Powermax HE

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Potterton Powermax HE

The Potterton Powermax HE combines a condensing stainless steel heat engine, unvented Duplex stainless steel domestic hot water cylinder, pump and programmer in a single package - virtually 'a system in a box'. Installation is reduced to just seven pipework connections plus the flue, which is available in a wide range of options for freedom of siting the boiler and the flue terminal.

High performance central heating and hot water in one box. For a complete installation just add the flue kit, radiators, valves and pipework.

Three models to suit the majority of situations, serving up to 2 bathrooms, an en-suite, a cloakroom and a kitchen
DHW flowrates up to 48 l/min - filling a bath in around 5 minutes
Operates at water pressures as low as 1.0 bar
Rapid recovery of store (15-20 mins)
Output modulating down to 6.7 kW for maximum efficiencyv
Automatic by-pass for systems with thermostatic radiator valves
Integrated and pre-wired 7 day 3 period electronic programmer with battery back up
On-board diagnostic functions with LED display
Built-in frost protection
User selectable hot water store temperature
Boiler heat exchanger and storage cylinder in high quality stainless steel
Cylinder guaranteed 10 years
Optional back-up electric immersion heater
Comprehensive concentric and twin pipe flue options

	85 litre	115 litre	150 litre
Price	£	£	£

Price List being updated. Sorry for the inconvenience. Please call

Powermax	Units	85 litre	115 litre	150 litre
Max Heat Input	kW	25.8	25.8	25.8
Max Output to CH (non condensing)	kW	22.6	22.6	22.6
Max Output to CH (condensing)	kW	24.0	24.0	24.0
Min Output to CH (non condensing)	kW	6.7	6.7	6.7
Min Output to CH (condensing)	kW	7.6	7.6	7.6
Automatic modulating of CH heat output		Yes	Yes	Yes
Case height	mm	1110	1270	1460
Case width	mm	550	550	550
Case depth	mm	600	600	600
Built in programmer		2-channel, pre=programmed, back lit display, battery back-up, separate times for HW & CH, advance button, CH off selector
User adjustable DHW temperature		Yes	Yes	Yes
LED status/fault display		Yes	Yes	Yes
Seasonal Efficiency (SEDBUK) Rating	%/Class	90.5/A	90.5/A	90.6/A
Suitable for unventilated compartments		No	No	No
Min effective high and low ventilation to room	cm²	80	80	80
Min effective high and low ventilation to outside	cm²	40	40	40
Min installation clearance above	mm	250	250	250
Min installation clearance front	mm	75	75	75
NOx class		5	5	5
Max gas rate	m³/h	2.55	2.55	2.55
Inlet pressure	mbar	20	20	20
Fuel		Natural Gas
Secondary store capacity	litres	85	115	150
Secondary expansion vessel		18 litre, pre-charge 2.5 - 2.7 bar (supplied separately)
Automatic bypass		Yes	Yes	Yes
DHW temperature	°C	45 to 65	45 to 65	45 to 65
DHW flowrate ²	l/min	30	36	48
Working pressure - Primary	bar	09 - 2.5	0.9 - 2.5	0.9 - 2.5
Working pressure - DHW	bar	1.0 - 2.5	1.0 - 2.5	1.0 - 2.5
Working pressure - Mains supply	bar	1.0 - 16.0	1.0 - 16.0	1.0 - 16.0
Pressure relief valve setting	bar	3.0	3.0	3.0
Temperature/press. Relief Valve		Pre-set 95°C, 10.0 bar opening
Lift weight top section	kg	40	40	40
Lift weight bottom section	kg	40	41	43
Full weight	kg	175	208	246
Gas	mm	22- compression
CH flow & return	mm	22- compression
DHW inlet & outlet	mm	22- tube end
TPRV	mm	22- compression from tundish
Condensate outlet		Flexible pipe 500mm long, (fits 21.5mm PP overflow systems)
Inlet control group	mbar	22mm compression inlet & outlet set pressure 2.5 bar, PRV set 8.0 bar
Electric supply	V-Hz	230-50	230-50	230-50
Power consumption	W	96	96	96
Noise level	dBA	48	48	48
Optional immersion heater		3 kW at 240V, BEAB approved
CH frost protection		Yes	Yes	Yes
Concentric flue size	mm	100	100	100
Twin pipe flue size	mm	60	60	60