Potterton Titanium Combi		24kW	28kW	33kW	40kW
Gross packaged boiler weight	kg	48.6	49.2	51	51
SEDBUK rating band		A	A	A	A
NOx class		5	5	5	5
NOx levels	mg/kWhr	22.3	26	21.8	25.2
Packaged boiler dimensions (LxWxD)	mm	964 x 540 x 403
Controls
Concealed user controls		Yes	Yes	Yes	Yes
Operating mode selector switch with reset		Yes	Yes	Yes	Yes
User adjustable DHW temperature		Yes	Yes	Yes	Yes
User adjustable CH temperature		Yes	Yes	Yes	Yes
LCD operating status display		Yes	Yes	Yes	Yes
LED operating status display		Yes	Yes	Yes	Yes
Integral 24hr electro-mechanical timer		Yes	Yes	Yes	Yes
Gas
Inlet supply pressure	mbar	20	20	20	20
Maximum gas rate	m3/hr	2.61	3.06	3.6	4.36
Central heating input (max)	kW	22.7	27.4	32.1	36.4
Central heating output - condensing (max)	kW	21	25.9	30.3	34.4
Central heating output - non-condensing (max)	kW	20	24	28	32
Domestic hot water input (max)	kW	27.4	32.1	37.7	45.7
Seasonal efficiency	%	91.1	91.1	91.1	91.1
Electrical
Electrical supply	volts/Hz	230/50	230/50	230/50	230/50
Permanent live required		Yes	Yes	Yes	Yes
Power consumption	watts	155	155	160	160
Boiler IPX rating (electrical protection)		IPX5D	IPX5D	IPX5D	IPX5D
Integral 'boiler only' frost thermostat		Yes	Yes	Yes	Yes
Mechanical
Wall mounting jig		Yes	Yes	Yes	Yes
Isolating valves		Yes	Yes	Yes	Yes
Gas supply connection	mm	22	22	22	22
Central heating connections	mm	22	22	22	22
Domestic hot water connections	mm	15	15	15	15
Condensate drain connection	mm	21.5	21.5	21.5	21.5
Safety discharge connection	mm	15	15	15	15
Filling loop kit		Yes	Yes	Yes	Yes
Hydraulic
Domestic hot water output (raised 35°C)(max)	l/min	9.8	11.5	13.5	16.4
Domestic hot water operating flow rate (min)	l/min	2	2	2	2
Domestic hot water operating pressure (min)	bar	0.15	0.15	0.15	0.15
Domestic hot water system pressure (max)	bar	8	8	8	8
Safety discharge pressure	bar	3	3	3	3
Integral automatic bypass		Yes	Yes	Yes	Yes
Integral expansion vessel capacity	litres	8	8	10	10
CH system capacity (max)	litres	125	125	155	155
Concentric flue systems
Concentric flue diameters	mm	60/100 and 80/125
Concentric flue length	mm	685	685	685	685
Max equiv vertical length (Ø 60/100)	m	10	10	10	10
Max equiv vertical length (Ø 80/125)	m	20	20	20	20
Max equiv horizontal length (Ø 60/100)	m	10	10	10	10
Max equiv horizontal length (Ø 80/125)	m	20	20	20	20
Twin flue system
Twin pipe flue diameter	mm	80/80	80/80	80/80	80/80
Max equiv vertical length	m	15	15	15	15
Max equiv horizontal length	m	15	15	15	15
Plume displacement kit
Max equiv vertical length	m	14	8	8	8