Concord ESi

The Concord ESi is a sectional cast iron boiler, with an atmospheric two stage gas burner and electronic ignition via an ignition burner. The heat output is adjustable to 85% of full the output. The Concord ESi is suitable for natural gas only.

The combustion chamber and draught diverter are designed for use with a hot water central heating system and have a heat output range of 119-380 kW which must be connected to a chimney.

The heat exchanger can be supplied assembled, or unassembled for site assembly.

The boiler is supplied with a control panel for one and two stage burner operation. It offers boiler control by two thermostats for high/low operation, indicator lights, overheat safety thermostat and thermometer giving boiler flow temperature.

Efficiency

Features

9 models with outputs 140 to 380 kW
High/low adjustable operation on all models
Assembled or unassembled heat exchanger availability
Robust cast iron heat exchanger

Easy to install and service
Low return temperature capability
High full & part load efficiencies – meeting new Building Regulations

Specification

General Data
Dimensions & Clearances
Option Kits

Model		140	160	180	200	220	260	300	340	380
No. of sections		8	9	10	11	12	14	16	18	20
Output		140	160	180	200	220	260	300	340	380
Flow/return connections	BSP	RC2
Gas inlet	BSP	RP1	RP1	RP1	RP1	RP1	RP1¼	RP1¼	RP1¼	RP1½
Flue size	mm	250	250	300	300	300	350	350	350	400
Maximum working pressure	bar	6
Water content	L	61	68	76	84	91	106	122	137	154
Dry weight (approx)	kg	575	635	690	750	805	920	1035	1150	1350
Seasonal Efficiency (Ref L2)	%	81.71	82.02	82.33	82.64	82.87	83.18	83.44	83.67	83.91

Model		140	160	180	200	220	260	300	340	380
Height	mm	1406	1406	1406	1406	1406	1406	1406	1406	1406
Width	mm	970	1058	1146	1234	1322	1498	1674	1850	2026
Depth	mm	1362	1362	1362	1362	1362	1412	1412	1412	1412
Boiler Clearances (mm)	Front	1000
	Back	500 (measured from rear edge of jacket)
	Side	400 at water connection side, 200 at non-connection side (RH or LH)

Hours run meter (1 or 2 hours)

Flue gas thermometer