28 Packaged Heat Pump • WC-IOM-7
Installation
Smoke Detector Customer Low Voltage Wiring
When interlocking System Sensor smoke detectors together, all of the detectors
must be powered from the same power supply. If multiple smoke detectors are
required, all detectors must be disconnected from the HVAC unit power supply
and connected together from another single source supply.
Note: Do not interconnect smoke detectors together that have separate power
supplies. Do not exceed ten smoke detectors on one power supply.
Note: Multiple System Sensor smoke detectors are connected together using
terminals 1 and 12 on each detector.
If you have supply and return smoke detectors in all HVAC units, you can connect
a maximum of 5 HVAC units (10 detectors) up to one power supply. See the
following field wiring example.
If you have more than 5 HVAC units, you can connect all the supply detectors
together on one power supply (up to 10 HVAC units), and all the return detectors
together (up to 10 HVAC units) on another power supply. See the following field
wiring example.
Figure 12. Smoke detector wiring
More than 5 HVAC units
Up to 5 HVAC units
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