Two Pipe System - GAH S40/65 User Manual

Note
Tigerloops are available from your
merchant.
FIRE VALVE SENSOR
FIXED ABOVE BOILER
LIFT
1M UP TO 4.0M
THE OIL BURNER PUMP MUST BE
7 7 7 7 7
SET FOR TWO PIPE OPERATION,
SEE 13-4.5.
FIRE VALVE SENSOR
FIXED ABOVE BOILER
THE OIL BURNER PUMP MUST
BE SET FOR TWO PIPE
OPERATION, SEE 13-4.5.
30
7-3.3 Single Pipe System - Deaerator (Tigerloop)
When the Burner is over 1 metre above the tank the installation normally requires a two
pipe system, however, a 'Tigerloop' deaerator can be used which removes air from a
single pipe lift oil feed. Higher lift heights can be achieved than are possible with
conventional two pipe systems.
IMPORTANT
The Tigerloop must be fitted upright close to the Boiler and must be
OUTSIDE the property.
FILTER
Fig. 7-3c Typical Arrangement for Tigerloop Oil System

7-3.4 Two Pipe System

Where installations have the bottom of the tank below the Oil Burner pump, it is
necessary to install a two pipe system.
IMPORTANT
Ensure that valves and filters are not fitted in the return line as this must
be unobstructed at all times.
FILTER
RETURN LINE
NO FILTERS OR VALVES
Fig. 7-3d Typical Two Pipe Oil System
TIGERLOOP
1. MAY BE ABOVE BURNER
2. MUST BE POSITIONED OUTSIDE BUILDING
3. MUST BE INSTALLED UPRIGHT
SHUT OFF VALVE
FIRE VALVE
SHUT OFF VALVE
FIRE VALVE
LIFT
1M UP TO 4M
NON-RETURN VALVE
OIL SUPPL OIL SUPPLY OIL SUPPL OIL SUPPL OIL SUPPL
TOP OUTLET PLASTIC TANK SHOWN
BOTTOM OUTLET PLASTIC TANK ALSO SUITABLE - SEE 7-1.2
BOTTOM OUTLET STEEL TANK ALSO SUITABLE - SEE 7-1.3
ANTI-SYPHON DEVICE
(TOP OUTLET ONLY)
SHUT OFF VALVE
50mm
PLASTIC TANK SHOWN - SEE 7-1.2
STEEL TANK ALSO SUITABLE - SEE 7-1.3
SAW CUT INSIDE TANK TO
PREVENT SYPHON
Y Y Y Y 7 7 7 7 7