GeneralAire 900A, 900, 900M Installation & Owner's Manual

Installation & Owners Manual

Model 900 (A & M)

Humidifier

GFI #5720 & 5725

• Installationbyanyoneotherthanaqualiedcontractorvoidsthewarranty.

• Productdesignedforresidentialinstallationonly.Commercialinstallationvoidswarranty.

• Modicationoralterationofproduct,parts,installationinstructionsorlocalsafetycodesvoidswarranty.

• Readourfullwarrantypolicyattheendofthisdocument.

Breathe Healthier

Please Read And Save These Instructions

Canadian General Filters, Ltd.
400 Midwest Rd.
Toronto, ON M1P3A9 Canada

Toll Free: [phone]

www.cgfproducts.com

General Filters, Inc.
43800 Grand River Avenue
Novi, Michigan 48375

Toll Free: [phone]

www.generalaire.com

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Model 900 Humidier Installation Manual

Breathe Healthier! Residential Whole-House Indoor Air Quality

Table of Contents

Specications 3

Unit Location 3

Additional Materials That May Be Necessary: 3

Installation 4-5

Installing / Wiring The Control 6

How The Humidier Works 7

Maintenance 7

Parts Drawing 8

Inside Your Box 8

Humidier Chassis Cut Out 9

Trouble Shooting 9

FAQ’s 10

Limited Warranty 11-12

Model 900 Table of Contents

WARNING!

This symbol indicates: IMPORTANT INSTRUCTIONS!
Failure to heed them can result in serious injury or death.

CAUTION!

This symbol indicates: IMPORTANT INSTRUCTIONS!
Failure to heed them can result in serious injury or material property damage.

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Model 900 Humidier Installation Manual

Unit Location

• WARNING: Disconnect electrical power before beginning installation.

• Do not install where temperatures fall below 32°F / 0° C or where plenum temperatures exceed 200° F / 93° C.
For maximum evaporative capacity, install this humidier on the warm air supply plenum.

Additional Materials That May Be Necessary:

1. 1/4" Diameter plastic supply tubing for cold water applications, or 1/4" copper supply tubing for hot water
applications

2. 6" Diameter galvanized by-pass pipe, elbow, damper, collar

3. 24V Electrical wire and wire nuts

4. Current sensing relay (Model #GA50 - GFI #7026)

5. #8 Self-piercing sheet metal screws

6. 5/8" Drain tubing (990-16 - GFI #7046)

Specifications

• Model: 900 (A & M) Elite Flow Through Humidiers (GFI #5720 & 5725)

• Type: Flow Through

• GPD: 17 Based on 120° F / 49° C Plenum Temperature

• Warranty (Years): 10

• Replacement Vapor Pad®: GA19 (GFI#7919) (Replace 1-2 times per season)

• Dimensions (Inches): 15-1/4 W x 16-1/2 H x 10 D

• Weight (Pounds): 8

• Home Size (Square Feet): To 2,800

• Installation: Warm Air / Return Air Plenum / Right or Left Side

• Plenum Opening (Inches): 8-7/8 W X 12 H

• Bypass Opening (Inches): 6

• Pallet Qty: 32

• Cabinet Construction: UV-Stable Automotive Grade Plastic

• Humidistat (Incuded): “M” Models: MHX3C / “A” Models: GFX3

• Voltage: 24VAC

• In The Box: Humidier, Humidistat, Control Bypass Damper, 24V Transformer, Solenoid Valve, Vapor Pad®,

Saddle Valve, (GCV3412 Code Valve - A Models), Installation Instructions, Template, Parts.

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15-1/4” W

16-1/2” H

10” D

Expected Humidity Performance Coverage in Square Feet Based on Construction Type

Model No. GPD

Loose

(0.75 AC/H)

Average

(0.50 AC/H)

Tight

(0.30 AC/H)

Elite 570 12 800 Sq. Ft. 1200 Sq. Ft. 2000 Sq. Ft.

Elite 900 17 1115 Sq. Ft. 1650 Sq. Ft. 2800 Sq. Ft.

Elite 1000 18 1175 Sq. Ft. 1770 Sq. Ft. 3000 Sq. Ft.

Outside Design Temperature 0° F / -18° C

Outside Design R.H. 70% R.H.

