Potterton Gold 4 kW Installation And Servicing Instructions page 7

AUTOMATIC AIR VENT
150mm MINIMUM
DRAIN VALVE
FIGURE THREE: BASIC PLUMBING LAYOUT
EXPANSION / SAFETY
RELIEF SYSTEM
SERVICE VALVE
ALTERNATIVE BY-PASS ARRANGEMENT
USING THE BATHROOM RADIATOR FITTED
WITH TWO LOCKSHIELD VALVES
OPEN VENTED SYSTEMS MUST
HAVE A MINIMUM HEAD OF
1.5 METRES AND MAXIMUM
HEAD OF 30 METRES
PUMP
ISOLATING VALVE
AUTOMATIC
PRESSURE
BYPASS VALVE
FLOW
RETURN
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