MHS Boilers STRATA 3 220, Инструкции по установке, обслуживанию и эксплуатации

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STRATA3
5.1 unpacking the boiler (contd)
The unit must be inspected immediately after delivery. Any damage to the consignment must be
reported within 3 days.
Firstly move the packaged appliance to the desired location. To unpack the boiler, carefully remove
the outer crate and cut away the outer packaging. By holding the steel base only, lift the boiler and remove
the palette.
5.2 positioning the boiler
The appliance should be moved to the desired location prior to unpacking, making sure that all
clearance dimensions as stated in section 4.2 are adhered to.
Level the appliance in a horizontal position by turning the adjustable feet underneath the base of the
unit. Check that the appliance is in a true horizontal position by using a spirit level.
Once the appliance is in a true horizontal position, the adjustable feet must be secured by the
locking nuts.
5.3 gas connection
The gas connection is located on the upper left hand side of the appliance (viewed from the front) (see
section 3.2). The gas supply should be sized, installed, tested and purged in accordance with IGE/UP/1&2.
The connection to the appliance must include a suitable method of disconnection and a gas control
cock must be installed adjacent to the appliance for isolation purposes.
The gas pipe used to supply the appliance must not allow a pressure drop of greater than 1 mbar from
the meter to the appliance. The nominal inlet working gas pressure measured at the appliance should be
20.0 mbar for natural gas (G20) or 37 mbar (G31) for propane (LPG). The installer should install a pressure
test point adjacent to the gas inlet connection.
The gas supply line should be purged in accordance with IGE/UP/1. WARNING: Before purging open
all doors and windows, also extinguish any cigarettes, pipes and any other naked lights.
5.4 LPG conversion instructions
The Strata 3 is supplied suitable for use with natural gas. For conversion to LPG, the natural gas injector
must be replaced with the LPG injector (accessed from inside the air inlet duct). The LPG injector is
included in the LPG conversion kit, part No. 96.00044-0404.
Injector Size
Natural Gas (G20)
L.P.G (G31)
220
10.8mmØ
7.5mmØ
330
13.0mmØ
9.7mmØ
5.5 water connections
Strata 3 boilers must only be installed on sealed and pressurised systems. All systems must be
thoroughly cleansed prior to the connection of the boiler. The system water must be treated to prevent
general system corrosion and the deposition of scale or sludge in the boiler waterways. If installing the
boiler onto an old system, it is recommended to install a diamante, spirotech or similar dirt arrester/filter.
See section 4.5 for water treatment product stockists. The central heating flow and return connections
are flanged fittings – DN40 PN6 for the Strata 3 220 and DN50 PN6 for the Strata 3 330. The flow and
return connections are located at the upper rear of the appliance.
A suitable safety valve must be installed onto the boiler flow pipe between the boiler and any
isolation valve. The boiler flow and return pipes must include a method of disconnection and must include
isolation valves.
The low pressure gas cut off switch will need to be adjusted from approx. 15mbar (G20) to
approx. 27 mbar (G31).