System filled with Glycol

I pumped 30% glycol into each loop with the Axiom MF200 system feeder. It was simple to do. The volume of liquid in one loop in the system was at least twice what I expected so I ran out and had to buy extra.

 

Per day cost

Nov 1 - I have been turning the thermostat down bit by bit to find the lowest acceptable temperature because it has been warmer than needed. Today it is set down to 12 deg C (53.6 F) but it does not feel that cold. I can see this is going to get expensive because - winter is coming...

  

Heating system is operational on water

On Saturday Oct 18 2014 the system was turned on using water (no Glycol yet)
and it is heating the garage.
Boiler is set at 103 deg F.
Thermostat is set at 16 deg C (61 deg F) but it feels toasty warm in here.
 The Grundfoss pump is on low and putting about 2.3 gpm around the primary loop.
The Taco pump is on delta T of 10 deg C.
The pressure difference over the boiler is about 4 psi.
The pressure difference over the loops is also about 4 psi.
  Static pressure is set at 12 psi.

kWH meter showing the 1st 2 kWH consumed. 

Cost here is 11.931 cents per kWH.

System Assembly

Piping installed

  Changed out a couple of leaking copper unions for brass ones and took out some unistrut clamps  that interfered with aligning the unions.

Here are the electrical tools and materials to feed power to the two pumps 

and the Axiom system feeder.

 The square box feeds the two pumps and the system feeder plugs into the receptacle. 

The switch controls the Taco pump. The Grundfos is off of the thermostat.

 Here is the system completed with electrical, ready to be filled.

 The Taco sensors will go on later.