KALDAIA EXT 28/35 MTN
CONDENSATION
Wall-mounted boilers:
Thirty years of experience in designing and creating solutions for heating premises and domestic hot water have enabled us to create two ranges of high-quality boilers: condensing, both internal and external, and open-chamber with low NOx emissions. INNOVITA products are designed, tested, and manufactured entirely in our laboratories in Bosisio Parini (LC), thus guaranteeing a high level and quality of Made in Italy.
Features:
• Primary exchanger consisting of a single stainless steel coil with a large internal section to guarantee high efficiency and reduced pressure drops
• The coil structure of the exchanger guarantees easy maintenance and reduced impurity deposits
• Brass hydraulic unit for greater longevity and reliability of the boiler
• IP5XD electrical protection degree that allows installations both inside a cabinet and outdoors, in a partially protected place
• Standard electronic anti-freeze system that integrates with hot-wire electric heaters (support in the most critical points), guaranteeing boiler protection down to an ambient temperature of -15°C
• Class A modulating circulator with high efficiency and low consumption that guarantees significant electricity savings
• Active combustion control system that regulates the gas flow while always maintaining a constant air/gas ratio, thus guaranteeing both reduced fuel consumption and continuous control of polluting emissions
• Very quiet
• Modulation up to 1:9
• The arrangement of Kaldaia Ext allows quick disassembly of the main components
• ErP Ready
• CE Certification
User Interface:
Kaldaia Ext is the external condensing wall with innovative technology, easy to install and use. Designed and built in Italy, it is the technological synthesis of high reliability and optimal performance. The standard remote control, intuitive and with an advanced thermoregulation system, increases the seasonal efficiency value by 3 percentage points. This allows you to benefit from the 65% tax deduction.
Dimensions:
Kaldaia Ext 28/35
✓ MR 3/4'M
✓ AC 1/2'M
✓ G 3/4'M
✓ AF 1/2'M
✓ R 3/4'
✓ MR Heating flow
✓ AC Hot water outlet
✓ G Gas
✓ AF Cold water inlet
✓ R Heating return
Data valid for the following gases: MTN (G20) - LPG (G31)
| Kaldaia Ext 24/30 | Kaldaia Ext 28/35 | ||
|---|---|---|---|
| Application type | B23-B23P-B33-C13-C33-C43-C53-C63-C83-C13X-C33X-C43X | ||
| HEATING/DHW Nominal heat input (kW) | 24.0/30.0 | 28.0/34.6 | |
| HEATING/DHW Minimum heat input MTN (kW) | 3.5 | 4.5 | |
| HEATING/DHW Minimum heat input LPG (kW) |
5.5 | 6.0 | |
| HEATING Nominal heat output 80÷60 °C (kW) | 23.2 | 27.1 | |
| HEATING Nominal heat output 50÷30 °C (kW) | 25.2 | 29.5 | |
| HEATING Minimum heat output 80÷60 °C MTN (kW) | 3.3 | 4.3 | |
| HEATING Minimum heat output 80÷60 °C LPG (kW) | 5.3 | 5.8 | |
| DHW Nominal heat output (in average conditions) (kW) | 30 | 34.6 | |
| DHW Minimum heat output (in average conditions) MTN (kW) | 3.5 | 4.5 | |
| DHW Minimum heat output (in average conditions) LPG (kW) | 5.5 | 6.0 | |
| Useful thermal efficiency 80-60°C max-min (%) | 96.7 - 95.2 | 96.8 - 95.7 | |
| Useful thermal efficiency 50-30°C max (%) | 105.0 | 105.4 | |
| Useful efficiency at 30% of max (return at 30°C) (%) | 107.4 | 107.5 | |
| Efficiency at an average temperature of 80°60°C (%) | 96.6 | 96.9 | |
| Efficiency at 30% of average (return at 30°C) (%) | 106.3 | 107.5 | |
| Combustion efficiency (%) | 97.4 | 97.5 | |
| Heating temperature selection range (min-max) (°C) | 40-80 | 40-80 | |
| Expansion vessel pre-charge (bar) | 1 | 1 | |
| Maximum heating pressure (bar) | 3 | 3 | |
| Maximum heating temperature (°C) | 90 | 90 | |
| Continuous sanitary flow rate ΔT 30 K (l/min) | 14.3 | 16.5 | |
| Minimum domestic water flow rate (l/min) | 2 | 2 | |
| Domestic water pressure (min-max) (bar) | 6 - 0.13 | 6 - 0.13 | |
| Power supply voltage/frequency (V-Hz) | 230/50 | 230/50 | |
| Maximum total electrical power (heat-san) (W) | 87-103 | 95-121 | |
| Antifreeze heating electrical power (W) | 22 | 22 | |
| Protection index (IP) | X5D | X5D | |
| Condensation PH (PH) | 5 | 5 | |
| Maximum heating flue gas temperature MTN-LPG (°C) | 79 - 77 | 75 - 76 | |
| Boiler dimensions (HxWxD) (mm) | 770 - 450 - 245 | 770 - 450 - 245 | |
| Boiler weight (kg) | 35 | 37 | |
| Sanitary load profile | XL | XL | |
| Seasonal space heating energy efficiency class | A | ||
| Water heating energy efficiency class | A | A | |
Product Code: 30005067
