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This port is used to connect to the SZ-4 Main board OR to a previous SZ-4E.
Expander Board Marked “Expander”
This port is used to connect to the “next” zone board in the system.
The easy zone touch has multiple LEDS to indicate various functions.
LEDS
Each damper has a green LED to indicate when that damper is OPEN.
All thermostat inputs have LEDS to indicate what calls are being made.
Red for heat, green for fan and amber for cooling.
Additionally, the easy zone 4 has a status LED to provide indication on the overall
performance of the board. This LED will indicate the following
Off NO power / System faulty.
- - - - - - Slow Flash System OK – Running – Normal.
- - - - - - - - Fast Flash System Ok – TEST mode.
…---…---…--- 3 short 3 long 3 short Zone input fault (see zone logic below).
Additionally, the main board has a status LED that will flash specific codes related to its
function that will impact the operation of the expander boards. Fire inhibit for example
will suspend all thermostat calls and close all dampers on all boards.
DIP Switches
Switch block 1
Switch Off On
1 - 4 Sets when the spill on this
To set the spil to open on this board when 6 or less zone open set 2&4 on.
board will open based on the total number of
zone in the system. It is a binary count. SW1=1, SW2=2, SW3=4, SW4=8.
5 Outside air function OFF Outside air function ON
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