10.4 Heat Demand Control Wiring
The heater input can be controlled by any one of the following heat demand control devices (control devices are wired to central heaters only):
10.4.1 Zone Sensor
The zone sensor (P/N 10081530) offers automatic control of heater input. Heater(s) modulates based on difference between sensed air temperature and the temperature setpoint. Heater modulation in response to air temperature changes is immediate. Setpoint is adjusted with the slide bar adjustment at the bottom of the sensor. ON/OFF switch (used to disable heater operation or reset heater from lockout) is located on the side of the sensor. See Page 39, Figure 22 for wiring details.
10.4.2 Thermostat
Athermostat offers automatic control of heater input. The heater control is designed for use with a standard
FIGURE 26: Thermostat Control Wiring Diagram
W wires to the heater control and does not connect the Y (cooling) and G (fan) wires to the heater control.
The heater can be used with thermostat, 24V (p/n 90425100) if set to 5 cycles per hour. Any other electronic thermostat without heat anticipator can be used if set to 5 or 6 cycles per hour.
On the control, the T24 and T25 (R and W) terminals supply 24 V to power an electronic thermostat. See Page 44, Figure 26 for wiring details. Consult the factory for other thermostat wiring configurations.
Heater(s) modulates based on heater and thermostat cycle timing, history and desired setpoint by using a
It is important to note that during normal operation, heater cycle continues beyond meeting thermostat setpoint.
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| CENTRAL HEATER CONTROL | ||||
T |
| THERMOSTAT |
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W | R |
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T24 |
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| R |
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| T25 |
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| W |
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| T26 |
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| T27 | + - | INPUT | ANALOG |
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| T13 |
| THERMISTOR |
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| T14 | GND |
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| T15 | SLIDE BAR |
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| T16 |
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| T17 |
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| T18 | HIGH |
| EXT. POT |
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| T19 |
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| T28 |
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| + IN - | RATE | FIRING | J10 JUMPER POSITION |
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| T29 | SHOWS "CENTRAL" | |||
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| T30 |
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| CONTROL METHOD. |
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| T31 | OUT - |
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| J10 |
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SATELLITE HEATER CONTROL | ||||
*OPTIONAL |
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SWITCH |
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THERMOSTAT |
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T24 |
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T25 |
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| W |
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T26 |
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T27 | + - | INPUT | ANALOG | |
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T13 |
| THERMISTOR |
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T14 | GND |
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T15 | SLIDE BAR | |||
T16 | ||||
GND |
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T17 | HIGH |
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T18 |
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WIPER GND |
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T19 |
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T28 |
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T29 | + IN - | RATE | FIRING | |
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T30 |
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| J10 JUMPER POSITION | |
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| SHOWS "SATELLITE" DESIGNATION. | |
| RATE | FIRING | ||
T31 | OUT - | |||
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| J10 | |
MODULATION CONTROL WIRING
TO ADDITIONAL SATELLITE
HEATER CONTROL TERMINALS
*Separate on/off switch is optional for "satellite" heaters (install at user level).T28 AND T29. On/Off switch is used to disable heater operation or reset a heater that is in "lockout" mode. If on/off switch is not desired, leave jumper wire between R and W terminals in place.
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