Install Instructions

Technical information 3
9
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Logano G215 US oil/gas-fired boilers • Issue 2012/10
3.2.1 General operating requirements
3.2.2 Boiler room and environmental conditions
Operating conditions
Min. boiler water
temperature
Operating interruption
(complete boiler shutdown)
Heating circuit control with
central heating mixer
1
Min. return temperature
In combination with Logamatic control for variable low-temperature operating modes, such as Logamatic 2107
not obligatory
Operating temperatures are
safeguarded by the
Logamatic control panel
2
automatically by the Logamatic
control panel
not obligatory but advantageous
with low-temperature heating
system design 130/113 °F
Required for:
Underfloor heating systems
Systems with high water content:
>115 gal/MBH
(1 MBH = 100,000 Btu/hr)
Not obligatory, except for
operation with a modulating
burner for:
Oil combustion: 113 °F
Gas combustion: 130 °F
In combination with Logamatic control for constant boiler water temperatures, such as Logamatic 2109
or in combination with remote control and aquastat
150 °F
3
possible if, after interruption of
the operation, there is at least 3
hours heating operation
required required for:
Systems with high water
content >115 gal/MBH: 130 °F
Operation with a modulating
burner: 130 °F
Tab. 3 General operating requirements
1
A heating circuit with a mixer improves controllability and is specifically recommended for systems with several heating circuits.
2
If the control system does not influence the heating circuits or the a heating circuit actuating component (e. g. Pumplogic), the burner ON mode
must reach an operating temperature of 122 °F within 10 min by restricting volume flow.
3
Boiler control thermostat setting: During burner ON mode the minimum boiler water temperature in the boiler must be reached within 10 minutes
by suitable measures, such as flow restriction, and maintained as the minimum temperature.
Operating conditions Notes – Requirement in greater detail
Temperature in the boiler room +40 to +104 °F
relative humidity max. 90 % No condensation or precipitation inside the boiler room
Dust/airborne seeds – Excessive dust inside the boiler room must be avoided when the boiler is
operating, e.g.:
– dust from building work
Combustion air supplied from outside must not be excessively loaded with
dust or airborne seed; if necessary, air filters should be fitted to prevent
this:
– Air supply contaminated with dust from dirt roads and paths.
– Air supply contaminated with dust from production and processing facilities,
e.g. quarries, mines, etc.
– Airborne seed from thistles and similar
Halogen-hydrocarbon
compounds
– The combustion air must be free from halogen-hydrocarbon compounds.
– Identify the source of halogen-hydrocarbon compounds and prevent them
from entering. Where this is impossible, route combustion air from areas that
are not contaminated by halogen-hydrocarbon compounds.
Fans, which extract air from the
boiler room.
– During burner operation, no mechanical air handling equipment may be operated
that could extract combustion air from the boiler room, e.g.:
– Extraction hood
– Clothes dryer
– Ventilation equipment
Tab. 4 Boiler room and ambient conditions