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Warns about electrical shock and sharp edges during installation.
Details risks of hot water burns and property damage from improper installation or humidity.
Provides the wiring diagram and notes for manual mode installation.
Lists humidifier dimensions, plenum opening, water feed rate, and electrical data.
Shows typical/alternate installations and unit orientation relative to cooling coils.
Contains notes regarding duct airflow, heat pumps, and water temperature.
Lists items provided with the humidifier and those that must be supplied separately.
Details the physical installation process from unlatching the cover to connecting the drain line.
Explains how to connect the humidifier's power and control wires to the furnace system.
Covers saddle valve operation, leak checks, functional tests, and warranty conditions.
Warns about electrical shock and sharp edges during installation.
Details risks of hot water burns and property damage from improper installation or humidity.
Provides the wiring diagram and notes for manual mode installation.
Lists humidifier dimensions, plenum opening, water feed rate, and electrical data.
Shows typical/alternate installations and unit orientation relative to cooling coils.
Contains notes regarding duct airflow, heat pumps, and water temperature.
Lists items provided with the humidifier and those that must be supplied separately.
Details the physical installation process from unlatching the cover to connecting the drain line.
Explains how to connect the humidifier's power and control wires to the furnace system.
Covers saddle valve operation, leak checks, functional tests, and warranty conditions.
The Aprilaire Automatic Humidifier Model 700 is designed to maintain optimal humidity levels in your home, contributing to comfort and potentially mitigating issues associated with overly dry indoor air. This device is intended for installation by a qualified heating and air conditioning contractor to ensure proper function and safety.
The Model 700 operates by introducing moisture into your home's forced air system. It utilizes a Water Panel® evaporator assembly, which is a key component for water evaporation. Water is supplied to the unit, and as air from your furnace blower passes through the moistened Water Panel®, it picks up humidity before being distributed throughout your home. The humidifier's operation is controlled by an Automatic Humidifier Control, which monitors and adjusts the humidity output based on your set preferences and the current indoor conditions. This control can be integrated with your furnace's operation, ensuring that the humidifier only runs when the furnace blower is active and humidity is needed. The system is designed to provide evaporative capacity, with options for using either cold or hot water. Utilizing hot water, especially in conjunction with constant blower operation, can enhance the evaporative capacity, which is particularly beneficial for heat pump systems where the supply air temperature might be lower.
The Aprilaire Model 700 offers several features designed for user convenience and effective humidity management. The Automatic Humidifier Control allows you to set your desired humidity level. It is crucial to set the humidity level appropriately to prevent condensation on windows or in unheated spaces, which could lead to moisture accumulation and potential mold growth. The control can be installed on the return duct, and its wiring integrates with your furnace's 24 VAC accessory terminals. The humidifier itself requires a 120 VAC power source. For installations where the 120 VAC power source for the humidifier and the 24 VAC power source for the control are continuously powered, a Model 50 Current Sensing Relay (not supplied) may be required to ensure proper operation in conjunction with the furnace blower. The humidifier is compatible with various water types, including cold, hot, softened, or unsoftened water, offering flexibility in installation. The saddle valve, used to tap into the water supply line, is designed to be either fully opened or closed, and should not be used to regulate water flow. This ensures consistent water supply to the unit. The device includes a drain spud designed to accept a 1/2" I.D. plastic hose for draining excess water, which must be run to a floor drain with a continuous slope.
Maintaining the Aprilaire Model 700 involves several straightforward steps to ensure its longevity and efficient operation. The Water Panel® evaporator assembly is designed to be easily accessible for replacement. To access it, the humidifier cover assembly can be unlatched and lifted, allowing the Water Panel® to be pulled out. The scale control insert, located at the bottom of the Water Panel® assembly, plays a role in managing mineral deposits. Regular inspection and replacement of the Water Panel® are essential for optimal performance, as mineral buildup can reduce the humidifier's efficiency. The manual emphasizes the importance of ensuring all plumbing connections are watertight and that the saddle valve is fully open after installation. It also advises checking the humidifier's operation to confirm that all electrical components function properly. The installation instructions provide detailed wiring diagrams and safety guidelines, which are crucial for both initial setup and any future servicing. For instance, disconnecting electrical power to the furnace before any maintenance is a critical safety measure to prevent electrical shock. Similarly, shutting off the hot water supply before disconnecting or tapping into any hot water supply line is necessary to prevent scalding. The design of the unit, with its accessible components, facilitates routine checks and part replacements, contributing to the overall ease of maintenance.
General| Type | Bypass |
|---|---|
| Coverage Area | Up to 4, 200 sq. ft. |
| Voltage | 24V |
| Output | 0.75 gallons per hour |
| Installation | Professional Installation Recommended |
| Warranty | 5-Year Limited Warranty |
| Control Type | Automatic or Manual |
