Electrical Connections - Liebert HIROSS Microface E Manuel D'utilisation

4.3

Electrical Connections

Power Supply, PTC Temperature Sensors
alternative
Microface 1
24 0 PE
Microface 1 Power Supply
24VAC , +/- 10%
(FC Glyc or FC Air only)
NOTES : If Humitemp is connected, the Return air sensor changes automatically to Supply Sensor. If no
Humitemp is connected, it is the Return Air (Control) Sensor.
Instead of the Sensors for Outdoor and Glycol also switching contacts may be used. The relevant
Delta-T Parameter must be set to "CON" in that case.
Remote On/Off, Fire Alarm, User Input 1, Clogged Filter
Microface 1
PTC 0
C 0
Open : Rem OFF Open : Rem OFF
Closed : Rem ON Closed : Rem ON
Remote ON/OFF only
NOTES : ALWAYS USE RELAYS TO CONNECT EXTERNAL CONTACTS TO THE Microface!
NEVER CONNECT EXTERNAL COMMANDS DIRECTLY TO THE Microface!
The Smoke Warning is available ONLY if the UI is set to Alarm.
The Smoke Warning DOESNOT STOP THE FAN. It only disables the Freecooling and
Freecooling actuator to 0.
If the UI is set to Warning, the second possibility. is to get a Condenser Fan 1 Fail Warning.
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FRANCAIS
PTC 5 PTC 5
C 5 C
Outdoor Sensor FC Glyc: Glycol Temp. Sensor
FC Air: Supply Air Temp. Sensor
Alternative
PTC 0
C
2400
Ohm
OK Alarm
Fire Alarm
Remote ON/OFF + Fire Alarm
Manuel d'utilisation Microface E & Hiromatic G/E rév.12.06.2002
alternative
PTC 4
5 C 4
PTC 1
0 C
Open :
Alarm or Warning
Closed : OK
Open : Smoke Warning
or Cond. Fan Fail 1
Closed : OK
User Input 1 Alarm + Smoke Warning
or + Cond. Fan 1 Fail
PTC 7
PTC 4
C 7
C 4
Return Air Temp. Sensor
or
Supply Air Temp. Sensor
PTC 2
1 C
2400
Ohm
Clogged Filter Switch
closes the
2
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