2
Product description
Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
11
2.7
Conditions for operation
Maintaining the specified operating conditions will enable
the boiler to provide a high level of reliability and long serv-
ice life. Some details relate only to operation with Buderus
Logamatic control panels.
2.7.1
General operating conditions
Boiler model
Unit
GB125/22 BE
GB125/30 BE
GB125/35 BE
Boiler overall length (L)
inch
37 1/2"
42 3/8"
42 3/8"
Boiler block length (LK)
inch
25 3/4"
30 ½"
30 ½"
Combustion chamber length
inch
16"
20 ½"
20 ½"
Combustion chamber length
inch
10 5/8"
Burner door thickness
inch
2 1/3"
Distance between boiler feet (FL)
inch
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 without 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 condi-
tions may cause irreversible damage to indi-
vidual components of the boiler as a whole.
V
The information on the rating plate is defin-
itive.
Operating conditions
Min. boiler water
temperature
Operating interruption
(complete boiler shutdown)
Heating circuit with
heating circuit mixer
1)
Min. return temperature
In combination with Logamatic control for variable low-temperature operating modes, such as Logamatic 2107
no requirements operating
temperatures are ensured by
the Logamatic controls
2)
Automatically by Logamatic controls not required but recommended with
low-temperature heating system
design 130/113 °F
Required with:
– Underfloor radiant heating systems
– Systems with large water capacity:
> 115 gal/MBH
(1 MBH = 100,000 Btu/hr)
No requirements
Tab. 4
General operating conditions
1) A heating circuit with a mixer improves controllability and is specifically recommended for systems with several heating circuits.
2) If heating zones or a boiler circuit actuator cannot be regulated via the control device (for example pump logic), an operating temperature of
122 °F must be reached within 10 min of switching the burner ON by restricting the water volume flow.
