Skuttle® Model 592-9
24-Volt Spray Humidifier
for Heat Pumps and High-Efficiency Furnaces
INSTALLATION INSTRUCTIONS
IMPORTANT:
THIS HUMIDIFIER MUST BE INSTALLED BY A QUALIFIED CONTRACTOR.
DO NOT INSTALL ON ANY SYSTEM WITH WATER PRESSURE
LESS THAN 40 P.S.I.
Installation on water systems with hardness ratings greater than 7 grains is not recommended. Such installations can result in nozzle blockage, dripping, erratic spray patterns and other maintenance problems. Hardness above 7 grains will also produce dust from solids in the water supply, which will be distributed throughout the home. Consult your municipal water provider before continuing.
SAFETY PRECAUTIONS
READ THESE PRECAUTIONS AND ALL INSTALLATION INSTRUCTIONS
BEFORE INSTALLING THE HUMIDIFIER.
NOTE: Skuttle Mfg. Co. assumes no responsibility under warranty if installer does not follow these instructions and safety precautions.
Do not install a humidifier where the heating temperatures can exceed 200°F. Excessive temperatures will damage the humidifier, possibly causing an overflow condition and water damage to the home.
Do not install a humidifier where the surrounding temperature can be 32°F or colder. Frozen water will damage the humidifier and burst the supply pipe, resulting in home damage.
Do not cut or drill into any air conditioning or electrical accessories during humidifier installation. DANGER: Electrocution is possible if you come in contact with a live wire; blindness can occur if refrigerant contacts your eyes.
When the humidifier is installed in an area where water damage could occur, connect the humidifier’s overflow provision to a suitable drain pan.
For above-ceiling installations, always install a drain safety pan, plumbed to a suitable drain.
For initial recommended humidistat settings, refer to Table 1, below. (Be- cause relative humidity affects people differently, these settings can be raised or lowered slightly to suit personal comfort levels.)
CAUTION: Setting the humidistat higher than the recommended set- ting can cause condensation, resulting in home damage. If excessive moisture appears on windows or walls, reduce the humidistat’s humidity setting enough to eliminate condensation. If the situation continues, turn off the humidifier’s water source until condensation is gone.
Make sure the installation, wiring and plumbing of the humidifier comply with local codes, ordinances and regulations.
Outside | Recommended | Outside | Recommended |
Temperature | Setting | Temperature | Setting |
| | | |
-20°F | Low | +10°F | Med |
| | | |
-10°F | Low | +20°F | High |
| | | |
0°F | Med | Above +20°F | High |
| | | |
Table 1 | | | |
INSTRUCTIONS
GENERAL INFORMATION:
1.0This humidifier puts moisture into the home by spraying a fine mist of water into the warm air plenum, which is carried into the living area by the duct system.
1.1When wired as recommended, the humidifier will operate only when the furnace blower is operating and the humidistat is calling for humidity.
1.2The nozzle capacity (flow) is rated at 40 P.S.I. This capacity varies accord- ing to line pressure, as shown in Table 2, below. Select the nozzle that delivers the required spray in accordance with the pressure in your area.
| Capacities in G.P.H. at Various Water Pressures |
| | | | | |
Nozzle Size | 40 P.S.I. | 60 P.S.I. | 80 P.S.I. | 100 P.S.I. | 125 P.S.I. |
| | | | | |
.37 | .37 G.P.H. | .45 G.P.H. | .55 G.P.H. | .60 G.P.H. | .70 G.P.H. |
| | | | | |
.50 | .50 G.P.H. | .60 G.P.H. | .70 G.P.H. | .80 G.P.H. | .85 G.P.H. |
| | | | | |
.75 | .75 G.P.H. | .89 G.P.H. | 1.10 G.P.H. | 1.20 G.P.H. | 1.40 G.P.H. |
| | | | | |
1.00 | 1.00 G.P.H. | 1.20 G.P.H. | 1.40 G.P.H. | 1.60 G.P.H. | 1.70 G.P.H. |
| | | | | |
1.50 | 1.50 G.P.H. | 1.80 G.P.H. | 2.10 G.P.H. | 2.40 G.P.H. | 2.70 G.P.H. |
| | | | | |
2.00 | 2.00 G.P.H. | 2.50 G.P.H. | 2.80 G.P.H. | 3.20 G.P.H. | 3.50 G.P.H. |
| | | | | |
Table 2 EXAMPLE: A home which requires .50 gallons of water per hour for proper hu- midification, and which has a water pressure of 80 P.S.I., would need a .37 noz- zle to do the job.
