Carel compactSteam CH002V1000, User Manual

Page: 16 / 28

compactSteam
Cod. +030221905 – rel 1.0 - 18 Jannuary 2006 16
3.7 Wiring Connections:
Terminals Input/Output
Type Description
N1-GND-N2 NTC NTC air proving sensor
AB-AB 24 V Bridge Remote On/Off
IN-GND 24 V Bridge Humidistat
NC-C-NO Dry contact Alarm relay
NO-C Dry contact External fan relay
24-GND 24 VAC Power for external humidistat
3.7.1 Wiring diagram of controller
DRAIN
VALVE
STEAM
BOILER UNIT
DT EVF
HL
POWER SUPPLY
(110 VAC 1-PHASE 50-60 HZ
OR
230 VAC 1-PHASE 50-60 HZ)
24 VAC FOR
EXTERNAL
HUMIDISTATS
EXTERNAL DUCT FAN
ALARM
HUMIDIST AT
REMOTE ON-OFF
NTC
PROGRAMMING
PORT
IN
G
N
D
A
B
A
B
N
1
G
ND
N2
NO
C
NC
C
N
O
24
V
ac
G
N
D
LC
D
A
N
D
KE
Y BO
A
RD
EX
T
FA
N
AL
A
R
M
KE
Y
HL
N
EVF
EVD
N
F
INT
FA N
E2
E1
L1 L2
ON/OFF
BUTTON
1
2
1
2
4
5
EMBEDDED
BLOWER
(IN CHF*)
EXTERNAL FUSED
DISCONNECT TO BE
INSTALLED (NOT
SUPPLIED) RESPECT
LOCAL CODES
KEY:
EVF = FILL VALVE
DT = DRAIN TEMPERING VALVE
HL = HIGH-LEVEL SENSOR
Fig. 3.s