INDEX Warning Who should read these instructions Symbols Recommendations Applicable standards Warnings Packing introduction Description of function Application examples Description of operation technical characteristics Tank cheracteristics Domestic Hot Water performances installation Dimensions Installation recommendation Wiring diagram Central heating connections Domestic hot water connections commissioning Filling the tank What to check start-up?
WARNINGS Who should read these instructions These instructions should be read by: • It is important to switch the tank OFF before carrying out - the specifying engineer any work. - the installer - the user • There are no user accessible parts inside the tank casing. - the service engineer symbols aPPlicable standards...
INTRoDuCTIoN descriPtion of function “Tank-in-Tank” system Outer tank “Tank-in-Tank” is a heat exchanger with a built-in accumulator, made The outer tank containing water from the primary circuit arriving up of two concentric tanks: the inner tank contains domestic water from the boiler, is made of carbon steel STW 22. to be reheated (secondary) and the outer tank contains the heating fluid (primary) which circulates between the two tanks and transfers Thermal Insulation...
INTRoDuCTIoN descriPtion of oPeration Operating cycle The thermostat is triggered and starts up the pump which circulates the heating water. This water circulates around the inside tank and heats up the domestic water. When the required temperature is reached, the thermostat stops the primary circulating pump. Cold Water Domestic hot water Heating fluid...
Wiring diagram This hot water tank should not be installed where it will be exposed [SLME 120 - 200 - 300 - 400 - 600] to outside weather conditions. Choose the most appropriate location according to the position of 1.
CommISSIoNING What to check start-uP? Before pressurising the central heating tank (primary) you should first pressurise the domestic hot water • Safety valves (domestic hot water) and (central heating) tank (secondary). correctly installed and discharge connected to the drains. Both the domestic hot water tank and the central •...
mAINTENANCE Periodical checks by the user Central heating tank • Check the pressure of the boiler’s pressure gauge: it should To empty off the primary circuit: be between 0.5 and 1.5 bar. • Carry out a monthly visual inspection of the valves, 1.
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