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NOTE - Due to Lennox’ ongoing commitment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability.

 

Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury. 

Installation and service must be performed by a qualified installer and servicing agency. 

©2009 Lennox Industries, Inc. 

Visit us at www.lennox.com 

For the latest technical information, www.lennoxdavenet.com

 

Contact us at 1-800-4-LENNOX

HUMIDIFIER SIZING iNFORMATION

(BASED ON VOLUME OF HOME)

Model No.

Type of Home

8 Foot Ceiling

9 Foot Ceiling

10 Foot Ceiling

Home Area (sq. ft.) Home Area (sq. ft.) Home Area (sq. ft.)

HCWB3-12, 

HCWB3-12A

Loose

750

666

600

Average

1500

1350

1200

Tight

3000

2700

2400

HCWB3-17, 

HCWB3-17A

Loose

1000

888

800

Average

2000

1800

1600

Tight

4000

3600

3200

NOTES: 

Loose Home = Two Air Change Rates per hour: Typically, loose in construction and is over 20 years old.  Not very well insulated and may 

have single pane windows, etc.   

Average Home = One Air Change Rate per hour: Average in construction, 15 to 20 years old on average.   

Tight Home = One-Half Air Change Rate per hour: Newer home with tight construction.. 

Also see Healthy Climate Power Humidifer HCWP3 bulletin for additional sizing conditions if needed.

Summary of Contents for HCWB3

Page 1: ...nstall where freezing may occur Humidifier saddle valve and manual or automatic humidifier control depending on model shipped in one package Sequence of Operation Humidifier will only operate when indoor blower is operating When the level of moisture in the return air or living space area drops below the set point of the humidifier control the water solenoid valve opens water flows into distributi...

Page 2: ...ovable for cleaning or replacement Evaporator Media Pad Provides large evaporation capacity Pad and support frame removable for cleaning or replacement Annual pad replacement recommended Saddle Valve All necessary fittings furnished as standard equipment Field installs in the water supply line OPTIONAL ACCESSORIES Installation Kit Canada Only Kit contains 6 in dia duct ring flange 2 5 ft of 6 in d...

Page 3: ... 8 156 DIA BY PASS DUCT CONNECTION B OPENING 1 AIR FLOW NOTES By pass duct air flow direction is dependent on application For downflow applications air flow is to the humidifier from the supply air duct 1 Left hand air inlet outlet shown For right hand inlet outlet rotate humidifier cabinet 180º top for bottom and relocate drain to alternate location on cabinet See Installation Instructions for ad...

Page 4: ... VOLUME OF HOME Model No Type of Home 8 Foot Ceiling 9 Foot Ceiling 10 Foot Ceiling Home Area sq ft Home Area sq ft Home Area sq ft HCWB3 12 HCWB3 12A Loose 750 666 600 Average 1500 1350 1200 Tight 3000 2700 2400 HCWB3 17 HCWB3 17A Loose 1000 888 800 Average 2000 1800 1600 Tight 4000 3600 3200 NOTES Loose Home Two Air Change Rates per hour Typically loose in construction and is over 20 years old N...

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