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1 Specific information
1.1 Recommendations
Note
Only qualified persons are authorised to assemble, install and
maintain the installation.
1.2
Technical data
Tab.1 Technical parameters for boiler space heaters
GTUC 334 GTUC 335 GTUC 336
Condensing boiler Yes Yes Yes
Low-temperature boiler
(1)
No No No
B1 boiler No No No
Cogeneration space heater No No No
Combination heater No No No
Rated heat output
Prated
kW 90 115 150
Useful heat output at rated heat output and
high temperature regime
(2)
P
4
kW 90.0 115.0 150.0
Useful heat output at 30% of rated heat output
and low temperature regime
(1)
P
1
kW 28.4 36.6 48.1
Useful efficiency at rated heat output and high
temperature regime
(2)
ƞ
4
% 92.3 91.4 90.9
Useful efficiency at 30% of rated heat output
and low temperature regime
(1)
ƞ
1
% 97.2 97.0 97.2
Auxiliary electricity consumption
Full load
elmax
kW 0.256 0.366 0.366
Part load
elmin
kW 0.125 0.179 0.179
Stand-by
P
SB
kW 0.006 0.006 0.006
Other characteristics
Standby heat loss
P
stby
kW 0.710 0.741 0.774
Emissions of nitrogen oxides NO
X
mg/kWh 79 99 95
(1) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature (at
heater inlet).
(2) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
Tab.2 Technical parameters for boiler space heaters
GTUC 337 GTUC 338 GTUC 339
Condensing boiler Yes Yes Yes
Low-temperature boiler
(1)
No No No
B1 boiler No No No
Cogeneration space heater No No No
Combination heater No No No
Rated heat output
Prated
kW 185 230 280
Useful heat output at rated heat output and
high temperature regime
(2)
P
4
kW 185.0 230.0 280.0
Useful heat output at 30% of rated heat output
and low temperature regime
(3)
P
1
kW 59.3 73.4 89.3
1 Specific information
300017846 - ErP01 - 31082015 3
27


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