Key Features

• Output: 15–21kW
• Flue options: C/F, low/ high/ vertical B/F
• C/F size: 100 mm
• ErP rating: A
• Dimensions: 865(H) x 602(D) x 515(W) mm
• Flow connection: 22mm
• Return connection: 22mm
• Service access: Front/Top
• Warranty: 2 years
• AA Rating on M & XL load profile
• Riello low NOx technology
• Low component count
• Integrated 7-day programmer
• White casing
• DHW Flow: 18l/min
• Unique 'Easy-Fit' balanced flue system - 1 flue fits all boilers
• Riello low NOx technology
• Patented stainless steel heat exchanger

What's Included

• Warmflow Agentis 15-21kW Internal Combination Oil Boiler - I21C
• Factory fitted Grundfos UPM3 FLEX AS circulating pump
• DHW Expansion vessel
• DCW Inlet shut-off valve
• Factory-fitted DCW pressure reducing valve
• Push-in O-ring fittings
• 24l Factory-fitted, hinged, expansion vessel

Warmflow Agentis 15-21kW Internal Combination Oil Boiler - I21C Overview

The Warmflow Agentis 15-21kW Internal Combination Oil Boiler - I21C features Warmflow's unique patented heat exchanger and Riello Low NOx technology for seamless integration and quiet operation for heat and hot water within any indoor application.

Slimline Design and Extras

This internal combi boiler features a slim design to fit into kitchen and utility rooms and features a Unique 'Easy-Fit' balanced flue system with multiple options available, a white casing and an A ErP rating. 

It also comes equipped with a 24l Factory-fitted, hinged, expansion vessel, a factory-fitted DCW pressure reducing valve and a domestic hot water expansion vessel.