45
ENG
“heaterSteam” +0300075EN - rel. 1.2 - 29.09.2015
11. WIRING DIAGRAMS
11.1 Wiring diagram UR002-UR004 single-phase 208 V
1G 2G
1H 2H 3H
1I 2I
3I 4I 5I 6I 7I 8I
4 J
3 J
2 J
1 J
4 3 2 1
8 7 6 5
3 2 1
6 5 4
3 2 1
6 5 4
2 1
4 3
D
C
B
A
I
J
E
M
AIN BO
ARD
RELA
Y
1
H
G
C
ONTROL
MODULE
SERIAL
LINE
EXTERNAL
SIGNALS
ALARM
RELAY
1 E
2 E
3 E
4 E
5 E
6 E
1K
2K
3K
REMO
TE
ON-
OFF
K
POWER
SUPPL
Y
*
RSS2
+
RSS1
+
LN
PE
TB
F1
F2
K
1
2
2
1
F3
MS
F4
TR
K
BRIDGING C
ONNEC
TION
4D 1D
3D
3C 1C 4C
5B
4B
6B
1B
3B
4A
7A
3A
QC1
NT
C
CS
LS
DP
FV
D
T
RD
T
R1
STEAM
BOILER UNIT
ST
PT
C1
6D
AB
M1
M2
S1
S2
T1
T2
THP
2B
LL
C
5A
FA
N
FSB
RD
T
T
O
DP
T
O
STEAM
VENTILA
TED
DISTRIBUT
OR
X1
X2
T
O
WIRE
DP
S1
Fig. 11.a
* To be carried out by the installer
TB
Terminal Board
THP
Motor Protector
QC1
Fast coupling
K
Contactor
LLC
Level gauge
ST
Sensor terminal block
F1 - F2
Primary circuit fuses
F3
Drain pump safety fuse
F4
Secondary circuit fuse
FV
Feed valve
PTC
Heater temperature sensor
TR
Transformer
DP
Drain pump
LS
High level electrodes
CS
Conductivity meter electrodes
MS
Manual switch
R
Electrical resistor
SSR1-2
Solid state relay
FSB
Fan control board
FAN
Fan
RDT
Drain tempering relay
DT
Drain tempering valve
NTC
Water temperature sensor
Summary of Contents for heaterSteam UR Series
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