INSTALLATION

Primary flow and return pipes should be 28mm diameter. The cylinder should be installed at a higher level than the appliance, and as close to it as possible (the higher the cylinder the faster the circulation). The flow and return pipes should not be longer than 20ft each. Pipe runs should rise continually from the boiler to the cylinder.

A radiator of approximately 25 sq.ft. should be connected into the primary circuit, if installed in the bathroom it provides a means of drying towels in the summer.

Safety Vent Circuit

This circuit consists of a cold feed pipe, expansion pipe, and expansion tank. The possibility that water may boil can never be completely ruled out, and it is therefore vital to ensure that cold water can be supplied to the boiler and steam vented from it at all times.

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 can not be held responsible for chimney or installation.

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?

 

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Aarrow Ecoburn Wood & Multifuel Stoves