TABLE 20
SL280DFV, Non−Communicating Thermostat with Humidity Control Feature and Single−Speed Outdoor Unit
OPERATING |
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SEQUENCE |
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| Thermostat Demand |
| Relative Humidity |
| Blower |
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System |
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Step |
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| Compressor | CFM | Comments | |
Condition | Y1 | O | G |
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| Status | D | |||||
| 1 |
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| (COOL) |
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NO CALL FOR DEHUMIDIFICATION |
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| 24 |
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| Compressor and indoor |
Normal Operation | 1 | On | On | On |
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| Acceptable | High | 100% | blower follow thermostat | |
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| VAC | |||||||||
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| demand | |
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BASIC MODE (only active on a Y1 thermostat demand) |
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Normal Operation | 1 | On | On | On |
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| Acceptable | 24 | High | 100% | ComfortSense® 7000 |
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| VAC |
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| thermostat energizes Y1 |
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Dehumidification | 2 | On | On | On |
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| Demand | 0 | High | 70%* | and de−energizes D on a |
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| call for de−humidification | |||||||||
Call |
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| VAC | ||||||||
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PRECISION MODE (operates independent of a Y1 thermostat demand) |
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Normal Operation | 1 | On | On | On |
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| Acceptable | 24 | High | 100% |
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| VAC | Dehumidification mode | ||||||||
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| begins when humidity is |
Dehumidification |
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| 0 |
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2 | On | On | On |
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| Demand | High | 70%* | greater than set point | ||
call |
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Dehumidification |
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| 0 |
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1 | On | On | On |
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| Demand | High | 70%* | thermostat will try to main- | ||
call ONLY |
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| tain room humidity set- | ||
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| point by allowing the room |
| Jumpers at indoor unit with a single stage outdoor unit |
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| space to maintain a cooler | |||||||||
| With Condensing unit − Cut W914 (R to DS) on SureLight® board |
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| room thermostat set- | ||||||||||
| With Heat Pump − Cut W914 (R to DS) & W951 (R to O) on SureLight® board | |||||||||||
| point** | |||||||||||
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ComfortSense® 7000 thermostat to use for this application − Y2081 4 heat / 2 cool *Dehumidification blower speed is 70% of COOL speed for all units .
**In Precision mode, ComfortSense® 7000 thermostat will maintain room temperature up to 2 °F (1.2°C) cooler than room setting.
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