Connecting Units Together In Lead/Lag Mode - nvent SPECTRACOOL N36 Instruction Manual

TO CONFIGURE THE CONTROLLER FROM SINGLE MODE TO PS MODE, SIMPLY FOLLOW BELOW
PROCEDURES
1. Before proceeding the PS mode configuration for each controller, make sure that the
communication cable is connected from one ACU to another using a shielded cable with the
shield grounded.
2. Press button to display passcode screen, the screen displays PSd on line 1 and 0000 on line 2.
3. Press button to access to passcode , the first digit of 0000 is flashing and press 2 more times
until the third digit 0000 flashes. Press
to move to the last digit 0020
4. Press arrow two times to change the 0 to 2.
5. Press button to access to folder menu and then, the screen displays ALrF
6. Press arrow to navigate to PArF, then press
7. The screen displays C, press
access to parameter H menu
Parameter
H01
H02
H03
8. Set parameter H01 to PS (primary-secondary).
Note that after H01 = PS, the snowflake icon is illuminated and line 2 changes its display
information from outlet temperature to device ID, for example, line 2 displays 01:02 where 01
indicates controller #1 and 02 indicates the total number of the controllers in a group network.
Keep in mind that the snowflake icon only illuminates on primary controller.
9. Set parameter H02 (device ID) to 1 to 10. This device ID will be different for each controller that
is connected. The controller set to 1 will be the primary controller. Use numbers sequentially and
don't skip using a number.
10. Set parameter H03 (total number of controllers connected) to 1 to 10.

CONNECTING UNITS TOGETHER IN LEAD/LAG MODE

Lead - Device ID 1
- 20 -
arrow to navigate to parameter H and then, press
Description
Mode
Device ID
Total number of the units in the
group network
Lead-Lag network connectivity
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arrow two times to change 0 to 2, then press
button to access to parameter menu
Available Range
SA (stand alone)
PS (primary-secondary)
LL (lead-lag)
1 up to 10
1 up to 10
Lag - Device ID 2
Figure 4
button
button to
PS Settings
PS (primary-secondary)
1 up to H03
2 up to 10
Default
SA
1
1
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