Ideal Boilers Maximiser SE 42 Installation & Servicing Instructions Manual

Ideal Boilers Maximiser SE 42 Installation & Servicing Instructions Manual Manual pdf 17 page image

INSTALLATION17 PUMP SPECIFICATIONThe boiler is fitted with a Grundfos UP 25/55 circulating pump, wich provides circulation through the boiler heat exchanger.Some pump pressure remains available for the system and is shown on the graphs below.If this pressure is not sufficient an additional pump to overcome system resistance must be fitted. (see frames 3 & 4 for pumppositions)Fig. 17.1 Automatic air-vent.Central heating circuitThe connections for the return pipe and the flow pipe of thecentral heating circuit are located at the bottom rightside ofthe unit. The return pipe has a blue mark, the supply pipe ared mark. It is recommended to connect the unit to the pipesystem by means of valves.If applicable select the size of the expansion vessel,depending on the central heating water temperature, the totalwater volume of the installation and the static water pressure.The boiler has been equipped with an automatic air-vent.This vent is located in the left top side wall of the heatexchanger. (Refer to Fig. 17.1).A pressure safety device is necessary, too. The pressuresafety device has to be installed in the flow pipe.In installations at which all radiators have been provided withthermostatic radiator valves, you need to ensure that thewater circulation through the unit is guaranteed. This can bedone by means of a differential pressure valve, that isinstalled between the supply pipe and the return pipe atabout 6 meters distance from the unit. The pipe diameter hasto be at least 22 mm for an installed capacity of 22 and 30kW and 28 mm for an installed capacity of 42 kW or over.(Refer to Fig 17.2).The Ideal Maximiser is not suited for installations with anatural water circulation (gravity installations).Important information:Corrosion in the central heating system depends on:- the water quality,- not flushing old installations when installing a new boiler,- intrusion of oxygen through leakages or open valves,- diffusion in synthetic (floor) heating systems.The changing temperature and pressure in the system canalso accelerate the corrosion.If the Ideal Maximiser is to be installed in an existing installa-tion, the central heating water has to be checked in advance.If this water is contaminated, the whole installation has to bedrained and flushed before the unit can be mounted and thesystem filled.Do not use system additives.(refer to frame 5, page 6)Fig. 17.2 Schematic diagram of installation, with remoteshunt pipe and differential pressure valve.231 41. Valves2. Relief valve3. Expansion vessel4. Differential pressure valve211084216034 UK459141200 4000 600 800 16001000 1200 14000100200300400600litre/hourmbarUPUP25-5525-551800500∆T=20KT=20KAvailiable forinstallationlift pump200 4000 600 800 16001000 1200 14000100200300400600litre/hourmbarUPUP25-5525-551800500∆T=20KT=20KAvailiable forinstallationlift pump20002200 24002600MaximiserMaximiser SE42SE42 MaximiserMaximiser SE65SE65∆T=25KT=25KMaximiser SE - Installation 16