Control unit support
SKU: Viessmann-7831771
Please call with your boiler serial number before placing order to ensure compatibility
Please call for stock availability: 01202718660
All orders placed after 3pm will be processed the next working day (Monday to Friday except bank holidays).
Control cable
Burner gauze assembly gasket
Ignition electrode with gasket
Filling with backflow preventer
Connection line – diaphragm expansion vessel
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