General Aire GF3200DMD Evaporative Humidifier Instruction Manual

Model GF3200DMD & GF4200DMD

Evaporative Humidifier Installation Manual

Please Read And Save These Instructions

GF4200DMD                                   GF3200DMD

Plenum Installation Location: Models
GF-3200DMM & GF-4200DMM humidifiers may be installed on either the return or supply plenum of a forced air handling system. The Humidifier bypass panel is reversible and can be mounted on the right or left side of the humidifier. Select a location for the humidifier that allows for service and maintenance.

Vertical Installation Options

1. Return
2. Supply
3. Drain Line

Horizontal Installation

1. Drain Line

  CAUTION!

This symbol and the word “CAUTION” indicates:
IMPORTANT INSTRUCTIONS!

WARNING!

This symbol and the word “WARNING” indicates:
IMPORTANT INSTRUCTIONS!

Failure to heed CAUTION! or WARNING! can result in serious injury or death.

Inside the Box:

Humidifier (Model GF3200DMD or GF4200DMD)
 GFGA10 Vapor Pad® (For Model GF3200DMD) OR
 GFGA35 Vapor Pad® (For Model GF4200DMD),
 Solenoid valve assembly

Integral bypass damper
Humidistat
24V transformer
 Quick Connect Tee Valve w/Shut off
Hardware
1/4″ Diameter plastic supply tubing for hot or cold water applications

6″ Diameter flexible by-pass duct assembly

Electrical wire
10′ plastic drain hose

Not Included:

6″ diameter rigid or flexible bypass duct
Wire Nuts
24V current sensing relay (GF-GA50) or air proving switch (GF-12502)

WARNING: DISCONNECT ELECTRICAL POWER BEFORE BEGINNING INSTALLATION.

Off

IMPORTANT: To ensure your safety and the longevity of your unit, we recommend:

• Contacting a licensed contractor to perform maintenance or repairs.

• Changing your Vapor Pad® at the start of each heating season.

  WARNING: Do not install where ambient temperatures fall below 32°F / 0°C or where plenum temperatures exceed 200°F / 93°C. For maximum evaporative capacity, install this humidifier on the warm air supply plenum.

Form No. 4200-18 RevC Canada

Canadian General Filters, Ltd.
400 Midwest Rd.
Toronto, ON M1P3A9 Canada
Toll Free: 888-216-9184
www.generalaireiaq.ca

INSTALLATION

1 CUT HUMIDIFIER AND BYPASS HOLES IN DUCT

Using the supplied template, cut the rectangular opening in the Return or Supply (shown) duct. Cut the 6″ round hole in the opposite duct. Locate it 10″ to 15″ from side of the humidifier, near the cabinet horizontal centerline.

1. Supply
2. Return

2 OPTIONAL. MOVE SOLENOID BRACKET FOR LEFT SIDE BYPASS:

I. Remove distribution tube.
II. Remove solenoid from left side of chassis. (Fig. A)
III. Loosen nut on top of solenoid – do not remove. (Fig. B)

1. Humidifier Chassis
2. Nut
3. Mounting Bracket

IV. Rotate bracket 180°, as shown. (Fig C)
V. Re-tighten nut.
VI. Mount solenoid on right side of chassis. (Fig. D)
VII. Reinstall distribution tube.

1. Mounting Bracket
2. Nut
3. Humidifier Chassis

3 MOUNT THE CHASSIS

Make sure the bypass panel is aligned with the 6″ opening in the duct. Make sure the drain spout is pointing downward, as shown. Level the chassis and install the six mounting screws.

1. Ensure Chassis is Level
2. Drain Spout

4 MOUNT THE BYPASS

Connect one end of the bypass pipe to the humidifier.
Connect the other end to the 6″ opening in the duct.

If using flexible ducting, minimize excess length and sag.

1. BYPASS PIPE ASSEMBLY

5 INSTALL THE PUSH-TO-CONNECT VALVE

I. Select desired valve location.

II. Remove 0.6″ (15mm) of pipe to account for valve width (Fig. E).
Make sure both pipe ends are square, deburred and clean.

