Consumer Reviews of Heat Transfer Products boilers

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Date created: 2012-01-28 Name: Homer
Location: Nevada

Satisfaction Rating:
Review:
"Sheila -Revisited"
Sheila--Milford, PA--When you get the Vision 1 manual, pay close attention to the ots connections to the control board plug. Make sure that the Lt. Green ots wires are put into the correct holes on the plug and that the molex connectors are pushed into the plug in the right orientation (black marks on the molex connector facing up). Turn off the power to the boiler and open the cabinet and tug the ots wires outward from the plug to make sure that they are seated securely on the pins on the control board. I'm big on this electrical power polarity issue. Make sure your polarity is correct. See earlier posts. Do all these things. I would prefer using the Vision 1 ots as it saves on energy costs. If every thing suggested is by the book, look for a faulty control board. It is probably under warranty so be pronto about it.

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Date created: 2012-01-28 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"Alan Z. --Revisited"
Alan Z.-Anchorage, ak--- Electrical Polarity (the white wire is connected to the silver screw and the black wire is connected to the brass screw on the receptacle on your wall outlet and the connection to the boiler's white and black wires as well a the green wire is-- important. Service persons take for granted that the 110 volt wiring is correct, so they don't check it. Improper polarity can cause problems with the control board. Read earlier posts on polarity.

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Date created: 2012-01-28 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"Gary Wandschneider--Sheila--Alan Z."
Gary Wandschneider--Heber UT---Gary, you can call Heat Transfer Products and talk to the Tech there about your problems. I can't imagine spending $1000 each year replacing parts, etc. and not having your boilers working properly. I doesn't make sense to me. You have an installation problem. Either you hire someone who's knowledgeable or you figure it out on your own. No matter which company's boiler you install if you have an installation error, that company's boiler is going to be affected. READ-"Modern Hydronic Heating" by John Siegenthaler, pe (Plumbing Engineer) and check your system installation against the book. ps- ignore the math unless you have had Advanced Algebra and Trig. Installing a low tech boiler is more forgiving if there are installation errors, a high tech boiler like the Munchkin isn'T.---- Sheila-Milford, PA---Sheila, first, replacing 3 Outdoor Temperature Sensors (ots) should tell you that your problem isn't the sensor. An ots is a temperature variable resistor that changes resistance with a change in temp. The ots should be mounted where it truly measures the outdoor temp., not in direct sunlight, not near a heat source which may effect the reading. Secondly, there is limit as to how long the connection wire from the boiler to the ots is, don't exceed this length. Wire has resistance which adds to the ots resistance. The connections should be good and tight at the boiler and ots. Make sure that the ots connection wire is the proper gauge 18 ga minimum and the wire leads are not grounded to each other. The ots establishes a Reset curve for the control board. The ots tell the board that the outdoor temp is such and such, so that the boiler only heat water up to a certain temp. necessary to overcome the loss of heat through the building envelope, thus saving money on heating costs. YES-you can disconnect it if you choose to, you just lose the reset function. In the Vision 1 manual is a synopsis of the Vision 1 function. There are 4 parameters that can be adjusted for the reset curve. Download the manual at HTProducts.com. Disconnect the ots at the boiler not the sensor.----Alan Z.-Anchorage, ak---$400 that seems like a good deal to me. This is an honest company that want to satisfy you. This is a temperature issue. You're pulling really cold air from outside into the boiler and it is effecting the expansion of the metal component in the boiler compartment. I don't think it is the control board or the blower. Look to the harness between the two. I would replace the harness first. Do the least expensive thing first. Check for exhaust reversion, any moisture or pitting of the aluminum components in the boiler, make sure the the intake air to the boiler is not near a dryer vent, etc. Read these posts about venting and harnesses. I don't know what weird sound like. Go though your boiler commissioning again-Set the co on the gas valve and check the supply gas pressure, pipe sizing, intake and exhaust venting, etc.

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Date created: 2012-01-25 Name: Homer
Location: Nevada

Satisfaction Rating:
Review:
"Mea Culpa, Mea Culpa, Mea Culpa"
Homer, you blew it. Please ignore my suggestion to pump into the expansion tank. What I meant to say and didn't was that you never-ever pump into an expansion tank. Funny things happen in the system when you do that, like pressure differences in the system that can drop to near 0 psi. So, you always pump away from an expansion tank. The tank connection should always be on the inlet side of the pump.--SHANE--My reasoning was this--Although the static pressure (when the boiler is not running) in the system is 12psi at all points in the system. If the pump is on the supply side nipple, pumping away from the boiler and the pressure switch and, also, the pump is pumping into the expansion tank, the dynamic pressure (the pressure created by the pump when the system is running)can drop system pressure in parts of the heating loop to less than 10 psi causing a pr0 fault code. If this pressure drop is marginal, near 10 psi at the pressure switch, you could have intermittent pr0 fault codes. This is especially probable if the pump is mismatched (too powerful). These are my random thoughts.

