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  1. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    fitter30, I do not have globe valve but I do have Ball Valve installed. What purpose I will need this valve ? Are you suggesting I can close valve partially to balance ?
  2. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    Sorry, I answered it in previous post. This was duplicate post
  3. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    @fitter30 - To be honest I am to point, I have to do with trial and error method with my system. I may end up wasting some money for pump but will see. My existing pump is Taco 0014 which has 32 max GPM and 22 FT Max head. I had to select something which is in between 007 and 0014. I thought...
  4. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    I have ordered below pump, I will replace it and see if that helps. It has three mode, will try all three mode and see if that helps...
  5. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    fitter30, Based on what I have read about Delta-T pump is...it is based on temperature differential 0-50 F. It changes speed based on temp. on supply and return side of the pipe which is great feature but what I need is similar application which changes the speed based on water pressure not the...
  6. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    John, You are correct I need Delta-P pump but I am not able to find any models of Delta-P pump in my search. Are taco pumps with IFC (Internal Flow Controls) are Delta-P pump and do they adjust speed based on water flow ? Can IFC pump be used for system pump in boiler ?
  7. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    As far as I can tell these are Delta-T pump not the Delta-P pump. Do you have list of Delta-P pump ? Is all IFC equipped pumps are delta-p pumps ?
  8. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    I have below exact check valve. I believe it is swing valve. Size of pipe coming out from boiler is 1 1/4" including check valve. https://www.ferguson.com/product/matco-norca-521-1-14-in-brass-threaded-check-valve-m521t06/_/R-4342068 Check valve located on Supply side of pipe right out of...
  9. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    John Sorry, I did not mention that earlier. Also, fix what I tried it quite opposite which was recommended by others. There is two spring comes with honeywell valve and others have recommended to remove one of the spring from valve so it loses the strengh when it closes the valve and does not...
  10. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    1. Yes, zone valve direction shown on valve itself is same as water flow 2. Check valve (1) is installed as shown in last piping diagram I posted at supply line before Primary Circulator. It is regular inline check valve. I do not think primary loop is causing any issue. It seems issue is...
  11. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    I have tried that option but it did not resolve issue and it is causing given zone over heating since it is not fully closing zone due to one of the spring is removed. What happens when water is flowing in loop for one zone and from source of water is closed by zone valve and at the end system...
  12. lordofthering

    WeilMclain Ultra 155 - Banging Noise when Honeywell Zone valve is closed.

    Hi, Myself have replaced my existing old Wei Mclain UHE Two boiler/Indirect hot water system with new Two Weil-Mclain Ultra 155 which controls 13 baseboard Zones and 1 Indirect Hot water Heater zone using LEAD and SLAVE setup. LEAD is primary source and SLAVE will kick off if LEAD is running...
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