Installation Instructions
Page 1
... APPLICATION The H8908 family of low-voltage humidistats/ dehumidistats provide accurate control of whole house humidifiers, dehumidifiers, and ventilators. Power supply can be a trained, experienced service technician. H8908A,D control. H8908B,C control. 69-1341EF-01 Read these instructions carefully...3. Check the ratings given in the instructions and on the product to follow them could damage the product or cause a hazardous condition. 2. Humidity Control Régulateur d'humidité OUTDOOR TEMPERATURE -20 °F -10 °F 0 °F +10 °F +20 °F Over...
... APPLICATION The H8908 family of low-voltage humidistats/ dehumidistats provide accurate control of whole house humidifiers, dehumidifiers, and ventilators. Power supply can be a trained, experienced service technician. H8908A,D control. H8908B,C control. 69-1341EF-01 Read these instructions carefully...3. Check the ratings given in the instructions and on the product to follow them could damage the product or cause a hazardous condition. 2. Humidity Control Régulateur d'humidité OUTDOOR TEMPERATURE -20 °F -10 °F 0 °F +10 °F +20 °F Over...
Installation Instructions
Page 4
... electronic humidity controls. 6. H8908 L1 (HOT) L2 POWER SUPPLY 1 FAN CONTROL FURNACE FAN MOTOR 30 20 40 50 10 60 OFF ON 2 TRANSFORMER 1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 24 VAC WIRING. HUMIDIFIER M24728 Fig. 13. Attach the humidistat to humidifier... shock and injury. See Fig. 6-19 for proper operation. Press the bottom of the transformer to the control. M24729 Fig. 14. H8908A/B HUMIDISTAT H8908C/D DEHUMIDISTAT WIRING CAUTION Personal Injury Hazard. All wiring must be energized during blower motor cycles for different wiring...
... electronic humidity controls. 6. H8908 L1 (HOT) L2 POWER SUPPLY 1 FAN CONTROL FURNACE FAN MOTOR 30 20 40 50 10 60 OFF ON 2 TRANSFORMER 1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 24 VAC WIRING. HUMIDIFIER M24728 Fig. 13. Attach the humidistat to humidifier... shock and injury. See Fig. 6-19 for proper operation. Press the bottom of the transformer to the control. M24729 Fig. 14. H8908A/B HUMIDISTAT H8908C/D DEHUMIDISTAT WIRING CAUTION Personal Injury Hazard. All wiring must be energized during blower motor cycles for different wiring...
Installation Instructions
Page 6
... in the table below. To reduce the relative humidity, lower the setpoint approximately three percent relative humidity every 24 hours. Recommended settings are available on . H8908A/B HUMIDISTAT H8908C/D DEHUMIDISTAT CHECKOUT Turn the H8908 dial to "ON" to test proper installation. OPERATION Humidity Control Adjustment To maintain optimal humidity levels without causing condensation on cold surfaces such...
... in the table below. To reduce the relative humidity, lower the setpoint approximately three percent relative humidity every 24 hours. Recommended settings are available on . H8908A/B HUMIDISTAT H8908C/D DEHUMIDISTAT CHECKOUT Turn the H8908 dial to "ON" to test proper installation. OPERATION Humidity Control Adjustment To maintain optimal humidity levels without causing condensation on cold surfaces such...