Inside Design Temperature 70° F / 21° C

Inside Design R.H. 30% R.H.

Air Changes/Hour (AC/H) 0.30

Ceiling Height (Feet) 8

Furnace Plenum Temperature 120° F / 49° C

Furnace Run Time For Calculating Sq. Ft. 8 Hour /1 Day

Humidifier Performance Baseline Criteria

Installation Options:

• Warm Air Plenum

• Return Air Plenum

• Right or Left Bypass

• Vertical or Horizontal

• Furnace or Air Handler

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Model 900 Humidier Installation Manual

Breathe Healthier! Residential Whole-House Indoor Air Quality

Installation

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COPPER
TUBING

PLASTIC
TUBING

12”

8-7/8”

6”

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2

1

2

1. The Model 900 may be installed on either the supply or return
plenum of a forced air handling system. Select a location for
the humidier that allows for service and maintenance. Cut
out a rectangle 8-7/8” wide by 12“ tall. Extend horizontal
centerline of cut out to the adjacent plenum. Cut a 6” hole
10” to 15” from side of humidier, on cabinet centerline, using
connecting collar as guide. The bypass is reversible and can
be mounted on the right or left side of the humidier.

2. The humidier is self retaining. Slide the top side in rst,
then slide the chassis down. Level chassis and install center
screws. If by-pass pipe installs to opposite side of chassis,
bend clip on chassis, remove side panel, and reinstall panel
to opposite side of chassis. Install remaining four corner
screws.

3. Connect the by-pass pipe to the collar and humidier
cabinet. Using holes at top and bottom of side panel
discharge, pierce two self tapping screws through by-pass
pipe.

4. Mount the self tapping saddle valve or code valve on either

a cold or a hot water pipe. A side or top mount is best to
avoid clogging from pipe sediment. Connect 1/4” O.D.
tubing to the saddle valve. Copper tubing requires a brass
compression nut and brass sleeve. Plastic tubing requires a
brass insert inside the tubing, a plastic sleeve on the outside
with a brass compression nut.

CAUTION: Do not use plastic tubing on hot water or in

contact with any hot plenum surface or duct. Installation
of this saddle valve must meet or exceed local codes and
ordinances.

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Model 900 Humidier Installation Manual

5. GCV3412 Code Valve Installation Instructions*

Copper Pipe:

1. CAUTION:Turn off water supply.

2. Clean pipe, ttings and valve with sandpaper or wire brush.

3. Apply a thin layer of ux to all surfaces to be soldered.

4. Assemble valve to pipe and/or ttings.

5. Cooling the valve by wrapping a wetted rag around the valve is optional.

6. WARNING: For your safety, this should be performed by a licensed

contractor only. Heat the joints with a torch. Apply solder to each joint.

Continue to apply heat sufcient to keep solder liquid.

7. After solder has lled entire joint area, remove heat and allow joint to cool. Do not
move or disturb.

8. Slide compression nut over 1/4” copper tube followed by compression sleeve.

9. Insert tube fully into valve and tighten nut.

10. Turn on the water supply and check for leaks.

*Code Valve Is Included With Automatic Models Only

6. Turn damper knob to WINTER position. Turn on the water supply and check operation of humidier. Set the

humidistat to a demand setting. With the furnace off, the solenoid valve should be closed. Start the furnace,
the solenoid valve should open when the blower or burner circuit is energized. Check ow of water through
distributor trough and evaporator pad. The standard GA4231 (YELLOW) orice will supply approximately

3.5 GPH of water at a line water pressure of 60 PSI. For low water pressures (20-40 PSI) a larger (ORANGE)
orice GA4299 is available to provide the same ow. Leave humidistat set at the recommended setting.

Connect the drain hose to 1/2" spout on humidier cabinet using hose clamp. Run 1/2" hose to suitable
drain such as oor drain, laundry sink, or to a condensate pump (sold separately). Be sure hose has
continuous slope and is not kinked at any point.

Connect 1/4" water supply tube to brass lter at

inlet of solenoid.

CAUTION:Do not use plastic tubing in contact
with any hot plenum surface or duct. If using
plastic tubing, use tube insert P189 and plastic
compression sleeve P190 (available as part of
assembly 747-38 tubing kit, GFI #7078).

Installation Cont.

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1/2” TEE

3/4” TEE