Wiring Requirements; Physical Wiring - Lochinvar ARMOR 101 Series Instructions Manual

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Wiring Requirements

Note that when the Tank Temperature is provided by the BAS,
it needs to be refreshed every few seconds. Th is is required
in order to prevent unwanted fl uctuations in temperature. If
these values are not provided every few seconds (timeout is
programmable), the appliance will revert to its own internal
control. If this temperature is provided by the BAS, but any
of the other control signals are being provided, the BAS will
still need to refresh this input at least every 4 minutes.
Figure 7-1_Terminal Strip Connections
ModBus and BACnet Instructions

Physical Wiring

RS-485 Communication Bus
• Maximum Length = 4000 feet
• Cable Specifi cation = 24 AWG / A,B (twisted pair)
and GND Shielded, with characteristic Impedance
=
120 ohm
• Maximum Load = 32 units (32 nodes)
NOTE: Cable must be terminated with 120 ohm impedance
matching resistor on each end.
DIR #2000549759 00
TANK SENSOR
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