Riello PRESS 2G - Page 46

20140894
44
GB
• Radio disturbance protection kit
If the burner is installed in places particularly subject to radio dis-
turbance (emission of signals exceeding 10 V/m) owing to the
presence of an INVERTER, or in applications where the length of
the thermostat connections exceeds 20 metres, a protection kit is
available as an interface between the control box and the burner.
• Degassing unit
It may occur that a certain amount of air is contained in the fuel
sucked up by the pump. This air may originate from the fuel itself
as a consequence of depressurisation or air leaking past imper-
fect seals.
In double-pipe systems, the air returns to the tank from the return
pipe; in single-pipe systems, the air remains in circulation causing
pressure variations in the pump and burner malfunctions.
For this reason, we advise installing a degassing unit near the
burner in single-pipe installations.
Degassing units are provided in two versions:
Code 3010054 without filter
Code 3010055 with filter
For burner deliveries higher than 80 kg/h, install two parallel de-
gassing units.
• Kit for lengthening the combustion head
L = Standard length
L1= Length obtainable with the kit
• Spacer for shortening the combustion head
L = Spacer thickness
L1= Resulting length of combustion head
A Appendix - Accessories (optional)
Code 3010386
Degassing unit characteristics
- Burner delivery : max. 80 kg/h
- Fuel pressure : max. 0.7 bar
- Ambient temperature : max. 50 °C (without filter)
- Ambient temperature : max. 40 °C (with filter)
- Fuel temperature : max. 50 °C (without filter)
- Fuel temperature : max. 40 °C (with filter)
- Attachment connectors : 1/4 inch
Burner Code L L1
PRESS GW 3000581 185 320 mm
PRESS 1G 3000537 236 369 mm
PRESS 2G 3000538 237 395 mm
PRESS 3G 3000851 227 384 mm
Burner Code L L1
PRESS GW
3000755
142 43 mm
PRESS 1G 142 94 mm
PRESS 2G 142 95 mm
PRESS 3G 142 85 mm
Fig. 1
D90
Fig. 2
D91