Page 1
Installation and Operation Manual CSE OTS ZV W8-SC PUMP STATION with non-return valve, for heating systems CSE OTS ZV W8-SC...
Page 2
1. Introduction CSE OTS ZV W8-SC pump station is designed to be installed in unmixed hydraulic circuits in heating systems where a non return valve is required. The pump station provides circulation through the concerned heating circuit, preventing circulation in the opposite direction. 2.
3. Flow direction FLOW DIRECTION SMĚR PROUDĚNÍ 4. Wilo-Para SC Pump 4.1. General Information The high efficiency circulation pumps of the PARA SC series are used exclusively for the circulation of liquids in hot water heating systems. Operating the pump in other systems or in systems lacking water, containing air or in unpressurized systems can lead to its rapid destruction.
4.5. Pump Control Constant speed operating mode and pump performance curve III are preset as factory settings for the PARA SC pump. After switching on, the pump runs at the factory setting or at the last setting. The settings can be changed using the operating button, see below. OPERATING BUTTON Briefly press the control button to: select the pump operating mode: constant speed, Δp-v or Δp-c and the pump performance curve...
Page 6
LED indicators Operating mode Performance curve constant speed constant speed Δp-v variable Δp-v variable Δp-v variable Δp-c constant Δp-c constant Δp-c constant constant speed PUMP VENTING If air is present in the pump: Activate the pump venting function by pressing and holding the operating button for 3 sec.
Page 7
MANUAL RESTART If the pump has been inactive for a long time or is blocked, activate the manual restart by holding the operating button for 5 seconds. The LEDs flash sequentially clockwise. The manual restart takes max. 10 minutes before the pump returns to normal operation. To cancel the manual restart, hold down the operating button for 5 seconds.
PUMP OPERATING MODES Variable differential pressure Δp-v It is not recommended to use variable differential pressure for solid fuel boiler pumps! The Variable differential pressure operating mode is recommended in systems where it is advisable to reduce the discharge pressure of the pump in parallel with the decreasing required flow rate. A typical example is a heating circuit with radiators equipped with thermostatic valves, where the selection of this operating mode can reduce the noise from thermostatic valves which is caused by closing too many radiators in the system.
Constant differential pressure Δp-c The Constant differential pressure (constant delivery head) operating mode is suitable for hydraulic circuits of heat sources (boilers, heat pumps, solar thermal systems etc.), hot water storage tanks, heaters, underfloor heating systems and large heating circuits where the previous mode Δp- v could cause insufficient heating through discharge reduction.
Constant speed Constant speed operating mode means that the pump does not adjust its speed in any way depending on the flow rate or discharge of the hydraulic circuit. The flow and discharge of the pump are thus entirely dependent on the speed setting set (I, II, III) and the hydraulic circuit settings.
4.6. Technical Data PARA 25/8 SC Electric Data Electric Data 1 ~ 230 V, 50 - 60 Hz Power input (min./max.) 2 / 75 W Current (min./max.) 0.03 / 0.66 A Max. speed 4800 rpm Speed control frequency converter Energy Efficiency Index ≤...
Need help?
Do you have a question about the CSE OTS ZV W and is the answer not in the manual?
Questions and answers