Humidifier operates, Constantly, Knob setting

SYMPTOM	TROUBLESHOOTING PROCEDURE

Humidifier operates	• If the humidity level in the building is less than the knob setting or is within the proportional control band (Model 1160 and
constantly	1180 only), the Automatic Steam Humidifier Control will operate the humidifier until the humidity level is higher than the
	knob setting.
	• In the “Test” mode, verify unit will operate for approximately one minute.
	• Check the resistance of the sensor by removing the wires of the Outdoor Temperature Sensor and measuring the resistance
	across the wires with an ohmmeter. Confirm reading to outdoor temperature in Table 4. (For Manual Operation, verify that
	resistance across the leads of Resistor Case is between 44,000 and 48,000 ohms.)
	• Make sure the Outdoor Temperature Sensor is mounted completely outside the building on the North, East, or West side of
	the building and out of direct sunlight. (Automatic Mode Only).
	• Rotate the Automatic Steam Humidifier Control knob counterclockwise to the “Off” position, and observe whether the
	humidifier turns off (‘Steam’ indicator light on the humidifier should go off). If the humidifier still operates in the “Off”
	position, check summary wiring diagram for correct Automatic Steam Humidifier Control installation.
	• If humidifier still does not shut off, refer to the troubleshooting section in the Aprilaire Steam Humidifier Installation,
	Operation, and Maintenance Manual.

Humidifier or Automatic Steam Humidifier Control “chatters” or clicks ON and OFF rapidly

•Check voltage at Automatic Steam Humidifier Control “24V” and “C” terminals. Voltage should be 22 VDC minimum – 26 VDC maximum.

•Make sure Outdoor Temperature Sensor wiring is not run alongside wires carrying high voltage (120 VAC or higher). (Automatic Only)

Red Diagnostic Light is on	• Check that the wiring is correct. See Figure 9.
	• Measure the resistance of the Outdoor Temperature Sensor by removing the leads from the terminal and measuring
	the resistance across the wires with an ohmmeter. Confirm the reading with the temperature in Table 4.
	(For Manual Operation, verify that the resistance across the leads of the Manual Mode Resistor Case is between
	44,000 and 48,000 ohms).

AUTOMATIC STEAM

HUMIDIFIER

CONTROL TEMPLATE

CUT ALONG DASHED LINE

WARNING

Sharp edges on the opening may cause cuts. Use care when cutting the plenum opening and installing the Automatic Steam Humidifier Control.

CAUTION

•Do not mount Automatic Steam Humidifier Control on supply plenum or duct. The unit will not withstand supply temperatures and will malfunction!

•When installing Automatic Steam Humidifier Control on counterflow furnaces, ensure blower continues to run after a heat call is satisfied to eliminate high temperatures from damaging the Automatic Steam Humidifier Control.

•Do not mount Automatic Steam Humidifier Control downstream of the bypass outlet. False humidity conditions will cause humidifier to operate incorrectly.

1.CUT TEMPLATE ALONG DASHED LINE.

2.PLACE THIS TEMPLATE ON THE RETURN PLENUM UPSTREAM OF (BEFORE) THE DISPERSION TUBE.

3.TRACE THE OUTSIDE EDGES OF THIS TEMPLATE.

4.REMOVE TEMPLATE AND ACCURATELY CUT THE PLENUM OPENING.

5.USING 4 SHEET METAL SCREWS, INSTALL AUTOMATIC STEAM HUMIDIFIER CONTROL IN PLENUM OPENING.

1180, 1150, 1160 specifications

Aprilaire 1160, 1150, and 1180 are three advanced whole-home humidifiers designed to enhance indoor air quality, maintain comfort levels, and promote a healthier living environment. These models are engineered to tackle the challenges of dry air, which can lead to various health issues such as dry skin, irritated sinuses, and increased allergens. Each model has unique features and technologies that cater to specific needs, making them suitable for a variety of households.

The Aprilaire 1160 is a high-capacity option capable of humidifying homes up to 3,600 square feet. One of its most notable features is the automatic humidistat, which continuously measures indoor humidity levels and adjusts the humidifier's operation accordingly. This ensures optimum comfort without unnecessary energy consumption. The 1160 also utilizes the evaporative technology, which draws in dry air and passes it through a moistened wick, allowing moisture to evaporate and be released into the home. Additionally, its self-regulating design prevents oversaturation and ensures consistent humidity levels year-round.

The Aprilaire 1150, designed for homes up to 3,000 square feet, offers similar benefits, spotlighting simplicity and efficiency. It features an easy-to-use manual humidistat that lets homeowners set their desired humidity levels. The 1150 also incorporates a robust water panel that collects moisture, meaning it can effectively combat dry air in even the most challenging conditions. Its compact design allows for flexible installation options, making it a suitable choice for both new constructions and existing homes.

For larger spaces, the Aprilaire 1180 is an excellent solution, effectively servicing areas up to 4,000 square feet. Like the 1160, it benefits from an automatic humidistat for seamless operation. One of the standout features of the 1180 is its high moisture output capability, ideal for households with higher humidity needs. Furthermore, the humidifier operates quietly, making it suitable for bedrooms and other quiet spaces. Its advanced water panel technology and simple maintenance requirements set it apart as a reliable choice for homeowners looking to improve their indoor air quality.

Overall, Aprilaire humidifiers 1160, 1150, and 1180 are equipped with cutting-edge technologies and user-friendly features that cater to different home sizes and needs. By maintaining optimal humidity levels, these devices not only enhance comfort but also create a healthier living environment.

Aprilaire 1160 Humidifier operates, Constantly, Knob setting, Operation, and Maintenance Manual

Models: 1180 1150 1160

SYMPTOM