattage actuator) Let me know if you need more …
Deciding on a new switching relay (Taco vs Caleffi)
Taco and Caleffi really seem to be on par with each other feature-wise. Even if the older Taco SR506-EXP didn't have any dip switches but the newer SR506-EXP-4 does . 0
Repair of 668S1 Caleffi manifold — Heating Help: The Wall
Hi again, folks, I adjusted the flow on some of the ports on my caleffi 668S1 manifold and a couple of the ports started leaking from the flow-meter side, either between the plastic flow meter and …
Caleffi Discal not purging air? — Heating Help: The Wall
My hydronic baseboard heating system has a Caleffi Discal for air separation (see image below). The overall system operates nicely, at 20 psi, but I am hearing significant air noise from the …
Caleffi manifolds EDIT: When you don't know what you don't know :)
Apr 23, 2025 · The Caleffi manifolds with the indented sections for the tube to cross over, will fit in a 2X4 wall. I have seen them installed in ceilings, between floor joists for example. Bob "hot …
Questions about Caleffi manifold — Heating Help: The Wall
You can use either the Caleffi cap or a regular fitting with a PEX cap or plug. As long as there is a good air seal on the fitting that holds pressure. As far as air pressure testing, based on the …
Placement of expasion tank on Caleffi Hydro-Separator
Caleffi Hydro Separator Rocky, The smaller Caleffi hydro separators (1", 1-1/4" & 1-1/2")have always had a port in the mixing chamber for a temperature probe. Over the years, Caleffi has …