Configuring The Boiler; Adjusting The Heating Capacity - Buderus Logamax Plus GB142-24 Installation Instructions Manual

 Turn the knob to set the maximum space heating system
temperature.
 Press the "Chimney Sweep"
mode.
WARNING
– Turn the "space heating system
temperature" knob to limit the heating
system temperature to the permissible flow
temperature for the floor heating circuit (e. g.
86 – 104 °F = 30 – 40 °C), so pipes will not
overheat.
DANGER
The heating system can freeze up if a power
failure occurs or after switching off the power
supply, because manual operation then is no
longer active.
– You must re-activate manual operation after
switching on the system to keep the heating
system operational (especially if there is a
risk of frost).
9.3

Configuring the boiler

9.3.1

Adjusting the heating capacity

Setting the heating capacity depending on the maximum
heat requirement (see table 9).
 Press and hold the "Chimney Sweep"
e
buttons until an "L" with a double-digit value (e. g.
L80) or an "L" followed by two dashes (L--) is displayed.
Factory setting "L--".
 Set the heating capacity by pressing the "Chimney
d
Sweep" button (higher values) or the "Reset"
button (lower values).
e
 Press the "Service"
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
d
button to exit manual
d
and "Service"
button to confirm the setting.
110 130
150
90
170
190
Regu-
lator
boiler cap.
setting
24 kW
in %
kW
L30 7.2 24,566 8.7 29,684 13.5 46,062 18.0 61,542
9.6 32,755 11.7 39,920 18.0 61,416 24.0 82,080
L40
L50 12.0 40,944 14.8 50,498 24.5 83,619 30.0 102,630
14.4 49,133 17.8 60,734 27.0 92,178 36.0 123,192
L60
L70 16.8 57,322 20.9 71,311 31.5 107,573 42.0 143,766
19.2 65,510 23.9 81,547 36.0 122,976 48.0 164,352
L80
L90 21.6 73,699 27.0 92,124 40.5 138,389 54.0 184,950
24.0 81,888 30.0 102,360 45.0 153,810 60.0 205,560
L--
Table 9 Heating capacity
1. For use at high altitude the capacity decreases with 3% for every
1000 feet.
+
L--
/
c
BC10 basic controller
Heating capacity (±5 %, sea level
boiler cap. boiler cap.
30 kW 45 kW
btu kW btu kW btu
9
1)
)
boiler cap.
60 kW
kW btu
43