Unical KUTter R 28, Installation And Servicing Manual

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19
Technical Features
ENGLISH
2.5 - gENErAL fEATUrES
2.4.1 - DATA AccOrDINg TO ErP DIrEcTIvE
KUTTER r 28 B 28
Appliance category II
2H3P
II
2H3P
Minimum heat. circuit output (∆t 20 °C) l/min 2,97 2,97
Minimum heating circuit pressure bar 0,5 0,5
Maximum heating circuit pressure bar 3 3
Primary circuit content l 2,2 2,2
Maximum operating temperature in heat. °C 85 85
Minimum operating temperature in heat. °C 30 30
Expansion vessel total capacity l 12 12
Expansion vessel pre-load bar 1 1
Maximum system capacity
(max temp. calc.)
l 246,5 246,5
Minimum domestic hot water circuit flow rate l/min. - 2,5
Minimum domestic hot water circuit pressure bar - 0,5
Maximum domestic hot water circuit pressure bar - 8
Domestic hot water specific flow rate (∆t 30 °C) l/min. - 17,6
Domestic hot water flow rate limiter l/min. - 12
Production of D.H.W. in continuous operation with ∆t 45 K l/min. - 8,56
Production of D.H.W. in continuous operation with ∆t 40 K l/min. - 9,62
Production of D.H.W. in continuous operation with ∆t 35 K l/min. - 11,00
Production of D.H.W. in continuous operation with ∆t 30 K l/min. - 12,83
Production of D.H.W. in continuous operation with ∆t 25 K (*) l/min. - 15,4
Temperature adjustable in domestic hot water mode °C - 25-65
Voltage/Frequency electric power supply V-Hz 230/50 230/50
Fuse on the power supply A (F) 4 4
Protection rating IP X5D X5D
Net weight kg 86
Gross weight kg 99
DHW Expansion vessel pre-load bar 2,5
Expansion vessel DHW total capacity l 3
Capabilities water tank l 50
(DHW available at a temp. of 45°C in (**) l. - 151
F factor - 2
R factor -
(*) Mixing water
(**) the first 10 mins of draw-off with storage tank water at 60°C and cold water at 10°C
Description KUTTER r 28 B 28
symbol Unit
Nominal Heat Output Pnominale kW 26,9 26,9
Seasonal space heating energy
efficiency
ƞ
s
% 93 93
Seasonal efficiency class in
heating mode
A A
for cH only and combination boilers: useful heat output
Useful Heat Output in high-temperature regime
(Tr 60 °C / Tm 80 °C)
P
4
kW 15,76 15,76
Useful efficiency at nom. heat output
in high-temperature regime (Tr 60 °C / Tm 80 °C
ƞ
4
% 97,0 97,0
Useful heat output at 30% of nom. heat output
in low-temperature regime (Tr 30 °C)
P
1
kW 5,23 5,23
Useful efficiency at 30% of nom. heat output
in low-temperature regime (Tr 30 °C)
ƞ
1
% 108,6 108,6
Range-rated boiler: YES / NO NO NO
Auxiliary electricity consumption
At full load elmax kW 0,095 0,146
At part load elmin kW 0,051 0,023
In stand-by mode P
SB
kW 0,001 0,001
Other items
Stand-by heat loss P
stb
kW 0,084 0,084
Emissions of nitrogen oxides NOx mg/kWh 43,0 43,0
for cH & DHW production boilers
Declared load profile - L
Energy efficiency in DHW production mode ƞ
wh
% 53,2 53,2
Daily electricity consumption Qelec kWh - -
Daily fuel consumptionl Qfuel kWh 21,9 21,9
Inside sound power level Lwa dB (A) 53,2 53,2
Seasonal efficiency class
in DHW production mode
-
b