B
LACKHEAT
®
HE I
NSTALLATION
O
PERATION
AND
S
ERVICE
M
ANUAL
54 of 73
SECTION 13: WIRING
Connect to the electrical supply using the po
w
er
w
ire
coming out of the
w
ire gland
v
ia a locally mounted IP55
protected double pole fused s
w
itch ha
v
ing a minimum
disconnection of 3 mm on each pole. This s
w
itch should
be fused to 3 amps. There are no control connections in
the standard burner. Control is affected by interruption of
the main po
w
er inlet.
See Page 54, Section 13.1
through
Page 55, Section 13.4
for the external
w
iring details for
the single-burner, double linear and multiburner heater
systems.
If the IP55 protected fan MB 56 2BM is used
w
ith a single
burner (linear or U-tube), it must be
w
ired as sho
w
n
on
Page 55, Section 13.2
.
The fan must be protected
w
ith a 3 A fuse.
All
w
iring must comply
w
ith current
w
iring regulations and
any local regulations
w
hich may apply. Al
w
ays s
w
itch off
the supply to the burner before remo
v
ing the burner side
panel.
For lockout indication, establish connection inside burner
w
ith grey
w
ire and ignition module connection CON 5 Pin
4.
13.1 Typical External Wirin
g
Dia
g
ram (Linear or U-Tube)
DANGER
Electrical Shock Hazard
Disconnect electric before service.
Heater must be properly grounded.
Failure to follow these instructions can result
in death or electrical shock.
Burner 1
Fan 1
Earth
Burner 2
Fan 2
Burner 3
Fan 3
Controller or
Thermostat
230 V
1 Ø
50 Hz
L
N
Earth
N
L
Blue
Gr
een
Blac
k
Blue
Br
ow
n
Gr
een/Y
ello
w
4 Wire Cable
{
Blue
Gr
een
Blac
k
Blue
Br
ow
n
Gr
een/Y
ello
w
4 Wire Cable
{
Blue
Gr
een
Blac
k
Blue
Br
ow
n
Gr
een/Y
ello
w
4 Wire Cable
{
