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Aprilaire® 5558
Aprilaire® Digital Modulating Control Package, 22 - 26 VAC or 28 - 32 VDC at 50/60 Hz, 10 - 90% Relative Humidity (in 1% Increments) Adjustable, +/-3% Differential Humidity, Wall Mounting, 32 - 104 deg F
| Voltage Rating | : | 22 - 26 VAC or 28 - 32 VDC at 50/60 Hz |
| Adjustable Range | : | 10 - 90% Relative Humidity (in 1% Increments) |
| Differential Humidity | : | +/-3% |
| Mounting Type | : | Wall |
| Temperature Rating | : | 32 - 104 deg F |
- Wall-mounted humidistat boasts a microcomputer design and offers a large LED digital display with a backlight
- Outputs controlling humidification and dehumidification equipment by means of on/off or proportional output signals for greater flexibility
- Integrated sensor for better application flexibility
- Programmable proportional band to increase or decrease the sensitivity of the humidifier control
- Humidity setpoint reset function based on outdoor temperature which helps prevent condensation in colder climates
- 10 kohm outside temperature sensor
- +/- 3% or better at 40% RH and 73 deg F (23 deg C) sensor precision, 2 to 10% for control signal proportional band
- External setpoint from Aprilaire humidifier, external humidity sensor (0 - 10 VDC/2 - 10 VDC) or high limit (0 - 10 VDC/2 - 10 VDC)
- 1 alarm status digital input (24 VAC or dry contact)
- 18 AWG electrical connection
- Proportional high limit override to prevent over-humidification within the duct and costly water damage
- Multi-level lockable access menu and lockable setpoint to prevent accidental changes
- Indicator when outdoor temperature setback is used for winter compensation
Specification Sheet
