Chesil mk2 pressurisation unit

Wall hung and floor standing, single and twin pump pressurisation units for use in sealed heating systems.
Available in 5 models with single and twin pump options.

Product information

Choice of floor standing or wall hung models giving greater flexibility in plant room design.
Removes the need for cold water header tank and eliminates reliance on mains pressure to provide the system head.
Electronic controls provide enhanced user interface through back-lit LCD display.
Cold fill pressures of up to 3 bar.
Automatic system safety shut down and interlock in the event of a system fault.
Wide choice of compatible Burstock expansion vessels with sizes from 25 litres to 2000 litres.
Maintains minimum pressure requirements of low / medium temperature sealed heating sealed systems (you can read about the differences of Sealed 'v' Open Vented heating systems here).
All models compatible with Building Management Systems (BMS).
Buy in confidence from a UK manufacturer with decades of commercial heating and hot water expertise.
BIM objects available to assist in design and management.

	SW	SF	TW	TF	TFHP
Configuration	Wall Mounted	Floor Standing	Wall Mounted	Floor Standing	Floor Standing
Pump	Single	Single	Twin	Twin	Twin
Controls	Electronic	Electronic	Electronic	Electronic	Electronic

General data

	Units	SW	SF	TW	TF	TFHP
Weight (empty)	kg	23.5	25	40	40	41
Weight (full)	kg	30.5	35	49	50	51
Maximum cold fill pressure	bar	3	3	3	3	6
Minimum cold fill pressure	bar	1	1	1	1	3
Maximum water flow rate	l/min	35	35	35	35	50
Maximum water flow rate @maximum cold fill pressure	l/min	12	12	12	12	28
Noise level	dBA	<70	<70	<70	<70	<70

Electrical

	Units	SW	SF	TW	TF	TFHP
Electrical supply	230 V AC 50Hz 1Ph	230 V AC 50Hz 1Ph	230 V AC 50Hz 1Ph	230 V AC 50Hz 1Ph	230 V AC 50Hz 1Ph	230 V AC 50Hz 1Ph
Pressure transducer contact rating	4-20ma	4-20ma	4-20ma	4-20ma	4-20ma	4-20ma
Volt free contact rating	6a/240v	6a/240v	6a/240v	6a/240v	6a/240v	6a/240v
Start current (per pump motor)	Amps	7.3	7.3	7.3	7.3	24
Run current (per pump motor)	Amps	1.9	1.9	1.9	1.9	4.4

	Units	SW	SF	TW	TF	TFHP
Cold fill pressure	bar	2.5	2.5	2.5	2.5	5
Low pressure setting	bar	0.7	0.7	0.7	0.7	0.7
High pressure setting	bar	4	4	4	4	6
Expansion vessel charge pressure	bar	1.7	1.7	1.7	1.7	1.7

System parameters for factory settings

	Units	SW	SF	TW	TF	TFHP
Maximum water flow temperature	°C	80	80	80	80	80
Maximum static height	m	40.5	40.5	40.5	40.5	62
Minimum system operating pressure	bar	0.7	0.7	0.7	0.7	1
Maximum system operating pressure	bar	4	4	4	4	6
Nominal pressure differential	bar	0.3	0.3	0.3	0.3	0.3

	Units	SW	SF	TW	TF	TFHP
Mains cold water inlet	inch	1/2	1/2	1/2	1/2	1/2
Overflow (polythene pipe) diameter	mm	20	20	20	20	20
System connection compression fitting, diameter	mm	15	15	15	15	15