35
3 Lead reheater control, TRIAC and overheat protection
sensor wires through separate holes in the panel (pos.
3) to electrical connections compartment.
4
• Connect reheater control wires to the terminal
block marked as HEATER (pos. 4) on the main cir-
cuit board. Connect blue wire to N socket, brown
wire to L socket.
• Connect TRIAC wires to the terminal block marked
as TRIAC (pos. 5) on the main circuit board. Connect
black wire to G socket, brown wire to A1 socket,
gray wire to A2 socket.
• Connect overheat protection sensor to any free
analog input on the main circuit board (pos. 6).
Connect black wire to ground (GND), red fire to
analog input.
5 Place back covers of reheater and the main circuit
board and secure them with screws.
Note:
For more detailed information see a wiring diagram delivered with the unit.
Configuration
1. Go to
Service
menu
2. Enter password (default 1111)
3. Go to
Components
menu, select
Heater
menu and select type as
Electrical
. Do advanced settings if necessary.
4. Configure overheat protection sensor. Go back to
Input
menu. Select
ANALOG
tab. Select the analog input to which
the overheat protection sensor is connected. Example if it is connected to AI4 on the main circuit board, then select
ANALOG INPUT 4
and select
Overheat Temperature Sensor (OHT)
from the input type list.
5. Configure TRIAC. Go to
Output
menu. Select
ANALOG
tab then select
TRIAC OUTPUT
and set output type as
Y1
Heating
.
7.3.2
Electrical duct pre-heater
Electrical pre-heater can be installed in the outdoor air duct to pre-heat out-
door air before it reaches the unit and prevent icing in the heat exchanger.
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