3.2.2 TWO PIPE CONNECTION
For either a two pipe (sub gravity) or a single pipe (suction)
system with a deaerator, the following additional items will be
required:
•
Flexible fuel hose ⅜ʺ male x ¼ʺ female (product code:
RBS36 - 900 mm / product code: RBS36XS - 600mm)
•
⅜ʺ x ¼ʺ BSP adaptor (product code: Z3003602)
•
¼ʺ isolating valve (product code: ISOLATION1/4)
These are available to purchase from Grant UK.
Connect the oil supply to the burner oil pump as follows:
1.
Fit the flexible fuel hose (supplied with the boiler) to the
suction port of the burner oil pump, as detailed in Section
3.2.1.
With either a two pipe (sub gravity) system or a single pipe
(suction) system with a deaerator, the by-pass screw (supplied
with the boiler) must be fitted to the burner oil pump as follows:
1. Unscrew and remove the blanking plug from the return port
on the burner oil pump and discard it.
2. Fit the by-pass screw into the threaded hole (inside the return
port) and fully screw it in using an Allen key.
3.
Fit the nut of the elbow connection on the flexible fuel hose
into the return port and tighten.
4.
Fit the ¼ʺ isolating valve (not supplied) to the end of the rigid
oil return pipe (to the deaerator or oil tank) using a fitting to
suit the pipe size and type (not supplied).
5.
Connect the other end of the flexible fuel hose (not supplied)
to the isolating valve using a ⅜ʺ x ¼ʺ BSP adaptor (not
supplied).
6.
Re-fit the burner to the boiler.
Section 3: Oil Storage and Supply System
Page 13
3.2.1 SINGLE PIPE (GRAVITY) CONNECTION -
REFER TO FIGURE 3-5
Connect the oil supply to the burner oil pump as follows:
1. Unscrew and remove the plastic blanking plug from the
suction port of the burner oil pump and discard it.
2.
Fit the nut of the elbow connection on the flexible fuel hose
(supplied with the boiler) into the suction port and tighten.
3.
Fit the ¼ʺ isolating valve (supplied with the boiler) to the end
of the rigid oil supply pipe using a fitting to suit the pipe size
and type (not supplied).
4.
Connect the other end of the flexible fuel hose to the isolating
valve using the ⅜ʺ x ¼ʺ BSP adaptor (supplied with the
boiler).
5.
Re-fit the burner to the boiler.
2
3
5
6
7
1
8
4
Figure 3-5:
Riello oil pump
Item
Description
1
Inlet (suction) port
2
Return port
3
By-pass screw
4
Pressure gauge port
5
Pressure adjustment
6
Vacuum gauge port
7
Solenoid
8
Auxiliary pressure test point
