Installation Instructions
2
Product description
Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.
9
2.8 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.
2.8.1 General operating conditions
Caution: Risk of system damage if operating
conditions are not maintained.
Irreversible damage to individual compo-
nents of the boiler as a whole or the heating
system may occur.
V The information on the rating plate is bind-
ing and must be observed.
Operating conditions
Min. boiler water tempera-
ture
Operating interruption
(complete boiler shutdown)
heating circuit with
heating circuit mixing valve
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 heating systems
– Systems with high water content:
> 115° gal/MBH
(1 MBH = 100.000 Btu/hr)
In conjunction with a Logamatic controls for constant boiler water temperatures, e.g. Logamatic 2109 or with supplementary exter-
nal programmer and aquastat
150 °F
3)
possible if, after interruption of the
operation, there is at least 3 hours
heating operation
required Required with:
– Systems with high water content
> 115 gal/MBH: 130 °F
Tab. 4 General operating conditions
1) A heating circuit with a mixing valve improves controllability and is specifically recommended for systems with several heating zones.
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.
3) Boiler water temperature control setting: when the boiler is in ON mode, the minimum boiler water temperature in the boiler must be reached
within 10 minutes, e.g. by flow rate limitation, and maintained as the minimum temperature.