USER MANUAL CENTRAL HEATING BOILER TYPE C38GC25; C38GC25-P; C38GC29; C38GC35; C38GC35-CH1; C38GC35-CH2
REV. 01.07.2019
9 din 37
2.2
Constructive and functional characteristics
Tab.1 Technical characteristics C38GC25, C38GC29, C38GC35
(*)-The standard gas boiler is delivered flow restrictor of 12l/min
(**)-The standard gas boiler is delivered with dual coaxial kit as accessory; dual kit is delivered as accessory on demand
Commercial name
MKDENS25
MKDENS35
MKDENS35
Type
C38GC25
C38GC35
C38GC35
Gas category to be used
I
2H (GN-G20)
Flue type
Forced
Forced
Forced
Burning room
Condensing
Condensing
Condensing
Efficiency stars (dir. 92/42/CEE)
****
****
****
Nox class
5
5
5
Heating energy efficiency class
A
A
A
DHW energy efficiency class
A
A
A
Min/Max CH power (kW)
kW
2,8/26,7
3,0/30.6
3,5/33,9
Max power 80/60 (kW)
kW
25,6
28,3
32,8
Max power 50/30 (kW)
kW
28,2
32,4
35,8
Output performance at nominal heat input at
80/60 °C (PCI) (%)
%
97
97
97
Output performance at nominal heat input at
50/30 °C (PCI) (%)
%
106
106
106
Consum nominal maxim de combustibil
mc/h
2,82
3,24
3,59
Gas pressure
GN (on the regulator)
20 mbar (max. 25 mbar, min. 17 mbar)
GN max
35 mbar
Heating
circuit
Maximum pressure on the hot water circuit
minim 0,8 bar - maxim 3 bar
Temperature adjustment interval radiators
30÷80 °C
Temperature adjustment interval underfloor
15÷45 °C
DHW circuit
Temperature adjustment interval
30÷60 °C
Temperature adjustment interval-boiler mode 70 °C
DHW Confort EN 13203
***
***
***
Hot water flow at ∆ t = 30 °K
* flow restrictor 12l/min
12 l/min with flow
restrictor *
13,5 l/min without
flow restrictor *
12 l/min with flow
restrictor *
15,7 l/min without
flow restrictor *
12 l/min with flow
restrictor *
17 l/min without
flow restrictor *
Electrical
characteristics
Power
~230VAC/50 Hz
Nominal power
81 W
81W
81 W
C
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Height
713 mm
713 mm
713 mm
Width
415 mm
415 mm
415 mm
Depth
330 mm
390 mm
390 mm
Height with installed elbow
850 mm
860 mm
860 mm
Pimary heat exchanger capacity
~35 kg
~36 kg
~36 kg
Height
~1,4 l
~1,6 l
~1,8 l
Connec
tors
Thermal input, output
3/4‘’
Cold water input, hot water output
1/2'’
Gas input
3/4'’
Expansion vessel with membrane
7 l
7 l
7 l
Evacuation type
B23; B33; C13; C13x; C23; C23x; C33; C33x; C43; C43x; C53;
C53x; C63; C63x; C73; C73x; C83; C83x; C93; C93x
Dimensions flue type
Lenght for coaxial flue D60/D100: min. 1m - max. 20m**
Lenght for dual flue D80/D80: min. 1m - max. 20m
Flue temp. (50/30 °C)
~59 °C
~49 °C
~69 °C
Protection class
Class IP40
Informative values:
Maximum water capacity in central
heating installation
200 l
200 l
200 l