Immergas 3.025499, Instruction And Recomendation Booklet

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59
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
BOILER TECHNICAL DATA
Domestic hot water nominal heat input kW (kcal/h) 27.4 (23537)
Central heating nominal heat input kW (kcal/h) 24.6 (21193)
Minimum heat input kW (kcal/h) 3.5 (3042)
Domestic hot water nominal heat output (useful) kW (kcal/h) 26.0 (22360)
Central heating nominal heat output (useful) kW (kcal/h) 23.6 (20296)
Minimum heat output (useful) kW (kcal/h) 3.0 (2580)
*Effective thermal efficiency 80/60 Nom./Min. % 95.8 / 84.8
*Effective thermal efficiency 50/30 Nom./Min. % 103.3 / 98.0
*Effective thermal efficiency 40/30 Nom./Min. % 104.1 / 102.6
Casing losses with burner On/Off (80-60°C) % 1.17 / 3.1
Heat loss at flue with burner On/Off (80-60°C) % 0.01 / 1.90
Central heating circuit max. operating pressure bar 3
Maximum heating temperature °C 90
Adjustable heating temperature (max operation field) °C 25 - 85
Cooling temperature adjustable with heat pump °C 7 - 20
System expansion vessel total volume l 19.7
Heating expansion vessel pre-charge bar 1.0
Total volume domestic hot water expansion vessel l 1.2
Domestic hot water expansion vessel pre-charge bar 2.5
Appliance water content l 220
Head available with 1000 l/h flow rate in direct zone kPa (m H
2
O) 46.4 (4.7)
Head available with 1000 l/h flow rate in mixed zone kPa (m H
2
O) 50.1 (5.1)
Hot water production useful heat output kW (kcal/h) 26.0 (22360)
Domestic hot water adjustable temperature °C 25 - 60
Domestic hot water circuit min. pressure (dynamic) bar 0.3
Domestic hot water circuit max. operating pressure bar 8.0
Domestic hot water performance classification according to N 13203-1

Weight of full boiler kg 456.3
Weight of empty boiler kg 230.0
Electrical connection V/Hz 230 / 50
Nominal power absorption A 1.4
Installed electric power W 250
Boiler circulator pump absorbed power W 69
Zone pump consumption W 47
Value EEI ≤ 0.20 Part. 3
Fan power absorbed power W 25
Equipment electrical system protection - IPX5D
Max temperature of combustion products °C 75
NO
X
class - 5
Weighted NO
X
mg/kWh 26
Weighted CO mg/kWh 15
Type of appliance
C13 / C13x / C23 / C33 / C33x / C43 /C43x / C53 / C63
/ C83 / C93 /C93x / B23p / B33 / B53p
Category II2H3P
3.23 TECHNICAL DATA.