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HydroAirJoe

HydroAirJoe

Joined on November 26, 2007

Last Post on September 1, 2010

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Recent Posts

short cycle

@ September 1, 2010 10:28 PM in boiler is firing when there is no call for heat or hot water

I have this issue but it only happens 4 times a day.  Found out it was  a built in feature of the airhandler(Firstco).  It wants to circulate the water 4 times a day at 30 second intervals.  This is fine  if the airhandler directly controls a circ pump, but in my application the airhandler controls zones valves and the zone valves end switch connect to the boliers aquasat via TT terminas which will fire up the boiler for 30 seconds.  I was told by Firstco this is a law and the reason for this is because the air hanlder can be in a potable water loop and the idea is to not have stagnat the water in the heating coil.

..willing to help out here

@ February 19, 2010 6:55 PM in Are things getting worse? OT

Ok,
I want to help out here.  I'm tired looking at the crappy piping on my 10 year old bolier system.  The circ is on the return, and after reading Dan's book, I've want to change this along with some other changes (i.e. get ride of the tankless coil). And I'f I really like you, may even spring for a new more modern bolier to replace the WM GTO-4 (even though it;s a good old school bolier).  Willing to pay for knowldege and qulaity work since I appreciate that since I am an EE by trade.  Any suggestipn for farifield county ct?

thxs
HAJ

Question about TrolATemp Thermostat

@ October 21, 2009 10:22 AM in Question about TrolATemp Thermostat

I have an TrolATemp zone control panel circa 1999 which controls the zoning on my hydro-air system.  Here is a link to the wiring diagram ....

http://www.hvacmechanic.com/forums/resservice/messages/28847.htm

I have a question about the Slave thermostats on this system (TrolAtemp round).  They are 3 wires (R,W.Y) with no fan or heat/AC selection switches.  What told this thermostat to go into either heat or AC mode?  Were singles set via the R,W or Y wires to the subbase  which has switching logic in it to go into the appropriate mode based on what mode the master stat was in (Master Stat uses the B and O wires for this).  I'm also assuming I can replace these 3 wire slaves with a digital programmable, but I'll have to select the correct mode to match what the master stat is in.   It would be nice if there was actually a programmable model out there that could do this automatically like the existing  slaves.

@ March 10, 2009 10:37 PM in IntelliCon-HW+

I have a service contract with my heating oil supplier and they will install the Beckett Heat Manager for free provided I remain a customer. If I leave the company before 2 years after installation, I am liable for $600.

@ November 11, 2008 9:08 PM in CPH settings for Hydroair System

On theromostats were you can set the CPH settings, what would you set it for a hydroair. Usally the stat defaults are oil/gas furanace 6, and for HW baseboard 3. thxs Joe

@ March 5, 2008 8:42 PM in cold rooms after adding insulation

I would think the issue here is the 2 bedrooms are not adequately insulated. You button up the room where the stat is, but heat is still escaping in the bedrooms.

@ February 9, 2008 12:56 AM in DHW Bolier Coil Question

Never mind, I just realized it operates within the low limit and adj low limit range when there is no call for heat. During no call for heat: If my low is set at 160, my adj low is set at 10, so when the temp drops below 150, the burner fires until the temp goes back to 160, correct?

@ February 8, 2008 11:26 PM in DHW Bolier Coil Question

Have a WM bolier with DHW coil, DHW storage tank, HW 7224U Aquastat. My question is, when there is a demand for DHW, what will trigger the burner to fire? I do not see any control in the aquatstat for DHW, just for heating (hi-low-diff). thxs

@ December 7, 2007 11:57 PM in Hydro-Air Problem

Could be a simple problem with your thermostat. Does your thermostat have a e-f (pich F for fuel) switch or if it's a programmable thermostat, there is usally a setting wich is fan is turned on when a call for heat is made or furance controls fan operation. Pick the latter. I had the same problem. I have 2 different types of airhandlers on my Hydro-Air system and they both have a 45 second delay before they turn the fan on. When the stat is satisfied, they have an addtional 20 second delay before they turn off the fan. Also you are always going to get a cold blast from the supply when the fan first kicks in due to the cold air in the ducts. Varibale speed airhandlers will reduce this problem.

@ December 5, 2007 5:04 PM in L7224U Aquastat Question

Thxs Chas. That language is more confusing than any legal document I ever read.

@ December 4, 2007 10:11 PM in L7224U Aquastat Question

Just had my defective L8124 Aquastat replaced with the L7224U. This is on a 3 zone Hydro-Air System with DHW coil (with Storage Tank), WM Boiler. Set the Stat to 180 Hi 10 hi diff 160 Low 10 low diff. Now if I read the instructions correctly (6 hourse latter)... "setting the Low Limit less than the High Differential below the high limit is not allowed as improper circulator and zone control functions could result". This is not a valid setting was the Aquastat suppose to allow me to do this? The way the instructions read, it was not suppose to. Also with the L8124 the variable diff for the low worked differently then the L7224U. With the L8124 If my low limit was set at 160 and my variable diff set at 20, assuing no call for heat, when the bolier temp droped down to 150, the burner would kick in and heat the water up to 170. With the L7224u under the same conditions and assuming a 10 degree low limit diff, when the temp drops to 150, it will turn the burner on until the temp climbs back to 160. There is no notion of a varibale differential working with the fixed diff.

@ December 1, 2007 10:53 AM in Aquastat or Bolier Temperature Gague Problem

Thanks. I'm a little concerned since on my hydro air system the air handlers are rated for 180 max. Since the Aquastat is covered under my bolier maint contract I'll probably just call the oil company that services the bolier.

@ December 1, 2007 10:04 AM in Aquastat or Bolier Temperature Gague Problem

What is the best method to determine if you have an inaccurate boiler temperature gauge and/or a defective Aquastat? My bolier will cycle on for a call to heat even when the bolier temp gague says 195 and the Aquastat hi - low setting is 180 and 160 with 20 degree diff. thxs

@ November 28, 2007 10:02 PM in Programmable Thermostat ad High Steam Bills

Yes. The default setting, forced hot air means the stat will call for heat up to 6 times/hour. For steam, this should only be 1/hour.

@ November 28, 2007 10:25 AM in Source for Anode Rod for Aero Hot Water Storage Tank

My 6 year old home was built with a WMC Boiler and a Aero hot water storage tank (fed by the DHW coil in the boiler). I believe this system is refered to as a Aqua Booster system. So I happen to read the maintainence label on the Aero and it said the Anod road should of been replaced by now. My question: Aero was purchased by www.bradfordwhite.com/ so with that said, is there a source (online) where I can purchase an anode rod for this tank? Also I need to add, this tank is in a 4 foot high crawl, so I'll need an articulating rod to avoid cutting plumbing connections to install the replacement rod.

@ November 27, 2007 5:33 PM in Cycles/Hour Setting for Honeywell Thermostat for Hydro-Air

Thxs The 2 different brand of Air Handlers installed (did an addition last year), ADP and Firstco both delay approx 45 seconds before turning on the airhandler fan.

Cycles/Hr Setting for Honeywell Thermo Hydro-Air System

@ November 27, 2007 11:48 AM in Cycles/Hour Setting for Honeywell Thermostat for Hydro-Air

Wondering what is the best cycle/hour setting to use on a hydro air system. My System consist of a Weil-McClain bolier and ADP airhandler(s). The Honeywell options are for forced hot air (6cycls/hr) and hot water (3cycles/hr).