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damper

  1. HVAC
    Recently I've been having issues with my AC. First it was a leak in the line set and then it was the time delay module, back to back in two days. Now I noticed that my zone two seems to be working only if I turn off the thermostat on floor 1. I am wondering if its the damper or damper motor or...
  2. HVAC
    Happy New Year to all. I'm new here and looking for some great advice :smile: I 'm updating 2 side-by-side 5'x9' bathrooms and they don't have fans. The tub and shower are either side of the shared 5' wide wall. I don't like ducting fans through the roof - Canada winters can be so cold - so I...
  3. HVAC
    I have a Weil-McLain EG-45 SPDN Gas Pilot boiler for my house. I started to have problems about a year ago where the spill-switch would get stuck, causing the Vent Damper to stop working, therefore no heating until I would have to manually press the little button on the spill-switch to re-start...
  4. HVAC
    What are the plusses and minuses of butterfly and iris dampers?
  5. HVAC
    I'm trying to design an HRV ducting system and I had a few theoretical questions in regard to using a damper. I'd like to have two main trunks that come off the HRV: trunk A and trunk B. These two trunks will be pulling the air OUT of the rooms. Trunk A will serve a kitchen and two bathrooms...
  6. HVAC
    I've been diligently sealing up air leaks in the A/C duct work in our unfinished basement, using high quality heavy duty foil tape. I've sealed up everything I can get to. What I've now noticed is that most of the remaining leaking air is coming from the damper controls (I guess that's what...
  7. HVAC
    I live in a 3000 sq ft house and the builder put in only one a/c unit with a damper system. The master bedroom gets no a/c (or heat). I went in the attic and found that the master bedroom has its own duct. Everything looks brand new. No leaks at all. The damper system seems to be working...
  8. HVAC
    I have a 2-stroy house that I want to zone, upstairs & downstairs, because currently the whole house is one zone. I have quotes to have dampers put into each supply line (16 total, 8 on each floor, all 6" lines) from 2 different contractors. One guy wants to use Arzel pnuematic dampers and...
  9. HVAC
    Please help me make a list of all the ways to do this: I want to control a damper on my system based on pressure in ductwork. Simple "on" and "off" is fine if the trigger pressure is adjustable. Background: A 2-stage AC system, where I want to consider a fresh air vent to the return plenum...
  10. HVAC
    I've an OLD Bryant 397EAW048125. I've had to replace the gas control module and the fan relay. Now, my 997E vent damper switch is intermittant. Well, I've hooked up a temporary switch so the damper'll start the furnace... but I'd like to just disable the damper... leave it open. It has a 4...
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