OPTIONAL FEATURES HeatNet Control V3
Page 70
Subordinate Control
Subordinate Minibus Settings
The first and last Heat Exchanger must have the minibus
terminated for the bus to work properly. S1 would be placed
in the ON position as indicated below for the front and rear
heat exchangers. The jumper, JS1 must always be in the
position indicated (closest to S1). It is used for testing
When these roles are set, the minibus connector board will
blink its LEDs. There is a green LED for transmit data and an
Amber for receive data. The Manager starts/stops all
Subordinate boilers and monitors their activity, so its transmit
LED will be very active.
Color Display Wiring
The manager and subordinate controls are all connected to the
color display using ribbon cables. There are 3 connectors on
the bottom of the display. Each control has a designated
connection position depeding on its role.
In Addition to the control and status information that is
transferred between HeatNet controls there are some hardware
links. These hardware links (wires) connect between the
controls to ensure all controls (including ignition) work in
unison.
They perform as a redundant check of the minibus reported
state. This prevents errant behavior if the boiler is not set up
properly.
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