IDEAL INDUSTRIES HE9, HE18, HE12, HE15 manual Electrical Connections, External Controls

INSTALLATION

INSTALLATION

41 ELECTRICAL CONNECTIONS

WARNING. The appliance must be efficiently earthed. A mains supply of 230 V ~ 50 Hz is required.

All external controls and wiring must be suitable for mains voltage. Wiring should be in 3-core PVC insulated & sheathed cable, not less than 0.75mm2 (24 x 0.2mm) to BS. 6500 Table 16 Wiring Regulations and local regulations. For IE reference should be made to the current ETCI rules for electrical installations.

Connection must be made in a way that allows complete isolation of the electrical supply - such as a double pole switch, having a 3mm (1/8") contact separation in both poles or a plug and socket, serving only the boiler and system controls. The means of isolation must be accessible to the user after installation.

1.Remove controls pod by slackening front fixing screws and pull pod forward (may find it easier to remove the controls pod door).

2.Remove the control box securing screws. Swing the box down into the servicing position. Refer to Frame 49.

3.Route the mains cable into the box from the RHS of the boiler.

4.Connect the live, neutral and earth wires into the terminal strip as shown.

5.Secure the mains lead with the cable clamp.

6.On completion of all wiring connections, relocate the control box and secure.

cla7738

cla7923 1

2

Flow wiring diagram

LEGEND
b	blue	pk	pink
bk	black	r	red
br	brown	v	violet
gy	grey	w	white
or	orange	y/g	yellow/green

				O/heat thermostat
			L brbr			Thermostat sensor
				bk bk			b		N
	Connect
	to L						y/g
			L		N
				NTC			Fan
					E
		v	NC		FAN		gy
Flue protection			C		GV 1		Pilot gas
		r					bk
			P.C.B. 25
thermostat		y					br	b
	Air pressure		NO		GV 2
Limit	switch	NC			or		Main gas
	r					pk	Potentiometer
thermostat			bk bk
	com	NO							cla7856
					w
ALL EARTHS must be connected						Combined spark &
		On/Off switch
(Not all earths are shown for clarity)						sensing electrode

42 EXTERNAL CONTROLS

External wiring must be in accordance with the current I.E.E. (BS		must be wired into the mains lead, in parallel, with the
7671) Wiring Regulations. For Ireland reference should be made		control(s) to be overridden. Refer to Frame 46.
to the current ETCI rules for electrical installations.	3.	If a proprietary system is used, follow the instructions
The wiring diagrams illustrated in Frames 43-46 cover the		supplied by the manufacturer.
systems most likely to be fitted to this appliance.	4.	System designs featuring controls or wiring
For wiring external controls to the classic HE boiler, reference		arrangements which allow the boiler to fire when there is
should be made to the system wiring diagrams supplied by the		no pump circulation taking place should not be fitted.
relevant manufacturer, in conjunction with the wiring diagrams	Advice on required modifications to the wiring may be
shown in Frames 43-46.	obtained from the component manufacturers.
Difficulty in wiring should not arise, providing the following	Notes.
directions are observed:	1.	Connection between a frost thermostat and the time
1. Controls that switch the system on or off, e.g. a time switch,
		control should be made without disturbing other wiring.
must be wired, in series, in the live mains lead to the boiler.	2.	A frost thermostat should be sited in a cool place in the
2. Controls that override an on/off control, e.g. frost thermostat,
		house, but where it can sense heat from the system.

28 classic HE - Installation & Servicing