IDEAL INDUSTRIES HE24 General, Boiler Data Boiler Size HE 12, HE 15, HE 18, HE, Key to symbols

GENERAL

Table 1 - Boiler Data

Boiler Size							HE 12, HE 15, HE 18, HE 24
Gas supply type and connection							2H-G20-20 mbar Rc1/2		(1/2" BSP Female)
Injector size						Stereomatic 5.6mm dia. (HE 12 5.8mm dia).
Flow connection								22mm copper
Return connection								22mm copper
Flue terminal diameter			mm (in.)					100 (4)
Maximum static water head			m (ft.)					30.5 (100)
Minimum static water head			m (ft.)					0.45 (1.5)
Electrical supply								230 V ~ 50 Hz
Boiler power consumption								38W
Fuse rating							External: 3A Internal: T3.15A L250 V
Water content			litre (gal.)					1.7 (0.37)
Packaged weight			kg (lb.)					38 (84)
Maximum installation weight			kg (lb.)					31 (68)
Boiler size		Height	mm (in.)					582 (23)
		Width	mm (in.)					390 (15)
		Depth	mm (in.)					278 (11)
Table 2 - Performance Data
Boiler Size						HE 12 Max	HE 15 Max	HE 18 Max		HE 24 Max	HE 12 Min	HE 15-24 Min
Boiler input 'Q' =	Nett CV				kW	12.2	15.1	18.7		24.4	9.8	9.1
					Btu/h	41 600	51 500	63 800		83 300	33 400	31 000
	Gross CV				kW	13.5	16.8	20.7		27.1	10.9	10.1
					Btu/h	46 000	57 200	70 800		92 500	37 200	34 400
	Gas consumption			l/s (cu.ft/h)		0.35 (44.2)	0.43 (54.7)	0.53 (68.0)		0.70 (89.7)	0.28 (35.6)	0.26 (33.3)
Boiler output 'P' =	70 oC Mean water				kW	12.0	14.6	18.2		23.4	9.3	8.8
	temperature				Btu/h	40 900	50 000	62 300		80,000	31 800	30,000
	40 oC Mean water				kW	12.7	15.5	19.2		25.1	10.5	9.6
	temperature				Btu/h	43 300	53 000	65 700		85 700	35 900	32 800
Seasonal efficiency (SEDBUK) *					Band A	[90.1]%	[90.4]%	[90.3]%		[90.2]%
NOx classification								Class 5

*The value is used in the UK Government's Standard Assessment Procedure (SAP) for energy rating of dwellings. The test data from which it has been calculated have been certified by a notified body.

Note.

Gas consumption is calculated using a calorific value of

38.7MJ/m3 (1038 Btu/ft3) gross or 34.9 MJ/m3 (935 Btu/ft3) nett. To obtain the gas consumption at a different calorific value:-

a.For l/s - divide the gross heat input (kW) by the gross C.V. of the gas (MJ/m3)

b.For ft3/h - divide the gross heat input (Btu/h) by the gross C.V. of the gas (Btu/ft3)

Key to symbols

GB = United Kingdom IE = Ireland (Countries of destination) PMS = Maximum operating pressure of water

C13 C33 C53 = A room sealed appliance designed for connection via
	ducts to a horizontal or vertical terminal which admits
	fresh air to the burner and discharges the products of
	combustion to the outside through orifices which, in this
	case, are concentric. The fan is up stream of the
	combustion chamber.
I2H	= An appliance designed for use on 2nd Family gas, Group
	H only.

CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning of this appliance, care should be taken when handling edges of sheet steel components.

4 icos - Installation & Servicing