12
Technical data
Installation and operating instructions
69
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
12.1.3
Integrated gas boiler
Type (1)
(30)
GCU compact (Biv)
Individual
Unit
315 / 515
320 / 520
524
528
Permitted ambient temperature
°C
1 – 40
Product ID (CE number) (3)
(30)
CE-0063 CR 3574
Automatic combustion control
Elster CM434-R1
Safety gas control block
Elster CES10
Burner fan
ebmpapst NRG 118/0800-3612
Burner weight
kg
0.93
0.97
Nominal heat output (80/60 °C) P
n
(6)
(30)
kW
2.9 – 14.6
2.9 – 19.5
3.9 – 23.4
(4.8 – 23.4)
(31)
3.9 – 27.2
(4.9 – 27.2)
(31)
Nominal heat output with condensation (50/30 °C) P
nc
kW
3.2 – 15.7
3.2 – 20.9
4.3 – 25.0
(5.4 – 25.0)
(31)
4.3 – 29.1
(5.4 – 29.1)
(31)
Rated thermal load Q
n
(5)
(30)
kW
3.0 – 15.0
3.0 – 20.0
4.0 – 24.0
(5.0 – 24.0)
(31)
4.0 – 28.0
(5.0 – 28.0)
(31)
Device type (2)
(30)
B
23
, B
23P
, B
33
, B
53
, B
53P
,
C
13
, C
33
, C
43
, C
53
, C
63
, C
83
, C
93
NOx class (acc. to EN 15502-1) (4)
(30)
6
NOx output (with reference to calorific value H
S
)
mg/kWh
23
31
31
31
Boiler body water content
litres
0.5
0.8
Max. permissible operating pressure (12)
(30)
bar
3.0
Max. permissible operating temperature (13)
(30)
°C
85
Max. boiler efficiency
%
108
Flue gas / air infeed connection diameter
mm
DN 60/100
(DN 80/125 with SET GCU1)
Tab. 12-3
Technical data for GCU compact gas burner
12.1.4
Integrated heating circulation pump, 3-way valves
Parameters
Unit
Heating circulation pump
Type
Grundfos UPM3K 25-75 CHBL RT
Voltage
V
~230
Frequency (voltage supply)
Hz
50
Maximum power consumption
W
60
Protection type
IPX4D
Permitted overpressure
bar
3
Maximum pumping height
m
7.5
Energy efficiency
EEI<0.2 (EN 16297‑3)
3-way valves: 3UV DHW / 3UVB1
Type
AFRISO USV
Voltage
V
~230
Frequency (voltage supply)
Hz
50
Maximum power consumption
W
7
Protection type
IP 54
Turnaround time
s
75
Tab. 12-4
Technical data for heating circulation pump, 3-way valves
(30)
Value in brackets corresponds to item number in
(31)
Liquid gas setting
Summary of Contents for GCU compact Series
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