Electrical Connections - Potterton iHE 100 Installation & Servicing Instructions Manual

2.16 ELECTRICAL CONNECTIONS

This appliance must be earthed
Isolate the mains electrical supply before
starting any work and observe all relevant
safety precautions
External wiring to the appliance must be installed
in accordance with current I.E.E. Regulations for the
wiring of buildings and to any Local Regulations
that may apply.
The appliance is designed to operate from a 230V,
single phase supply fused at 5 amps. Mains input
cable should be at least 0.75mm
The method of connection to the mains electricity
supply should facilitate complete electrical isola-
tion of the appliance. A fused double pole switch
or fused spur box serving only the heater may be
used.
The point of connection to the mains electricity
supply should be readily accessible and adjacent
to the appliance, and should be connected to the
mains supply as detailed above.
iHE
2 , 3 core cable.
ELECTRICAL CONNECTIONS
230 Volts
L Br
230V 50Hz
5A
N
MAINS B
SUPPLY
IN
E G/Y
QX23
R
N
B
E
G/Y
QX21
Or
QX22
Gy
N
B
E
G/Y
QX23 R/B
N
B
E
G/Y
1
2
3
4
5
A
CCESS TO THE TERMINAL CONNECTIONS
Remove the Side Access Panel (See Fig 1.1) to expose
the electrical connections.
A permanent live supply must be connected to the
appliance. Automatic timed or remote operation of the
appliance can be achieved by connecting to the volt
free "Remote Enable" terminals after removing the
link wire. (Fig. 4.2)
R I :
EMOTE NDICATORS
The appliance has a volt free (or can be used with
voltages up to 230v) output, which can be connected
to a Building Management System or a remote indica-
tor panel. This input is connected to the AGU2.5 #2 "L"
terminal.
F
AULT
Five minutes after any fault occurs within the appli-
ance an internal relay will activate and connect AGU2.5
#2 "L" to AGU2.5 #2 "QX22"
B O
URNER N
When the appliances heat engine/s are in operation an
internal relay will activate and connect AGU2.5 #2 "L"
to AGU2.5 #2 "QX21"
Low Voltage
Or
G+
HC ROOM
CONTROL
CL- Bk
UNIT RC
(QAA55/75)
CL+ R
H2
W
M W
Y
OUTDOOR
SENSOR B9
(QAC34)
Y
SPARE
BMS/REMOTE Gy
SYSTEM ENABLE
H5
Gy
BX21 G
M G
L (COMMON) P
QX21 (RUN) Bk/Gy
QX22 (FAULT)
B/Gy
H2 Bk
M
Bk
18
Fig 4.2
GB/IE