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Potterton Solar - Solar Thermal Domestic Hot Water System 23
Date Date Date Date Date Date Date Date Date Date Date Date Date
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Check condition of all pipework ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Check condition of insulation ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Check frost protection of solar fluid (every 2 years)
Concentration ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____
Protection to ºC ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____
Next check date ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____
Check solar expansion vessel charge pressure
bar bar bar bar bar bar bar bar bar bar bar bar bar
Check solar primary system pressure (cold)
bar bar bar bar bar bar bar bar bar bar bar bar bar
Check solar primary system flow rate
l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min
Check operation of PRV ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Check sensor operation ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
(use resistance/temperature table. See page 22)
Check solar cylinder in accordance with ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
manufacturer's instructions
Ensure system is free of air ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Visually check condition of solar collector panels ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
Visually check condition of collector panel brackets ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
and fixings (every 2 years)
Visually check condition of any waterproofing ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
(around pipe entries to roof and roof fixings)
Engineers initials
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____