HS Tarm TPK, User Manual

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3.2 Installation with storage tank (Scandpell)
The boiler can be installed with either a storage tank or a hot water tank, if the control unit is to control
one of these.
In other words, it is not possible to set up a system with both a storage tank and a hot water
tank controlled by the control unit.
The boiler’s additional temperature sensor is located in a sensor pocket in the storage tank – usually in the
middle part of the tank.
In order to avoid corrosion in the boiler, a device must be installed that ensures a minimum
return temperature of 55 °C to the boiler.
3.2.1 Installation with storage tank type O and separate hot water tank
1: TPK/Scandpell
2: Loading Unit 55 °C (you could also use a thermostatic 3-way valve and pump – (use a balancing valve on the shunt loop)
3: Safety valve
4: Storage tank type O (800, 1000 or 1500 liter)
5: Heating circuit pump
6: Hot water tank VBF 85, VBF 100 or VBF 150
7: Thermostat with external sensor bulb
8: Expansion tank (the size should be adapted to the total volume of the system)
9: Automatic air vent
Please note that on this installation the summer/winter function cannot be used. To be set to winter
(standard set up).
Control unit set up:
Function of extra sensor is set to the storage tank (Service menu).
Pump function: Boiler pump (Service menu)
Set the desired storage tank temperature (storage tank menu in User’s menu)
Storage tank minimum temperature is set at the same place by setting the hysteresis at a suitable value.
See also the functional description in 5.1.2.