2
Product description
Logano GB125 BE US/CA - Subject to technical modifications.
9
2.9
Conditions for operation
Maintaining the specified operating conditions will enable
the boiler to provide a high level of reliability and long
service life. Some details relate only to operation with
Logamatic control panels from Buderus.
2.9.1
General operating conditions
Boiler type
Unit
GB125/22 BE
GB125/30 BE
GB125/35 BE
Boiler overall length (L)
Inches
37 1/2"
42 3/8"
42 3/8"
Boiler block length (L
K
)
Inches
25 3/4"
30 1/2"
30 1/2"
Combustion chamber length
Inches
16"
20 1/2"
20 1/2"
Combustion chamber length
Inches
10 5/8"
Burner door thickness
Inches
2 1/3"
Distance between boiler feet (F
L
)
Inches
16 1/8"
20 7/8"
20 7/8"
Net weight
1)
lbs
423
503
503
Tab. 3
Dimensions, weight and other data for boilers with burners
1) Weight incl. packaging material approx. 6-8 % more.
CAUTION:
Risk of system damage if
operating conditions are not maintained.
Extreme divergence from the stated
conditions may cause irreversible damage to
individual components of the boiler.
B
The information on the rating plate is
definitive.
Operating conditions
Min. boiler water tempera-
ture
Operating interruption
(complete boiler shutdown)
Heating zone with
heating zone mixing valve
1)
Min. return temperature
In combination with Logamatic control panel for variable low-temperature operating modes, such as Logamatic 2107
.
No requirements. Operating
temperatures are safeguarded
by the Logamatic control
panel.
2)
Automatically by Logamatic control
panel
Not required but recommended with
low-temperature heating system design
130/113 °F.
Required with:
•
Radiant floor heating system
•
Systems with large water capacity:
> 115 gal/MBH
(1 MBH = 100,000 Btu/hr)
No requirements
Tab. 4
General operating conditions
1) A heating zone with a mixing valve improves controllability and is specifically recommended for systems with several heating zones.
2) If the control panel does not influence the heating zones or a heating zone actuating component (e.g. Pumplogic), the burner ON mode must
reach an operating temperature of 122 °F within 10 min by restricting volume flow.
