Page 17
mCHP
BOILERMA
TE
A-CL
ASS
TECHNICAL SPECIFICATION
3.0
3.4 ELECTRICITY SUPPLY AND WIRING
DIAGRAMS
©
mCHP
BM-N.FC7
B
B
Bl
Bl
Bl
Bl
R
R
R
R
Br
Br
G/Y
G/Y
Br
Br
Br
Br
Br
Br
Br Br
Br
Br
Y
B
Y
B
O O
B
B
Wh
Wh
Wh
Wh
Wh
Br
Bl
Br
Wh
B
Wh
Bl
R
R
B
Br
B
Or
Wh
G/Y
Br
Br
Bl
Bl
Bl
Bl
R
Bl
Bl
R
R
R
G/Y
Br
R
R
R
R
R
Bl
Br
R
Bl
Bl
Br
Bl
R
B
Bl
B
Or
Wh
Br
Bl
Or
Wh
B
BL
Br
Bl
Bl
Br
Br
Br
B
B
Br
Bl
G/Y
G/Y
(1) Connection only used if Modulating Pump is fitted
(1)
R
Bl
Wh
Or
R
R
R
R
R
Or R
O
O
B
B
Y
Y
S4
S5
S6
ID_RESISTOR
S3
S1 & S2
FRONT
P
ANEL
Red LED
Push Button
J33
J32
J34
J28
J29
J5
J3
J30
J31
J9
L
L
N
N
E
E
M
M
M
1
2
3
5
4
PN
PL
SL_E
SL_B
SL_N
SL_R
SL_W
SL_H
PE
PE
PE
PE
L1
L2
N
N
N
N
N
PE
MCB 2
MCB 1
MCB 3
16A
6A
16A
A2 14
A2
A1 13
A1
1
3
4
2
R1
C1
HTG Switched Live
HW Switched Live
Pump Supply
from mCHP
230V ac
N
L
E
Permanent Live
(L) 230 V ac
Neutral
Main Supply 230V 50Hz 45A (10mm²
T & E cable)
GRASSLIN CLOCK
* All wire sizes 0.5mm² unless otherwise stated
2.5mm² HIGH TEMP
2.5mm² HIGH
TEMP
2.5mm² HIGH
TEMP
2.5mm² HIGH TEMP
2.5mm² HIGH TEMP
2.5mm² HIGH TEMP
2.5mm² HIGH TEMP
2.5mm² HIGH TEMP
N
L
2
3
4
1
ON
SPD1/2A
OPTIONAL EXTRA
IF FITTED
(P
AR
T No XB142)
SCALE INHIBIT
OR
2 x 3kW Heating Elements
S 3
S 4
S 5
S 6
Store overheat (T
op)
Cold W
ater IN
Domestic Hot W
ater OUT
Store Bottom
10K Resistor
Store Middle
S1 & S2
ID_RESIST
OR
SENSOR LEGEND
BLUE
Bl
BROWN
Br
GREEN /
YELLOW
G/Y
WIRE COLOUR LEGEND
BLACK
ORANGE
YELLOW
WHITE
RED
B
Or
Y
Wh
R
mCHP
BOILERMA
TE 'A' Class - N
with Clock (Factory Standard)
FACT
OR
Y FITTED CLOCK
(ST
ANDARD) OPTION
CENTRAL
HEA
TING
PUMP
DOMESTIC HOT
W
ATER
PUMP
mCHP
Modulating
Pump
2
1
4
8
9
mCHP_On/Off S/W Live (L)
Room stat S/W Live (L)
Electric_boost ON signal (SL)
mCHP_boost S/W Live (L)
Bl
Br
Br
'MODE' Switch
Neon Illuminated ON / OFF Switch
B
7
3
6
5
N
L
ML
DRN.
3
1
2
8
7
6
5
4
A
B
C
D
E
REV
.
DRG. NAME
DRG. SIZE
JOB No.
JOB NAME
TITLE
DA
TE
APP'D.
CH'KD.
DA
TE
DO NOT
SCALE FROM
THIS DRA
WING. COPYRIGHT
OF
THIS
DRA
WING IS RESER
VED. IT
IS NOT
TO BE REPRODUCED
COPIED OR DISCLOSED
TO
A
THIRD P
AR
TY
EITHER
WHOLL
Y OR IN P
AR
T WITHOUT
OUR WRITTEN CONSENT
.
0
Electrical Schematic for mCHP
BOILERMA
TE 'A' class N
appliance with (standard) factory fitted clock
ISSUE No : 1
APPROVED
DA
TE : JUNE 2006
00 /
A3
SYCAMORE TRADING ES
TATE
SQUIRES GATE LANE
BLACKPOOL
LANCAS
HIRE
FY4 3RL
GLEDHILL WATER S
TORAGE LTD.
28-09-04
P. Ganderton
GLEDHILL
W
ATER ST
ORAGE L
TD.
S. Gataora
S. McGachie
04-1
1-04
FiGURE 3.6
Summary of Contents for mCHP BMA 225
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