How to Replace a Wilo Yonos Para 15/6 (UK)
Fit a yonos para RS 15/6. UK isolation valves, orientation, air bleed.
Wilo
Part
Wilo Yonos Para 15/6 — yonos para RS 15/6. Confirm 130 mm or 180 mm face-to-face before ordering.
Isolate
Turn off boiler and 230 V spur. Close both pump gate valves. Have a towel ready — approx 500 mL will spill.
Fit
Undo pump unions, transfer power lead terminating in the correct L/N/E order. Orient the pump head so the shaft is horizontal. Open valves, bleed via the centre screw until water flows clear.
Frequently asked questions
- Speed setting?
- Most modern homes: setting II on a UPS2. Auto-adapt on Alpha2/Yonos.
- Do I need to power flush after fitting?
- Best practice — but at minimum add 500 mL Fernox F1 or Sentinel X100.
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