TECHNICAL DATA SHEET
START is Riello's new, completely revamped range of condensing boilers for small and medium-sized homes, both technologically and functionally. START is available in three sizes: 15, 25, and 30 kW, in combined (KIS) and heating-only (IS) versions. One of the distinguishing features of the new START is the innovative digital control panel with touch keys, designed with a focus on ease of use.
Riello Start 25 Kis Condensing Boiler Code 20187772 LPG Low Nox Complete with Flue Gas Exhaust Kit
Seasonal space heating efficiency class A
Water heating energy efficiency class - A
Rated power P nominal kW 19
Seasonal space heating energy efficiency % 93
HEATING
Nominal heat output: kW 20.00
Nominal thermal power (80÷60 °C) kW 19.38
Nominal thermal power (50÷30 °C) kW 20.92
Reduced thermal output: kW 3.10
Reduced thermal power (80÷60 °C) kW 2.94
Reduced thermal power (50÷30 °C) kW 3.04
HEALTHCARE
Nominal thermal capacity kW 25.00
Nominal thermal power kW 25.00
Reduced thermal output kW 3.10
Reduced thermal power (*) kW 3.10
WARM-UP EXERCISE
Maximum pressure bar 3
Minimum pressure for standard operation bar 0.25
Maximum temperature °C 90
Pump: max. head available to the system mbar 408
at a flow rate of 1000 l/h
Membrane expansion vessel 8 l
Expansion vessel preload bar 1
Dimensions (hxwxd): 780x332x400 mm | 37 kg
START KIS 
START is Riello's new, completely revamped range of condensing boilers for small and medium-sized homes, both technologically and functionally. START is available in three sizes: 15, 25, and 30 kW, in combined (KIS) and heating-only (IS) versions. One of the distinguishing features of the new START is the innovative digital control panel with touch keys, designed with a focus on ease of use.
* High efficiency sanitary exchanger developed by Riello
* Modern and intuitive touchscreen HMI, with representative icons and capacitive keys with acoustic “buzzer” sound
* Modern and linear design with lower fitting cover under the boiler available as an accessory for excellent aesthetic integration
* Specific electronic health functions: health delay, anti-shutting function and smart fan
* Hydraulic group with DIN standard sequence
* Low consumption circulator (IEE?0.20) 7 m high head available as an accessory
* Easy installation, integration even in small spaces and replacement thanks to the wide choice of accessories available as optional
* Modulation ratio 1:8
* Easy maintenance and cleaning of the combustion chamber thanks to front access to the exchanger – Seasonal efficiency 93%
* 8 litre lateral expansion vessel
* Standard flue flange with dedicated flue system
* Standard thermoregulation in combination with the external probe, available as an accessory
* Possibility of built-in installation (model 25 KIS and 30 KIS) and outdoors in partially protected places (IPX5D)
* Mounting crosspiece already integrated into the boiler and power cable supplied
* Standard methane operation with the option of converting to LPG (G31) and propane gas with accessories. This conversion is the responsibility of the installer or the technical assistance service.
* IPX5D electrical protection rating.
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