Rohtenbach EHI circulation pump

The pump is intended primarily for forcing circulation in central heating systems. The engine, which is equipped with an inverter and a modern processor, allows the performance and pressure parameters to be adjusted to the user's needs, and the current energy consumption is displayed on the electronic dial of the device.The pump is supplied with union joints and power cable.

The pump provides 3 operating modes:
• AUTO (factory setting) - From highest to lowest proportional pressure characteristic curve
• PP1 / PP2 / PP3  - Proportional pressure curves (radiator system)
• CP1 / CP2 / CP3  - Constant pressure curves (floor heating)
• I/II/II - Constant rotational speed curves

• NIGHT MODE

Energy Efficiency Index for this pumps is    EEI<=0,23

Characteristics:

• Extremely easy to use

• Auto-adaptive AUTO mode allows you to start the pump without having to make any adjustments

• High comfort of use

• Quiet operation

• Very low power consumption, up to 5 W

• Corrosion resistance

• Low failure rate

• Solid construction

• Easy to install

• 24-month warranty

Working conditions

The circulation pump has both NIGHT and AUTO modes. The circulation pump is equipped with a permanent magnet motor and a differential pressure regulator, which automatically and constantly adjust the pump's performance to the needs of the correct operation of the system in which the device operates. After the built-in temperature sensor detects a temperature drop of 0.1°C/min within approx. 2 hours, the pump will switch to energy-saving night mode. If the temperature increases by approximately 10°C, the pump will automatically return to normal operating mode.

Application:

• Constant-temperature heating systems with variable flow

• Industrial circulation systems

• Heating systems with variable pipeline temperature, use of a heating system with night mode

• Air conditioning systems

• Home central heating system and home hot water systems

Technical parameters:

 • material: cast iron
 • bearing material: ceramics
 • input: 220-230V / 50Hz
 • spacing: 180mm

 • power (1/2/3): 5W / 10W / 22W
 • max flow(1/2/3): 18 l/min / 36 l/min / 48 l/min

 • max water level (1/2/3): 3m / 4m / 4,5m
 • fluid temperature: 2-95 °C
 • max pressure: 10 bar
 • protection: IP44
 • pipe union/diameter : 1" - DN 25
 • pump connection : 1 1/2" - DN 40