Product Features

• DHW Output: 8.8 - 23.4 kW, 30 - 80,000 Btu/h

• CH Output: 8.8 - 23.4 kW, 30 - 80,000 Btu/h

• Hot Water Flow Rate - 9.6 L/Min

• Sedbuk Rating – A

• NOX Class – 5

• Dimensions: High - 687mm, Wide - 390mm, Deep - 278mm

The isar HE

Excellent performance, reliability and ease of installation are trademarks of the Ideal combination boiler. With its minimal components and slimline construction the unit can be sited almost anywhere - even in a standard kitchen cupboard, with no additional compartment ventilation required. Other qualities such as a selfadjusting feature for easy set up and an alpha-numeric diagnostic readout giving coded appliance status, make this the most advanced combi boiler Ideal has ever produced. In addition, its excellent performance and efficiency enables the homeowner to save up to a third on gas bills.

Application and usage

The Ideal high-efficiency combi benefits from being highly versatile and is perfectly suited to homes where space is at a premium. This is enhanced by its twin-pipe fluing that gives excellent siting flexibility. The boiler is capable of meeting the heating requirements for the majority of housing needs. Condensate drainage can be overcome using the Ideal condensate pump kit.

The isar HE in operation

The isar HE is an automatically controlled, fanned flue high-efficiency boiler. The boiler modulates its heat output to suit the demands of the heating load. It incorporates a variable thermostat for CH temperature control, adjustable from 30°C to 82°C. The use of a pre-mix burner allows control of gas input to the appliance to be directly linked to fan speed. So, as the fan reduces speed to match heating load, the gas valve maintains the correct proportional flow ensuring a high boiler efficiency throughout its output range. The boiler incorporates all the necessary safety features required to fit directly onto a sealed system. The isar HE also provides DHW on demand via a high-efficiency secondary heat exchanger within the boiler casing. The boiler's ability to modulate enables a stable DHW temperature to be obtained, regardless of flow rate. 

What is SEDBUK?

SEDBUK stands for Seasonal Efficiency of Domestic Boilers in the UK and is a Government sponsored database for domestic gas and oil boilers both old and new. It enables consumers and engineers to choose an appliance based upon its efficiency and is the nearest thing the heating market has to an energy labelling system.

Band	SEDBUK Range (% efficiency)
	over 90%
	86%-90%
	82%-86%
	78%-82%
	74%-78%
	70%-74%
	below 70%