Bosch ZWB28-3A SERIES - Adjusting Supply Temperature with High Limit Dial

Operation | 17
6720872363 (2017/04)
Greenstar combi 100 p / 151 p
▶ Adjusting the supply temperature with the boiler high limit dial :
– Radiant floor heating: e.g. setting 3 (approx. 122 °F (50 °C))
– Panel or cast iron radiator heating: setting 6 (approx. 167 °F (75 °C))
– Heating with supply temperatures up to 194 °F (90 °C): setting max
Fig. 5
The burner ON indicator lamp lights up if the burner is operating.
Table 3 Typical supply temperatures
Boiler high limit dial Typical supply
temperatures
Sample application
1 approx. 95 °F (35 °C) Frost protection
2 approx. 109 °F (43 °C)
3 approx. 122 °F (50 °C) Radiant floor heating system
4 approx. 140 °F (60 °C)
5 approx. 153 °F (67 °C)
6 approx. 167 °F (75 °C) Radiator heating system
max approx. 187 °F (86 °C) Convector heating
eco
reset
6 720 641 933-53.1O
max
1
2
3
4
5
6
max
1
2
3
4
e
6
min