USER MANUAL CENTRAL HEATING BOILER TYPE C38GC25; C38GC25-P; C38GC29; C38GC35; C38GC35-CH1; C38GC35-CH2
REV. 01.07.2019
10 din 37
Tab.1 Technical characteristics C38GC25-P
(*)-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
Type
C38GC25-P
Gas category to be used
I
2H (GN-G20)
Flue type
Forced
Burning room
Condensing
Efficiency stars (dir. 92/42/CEE)
****
Nox class
5
Heating energy efficiency class
A
DHW energy efficiency class
A
Min/Max CH power (kW)
kW
2,8/26,7
Max power 80/60 (kW)
kW
25,6
Max power 50/30 (kW)
kW
28,2
Output performance at nominal heat input at
80/60 °C (PCI) (%)
%
97
Output performance at nominal heat input at
50/30 °C (PCI) (%)
%
106
Consum nominal maxim de combustibil
mc/h
2,82
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
12 l/min with flow restrictor *
13,5 l/min without flow restrictor *
Electrical
characteristics
Power
~230VAC/50 Hz
Nominal power
81 W
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Height
722 mm
Width
415 mm
Depth
330 mm
Height with installed elbow
860 mm
Pimary heat exchanger capacity
~35 kg
Height
~1,4 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
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
Protection class
Class IP40
Informative values:
Maximum water capacity in central
heating installation
200 l
