Potterton Sirius two WH, Инструкция по эксплуатации

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7108686.02 (1-11/12) 8
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INSTRUCTIONS PRIOR TO INSTALLATION
The following notes and instructions are addressed to installers to allow them to carry out trouble-free installation. Instructions for
igniting and using the boiler are contained in the “Instructions for Users” section. The installation must satisfy the requirements of
BS and EN standards and local by-laws and technical regulations.
Moreover, the installation technician must be qualified to install heating appliances. Additionally, bear in mind the following:
• The boiler can be used with any kind of convector plate, radiator or thermoconvector. Design the system sections as usual,
though, bearing in mind the available capacity-head at the plate (see annex “SECTION” E at the end of this manual).
• Initial ignition of the boiler must be carried out by the Authorised Service Engineer.
Failure to observe the above will render the warranty null and void.
When supplied, the boiler is not fitted with the following components: EXPANSION VESSEL - SYSTEM FILLING TAP -
HYDRAULIC SEPARATOR. These must be mounted by the fitter.
Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of danger.
9. INSTALLING THE BOILER
The template outline is shown in annex “ SECTION ” C at the end of this manual.
After deciding the exact location of the boiler, fix the template to the wall. Connect the system to the gas and water inlets present
on the lower bar of the template. Make sure the rear part of the boiler (back) is as parallel as possible to the wall (otherwise, shim
the lower part). Fit two G1”1/4 taps (flow and return) on the central heating circuit; these taps make it possible to carry out im-
portant operations on the system without draining it completely. Fit a hydraulic separator, sized according to maximum boiler and
system pressure, downline from the hydraulic connectors of the boiler. If you are either installing the boiler on an existing system
installing a new system, as well as the above, fit a strainer under the boiler on the system return line in order to collect any deposits
and scale circulating in the system after flushing. After fixing the boiler to the template, connect the flue and air ducts, supplied as
accessories, as described in the following sections. Connect the siphon to a drain trap, making sure the slope is continuous. Avoid
horizontal stretches. The boiler is electronically fitted out for connection to an external storage tank.
Take special care when filling the heating system. In particular, open any thermostat valves in the system, ensure the water
enters slowly in order to prevent the formation of air inside the primary circuit until operating pressure is reached. Lastly,
vent any radiators in the system. POTTERTON COMMERCIAL declines all liability for damage deriving from the presence of
air bubbles in the primary exchanger due to the incorrect or imprecise observance of the above.
Tighten the boiler water connections with care (maximum tightening torque 30 Nm).
9.1 BOILER PUMP
The boiler is supplied without the circulation pump. This component must be installed on the heating return to allow water to circu-
late between the boiler and the low loss header and can be purchased off the shelf or supplied by POTTERTON COMMERCIAL
as an accessory (modulating pump).
• In the first case the pump is installed on the heating return union near the boiler. To size it correctly see the Flow/Pressure
drops chart at the end of the manual in annex “SECTION” E (Size the pump in accordance to the ÐT of the system design.
• In the second case the pump is installed directly on the boiler removing the pipe on the internal circuit (first remove the
front casing). For hydraulic performance data, see the Flow/Head charts at the end of the manual in annex “SECTION” E.
The water in the system is circulated by the relative pumps, see annex “SECTION” E. Check that the flow of the water circulating
in the boiler is not less than the value indicated in the following table.
Model Minimum flow rate (l/h)
Operating flow rate (l/h) with POTTERTON
COMMERCIAL low loss header
WH 90
2000 4200
WH 110
2250 4600