Heatrae Sadia Amptec 95 022 001 C-400 Fitting Instructions And User Manual page 6

NOTE: TO COMPLY WITH BUILDING REGULATIONS, PART L (PART J IN SCOTLAND), WHEN THE
AMPTEC IS USED FOR CENTRAL HEATING PURPOSES, A ROOM THERMOSTAT MUST BE FITTED TO
CONTROL THE BOILER (SEE PAGE 15).
Do not fit thermostatic radiator valves to the room with the control thermostat, other rooms may be fitted with
thermostatic radiator valves. DO NOT OPERATE UNDER THERMOSTATIC RADIATOR VALVES ONLY.
Use standard pumps, controls, room thermostat, valves, etc. The main electrical power (high current) must
be routed directly to the boiler via an MCB and RCD, not through the controls. Only a control signal to the
boiler comes from the programmer. The switching of the high power current is done inside the boiler.
For installations with more than one boiler, mount the boilers side-by-side with a minimum of 50mm gap
between each boiler, output flow tails at the top and the returns at the bottom. ‘Tee’ in the flows together,
increasing in pipe size at each boiler to ensure full flow to each boiler. E.g. for 3 x 1200 boilers, first boiler
use a 22mm elbow to the second boiler. Second boiler tee 22mm in from first boiler, 22mm branch to
second boiler, 28mm to third boiler. Third boiler tee 28mm in from second boiler, 22mm branch to third
boiler, 35mm away to heating circuit. Repeat for the return connections. Single pump in the 35mm flow line,
ensure sufficient flow for all 3 boilers, i.e. (for 3 x 1200 boilers requires 3 x 12 l/m = 36 litres/minute
minimum). Do not reduce pipework before ‘teeing’. See figure four on page 8.
When filling the system check for leaks. THE WARRANTY WILL BE INVALIDATED IF WATER LEAKS
INTO THE BOILER. ENSURE ALL JOINTS ABOVE THE BOILER ARE SOUND.
After installation the system must first be flushed out in accordance with BS 7593:1992 before adding the
inhibitor. Fernox “Superfloc”, or BetzDearborn Setinel X300 or X400 are ideal flushing agents for new and
existing systems. After flushing the correct amount of inhibitor must be added before use. Fernox
“Superconcentrate”, or MB-1, or BetzDearborn Sentinel X100 can be used for most water areas, however
we recommend you should check with your local water authority to ensure suitability. Check the inhibitor
concentration after installation and periodically thereafter to ensure correct protection.
FAILURE TO FLUSH PROPERLY OR INADEQUATE INHIBITOR IN THE SYSTEM WILL INVALIDATE THE
WARRANTY.
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