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Areas of application
The thermostatic pump is employed mainly in:
Single module systems with hot water cylinders where a booster pump is required
(e.g. long pipe runs, system separation, heat meters).
Multi-module systems with hot water cylinders (up to 3 Dachses per pump thermostat), for feeding the
cylinder with hot water at approx. 70-80 °C in order to maintain the cylinder stratification.
Scope of Delivery
Flow rate regulated pump
Pressure side threaded connection:
(1 1/4" external thread incl. flat seal)
Intake side threaded connection:
(1 1/4" external thread, modified to accept thermostat incl. flat seal)
Installed length 180 mm
Pressure head: 1.5 m at 3 m³/h (3 Dachses)
Thermostat (70 °C)
2 m connecting cable
Brief description
Single and multi-module systems with hot water cylinders, whose interconnections between Dachs and
water cylinder exhibit a resistance of more than 20 mbar, require a circulation pump in the interconnecting
circuit (see system schematics 1 and 3). If a standard heating pump without temperature or flow rate
regulation were used, it would not be possible to achieve stratification in the hot water cylinder.
The Dachs thermostatic pump solves this problem. A thermostat incorporated into the pump feed regulates
the flow temperature to the hot water cylinder to approx. 70-80 °C. The electronically-regulated heating
pump adapts to the required flow rate by means of differential pressure control and thus saves energy
costs during partial load operation.
The flow temperature is held constant by the thermostatic pump and the flow rate is automatically adapted
to suit.
It is suitable for 1 to 3 Dachses in a single circuit. Further Dachses can be connected to the hot water
cylinder with a second circuit and a second pump (see system schematic 4).
System schematic 1: Single module system
System schematic 2: System separation
buffer
vessel
GB
buffer
vessel
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