3.3 FittiNG tHE BURNER
With all Grant Boiler House models, the burner and boiler are
supplied together but in separate cartons.
Fit the burner to the boiler as follows:
1.
Remove and retain the fixing nut from the stud on the burner
flange on the front of the boiler.
•
Leave the small nut in position on the threaded stud.
Check that this nut is fully tightened against the burner
mounting flange.
•
Do not remove the burner mounting flange from the
boiler.
2. Check that the ‘O’ ring around the collar of the burner
combustion head is in position.
3. Fit the burner on the boiler by sliding the combustion head
into the hole in the centre of the mounting flange. Locate the
fixing lug (on the top of the burner) on to the fixing stud.
4. With the burner level and correctly located into the mounting
flange, fit the nut (previously removed) on to the fixing stud
and tighten to secure using a 13 mm spanner.
maiN BURNER COmpONENtS
Figure 3-9:
Key to Riello RDB burner components
item
Description
1
Reset button with lock-out lamp
2
Photoresistance
3
Snorkel (BF)
4
Blast tube
5
Control box
6
Pump pressure adjustment screw
7
Pressure gauge connection
8
Oil pump
9
Flange with gasket (do not remove from boiler)
10
Air damper adjustment screw
Section 3: Oil Storage and Supply System
page 13
8
9
3
10
5
1
6
7
2
4
Figure 3-7:
Riello RDB burner components (15/21, 21/26, 26/35 and 36/46kW)
8
9
3
10
5
1
6
7
2
4
Figure 3-8:
Riello RDB burner components (46/58 and 58/70kW)
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, 900 mm long
(product code: RBS36)
•
⅜ʺ x ¼ʺ BSP adaptor (product code: RBS35)
•
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. Refer to Section 3.3.
Summary of Contents for Vortex VTXBH1521
Page 51: ...Notes Page 51 NOTES...
