![Filter Status Switch —](/images/new-backgrounds/33923/3392347x1.webp)
50HCQA
On 50HCQ units equipped with
Filter Status Switch —
This function is available only when PremierLink is configured for (Space) Sensor Mode.
PremierLink control can monitor return filter status in two ways: By monitoring a
Using switch input: Install the dirty filter pressure switch according to switch manufacturer’s instructions, to measure pressure drop across the unit’s return filters. Connect one side of the switch’s NO contact set to CTB’s
Filter Switch (NO, close on rising pressure (high drop))
CTB
Thermostat
R
TB1PL
10
C08216
Fig. 42 - PremierLink Filter Switch Connection
When the filter switch’s NO contact set closes as filter pressure drop increases (indicating
Using Filter Timer Hours: Refer to Form
Supply Fan Status Switch —
The PremierLink control can monitor supply fan operation through a
Install the differential pressure switch in the supply fan section according to switch manufacturer’s instructions. Arrange the switch contact to be open on no flow and to close as pressure rises indicating fan operation.
Connect one side of the switch’s NO contact set to CTB’s
Fan (Pressure) Switch (NO, close on rise in pressure)
CTB
Thermostat
R
TB1PL
8
C08118
Fig. 43 - PremierLink Wiring Fan Pressure Switch
Connection
Remote Occupied Switch —
The PremierLink control permits a remote timeclock to override the control’s
Connect one side of the NO contact set on the timeclock to CTB’s
Remote Occupied | CTB |
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Thermostat |
| |
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| R |
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Time Clock | TB1 | PL |
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| 2 |
C08214
Fig. 44 - PremierLink Wiring Remote Occupied
Refer to Form
Space Relative Humidity Sensor —
The RH sensor is not used with 50HCQ models at this time.
Power Exhaust (output) —
Connect the accessory Power Exhaust contactor coils(s) per Fig. 45.
Power Exhaust |
| TB1 | PL | |
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| ||
| PEC | TAN | 15 | |
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| CTB |
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| THERMOSTAT |
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| GRA | C |
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C08120
Fig. 45 - PremierLink Power Exhaust Output
Connection
CCN Communication Bus —
The PremierLink controller connects to the bus in a daisy chain arrangement. Negative pins on each component must be connected to respective negative pins, and likewise, positive pins on each component must be connected to respective positive pins. The controller
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