Advance Appliance SFUTS 250 Instrukcja instalacji i obsługi - Strona 6
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Note: In the above case the wood burner must have a quench pipe system to protect against overheating
INSTALLATION
Ensure the unit is installed on a flat surface and that all tappings are accessible for future
maintenance. Make sure the floor will support the full weight of the unit.
The system must be inhibited with a suitable proprietary brand taking account of the store
volume. If vented the feed and expansion tank must be at the highest point in the system. A metal
feed and expansion tank is preferred.
An expansion vessel of suitable capacity must be installed in sealed systems taking into account
the total volume of the heating circuit and thermal store (see page 8).
Install a proprietry filling loop system with flexible hose, isolation valve, 3 bar relief valve,
expansion vessel and pressure guage. Fill to 1 bar cold. The filling loop should be installed to
prevent back-siphonage.
The relief valve and discharge arrangement is fitted with the thermal safety valve in sealed heating
systems. This is a mechanical device (non-electrical) which opens at 97°C and draws cold water
through the hot water coil to dissipate heat in the store. It runs via a tun dish which should be
connected via 28mm pipe to a safe low level discharge point, follow G3 advice here. The water
may drip from the discharge pipe of the pressure-relief device and this pipe must be left open to
the atmosphere. The pressure-relief device is to be operated regularly to remove lime deposits and
to verify that it is not blocked.
A discharge pipe connected to the pressure-relief device is to be installed in a continuously
downward direction and in a frost-free environment.
The thermal safety valve gives the third level of protection necessary to meet G3.
An expansion (pressure relief) valve must be fitted into the heating circuit in addition to the relief
valve on the tank.
Unless using the SFUTS, for solid fuel appliances refer to manufacturer's instructions, especially
with regard to heat sinks and so on. Always install a heat sink that will work on gravity between
the store and the solid fuel appliance.
Wood burner
Heat sink
6
Store