) connection diagram ehr2kru/w(s) – Xylem EHR IM Electrical heater series EHR (obsolete) User Manual
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7.) Connection diagram EHR2KRU/W(S)
Adding room thermostat
RTS;
Mains connection on
terminals L and N. Ground
connection on the ground
terminal on the brass
body.Remove jumper wire
between terminals 5 and 6
of the EHR terminals and
connect those to room
thermostat connections 1
and 3.
Standard:
Mains connection on
terminals L and N. Ground
connection on the ground
terminal on the brass body.
Leave the jumper wire
between terminals 5 and 6
in place
Adding timer thermostat
RTU;
Mains connection on
terminals L and N. Ground
connection on the ground
terminal on the brass
body.Remove jumper wire
between terminals 5 and 6
of the EHR terminals and
connect those to timer
thermostat connections.
Jumper for automatic
pump shut-off
Jumper for automatic
pump shut-off
Jumper for automatic
pump shut-off
Rroom-thermostat
Laing RTS
Timer
Laing RTU
L
,N
-2
3
0
V
~
/5
0
H
z
2
1
3 4
M
6
5
P
u
m
p
T
im
e
r
P
u
m
p
T
im
e
r
L
,N
-2
3
0
V
~
/5
0
H
z
2
1
3 4
M
6
5
L
,N
-2
3
0
V
~
/5
0
H
z
2
1
3 4
M
6
5
1
3
P
u
m
p
T
im
e
r
L
1
L
2
L
1
L
2
L
1
L
2