Heating Help

need help taco zvc 404 pump operation

@ June 15, 2011 3:56 PM in need help taco zvc 404 pump operation

replacing some old zone valve wiring and installing into a taco zvc-404 zone valve control. this will be a cold start operation. the zvc 404 has two end switches, i have used one to run to a beckett aquasmart control tt terminals to energize the boiler on a call for heat. how do i wire the pump which is a grundfos alpha, to the 404 control so that it energizes on a call for heat?????? please be specific, this would help greatly

thanks

k haynes 

hvac accredidation/training courses help please!!!!!!!

@ April 17, 2011 6:12 PM in hvac accredidation/training courses help please!!!!!!!

a little over three years ago i attended the nefi in watertown mass. i earned my oil burner technician certificate, and am now nora silver certified as i have been working in the field over three years. i want to further my education in the hvac field as i'm thinking about relocating, and the oil burner training is pretty much useless if someone is looking for ac technicians. who are the most recognized accrediting agencies in this field????? i want to attend a facility and earn a possible assoc degree but i want it to be from a legit school where my training will be recognized by the industry. could anyone give me some leads into the most recognized accred. agencies and some suggestions on a good tech school in maybe the nh or ma area?????would it be smarter to get a hvac cert or put in the 2 years and get the degree??? please help. i'm 42 years old, and due to the fantastic state of our economy, i want to better my education, so i'm not behind the counter when u order a coffee at dunkin doughnuts. 

proliphix internet based thermostats help

@ March 20, 2011 12:56 PM in proliphix internet based thermostats help

recently was at a customers home and they had purchased a proliphix imt 550 so they could remotely monitor their heating system,as its a second home. the heating system is just a basic airco hot air system,with an old style honeywell 8184g primary control,with a 2 wire thermostat wire.in the single stage wiring diagram it shows three wires rh,w,and g connected,will this thermo. work with this control???the therm side wiring showsthree connections rh,w1 and a common wire.i believe the common is to power the thermo.being that i have no exp. with these thermostats i figured i would post here and see if anyone has used one with this setup .i have included a file with the directions

cracked heat exchanger help

@ February 13, 2011 8:31 PM in cracked heat exchanger help

was wondering in everybodies experience , other than visually detecting it what are some sure signs of verifying without completely dismantling the furnace. i've heard a wandering draft and of course sooted vents windows etc. any other tricks i can learn???

thanks

noisy taco pumps??????

@ January 28, 2011 9:46 PM in New boiler and a few questions

want to know how to stop a noisy taco pump?????put on a grundfos!!!!!! if nothing else they are prettier!!! 

larger is better?????

@ January 28, 2011 9:40 PM in what size boiler would you use? Burnham MPO

i would want to use the larger boiler and slightly down-fire if needed.at least you would have the extra btu capacity if needed.what if they decided to add an indirect tank etc. in the future????

take out the monoflow tees

@ January 28, 2011 3:46 PM in cant get the radiator in basement hot

i use regular tees with a ball valve in the middle.works every time. why waste your money on those expensive monoflow tees anyway. 

????

@ January 28, 2011 8:56 AM in New boiler and a few questions

what kind of radiation do you have??????sounds like the system is air bound. i don't understand why you would hang the expansion tank in that position. i also don't see an air scoop or spirovent to scrub the air pockets out of the system.there is absolutely no reson why the boiler shouldn,t go past 120 deg. there is something wrong!!!!!get your contractors back out there.

john wood water heater gurgling sounds backflow problem help?????

@ January 27, 2011 12:01 PM in john wood water heater gurgling sounds backflow problem help?????

was servicing a new customers home today. they had concerns on a john wood oil fired hot water heater. when it runs and heats the water it has a gurgling,rushing noise very similar to an air bound boiler system. the cold water supply pipe felt hotter than the hot water out pipe.  upon looking at the piping arrangement i noticed that there was no vacuum relief valve installed on the heater . this heater is not on street pressure its running approx. 50 lbs of pressure at a pressurized  well tank its a stand alone heater, its not hooked to a boiler with a pump etc.  would it help to raise the tank pressure and install a vacuum relief valve such as a watts n-36 . does it also need some sort of check valve or would a vacuum relief valve prevent the siphoning. any help will be appreciated.  

emergency call charge?????

@ January 3, 2011 10:52 PM in emergency call charge?????

i have for the past three years been doing heating work in northern nh. i charge an hourly rate of time and materials when working. i have never charged a call out charge but recently have had a couple non emergency calls later at night that could have waited until morning. need some advice on a fair policy  to charge for emergencys so im not getting up at 2 am for non emergency work. any ideas??should it be after 8 until 5 am??? please help. what do you other contractors do?

thanks  

miller hot air problems

@ December 6, 2010 9:05 PM in miller hot air problems

recently got a bad nozzle in  miller hot air furnace. the furnace had run that way for a while it was full of soot. changed nozzle,cleaned out roof jack etc still have a positive draft over the fire.is there an easy way to clean out the flue passages without ripping the whole furnace apart? any help would be appreciated

acid flushing an indirect tank

@ November 16, 2010 7:48 AM in acid flushing an indirect tank

anyone have a good procedure to clean a non removable coil in an indirect tank?
my local supply house stocks cloroben de is this suitable? want to acid flush this not thermal shock it. let me know about procedures that have worked well for you. 

thanks

hot air furnace / heat exchanger repair flange????

@ September 10, 2010 4:41 PM in hot air furnace / heat exchanger repair flange????

was recently servicing a hot air furnace the stainless steel pipe that attaches to the flue pipe (this pipe is also welded to the heat exchanger) has holes rotted in it causing it to suck exhaust into the fan area and into the ductwork. is there a clamp on repair for this like two large clamps with metal to seal this area without repacing the heat exchanger 

1

@ August 26, 2010 5:06 PM in wiring help/ amtrol water tank opus/taco relay

yep

wiring help/ amtrol water tank opus/taco relay

@ August 26, 2010 3:42 PM in wiring help/ amtrol water tank opus/taco relay

i have recently installed a new boiler the zone control is a taco though the name on it is opus this control will zone either zone valves or circulators.i have three zones plus the water tank all plumbed with circulators.i have the end switch on the relay attached to tt on a honeywell 7224u set to cold start . everything seems fine except the water heater zone keeps calling for heat . all my other zones work fine nd correctly according to amtrols directions my thermostat wire is hooked to tt on the zone control which it is am i missing something or is it wired incorrectly the tank is model ch-41zct has a built in thermostat on top of the tank with a apillary tube thanks in advance the opus control looks exactly like a regular taco switching relay except it can be wired for circ or zone valves 

hot air register cap?????hot water

@ August 18, 2010 10:36 AM in hot air register cap?????hot water

Recently removed a hot air system and replaced with hot water baseboard as most
Of the floor registers don't operate (the vents dont close) do they make a blank cap to Cover these to stop unwanted heat radiation from floor to floor. Thanks in advance











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