Technical data

SERVICING

AND

MAINTENAN

INSTRUCTIONS

CONDENSING WALL-HUNG BOILER – TG05A052.A0205

GAS DATA TABLE

models: RH 28 – RHR 28

Natural Gas

G 20

Liquid Butane Gas

G 30

Liquid Propane Gas

G 31

Lower Wobbe index (15°C; 1013 mbar)

MJ/Nm

45.67 80.58 70.69

Rated feed pressure mbar 20 30 37

Minimum feed pressure mbar 17 28 28

Main burner: 13 Jets - Ø jet mm 1.25 0.77 0.77

Consumption

(15°C; 1013 mbar)

/h 2.84 - -

Consumption (15

°C; 1013 mbar)

kg/h - 1.78 1.71

GAS PRESSURE SETTING

SLOW IGNITION ADJUSTMENT

This is a slow ignition regulator whose trimmer is factory set to the

minimum.

For adjustment proceed as follows:

if turned clockwise the gas pressure at the burner increases on ignition

while turning counter-clockwise decreases the gas pressure.

ANTI CYCLING DEVICE

This allows the various ignitions to be delayed once the boiler has

reached the optimum temperature.

The time range goes from 0 up to 7.5 minutes.

NATURAL GAS G20 LIQUID BUTANE GAS G 30 LIQUID PROPANE GAS G31

min. max. max min. max. min.

2.15 11.4 27.8 5.45 35.5 7.35

Fig. 1