AprilAire 700 Series Whole House Humidifier Installation Guide
- June 14, 2024
- Aprilaire
Table of Contents
INSTALLATION TEMPLATE
700 Series
Fan-Powered
Evaporative Humidifier
700 Series Whole House Humidifier
WARNING
- ATTENTION INSTALLER: Read this manual before installing. Improper installation or maintenance may cause property damage or injury. It is recommended that installation, service, and maintenance be performed by a trained service technician. This product must be installed in compliance with all local, state, and federal codes.
- ELECTRIC SHOCK HAZARD: 120 volts may cause serious injury from electric shock. Disconnect electrical power to the HVAC system and humidifier before starting installation or servicing. Leave power disconnected until installation/ service is completed.
- RISK OF SCALDING. Water temperature over 125°F can cause severe burns and scald instantly. Shut off the hot water supply before disconnecting or tapping into any hot water supply line.
- Avoid obstructions such as plumbing or electrical wires when cutting into walls.
CAUTION
-
SHARP EDGES MAY CAUSE INJURY FROM CUTS.
Use care when cutting plenum openings and handling ductwork. Always wear glasses/goggles and gloves when installing the unit. -
Dropping may cause personal injury or equipment damage. Handle with care and follow installation instructions.
NOTICE
FREEZING TEMPERATURES CAN BURST WATER PIPES.
- Do not install the humidifier where freezing may occur. The water line could freeze and crack causing water damage to the home.
CONDENSATION DAMAGE OR MOLD CAN OCCUR.
- Position the return duct mounted humidifier control at least 6” upstream of the humidifier or fresh air intake for accurate humidity sensing.
- Position the wall-mounted humidifier control in areas unaffected by drafts or heat sources for accurate humidity sensing.
- Lower the humidity setting on the humidifier control if there is excess condensation on the inside of any windows in unheated living spaces.
EQUIPMENT DAMAGE MAY OCCUR IF INSTALLATION INSTRUCTIONS ARE NOT FOLLOWED.
- Do not install the humidifier on the furnace jacket.
- Do not connect the power cord to multi-speed furnace blower motors or blower motors other than 120 VAC. Use AprilAire Model 50 Current Sensing Relay. Do not alter 120 VAC plug or hardwire the unit.
- Do not install the humidifier on a plenum face at the blanked end of the cooling coil.
- If water pressure exceeds 125 psi, reduce water pressure with devices allowed by local codes.
- Use hot water with a temperature no greater than 140°F (60°C).
- Do not install the humidifier on systems with external static pressure greater than 0.4” w.c.
- When installing the humidifier control on the return duct of a downflow furnace, ensure blower continues to run after a heat call is satisfied to eliminate high temperatures from damaging the humidifier control.
- Periodically check drain line to make sure water flows freely to drain.
SPECIFICATIONS
Humidifier Dimensions:
Width: 15-29/32”
Height (including solenoid valve and drain spud): 18”
Depth: 10-11/32”
Plenum Opening: 14-3/4”W x 14-5/16”H
Water Feed Rate: 3 gph
Electrical Data: 24 VAC, 60 Hz, 0.8 Amp
Water Panel®: Model 35
FURNISHED ITEMS
- 24 VAC transformer
- Automatic Digital Humidifier Control and Outdoor Temperature Sensor (Model 700 only)
- Manual Humidifier Control (Model 700M only)
- Humidifier Control Installation Instructions
- Saddle valve
- Humidifier Installation Template
ITEMS NOT FURNISHED
- Mounting screws (sheet metal screws)
- Water supply line (1/4” O.D. copper)
- Drain line (1/2” I.D. hose)
- Low voltage wire (18-22 gauge)
- Model 50 current sensing relay (if required)
INSTALLATION OPTIONS
AprilAire Model 700 and 700M can be installed on either the supply plenum or
cold air return of a forced air handling system. The humidifier dimensions and
serviceability must be considered when selecting the best location for the
humidifier.
Hot water is recommended (140°F max) for maximum evaporative capacity. It is
also required when the Blower Activation Feature is used with an Automatic
Digital Humidifier Control, when mounted on a heat pump system, or when the
humidifier is mounted on a cold air return. The humidifier functions with
cold, hot, softened, or unsoftened water.
PARTS LIST
1. Front Cover
2. Base
3. Orifice Plate
4. Motor Mount Bridge
5. Scale Control Insert
6. Water Panel
7. Water Distribution Tray| 8. Fan Blade
9. Motor
10. Motor Mount Gasket
11. Relay
12. Power Cord
13. Strain Relief Bushing
14. Solenoid Valve| 15. Connector Plug
16. Feed Tube
17. Nozzle
18. Relay Connector
19. Transformer
20. Strainer
21. Orifice
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TEMPLATE MUST BE LEVEL
Product Info & Digital Manualhttp://qrcc.me/rd2nnjd3
INSTALLATION INSTRUCTIONS
DRAIN LINE:
- Ensure downward slope and no kinks.
- Do not over- tighten hose clamp onto drain spud.
- Do not use solvent adhesive on drain spud.
MODEL 700 DIGITAL HUMIDIFIER CONTROL WIRING
MODEL 700M MANUAL CONTROL WIRING
IMPORTANT: Use 120 VAC power source other than furnace blower circuit.
However, the transformer can be powered off the hot 120 VAC line before it
enters the furnace. Do not wire transformer into furnace blower
circuit.
IMPORTANT: When Model 50 current sensing
relay is used, wire Model 50 current sensing relay into 24 VAC humidifier
control circuit only! Do not install in transformer primary circuit.
INSTALLATION CHECKLIST
Saddle valve is fully open.
All plumbing connections are watertight.
Unit is plugged into 120 VAC outlet.
Humidifier functions properly.
Owner’s manual has been given to homeowner.
B2205118H • 10008976 • 08.23
© 2023 AprilAire | aprilairepartners.com |
800.334.6011
AprilAire reserves the right to change specifications without notice.
Documents / Resources
|
AprilAire 700 Series Whole House
Humidifier
[pdf] Installation Guide
700 Series, 700 Series Whole House Humidifier, Whole House Humidifier, House
Humidifier, Humidifier
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References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>