Features and technical data
22
1
voltage-free NO contact.
This system allows for a control similar or equivalent to that of
the system (2), depending on the type of request device used;
also, in this case a water setpoint can be used, fixed or calculated
according to the climatic curve managed by the unit.
Using a commercially available device it is generally not possible
to obtain on the device a reporting of the unit alarm. In case,
refer to the Paragraph 4.5
p. 37 for the connection instructions
of a alarm status indicator lamp.
For connection of the selected device to the appliance's
electronic board please refer to Paragraph 4.4
1.9
TECHNICAL CHARACTERISTICS
Following K18 Hybrigas technical data apply also to K18 Hybrigas EVO, unless otherwise expressly specified.
Table 1.2
K18 Hybrigas 37/2 technical data
K18 Hybrigas 37/2
Heating mode
Seasonal space heating energy efficiency class
(ErP)
medium-temperature application (55 °C)
-
A++
low-temperature application (35 °C)
-
A+
Operating point A7W50
thermal power
kW
36,6
Operating point A7W35
thermal power
kW
37,9
Heating capacity
nominal (1013 mbar - 15 °C)
kW
29,4
real
kW
29,2
minimum
kW
2,9
Hot water delivery temperature
maximum for heating
°C
65 (1)
Hot water return temperature
minimum temperature in continuous operation
°C
25 (2)
Heating water flow
nominal
l/h
2000
Ambient air temperature (dry bulb)
maximum
°C
40
minimum
°C
-10
DHW mode
Nominal thermal power for DHW at 20 °C ambient
kW
37,9 (3)
Specific capacity in continuous operation - Δt 30°C
l/min
30,0 (4)
DWH delivery temperature
maximum for DHW
°C
70 (3)
DHW inlet temperature
maximum for DHW
°C
60 (3)
Electrical specifications
Power supply
voltage
V
230
type
-
single-phase
frequency
50 Hz supply
50
Electrical power absorption
nominal
kW
0,44
Degree of protection
IP
-
25
Installation data
Gas consumption
methane G20 (nominal)
m³/h
3,10 (5)
G30 (nominal)
kg/h
2,29 (6)
G31 (nominal)
kg/h
2,27 (6)
Water fitting
type
-
M
thread
“ G
3/4
Gas connection
type
-
M
thread
“ G
3/4
Fume outlet
diameter (Ø)
mm
80
residual head
Pa
70
Boiler fume outlet
diameter (Ø)
mm
80
residual head
Pa
100
Type of installation (heat pump)
type of installation
-
B23P, B53P
Type of installation (boiler)
type of installation
-
B23P, B33
NO
x
emission class
-
5
Dimensions
width
mm
1452
depth
mm
752 (7)
height
mm
1348
Weight
in operation
kg
295
Sound pressure L
p
at 5 metres (max)
dB(A)
43,0 (8)
Sound pressure L
p
at 5 metres (min)
dB(A)
40,0 (8)
Maximum water pressure in operation
bar
4
Maximum condensation and defrosting water flow rate
l/h
17,5
(1)
Value in combined operation. 80 °C for boiler only operation (half of the total available power).
(2)
In transient operation, lower temperatures are allowed.
(3)
Only for EVO version.
(4)
Only for EVO version. 10 minute peak collection of domestic hot water. The exact value depends on the performance of the DHW buffer tank.
(5)
PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).
(6)
PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).
(7)
Dimensions including flue gas discharge.
(8)
Sound pressure values in free field, with directionality factor 2, obtained from the sound power value in compliance with standard EN ISO 9614. Sound power Lw 65 dB(A) at maximum
ventilation, 62 dB(A) at minimum ventilation; sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614.