wiring a Lifebreath Clean Air Furnace


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Old 09-07-05, 05:39 PM
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wiring a Lifebreath Clean Air Furnace

Good Day,

This is my first time on this site and I'm looking for some technical help. I have installed this furnace and hooked up to my hot water supply which also supplies my basement(s) radiant heat as you can see in the photo. It works fine. However I now have to hook up the power to my furnace and somehow also send a signal to the main Glycol circulating pump so that when my thermostat calls for heat it turns on the furnace pump and the main circulating pump. I have attached the wiring diagram for my furnace. The radiant heat was not wired by myself. Any help would be gratefully appreciated.
Oops just noticed that I can't attach any photographs. Any ideas?

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Old 09-07-05, 06:01 PM
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Pix

If you can host them on (for example) Yahoo, & provide a link we can veiw the pictures & likely help with your wiring problem.
 
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Old 09-07-05, 07:00 PM
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furnace wiring

Here is the link - I think. http://photos.yahoo.com/twolakeview.[/URL]
 

Last edited by Grady; 09-07-05 at 07:17 PM. Reason: Correct link
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Old 09-07-05, 07:28 PM
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Wiring

Sorry, I couldn't read the wiring diagram.
 
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Old 09-11-05, 03:23 PM
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Sorry I was so long responding. I was trying to scan the wiring diagram but was unable to get it working. Took another digital photo and hope it is clearer than the last one. Let me know if you can read it. Thanks again!http://ca.pg.photos.yahoo.com/ph/two...bum?.dir=/ab39
 
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Old 09-11-05, 04:44 PM
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No help

Still can't read it. If you can post the make & model, maybe I can find the diagram online.
 
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Old 09-11-05, 05:10 PM
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Its a Lifebreath Clean Air Furnace Model CAF-U-L4A-36-P16 I believe it is Manufactured by Nutech Energy Systems Inc.
Thanks
 
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Old 09-13-05, 07:35 PM
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Wiring

I found the installation manual on the web & as soon as I can get enough time to download it with this snail's pace dial-up connection, I'll see what I can figure out.
 
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Old 09-14-05, 05:13 PM
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Finally Downloaded

Was finally able to download the manual. Now I have some questions:
(1) In the photo, I see 3 circ pumps. Is circulation thru the glycol pump from right to left?
(2) On the other two pumps is circulation from top to bottom?
(3) Do these zone pumps have internal flow checks?
(4) If you insulated the piping, is there any reason you could not run the glycol pump constantly?
(5) Since you have 2 radiant zones, I presume other parts of the house are to be heated via the air handler, correct?
 
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Old 09-18-05, 05:22 PM
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wiring diagram

I'm Back and glad to hear that you can finally acccess and read the diagram.
(1) The circulation is left to right, the glycol pump also turns on the hot water circulation pump.
(2) the 2 radiant heat pumps are top to bottom
(3) Yes the zones have have flow checks
(4) The owner of the house is reluctant to run the pump 24/7 as he only occupies the house on weekends (I live next door)
(5) Yes, heated air is for the main floor

Hope that helps

By the way my fishing has been lousy this year!

2lakeview
 
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Old 09-18-05, 08:37 PM
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Wiring

As I read & understand (?) the wiring diagram & sequence of operation of the furnace, when the thermostat calls for heat, the furnace pump will come on. Could you not power the glycol pump by using a current sensing relay clamped onto the blue wire of the furnace pump? This would provide closure of a circuit (either 120 or 24v depending on the current sensing relay chosen) to power the glycol pump directly or via a relay.
If the relay in the furnace is heavy enough, you could power the glycol pump directly from the same relay as the furnace pump.
Think this over & let me know.

Speaking of fishing, I had my best day of the year today.
 
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Old 09-19-05, 07:58 AM
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I understand that I can get a circuit to the glycol pump from the relay k6 however what happens when the radiant heat circuits call for the pump to start, will I have a confict? Where should the signal go: to the junction box or go to the relay attached next to the junction box? Is there a way to test this without putting power to the unit? As you can tell I'm getting more confused as I go along. I had envisioned an easy connection. Thanks for sticking with it.
Going out fishing now. I'd like to get a nice waleye for dinner.

2lakeview
 
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Old 09-19-05, 06:17 PM
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No conflict

There would be no conflict with just the radiant running but I'm not sure what would happen when both the radiant & the furnace zones called for heat.
Why use the furnace pump at all? You could install a pair of Tee's in the glycol loop & a full port zone valve to feed the furnace coil. You could use the end switch on the zone valve to trigger the glycol pump relay. Food for thought. If fish is brain food, maybe we both need more. LOL
 
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Old 09-20-05, 07:28 PM
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Another thought

How about using a multi-zone relay to activate the glycol pump (on a call for heat from any zone) & furnace pump only on a call from the hydro-air zone.
BTW, I don't like the fan coming on as soon as there is a call for heat. You will get "cold blow" until the coil gets hot. In hydro-air systems, I always use a strap-on aquastat to delay the fan until the discharge pipe from the coil reaches at least 160.
 
 

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