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Date created: 2012-01-24 Name: Homer
Location: Nevada

Satisfaction Rating:
Review:
"Shane Kairalla Revisited"
The easy way to tell if it is the pressure switch is to get some jumper cables at Radio Shack and jump the switch terminals while the wiring harness is connect to the switch. Do this at the switch when you have a pr0 fault code. If the boiler turns on it is either one of two things: low water in the system or faulty pressure switch. If the boiler doesn't turn on when you do this it is either one of two things: the harness is lacking continuity between the control board and switch or a faulty 925 control board. Replace with a 926 control board if replacement is necessary. Always do the cheapest and easiest thing first. If you have low water pressure in the system drain your expansion tank down and inflate the tank to 15 psi with air through the Schrader valve on the bottom of the tank under the red or blue cap. On a two story house the system pressure should be between 12-15 psi.---Lord help me, but I got to mention it. The boiler pump should be pumping into the 1 1/4" return brass nipple on the boiler and not pumping away from the supply brass nipple on the boiler. The supply is the 1 1/4" brass nipple that is closest to you when you are standing in front of the boiler. Lastly, always place the expansion tank connection to the system after the pump so that you pump into the expansion tank and not away from the expansion tank. Gasp, I done. pump

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Date created: 2012-01-17 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"Shannon Revisited"
Shannon, When you cleaned the hx, did you replace the burner tube gasket? (Read my earlier posts on f09) There are four bolts that hold the burner tube to the boiler plate inside the hx. Always use a new burner tube gasket Part # 7250p-070 when you clean the hx. I always use a 1/4" drive socket wrench and tighten the four bolts up good-n-tite. Shannon, I'm not supposed to tell you this, so I have to swear you to secrecy. So don't tell anyone. The number for Heat Transfer Products is 1-800-323-9651. Now, remember don't tell anyone.

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Date created: 2012-01-16 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"Addendum for Shannon"
I don't know know what the size of the boiler that you have or the gas valve ( Honeywell of Dungs) on it. But if it is an 80m with a Honeywell gas valve, do this. On the rear of the Honeywell gas valve is a brass projection about the diameter of a pencil facing the rear of the boiler cabinet. On the 80m this brass vent almost touches the cabinet. If the hx shifts this vent can be blocked by the cabinet surface interfering with the functioning of the gas valve. If the brass vent is touching the cabinet back, drill a 3/8" hole in the cabinet plastic back so that the brass vent is not touching the cabinet and has free access to air. You need to put a pressure gauge on the input port of the gas valve and monitor the gauge while operating the boiler. The gauge should read 11" of water column with out the boiler running and should maintain that pressure when it is running. A decrease in pressure while the boiler is running would indicate a blockage in the gas supply. Your problem can be looked at this way: A gas supply problem--A temperature problem. As the temperature in the boiler cabinet increases, metals expand. Is your wiring harnesses making good contact? I am betting on the gas supply. Hope this helps.

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Date created: 2012-01-16 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"Once Again The Munchkin Gets The Blame!"
Shannon, Levering, Michigan---Well, it is a good thing that you mentioned propane. First, Read the posts about f09 codes in this forum. Shannon, Shannon, Shannon-This is your problem, I think. Does your boiler work fine in the summer and fail in the winter? Just when you need heat, Whammo, f09 or f10 messes up your day or nite. Your Propane Regulator at the tank or house has moisture in it and it is freezing up, limiting the amount of gas to the boiler. Warm the regulators and see if your problems disappear. I hope that you report back with a (very satisfied) check mark. read the posts, Folks.

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Date created: 2012-01-04 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"NC Fault Code"
Stephan Wilkinson--Cornwall-on-Hudson,NY nc Fault Code means this: Improper neutral (white wire) connection to the boiler. Make sure that the ground (green wire) hasn't any stray current (ground fault) on it. You should check the wiring on the boiler junction box and wall cord that plugs into the wall outlet for proper polarity. You can buy a cheap wall outlet tester at Home Depot and plug it in and it will tell you if the outlet box is wired correctly (polarity wise). On the cord, one side is ribbed and one side is smooth. The ribbed side is the white wire and the smooth side of the cord is the black wire. The green wire is ground. The ribbed side should be connected to the white wires in the boilers junction box and the smooth side should be connected to the black wires in the boiler junction box.

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Date created: 2011-12-30 Name: Homer
Location: Nevada
Years owned: 7

Satisfaction Rating:
Review:
"Happy New Year--A rockin'-n-rollin'"
Jesse, barton, VT---Contenders are good boilers, an improvement on the Munchkin. So your boiler's a rockin'-n-rollin'. First, I believe that you have flashing in the hx (heat exchanger). Flashing occurs when the water pumped through the hx is too slow. (Gallons per minute). The water boils in the hx and vapors form and then collapse. It shakes the boiler. Not good! A 140m (140,000 btu) Munchkin should have 14 gpm pumping through the hx. 1gal for every 10,000 btu. To have such a high flow rate it is necessary to have a boiler loop and a heating loop (two pumps minimum) with the correct piping sized for flow. The pumps must be sized for system pressure loss (head) and flow, too. Pumps that are too small aren't going to get the job done. I have also seen this happen, but not as bad, when the gas valve is not correctly adjusted and also a blower problem. Second, Jesse, hire some one who knows what they're doing An F05 will shake the boiler (read earlier posts)and check the voltage at the pump (110V) when the boiler is running and acting up. Is the boiler pump turning? You need someone who's knowledgeable in Hydronics. It is a specialized field with a lot of training. So--do your guys qualify? Hope thing work out for you. Happy New Year, one and all!

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