8
FIGURE 3 : BASIC PLUMBING LAYOUT
AUTOMATIC AIR VENT
EXPANSION / SAFETY
RELIEF SYSTEM
INC EXP VESSEL,
FILLING LOOP, SAFETY
RELIEF VALVE, GAUGE
SERVICE VALVE
PUMP
2 METRES MINIMUM
AMPTEC BOILER
AUTOMATIC
PRESSURE
BYPASS VALVE
FLOW
DRAIN VALVE
ALTERNATIVE BY-PASS
ARRANGEMENT USING THE
RADIATOR FITTED WITH TWO
LOCKSHIELD VALVES
NOTES
1. OPEN VENTED SYSTEMS MUST HAVE
A MINIMUM HEAD OF 1.5 METRES AND
MAXIMUM HEAD OF 30 METRES
2. FIT THE AUTOMATIC AIR VENT (AAV)
AS SHOWN WITH 150mm MINIMUM
DISTANCE FROM BEND.
3. ENSURE NO VALVE IS FITTED BETWEEN
THE AMPTEC BOILER & THE EXPANSION
KIT/SAFETY DISCHARGE VALVE.
4. THE BOILER CAN BE ISOLATED BY
CLOSING THE PUMP VALVES & THE SERVICE
VALVE ON THE RETURN PIPEWORK TO THE
BOILER.
RETURN
