Installation instructions sdu-lon, 3installation, Connect input power – TREND SDU-LON User Manual
Page 5: Check start up reset, Check l, Network connected, Switch on input power
SDU-LON Installation Instructions TG200599 Issue 2, 6/10/08
5
Installation Instructions
SDU-LON
* If one side of the 24 Vac input power is connected to 0 V, that side must be connected to the SDU - (negative)
terminal
Connect Input Power
8
Check Start Up Reset
10
S P
E N G
1
2
3
4
Comms failure
or no sensor set up
Connect to IQ
Check L
ON
W
ORKS
Network Connected
+
L
ON
W
ORKS
(green)
SDU faulty
Switch on Input Power
9
failed to install on L
ON
W
ORKS
network; check step 7
installed on L
ON
W
ORKS
network
3
Installation
(continued)
+
+
+24 Vdc
24 Vdc Power
Supply
SDU
0 Vdc
+
+24 Vac (L)
24 Vac Power
Supply
SDU
+24 Vac (N)
24 Vdc
15 mA
24 Vac
15 mA
*
O
I
S P
E N G
1
2
3
4
SDU
24 V Power
Supply
SDU-LON V2.04
ensure
correct
polarity
11
FLASH CHECK
*
EEPROM CHECK
*
FLASH CHECK OK
EEPROM CHECK OK
* One of these will show ‘Failed’
Displays first
labelled sensor -
if set to defaults
SENSOR 1
FLOOR 1 Space Temp
20.3 DegC
SDU-LON V2.04
SDU-LON V2.04