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Summary of Contents for Watts HKF20 Series
- Page 1 Series HKF20 Pump mixing groups with thermostatic fix point control for heating systems Installation and operating manual (translated from the original operating manual) Watts.eu...
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Page 2: Table Of Contents
Contents 1 General Information General Information ............1.1 Important information about the installation and Important information about the installation and operat- operating manual ing manual..............NOTICE Notes on supplier documents........Product conformity............The plant operator is responsible for ensuring compliance with the local laws and regulations (e.g. -
Page 3: Safety
2.5 Responsibilities of the operator 2 Safety The operator must ensure that: 2.1 Safety notices • The product (HKF20) is only used for its intended purpose. • The product (HKF20) is installed, operated and maintained ac- DANGER cording to the specifications in the Installation and Operating Manual. -
Page 4: Technical Specification
3 Technical specification Hydraulic data Max. operating pressure 6 bar Ambient temperature -2 to +40 ° (see pump specifications) Operating temperature +2 to +90 ° (see pump specifications) Gravity brake opening pressure 10 mbar Kvs mixing valve 3.4 m³/h Temperature display range 0 - 120 °C Temperature setting range 20-43 °C / 20-55 °C / 30-70 °C (depending on mixing valve design) Nominal width... -
Page 5: Pressure Loss Diagram
4 Pressure loss diagram HKF20 1.000 1.000 10.000 Flow rate [L/h] 5 Dimensions G1" G1" G1" G1" HKF20-IM-DE-W-UK-02-2025-Rev.2 | Part no. 10084531... -
Page 6: Components Overview
6 Components overview 7 Installation and commissioning 7.1 General safety information DANGER Electrical energy! Risk of death from electric shock. • Work on parts carrying live voltage must only be carried out by trained electricians. • Disconnect the power supply of the system and secure it against being switched back on before carrying out any install- ation, maintenance, cleaning or repair work. -
Page 7: Installation Diagram
7.2 Installation diagram 7.4 Starting the unit ü The pump group is fully installed. ü The fittings are preassembled at the factory; however, the tightness of the seal is to be checked before commissioning (pressure test). ü The pump group must be disconnected from the power supply and secured. -
Page 8: Switching The Supply And Return Lines
7.7 Switching the supply and return lines 5. Loosen the nut on the return ball valve and rotate the latter through 180 degrees. ü The supply is on the right-hand side 6. Rotate the pump group through 180 degrees. 1. Disconnect the power supply and secure against reconnec- ð... -
Page 9: Maintenance
8.4 Removing the circulation pump 8 Maintenance 1. Disconnect the power supply and secure against reconnec- 8.1 General safety information tion. 2. Remove the pump group front shell. DANGER 3. Close the shut-off valves. 4. Remove the thermometer handles and the intermediate insula- Electricity! tion. -
Page 10: Removing The Thermostatic Mixing Valve
Warranty: all sales and contracts for sale are expressly conditioned on the buyer’s assent to Watts terms and conditions found on its website www.watts.eu/en/gtc. Watts hereby objects to any term, different from or additional to Watts terms, contained in any buyer communication in any form, unless agreed to in a writing signed by an officer of Watts.
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