Niagara Advance combines technology with the convenience of two 20-liter boilers. Even the most demanding domestic hot water needs are met in every situation.
Technical Features
Model
Chaffoteaux Niagara Advance 25 kW Condensing Boiler Complete with Flue Gas Exhaust Kit
Product Code: 3310626
Methane, LPG, and propane gas operation without the need for a kit. Conversion is achieved through combustion control by selecting the gas type from the technical menu.
Energy Efficiency
Nominal heat output in heating max/min (Hi) Qn kW 22/2,5
Nominal heat output in heating max/min (Hs) Qn kW 24.4/2.8
Nominal heat output in domestic hot water max/min (Hi) Qn kW 26.0/2.5
Nominal heat output in domestic hot water max/min (Hs) Qn kW 28.9/2.8
Max/min heating power (80°C-60°C) Pn kW 21.5/2.3
Max/min heating power (50°C-30°C) Pn kW 23.6/2.6
Max/min useful power for sanitary use Pn kW 24.9/2.4
Combustion efficiency (flue gas) % 97.4
Efficiency at nominal heat output (60/80°C) Hi/Hs % 97.7/87.9
Efficiency at nominal heat output (30/50°C) Hi/Hs % 106.7/96.1
Yield at 30% of Qn
with return to 30°C Hi/Hs % 109.7/98.8
Efficiency at minimum (60/80°C) Hi/Hs % 93.5/84.2
Performance stars (dir. 92/42/EEC) ****
Performance
NOx Class 6
Flue gas temperature (G20) (80°C-60°C) °C 64
CO2 content (G20) (80°C-60°C) % 8.8
CO content (0%O2) (80°C-60°C) ppm 81.0
O2 content (G20) (80°C-60°C) % 4.3
Maximum smoke flow rate (G20) (80°C-60°C) kg/h 2.4
Excess air (80°C-60°C) % 26
Condensed pH pH 3.2
Maximum quantity of condensate l/h 26
HEATING CIRCUIT
Expansion vessel pre-charge pressure bar 1
Maximum heating pressure bar 3
Expansion vessel capacity 8 l
Heating temperature min/max (high temperature range) °C 35 / 82
Heating temperature min/max (low temperature range) °C 20 / 45
HEALTHCARE CIRCUIT
Min/max sanitary temperature °C 40 / 65
Specific flow rate in sanitary water (10 min. with ∆T=30°C l/min 13.2
Instantaneous quantity of hot water ∆T=25°C l/min 15.4
Instantaneous quantity of hot water ∆T=35°C l/min 11.0
Health comfort stars (EN13203) ***
Minimum hot water withdrawal l/min 2
Max/min domestic water pressure bar 7.0 / 0.3
ACS storage capacity l 40
Characteristics
Power supply voltage/frequency V/Hz 230 / 50
Total absorbed electrical power W 84.7
Circulator energy efficiency index EEI ≤ 0.23
Minimum ambient temperature for use °C >0
Electrical system protection rating IP X5D
Dimensions
Dimensions (Height x Width x Depth) 900 x 600 x 460 mm
Weight 42.5 kg
General Features
NIAGARA ADVANCE
MAXIMUM PERFORMANCE
New single-coil primary exchanger in stainless steel.
Passage sections increased by 142% compared to the previous version.
1 m more head.
Seasonal yield at 94%.
Class A+ achievable with thermoregulation.
Performance certified by the TÜV RHEINLAND Group.
MAXIMUM COMFORT
Modulation ratio 1:10.
Optimized internal silencer.
SRA function.
Gas conversion with kit included as standard.
Ready for Chaffolink connectivity.
HEALTH COMFORT
40-litre reserve thanks to two stratified stainless steel accumulators.
Permanent availability of domestic hot water even with empty accumulators.
Domestic hot water performance ***, maximum level foreseen by the EN 13203 standard.
Flow rate up to 19.8 l/min with ΔT = 25ºC.
Integrated 2-litre sanitary expansion vessel.
EASY INSTALLATION
Installation in partially protected places.
Flue pipes 80, 60, 50 mm.
Intuitive electrical connections.
