12
Technical data
Installation and operating instructions
73
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
Component
Remark
Tightening torque in Nm
Temperature sensors and sensors
all
Max. 10
Hydraulic line connections (water)
Thread 1"
25 - 30
Tab. 12-11 Tightening torques
12.4
Flow rate and residual feed height
Fig. 12-2
Residual feed height GCU compact (heating side)
Δp
R
Remaining pumping height
m
H
Heating network flow rate
1
Modulation range
Fig. 12-3
Required flow rates depending on the heating output
and the dimensioned temperature spread
m
H
Heating network flow rate
Q
Heating output
12.5
Temperature sensor
Fig. 12-4
Resistance characteristics of the temperature sensor
R
S
Sensor resistance
T
Temperature
Measured tem-
perature in °C
Temperature sensor
Type
Designation
(34)
NCT
t
V1
, t
R
, t
V2
, t
AU
, t
DHW
, t
Mi
Sensor resistance in Ohms according to stand-
ard or manufacturer's data
-20
98660
-10
56250
0
33210
10
20240
20
12710
30
8195
40
5416
50
3663
60
2530
70
1782
80
1278
90
932
100
690
110
519
120
395
Tab. 12-12 Resistance table of the temperature sensors (for assign-
)
Safety devices
(34)
For legend, see Tab. 8-1
Summary of Contents for GCU compact Series
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