Benchmark Alpha E-Tec Plus 28 - Page 10

Alpha E-Tec Plus 28, 33 and 38 - Technical Data
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.
3.6 ELECTRICAL CONNECTIONS
Fig. 3.4
3.7 DATA BADGE ANNOTATION
Md
Sr N
o
Type
Q
nw/Qn min.
PMS
NO
x Class
Q
nw/Qn max.
PMW
Cod. Md
Cod. PIN
P
n min.
D
P
n max.
TM
CONDENSING
Md.............................Model
Cod. Md ....................Model code
Sr N
o
.........................Serial number
CHK ..........................Check
Cod. PIN ...................PIN code
Type ..........................Type of installation (ref. CEN TR 1749)
Q
nw min. .....................DHW minimum heat input
Q
n min. .......................CH minimum heat input
Q
nw max. ....................DHW maximum heat input
Q
n max. ......................CH maximum heat input
P
n min. .......................Minimum heat output
P
n max. .......................Maximum heat output
PMS ..........................Maximum system pressure
PMW .........................Maximum DHW pressure
D ...............................Specific flow rate
TM ............................Maximum operating
temperature
NO
x Class .................NOx Class
CONDENSING .........Condensing boiler
NOTE: Technical data is provided on the boiler data label and in Section 3.1.
J2 on PCB
J1 on PCB
J2 on PCB
X4 on PCB
Colour Code
Bk Black
Bl Blue
Br Brown
G Green
Gy Grey
G/Y Green/Yellow
Or Orange
P Purple
R Red
W White
YYellow
B4 External sensor (optional)
B9 DHW inlet sensor (optional)
or Cylinder sensor (optional)
3
1
2
4
Programmer clock (optional)
Remove link to
connect clock
R
Bl
Br
R
R
Mains Supply
230 V ~ 50 Hz
Remove link to
connect 230 V
room thermostat
Room
thermostat
(optional)
Alpha
Climatic Control
(optional)
When an Alpha Climatic control is connected
to terminals 41 and 44 remove the links between
terminal blocks 1 and 2
B4
B9
Br
Bl
Bk
Bl
Br
R
Or
Y
Bk Or Y
G/Y
Br
Bl G/Y
L
N
(L) (N) (L) (N)
A
B
40
44
41
38
1
2
5
6 39 38 48
For testing
only
Bk
R
Bk
Bl
R
Y
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