Benchmark Alpha E-Tec Plus 28 Installation And Servicing Instruction page 10

3.6 ELECTRICAL CONNECTIONS
Note: This Appliance Must Be Earthed
Optional integral single channel controls are available if required.
Note: Only use the Alpha single channel controls. Do not fit any two channel controls.
Programmer clock (optional)
R
3
4
R
R
Bl
Bl
Y
Br Bk
G/Y
Bk
Bl
L N A B 5 6 1 2
(L) (N) (L) (N)
R
Br Bl G/Y
Mains Supply
230 V ~ 50 Hz
Room
thermostat
Remove link to
(optional)
connect 230 V
room thermostat
3.7 DATA BADGE ANNOTATION
NOTE: Technical data is provided on the boiler data label and in Section 3.1.
Md
Sr N
o
Type
Q /Q Q /Q
nw n min. nw
PMS PMW
NO Class
x
Md.............................Model
Cod. Md ....................Model code
Sr N .........................Serial number
o
CHK ..........................Check
Cod. PIN ...................PIN code
Type ..........................Type of installation (ref. CEN TR 1749)
Q .....................DHW minimum heat input
nw min.
Q .......................CH minimum heat input
n min.
Q ....................DHW maximum heat input
nw max.
Q ......................CH maximum heat input
n max.
10
Alpha E-Tec Plus 28, 33 and 38 - Technical Data
1
Bl
J2 on PCB
2
Br
J2 on PCB
Br
R Or Y
Bk Or
Bk R
40 41 38 39 38 48
44
For testing
only
B4
B9
Alpha
Climatic Control
(optional)
Cod. Md
Cod. PIN
P
n min.
n max.
D
Colour Code
X4 on PCB
Bk Black
Bl Blue
Br Brown
G
Gy Grey
G/Y Green/Yellow
Or Orange
P
R
W White
Y
Y
B4
J1 on PCB
B9
When an Alpha Climatic control is connected
to terminals 41 and 44 remove the links between
terminal blocks 1 and 2
Fig. 3.4
P
n max.
TM
P .......................Minimum heat output
n min.
P .......................Maximum heat output
n max.
PMS ..........................Maximum system pressure
PMW .........................Maximum DHW pressure
D ...............................Specific flow rate
TM ............................Maximum operating
temperature
NO Class .................NO
x
CONDENSING .........Condensing boiler
Green
Purple
Red
Yellow
External sensor (optional)
DHW inlet sensor (optional)
or Cylinder sensor (optional)
CONDENSING
Class
x