Ambirad AIRBLOC ACR Series, Instruction Manual, Page: 18 / 44

18
Overheat
Elements
AC1
-T3
THERMAL
GND
GND
GND
GND
SENSOR
DOOR
BMS
Fan Motor
DATA
GND
+12V
L3 AC2
-T3
AC1
-T2
L2 AC2
-T2
AC1
-T1
L1 AC2
-T1
F1 F2 F3 N N
The element output is connected to the right and left
side of each terminal block marked "AC1-T1”, “AC2-T1”,
AC1-T2”, “AC2-T2”, “AC1-T3” and “AC2-T3”
The fan output is connected to a 4 way connector
marked "N”, “F1”, “F2” and “F3".
The thermal trip is connected to a 2 way connector
marked "THERMAL" & “GND”
Terminal Description
AC1/2-T1 Heater Elements phase 1
AC1/2-T2 Heater Elements phase 2
AC1/2-T3 Heater Elements phase 3
N Neutral to fan
F1 Fan - low speed
F2 Fan - medium speed
F3 Fan - high speed
THERMAL Thermal Overheat trip
GND 0v Terminal
4.5 Factory Wiring - Electrically heated 9 & 12kW ONLY