Solo Innova Instructions 1-800-782-9927 Version 01-18
Tarm Biomass · 4 Britton Lane · Lyme, NH 03768
3.4.4 Pipe Connections – Choice of Material
A copper/steel mixture can be used for the heating side. Copper followed by galvanized piping (in the
direction of the water flow) should be avoided for hot water for reasons of corrosion protection. How-
ever, galvanized cold water piping and copper piping can be used for hot water. The supply and return
flows must be carefully insulated to avoid heat loss.
3.4.5 Immersion Tubes and Wells
Remember to install the immersion tube provided in the corresponding well. (Immersion tubes are
supplied with the boiler regulator.)
Remember to plug wells which are not used in the chosen form
of installation.
3.4.6 Expansion Tank
The size of the expansion tank is determined by the total water content of the heating system.
3.4.7 Pump Size
The size of the circulation pump is determined by the size of the system and the pipe dimensions.
3.4.8 Installing the 339N Probe Thermometer
The 339N Probe Thermometer (Part #
339N
) is to be installed just downstream of the boiler’s flue
collar. Drill a ¼” hole in the side of the pipe and insert the probe all the way in (see
Fig. 3.5
). This
thermometer indicates of how well the wood is burning and when to clean the heat exchange tubes. If
burning dry wood that is split, it should achieve temperatures of 350-450 ºF (176-232 ºC) or more on
the probe thermometer.
If operation of the boiler is not achieving temperatures this high, check the following things:
1. Does the chimney have proper draft (see
Section 3.2
)?
2. Is there proper make-up air into the room (see
Section 3.2.1
)?
3. Are the vanes on the draft fan clean and not filled with ash or dust (see
Section 4.11.4
)?
4. Are the primary air channels open (see
Section 4.11.6
).
5. Is the wood dry (<20%) and split to the proper size?
6. What is the condition of the firebox ceramics?
In most instances, low stack temperatures are an indication that the wood is not dry.
If boiler operations have been producing consistent temperatures and the flue temperature has been
creeping upward, this is an indication that it is time to clean the heat exchange tubes by brushing.
Boiler Installation & Start-up > Connections to the Boiler
Page 28
Fig. 3.5 339N Thermometer Installed
