Finally Posting Pics of Garn Install and Heating System Dec. 2013

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brad068

Feeling the Heat
Nov 20, 2007
445
Central Wisconsin
photo 8.JPG House furnace w/ switching relay, ETC, diverter valve, and cube relay all tied together with TT and aquastat.

photo 3.JPG House manifold. Plumbed for in floor, domestic HW, forced air, and spare port.

photo 9.JPG Another angle

photo C.jpg Shop bathroom manifold. Plumbed for in floor and domestic HW

photo 7.JPG Back of Garn

photo 6.JPG Supply/Return from Garn 2" SCH 40 going to a 10' x 20" x 50 plate HX w/ 2.5" ports.
I pressurized the load side of the HX to distribute to all other manifolds.

photo 5.JPG Primary load side loop. 2" SCH 40 w/ primary circ. feeding 2 secondary circs. All pressurized.

photo 4.JPG Another angle

photo A.jpg The Holy Grail.... GARN


Hopefully this goes thru. First time I have posted in quite awhile.
 
Looks awesome. What is your lowest usable water temp for your forced air zone?
I have to think...@ 135F the aquastat activates the cube relay which diverts the TT signal back to the gas burner. In the same instance the diverter valve is closing too controlled by the switching relay which cools off the coil and the ETC sense that and shuts down the fan.

I'll have to pull out the wiring schematics I drew up.
 
I have to think...@ 135F the aquastat activates the cube relay which diverts the TT signal back to the gas burner. In the same instance the diverter valve is closing too controlled by the switching relay which cools off the coil and the ETC sense that and shuts down the fan.

I'll have to pull out the wiring schematics I drew up.
At 135* how often do you have to fire the garn to maintain temperature?
 
I know this an old post but I'm currently installing a Garn 2000 and I'm looking for plumbing ideas.

@ Brad068 how are things working for you?

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