1.3If the water pressure is excessive, a pressure regulator valve will be neces- sary to obtain the proper volume of moisture.
REQUIRED TOOLS:
2.0Aviation Snips • #2 Flathead Screwdriver • #1 Phillips Screwdriver • Ad- justable Wrench • Pliers • Electric Drill with 7/64", 3/32", 1/4" and 3/8" Drill Bits • Hammer • Center Punch
Part No. 000-0756-233
Rev. 8/03 HBP
101 Margaret Street, Marietta, OH 45750
Phone: (800) 848-9786 • Fax: (740) 373-9565
Email: techservice@skuttle.com • Web: www.skuttle.com
BEGIN READING ON OPPOSITE PANEL
INSTALLING THE HUMIDIFIER:
3.0CAUTION: When selecting a location for the humidifier, make sure the spray will not impinge or accumulate on any fan, limit controls, resistance heat- ing coils or heating/air coils.
3.1Select a location where the air will push the spray mist away from the humidifier.
3.2Mount the humidifier on the warm air plenum only, with the nozzle pointing up in the direction of airflow (see Figure 1, left). On narrow plenums, mount the humidifier on the narrow side.
3.3If there is not enough room on the warm air plenum, mount the humidifier further downstream on the warm air duct, away from the heating and cooling coil.
3.4If it is necessary to mount the spray nozzle further away from the humidifier (in order to move the nozzle further into the air stream for better absorption), remove the nozzle adapter and 45° fitting from the solenoid valve. Use the fittings supplied in the parts bag to relocate the nozzle using
| 1/4" copper tubing (not supplied). (See |
| Figure 2, below, left.) | CAUTION: Do not |
| allow copper tubing to come in contact |
Figure 1 | with sharp edges or surfaces that may |
cause wear on the tubing. | | |
| | |
| 3.5 | Tape | the | template |
| (provided) on the warm air |
| plenum in | the | location |
| selected for the humidifier. |
| CAUTION: Make sure the |
| template is level. | |
3.6 Center punch and drill four 7/64" mounting holes, as shown on the template. DANGER: Make sure you
are not cutting or drilling in-
Figure 2to air conditioning or elec- trical accessories.
3.7 Drill a 3/8" hole in the center of the shaded area of the template; cut a rec- tangular opening (staying within the shaded area), as indicated.
3.8 Install the drain cup over the nozzle; attach it with a #6 x 3/8" sheet metal screw. (See Figure 3, left.)
3.9 Install 3/16" I.D. tubing on the copper humidifier
drain and run it to a waste
Figure 3drain. (An occasional drip from the drain tube when the humidifier is operating is normal.)
3.10 Attach the humidifier with four #8 sheet metal screws.
INSTALLING THE INSPECTION WINDOW:
NOTE: A clear, plastic window is supplied with the humidifier to be mounted on the ductwork. This allows you to observe whether the humidifier is functioning properly, and whether there is water impinging on parts or surfaces within the system.
4.0Select a mounting location on the ductwork where the humidifier spray nozzle can be viewed easily.
4.1Drill a 3/8" hole and cut a 4-1/2" x 2" rectangular opening. DANGER: Make certain that you are not drilling or cutting into any air conditioning or elec- trical accessories during installation.
4.2Position the window over the opening; mark and center-punch the two mounting hole locations.
4.3Drill the two 3/32" mounting holes.
4.4Attach the window with the two #6 Phillips-head screws provided.
