Boiler house

Level controls

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2014

2.3.9

AI-P402-10

AB Issue 7

LCS2000

Level Control Systems - Chamber Mounted

Installation and testing

of modulating boiler water level controls in external chambers

Typical installation

Warning: This document does not contain sufficient information to install

the system safely. See the Installation and Maintenance Instructions

supplied with the individual products for full details.

The Spirax Sarco LCS2000 boiler water level control systems are suitable for

automatically controlled steam boilers and provide the control and alarm functions

specified by British Standards in BS 2790, by the Health and Safety Executive

in PM5 and by SAFed (PSG2).

The LCS2000 series systems require daily manual testing as specified in PM5

and a trained boiler attendant should be on site at all times the boiler is in

operation.

The level controls and level alarms are probably the most important controls on

the boiler for ensuring safety and should only be installed and maintained by

suitably trained personnel. Spirax Sarco can install, commission and provide a

regular maintenance service.

LP20 and LC2250 5 μS/cm or 5 ppm but conductivity

must not vary by more than 2:1

LC2250

controller

LC2250

AL

OK

Feedwater

control valve

Minimum conductivity

LC1350

(consult Spirax Sarco if conductivity

variation is greater).

Nominal 1 μS/cm @ 25°C minimum.

LC1350

AL

OK

LP20probe /

PA20 preamplifier

LC1350 controller

LP10-4

probe

Adaptor

1" to 1⁄2" BSP

Boiler

Chamber

High alarm

1st Low

2nd Low

Sequencing purge valves

To drain tundish or blowdown vessel

Not used

Modulating

control band