IDEAL INDUSTRIES HE18 General Terminal, AIR Supply, Water Treatment, Water Circulation System

GENERAL

TERMINAL

The terminal assembly can be adapted to accommodate various wall thicknesses. Refer to Frame 10.

AIR SUPPLY

Detailed recommendations for air supply are given in BS.5440:2. In IE refer to I.S. 813:2002.

The following notes are for general guidance:

1.It is NOT necessary to have a purpose provided air vent in the room or internal space in which the boiler is installed.

2.If the boiler is to be installed in a cupboard or compartment, permanent air vents are required (for cooling purposes) in the cupboard/compartment, at both high and low levels. The air vents must either communicate with room/internal space, or be direct to outside air. The minimum effective areas of the permanent air vents, required in the cupboard/compartment, are specified in Table 4 and are related to maximum rated heat input.

Table 4 - High and low vent areas

Boiler	Air from room/internal		Air direct from
	space, cm (in2 )		outside, cm (in2)
HE9	102	(16)	51	(8)
HE12	135	(21)	68	(11)
HE15	170	(26)	83	(13)
HE18	198	(31)	102	(16)

3.Both air vents MUST communicate with the same room or internal space or MUST be on the same wall to outside air.

4.In siting the air vents care must be taken to avoid the freezing of pipework.Water circulation system.

and hot water storage vessel. They should be at least 1/2" BSP nominal size and be in accordance with BS. 2879.

The boiler is fitted with a special drain plug, which is provided, to drain the BOILER ONLY, in the event of the system drain plug being unable to do so. The hydraulic resistance of the boilers, at MAXIMUM OUTPUT with an 11OC (20OF) temperature differential, are shown in Table 5.

Maximum boiler operating temperature should be 82oC (180oF).

Table 5 - Water flow rate and pressure loss

Boiler Size	HE	9	12	15	18
Boiler	kW	9.0	12	15	18
Output Btu/h x 1000		30.7	40.9	50.2	60.4
Water Flow	l/min	11.7	15.6	19.5	23.4
Rate	gal/h	155	206	258	309
Pressure	mbar	54.0	93.5	98.4	142.5
Loss	in wg	21.6	37.4	39.3	57

WATER TREATMENT

These boilers incorporate a cast iron heat exchanger and an aluminium heat exchanger.

IMPORTANT. The application of any other treatment to this product may render the guarantee of Ideal Stelrad Group

INVALID.

Ideal Stelrad Group recommend Water Treatment in accordance with the Benchmark Guidance Notes on Water Treatment in Central Heating Systems.

Ideal Stelrad Group recommend the use of Fernox, GE Betz Sentinel or Salamander water treatment products, which must be used on accordance with the manufacturers instructions.

For further information contact:

Fernox Manufacturing Co. Ltd, Cookson Electronics, Forsyth Road, Sheerwater, Woking, Surrey. GU21 5RZ. Tel. +44 (0) 1799 521133

WATER CIRCULATION SYSTEM

The boiler must NOT be used for direct hot water supply. For the types of system and correct piping procedure refer to 'Introduction' and Frame 1.

The central heating system should be in accordance with BS.6798 and, in addition, for Smallbore and Microbore systems, BS. 5449.

The domestic hot water system, if applicable, should be in accordance with the relevant recommendations of BS. 5546. Copper tubing to BS. 2871:1 is recommended for water carrying pipework.

The hot water storage cylinder MUST be of the indirect type and should preferably be manufactured of copper.

Single feed, indirect cylinders are not recommended and MUST NOT be used on sealed systems.

The appliances are NOT suitable for gravity central heating, nor are they suitable for the provision of gravity domestic hot water.

The hot water cylinder and ancillary pipework, not forming part of the useful heating surface, should be lagged to prevent heat loss and any possible freezing - particularly where pipes run through roof spaces and ventilated under floor spaces.

Boilers not fitted to a sealed system must be vented.

or

Sentinel Performance Solutions,

The Heath Business & Technical Park, Runcorn, Cheshire WA7 4QX. Tel: 0800 389 4670. www.sentinel-solutions.net

or

Salamander Engineering Ltd, Unit 24, Reddicap Trading Estate, Sutton Coldfield, West Midlands B75 7BU. Tel. +44 (0) 121 378 0952

Notes.

1.It is most important that the correct concentration of the water treatment products is maintained in accordance with the manufacturers' instructions.

2.If the boiler is installed in an existing system any unsuitable additives MUST be removed by thorough cleansing. BS7593:1992 details the steps necessary to clean a domestic heating system.

3.In hard water areas, treatment to prevent limescale may be necessary - however the use of artificially softened water is NOT permitted.

4.Under no circumstances should the boiler be fired before the system has been thoroughly flushed.

IMPORTANT

A minimum length of 1m of copper pipe MUST be fitted to both flow and return connections from the boiler before connection to any plastic piping. This applies to ALL types of installation.

Draining taps MUST be located in accessible positions, which permit the draining of the whole system - including the boiler

BOILER CONTROL INTERLOCKS

Ideal Stelrad Group recommend that heating systems utilising full thermostatic radiator valve control of temperature in individual rooms should also be fitted with a room thermostat controlling the temperature in a space served by radiators not fitted with such a valve as stated in BS. 5449.

continued . . . .

classic HE - Installation & Servicing 9