Commissioning And Testing - IDEAL HE24 Installation And Servicing

37 FUNCTIONAL FLOW WIRING DIAGRAM
thermistor
DHW Preheat
Switch
b
b
b
b
DHW Thermistor
b
b
DHW Flow Switch
LEGEND
b - blue
or - orange
bk - black pk - pink
br - brown
r
gy - grey v - violet

38 COMMISSIONING AND TESTING

A. Electrical Installation
1. Checks to ensure electrical safety should be carried out by
a competent person.
2. ALWAYS carry out the preliminary electrical system checks,
i.e. earth continuity, polarity, resistance to earth and short
circuit, using a suitable test meter.
WARNING.
34
INSTALLATION
Dry fire
b
b
w - white
- red
y - yellow
y/g - yellow/green
Whilst effecting the required gas soundness test and purging air from the gas installation,
open all windows and doors, extinguish naked lights and DO NOT SMOKE.
br
Summer/winter
switch
bk bk
(optional)
bk
b
Water
pressure
switch
gy
v
r
esp8889
B. Gas Installation
1. The whole of the gas installation, including the meter,
should be inspected and tested for tightness and purged
in accordance with the recommendations of BS. 6891.
In IE refer to IS.813:2002.
2. Purge air from the gas installation by the approved
methods only.
Esprit -
L
R1
External
Switch
R2
e.g.
room'stat
Prog.
r
R3
br
b
N
E
bk
Diverter
br
Val ve
b
Installation and Servicing