Thermostat Diagrams
SETTING THE HEAT ANTICIPATOR
The following method should be used in measuring the amp draw of the control circuit to assure proper adjustment of the thermostat heat anticipator
R
R
•Wrap the “R” leg around a
•Energize the furnace in the heat mode.
•Record the reading.
•Divide this reading by 10.
•Set the heat anticipator on the thermostat to match this reading.
Example: If the reading on the amp meter is “4”, divide this by 10. The anticipator setting will be .4 amps.
A
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W | TSTAT | W |
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O | position. | O | TSTAT |
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S |
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I | ON |
| I | OFF |
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N | 3 | N | 3 | ||
G |
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| DIP switch position 3: ON |
| DIP switch position 3: OFF | ||
| Delay Period: 10 minutes. |
| Delay Period: 5 minutes. |
3.Secure the dehumidistat hot wire (typically the black lead) to the screw terminal marked “R” on the furnace integrated control module.
4.Secure the dehumidistat ground wire (typically the green lead) to the ground screw on the furnace junction box. NOTE: Ground wire may not be present on all dehumidistats.
5.Turn ON power to furnace.
To enable the dehumidify function on the integrated control module:
1.Cut the jumper wire labeled “CUT FOR DEHUM” located adjacent to the DEHUM screw terminal.
Once the jumper wire is cut, the dehumidify function is enabled during a combination call for cooling
0 | YL0 | Y | B/C | G | R | W 1 | W 2 | DEHUM |
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TWIN | DEHUMIDIFICATION | |||||||||
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| LED (YELLOW) |
0 | YL0 | Y | B/C | G | R | W1 |
| W2 | TP2 |
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| R84 |
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| R191 | DS7 |
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| DS5 | DS4 |
| DS3 |
| R85 |
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| R22 |
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| CUT FOR | W14 | W3 |
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| R128 |
| DEHUMIDIFICATION | ||
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| DEHUM |
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| R122 |
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| JUMPER WIRE | |
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| CR35 |
| (CUT TO ENABLE) |
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FOSSIL FUEL APPLICATIONS
This furnace can be used in conjunction with a heat pump in a fossil fuel application. A fossil fuel application refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means of heating (heat pump, gas furnace, or both).
A heat pump thermostat with three stages of heat is required to properly use a
Strictly follow the wiring guidelines in the fossil fuel kit installation instructions. All furnace connections must be made to the furnace
115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER)
WARNING
TO AVOID PERSONAL INJURY, ELECTRICAL SHOCK OR DEATH, DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING.
24VOLT DEHUMIDISTAT WIRING
The optional usage of a dehumidistat allows the furnace’s circulator blower to operate at a slightly lower speed during a combined thermostat call for cooling and dehumidistat call for dehumidification. This lower blower speed enhances dehumidification of the conditioned air as it passes through the AC coil. For proper function, a dehumidistat applied to this furnace must operate on 24 VAC and utilize a switch which opens on humidity rise.
To install/connect a dehumidistat:
1.Turn OFF power to furnace.
2.Secure the dehumidistat neutral wire (typically the white lead) to the screw terminal marked “DEHUM” on the furnace integrated control module.
The furnace integrated control module is equipped with line voltage accessory terminals for controlling power to an optional field- supplied humidifier and/or electronic air cleaner.
The accessory load specifications are as follows:
Humidifier | 1.0 Amp maximum at 120 VAC |
Electronic Air Cleaner | 1.0 Amp maximum at 120 VAC |
Turn OFF power to the furnace before installing any accessories. Follow the humidifier or air cleaner manufacturers’ instructions for locating, mounting, grounding, and controlling these accessories. Accessory wiring connections are to be made through the 1/4" quick connect terminals provided on the furnace integrated control module. The humidifier and electronic air cleaner hot and neutral terminals are identified as HUM and EAC.
16 | 12/04 |