TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS • HEATMASTER 25 / 35 TC
HM 25 TC
HM 35 TC
Central heating
Natural gas
Propane
Natural gas
Propane
Max. heat input
kW
24,95
24,95
34,9
30,6
Min. heat input
kW
10,2
10,2
10,0
10,0
Max. useful power 80/60°C
kW
24,29
24,29
34,1
29,9
Min. useful power 80/60°C
kW
9,8
9,8
9,8
9,8
Efficiency at 30% load [EN677]
%
107,5
107,2
108,5
106,2
Efficiency in domestic hot water mode [Δt = 30°C]
%
105,9
105,9
105,9
105,9
Flue gas
CO emissions (max./min. power)
mg/kWh
70 / 6
105 / 17
70 / 6
105 / 17
NOx emissions (max./min. power)
mg/kWh
59 / 29
72 / 31
59 / 29
72 / 31
NOx class [EN483]
5
5
5
5
Flue gas temperature - Max output power 80/60°C
°C
58
58
60
60
Flue gas temperature - Max. output power 50/30°C
°C
35
35
35
35
Mass flow rate of combustion products
kg/h
41
41
55
46,5
Flue-gas duct - max. pressure drop
Pa
130
130
130
130
Concentric flue gas channel max. length
m
20
20
20
20
Gas
Gas pressure
mbar
20 / 25
30 / 37 / 50
20 / 25
30 / 37 / 50
Gas flow rate G20
m
3
/h
2,64
—
3,7
—
Gas flow rate G25
m
3
/h
3,1
—
4,3
—
Gas flow rate G31
kg/h
—
1,95
—
2,37
CO
2
[max power]
% CO
2
8,99
10,5
9,4
10,5
CO
2
[min power]
% CO
2
6,67
10,1
9,0
10,1
Hydraulic parameters
Max operating temperature
°C
90
90
90
90
Total capacity
L
201,5
201,5
201,5
201,5
Heating circuit capacity
L
101,1
101,1
101,1
101,1
Max operating pressure of the heating circuit
bar
3
3
3
3
Heat exchanger pressure drop [ΔT = 20]
mbar
15
15
30
30
Electrical connection
Class
IP
30
30
30
30
Supply voltage
V/Hz
230/50
230/50
230/50
230/50
Maximum absorbed electric current
A
0,8
0,8
0,8
0,8
Drained weight
kg
174
174
174
174
DOMESTIC HOT WATER PROVISION • HEATMASTER 25 / 35 TC
System operating at 90°C
HM 25 TC
HM 35 TC
Peak flow rate at 40°C [ΔT = 30°C]
L/10’
448
472
Peak flow rate at 40°C [ΔT = 30°C]
L/60’
1084
1322
Continuous flow rate at 40°C [ΔT = 30°C]
L/h
764
1070
Peak flow rate at 45°C [ΔT = 35°C]
L/10’
370
389
Peak flow rate at 45°C [ΔT = 35°C]
L/60’
915
1116
Continuous flow rate at 45°C [ΔT = 35°C]
L/h
655
917
Peak flow rate at 60°C [ΔT = 50°C]
L/10’
230
243
Peak flow rate at 60°C [ΔT = 50°C]
L/60’
611
731
Continuous flow rate at 60°C [ΔT = 50°C]
L/h
458
642
Preheat time
minutes
45
37
EN • 7
664Y5300 • A
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