Solo Plus Instructions 1-800-782-9927 Version 12-13
Tarm Biomass · 4 Britton Lane · Lyme, NH 03768
3.1.4 Plumbing and Mechanical
The boiler must be connected to a suitable
chimney.
Chimney requirements are discussed in
Section
3.2.
A dedicated supply of fresh
combustion air
should be provided near the boiler for efficient and safe
operation, but must not be directly connected to the boiler.
(See Section 3.2.1).
For the heating system piping, it is possible to use either copper or iron piping materials. The supply
and return pipe should be insulated to avoid heat loss. Included in
Section 6.5
are conceptual piping
diagrams showing the correct layout for a variety of situations. Tarm Biomass can provide additional
conceptual plumbing diagrams
A permanent pressurized domestic
water supply
must be provided with proper automatic filling and
pressure reduction valves.
Use of a suitable
antifreeze mix
is allowed, but will cause a loss in heat transfer efficiency.
If
water quality
is poor, water treatment additives should be considered. Boiler system water pH
should be 8.0-8.6.
A
thermostatic mixing valve,
set to open at 140-160 ºF (60-72 ºC), is required to temper return water
to prevent cold return water from reaching the boiler. This valve helps prevent boiler corrosion. Tarm
Biomass can provide this valve (part #
K4440A3
), at an additional cost
A
circulator
(Size and brand to be determined by the installer (not provided)) should be installed as
C3 per drawings suggested by Tarm Biomass.
An
aquastat
(Honeywell
L4008B
(provided)) must be installed to protect the boiler from over-
temperature conditions by energizing a chosen heating zone.
A
tankless hot water coil
is available for the Solo Plus, at an additional charge.
Tarm Biomass recommends the use of the
BLTCONTROL
(available through Tarm Biomass) when
burning the Solo Plus in conjunction with a back-up boiler and
thermal storage system
. The
BLTCONTROL
is a three position control that allows switching between wood only, wood with
automatic back up, or back up only, by controlling the operation of the back up (auxiliary boiler).
BLTCONTROL
takes input from a zone relay control and determines, based on thermal storage sys-
tem temperature, whether to pull heat from the
thermal storage system
or the back up auxiliary
boiler. The
BLTCONTROL
easily integrates the Solo Plus boiler and
thermal storage system
with
an existing fossil fuel heating system.
CAUTION
Any plastic or rubber tubing used with a Tarm Biomass boiler must have an
oxygen barrier
, or
boiler corrosion will occur. If radiant tubing without an oxygen barrier is installed, water in the
tubing part of the heating system must be separated from the boiler. Separation of system com-
ponents is typically done by using a heat exchanger. Use of radiant tubing without an oxygen
barrier will void the boiler warranty.
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Boiler Installation & Start-up > Plumbing and Mechanical
Page 11
