The Alpha CD13R, CD18R and CD24R high efficiency heating only boilers are for use on open-vented or sealed systems (when fitted with a sealed system kit). With these high efficiency boilers, there is a plentiful supply of hot water when fitted with a storage cylinder.
With a power output ranging from 13kW to 24kW, they provide the flexible answer for the majority of traditional installation scenarios. The CDR range has a SEDBUK Band ‘A’ efficiency rating. The CDR can operate on an open-vented system which makes them ideal as replacements for traditional cast iron boilers.

Features:
• 1 year guarantee
• Stainless steel heat exchanger
• Daily pump kick
• Fully modulating NOx burner
• Simple clock wiring
• Frost thermostat
• No compartment ventilation needed
• Pump overrun feature
• Anticycling device
• 13.1 CH Output (KW)
• Weight 27 kg

FREE UK mainland delivery service within 2 to 5 working days