1
3
The pressure switch is attached to the damper
assembly
Release the plastic cap via two screws.
Connect the incoming cable to terminals:
1 - normally closed contact
3 - common contact
Refer to low voltage external wiring diagram for
control panel terminations.
Replace the plastic cap via two screws.
The fan damper is wired via a plug and socket arrangement. The socket is connected to the
assembly via a bracket.
Release the loose plug and
remove the cap via two screws.
Connect the incoming 24V
cable from the Control panel
onto terminals L3 and GND,
ensuring correct orientation.
Connect the incoming 4-20mA
cable from the modulation
thermostat onto terminals L1
and GND, ensuring correct
orientation.
Refer to low voltage external
wiring diagram for control panel
and modulation thermostat
terminations.
Replace the cap and plug into
socket.
CONTRACTORS
CONNECTION PLUG
FIXED CONNECTION
SOCKET
24V AC LINE
VOLTAGE
FROM PANEL
L3
L1
G
4 - 20mA
FROM
THERMOSTAT
PRESSURE
SWITCH
SCHEMATIC DIAGRAM
8 Modulation Damper and Pressure Switches
PRESSURE SWITCH CONNECTIONS
Summary of Contents for SmartCom3
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