III. Mark both pipes at the insertion depth, 0.95″ (24mm) (Fig. F).

IV. Firmly insert both pipes into fitting until at full depth.
Verify each pipe is fully inserted. The depth mark will be within 0.005″ (0.13mm) of the release collar (Fig. G).

6 CONFIGURE WATER SUPPLY TUBING

I. Utilizing copper tubing requires a brass compression nut and brass sleeve.

II. Utilizing plastic tubing requires a plastic sleeve on the outside with a brass compression nut.

1. HOT WATER- COPPER TUBING 1/4″

2. Brass Sleeve
   P-102

3. Compression Nut P-101

4. Plastic Sleeve
   P-190

5. COLD WATER – PLASTIC TUBING 1/4″

1. Solenoid Assy
   4400-05

2. 1/4″ Water Supply Tube

3. Compression Nut
   P-101

4. Compression Sleeve
   P-190

7 CONNECT THE DRAIN HOSE

Connect the 1/2″ ID drain hose to the spout on the humidifier cabinet using the provided flat spring clip. Run the drain hose to a suitable drain such as floor drain, laundry sink or to a condensate pump (sold separately). Be sure the hose has continuous slope and is not kinked at any point.

1. 1/2″ Spout
2. Flat Spring Clip
3. 1/2″ Drain Hose

8 INSTALL THE (DUCT OR WALL MOUNT) MANUAL HUMIDISTAT

I. Mount the included humidistat on the duct (Fig. H) or on the wall.
II. Wire the humidifier and humidistat as shown. (Fig. I)
(Complete instructions can be found in the humidistat package.)

• W Terminal:

  • Some control boards may have a dedicated 24v HUM terminal (confirm with manufacturer literature before installing).
  • If 120V HUM terminal is used, please use 24VAC transformer provided.

WARNING: ALL WIRING SHOULD COMPLY WITH LOCAL ELECTRICAL CODES.

1. Humidistat
2. Drain Hose

1. Furnace
2. GeneralAire® MHX3C Humidistat
3. GeneralAire® Humidifier
4. Wire Splices
5. Blue Wires

9 TEST THE OPERATION OF THE UNIT

• Turn the damper knob to the WINTER position. (Fig. J)
• Turn on the water supply.
• Turn the humidistat ON (towards the left).
• The solenoid valve should be closed when not energized.
• Once the solenoid is energized the valve should open.
• Check flow of water through distributor trough and evaporator pad
  (3.5 GPH of water at a line pressure of 60 psi.)

1. Damper Knob Pointing at “WINTER”

GF-3200DMM Humidifier Assembly

1. 3200-13
   COVER

2. 4200-15
   DISTRIBUTION TROUGH

3. 4200-05
   SOLENOID VALVE

4. 4200-21
   SS DISTRIBUTION TUBE ASSEMBLY

5. 3200-01
   CHASSIS

6. 4200-02
   SIDE PANEL

7. 900-28
   DAMPER

8. 900-29
   COMPRESSION SPRING

9. 900-11
   DAMPER KNOB

10. 4200-10
    SPOUT

11. 3200-14
    DRAIN PAN

12. 3200-12
    VAPOR PAD (GA10)

GF-4200DMM Humidifier Assembly

1. 4200-13
   COVER

2. 4200-15
   DISTRIBUTION TROUGH

3. 4200-05
   SOLENOID VALVE

4. 4200-21
   SS DISTRIBUTION TUBE ASSEMBLY

5. 4200-01
   CHASSIS

6. 4200-02
   SIDE PANEL

7. 900-28
   DAMPER

8. 900-29
   COMPRESSION SPRING

9. 900-11
   DAMPER KNOB

10. 4200-10
    SPOUT

11. 4200-14
    DRAIN PAN

12. 4200-12
    VAPOR PAD (GA10)

Replace your Vapor Pad® at the beginning of each heating season.

• Model GF-3200DMM = GF-GA10 (GFI #7905)
• Model GF-4200DMM = GF-GA35 (GFI #7902)

Your new humidifier carries a 5-year limited warranty for the solenoid only.
For our complete warranty policy visit www.generalaireiaq.ca.

Canadian General Filters, Ltd.  400 Midwest Rd.  Toronto, ON M1P3A9 Canada
Toll Free: 888-216-9184 www.generalaireiaq.ca

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