Solo Plus Instructions 1-800-782-9927 Version 12-13
Tarm Biomass · 4 Britton Lane · Lyme, NH 03768
4.2 Items to Check Before Using
1. Check the heating system water pressure before using the system. NOTE: Water may not be
added to the boiler while it is running.
2. Ensure that the chimney connector pipe is connected to the chimney and that the chimney is
free of obstructions
3. Ensure that all circulators are connected and operational.
4. Turn on the main electrical service switch.
5. Open any valves that may have been closed temporarily during set-up.
6. The transport protectors for the ceramic bricks are made of wood and will quickly burn. Do
not try to remove them.
7. Check the Operating Thermostat for proper setting. The stop on the underside of the knob
should be on the left hand side of the stop screw. The knob should be resting against stop
screw.
8. Confirm that the setting on the Honeywell L4008B (overheat aquastat) is set to 200 °F
(94 °C).
9.
Confirm correct operation of the bypass damper (Removal of top cover and cleanout
cover is necessary).
Boiler Operation, Maintenance, and Service > Control Panel Orientation
Page 36
The fan switches off automatically if the boiler has burned out
and the boiler/flue gas temperature falls.
In units with a thermal storage tank, the fan switches off when
the temperature at the sensor in the flue gas has reached 90 °C
(194 ºF).
If the temperature at the sensor falls below 90 °C (194 ºF) the
reset switch
(N)
must be pressed to restart combustion in the
boiler.
The Lo-Limit Thermostat switches off the fan when the wood
has burned out. It is set to 60 °C (140 ºF) if there is no thermal
storage tank and 90 ºC (194 ºF) if there is a thermal storage tank.
(N) Reset Switch
(P) Lo-Limit Thermostat
NOTE
Please be advised that simply lifting the bypass rod and pushing it inward will not completely
close and lock the bypass damper. You may hear the clang sound of the bypass damper hitting
the bypass door opening, but that does not guarantee the bypass door is closed fully and locked.
You must, after lifting and pushing forward on the bypass rod, lift the rod again and push in-
ward against the tension of the spring and downward on the rod, locking the bypass mecha-
nism. Hard inward pressure against the spring tension may be required. If you do not feel as
though you are compressing a spring, you have not lifted the bypass rod before pressing inward
a second time. The bypass damper must be fully locked closed during normal operation.
