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16 Acorn Multifuel Stoves
INSTALLATION INSTRUCTIONS
The expansion tank should have a capacity of at
least 7 % of the system's water capacity. The cold
water feed pipe should be at least 22mm diameter.
There must not be any shut off valves in the circuit.
Pipes should be run to avoid air locks. A spring
safety valve should be fitted to the expansion pipe
close to the boiler.
It is often possible, and is good practice, to utilise
the primary flow and return as part of the safety
circuit. The ball valve should have a copper ball.
The overflow pipe from the expansion tank should
be 28mm diameter copper. Pipes in unheated
spaces must be lagged.
FINAL CHECK
Before handing over the installation to the
customer it is strongly recommended that the
appliance is lit and the functioning of the chimney,
hot water and heating system is checked.
A checklist (Pre-lighting Checks) appears in the
Operating Instructions, but in addition to this the
installer should:
•Operate the heating system and set the
pump head.
•Balance the radiators.
•Re-vent and ensure no air locks.
•Check the circulation round the primary
system and the heat leak radiator,
particularly when the pump is running, to
ensure circulation is not reversed.
•Be sure that the chimney is operating and
that ALL smoke and fumes are vented to
the atmosphere through the chimney
terminal.
•Check all joints and seals.
•Clean the outside of the appliance to
prevent any stains becoming burnt on.
•Check the flue draught which should read
1 - 2mm, or 0.1 - 0.2mbar.
The following details must
be checked and
completed in full by the installer at the time of
installation. Please answer all questions as fully as
possible. Aarrow Fires Ltd can not be held
responsible for chimney or installation.
AIR INLET CONTROLS
The Acorn multifuel stoves have two air inlets:
•The air wash system (so called because its
pre-heated high speed air washes across the inner
face of the door glass, keeping it clear), which
provides over draught, and
•The oval cover; the primary air inlet
providing under draught to the base of the fire
chamber through control on the bottom of the
stove door.
PRIMARY AIR FOR MULTIFUEL
Air enters the appliance through the control on the
bottom of the fire door. The Aarrow Acorn has a
single control knob which slides left to right.
Sliding the knob to the right will increase the
amount of air intake to the stove. To decrease push
knob to the left.
AIRWASH SYSTEM
The air wash has an internal sliding plate with slots,
housed in a cover plate, and is located above the fire
door. Sliding the control knob to the right as far as it
will go achieves the fully open position. Sliding it to
the left will shut off the air inlet slots see page 17.
HOT WATER SYSTEMS
Is the boiler cross-flowed? YES / NO
Are the pipes correctly sized? YES / NO
What is the calculated output
required to heat the system?
Is a heat leak fitted? YES / NO
What is the return water temperature?
Is the pump thermostatically
controlled by a pipe stat? YES / NO
What is the height and distance of the
hot water tank above the stove?