PLUMBING THE HUMIDIFIER:
5.0 Select the nearest cold water pipe and install the saddle connector and
needle valve, supplied with this unit.
Use copper tubing only.
• The needle valve is a self-piercing valve when installed on copper pipe.
Follow the instructions supplied with the valve.
• Mount the valve so that water will come from the top or side. This will reduce
the chance of minerals clogging the valve.
5.1 Follow these compression plumbing tips:
• Lightly clean the tubing ends with fine sandpaper before making connections.
• Make sure the tubing is fully inserted into the fitting before tightening the
compression nut.
5.2
IMPORTANT:
After attaching the saddle valve, thoroughly flush the supply
tubing to clear the line.
Otherwise, debris could block the water flow at the solenoid
valve.
5.3
IMPORTANT:
To assist you with cleaning, note the proper orientation of
parts for assembly and disassembly (Figure 4, below).
5.4 Slide the hex nut over the copper tubing end. Slide the brass ferrule over the
tubing. Push the end of the tubing into the threaded fitting and slide the hex nut up
to the fitting. Tighten the nut.
5.5 Slide the bushing over the tubing; insert the bushing through the humidifier
wall until it snaps into place.
5.6 Open the needle valve at the cold water pipe.
IMPORTANT:
Check all fittings
for leaks.
MOUNTING THE HUMIDISTAT:
6.0
NOTE:
See the installation instructions packaged with the enclosed humidi-
stat (humidity controller).
6.1
NOTE:
When wiring the unit to a system that has a multi-speed blower
motor, or that uses a motor other than 120 VAC, include the Skuttle A50 Interface
Relay in your installation. (See Figure 5, below.)
HUMIDIFIER CHECKOUT:
Check the humidifier operation by following these procedures:
7.0 Turn on the water valve to the humidifier.
7.1 Turn the humidistat to the “ON” position.
7.2 Set the furnace thermostat high enough to allow the furnace to come on.
When the furnace blower comes on, the humidifier should start spraying.
7.3 Check the humidifier operation by turning the humidistat off, making sure the
humidifier stops spraying.
NOTE:
If the humidifier continues spraying, there may
be an error in wiring. Review the wiring diagram, above.
Humidistat
24-Volt Transformer
(not supplied)
120-VAC
Neutral
Furnace Fan Switch
Furnace Blower
Light
Solenoid
FIGURE 5 (Wiring Diagram)
•
Indicates Wire Connection
24 VAC
120 VAC
FIGURE 6
Brass Compression Fitting
Humidifier
Filter
Copper Supply Tubing
Brass Ferrule
Brass Nut
Bushing
FIGURE 4
TABLE 3
HOMEOWNER HUMIDIFIER TIPS:
9.0 If the mineral content of the water in your home is above normal, a lime
dust may form in the duct distribution system, as well as in your living areas. Even
though these lime deposits may adhere to the sides of your ductwork, they will not
significantly affect air distribution.
9.1 In a home that has had little or no humidification, a new humidifier may
operate almost continuously to attain the desired level of relative humidity. This is
because furniture, woodwork, carpeting, plaster and houseplants will absorb the
newly-produced humidity to reach normal moisture levels. This period of adjust-
ment will take approximately three weeks.
9.2 Natural drafts in the home can cause humidified air to escape through open
fireplace dampers. Make sure they are closed when not in use.
9.3 When the weather turns warmer, humidification is unnecessary.
IMPORTANT:
Turn the water and electrical power to your humidifier “OFF” after each
heating season.
9.4 When water frequently flows through your humidifier, the nozzle and/or
solenoid valve can become clogged by lime and other mineral deposits, thereby
diminishing humidification effectiveness. When this occurs, you should replace the
affected part(s).
NOTE:
It’s a good idea to replace the spray nozzle at the start
of each heating season to help ensure continuous, trouble-free operation of your
humidifier.
(You may wish to have your heating or plumbing contractor perform this
service for you.)
9.5 The inline water filter should be cleaned at the end or beginning of each
heating season. To do so, loosen the hex nut (see Figure 4, left, top), slide the
tubing out of the tube connector and remove the filter. At this time, the solenoid
valve may be disassembled for cleaning.
9.6
IMPORTANT:
For parts and service, contact your local authorized dealer.
CAUTION:
If excessive moisture appears on windows or walls, reduce the humidity
setting on your humidistat enough to eliminate condensation. If the situation
continues, turn off the water valve that permits water flow to the humidifier, and
contact your heating or plumbing contractor.
EXAMPLE OF NOZZLE SELECTION
(from Table 2 on front)
:
A home which
requires .50 gallons of water per hour for proper humidification, and which has a
water pressure of 80 psi (551.58 kPa), would need a .37 gph (1.40 lph) nozzle to
do the job.
FIGURE 5 (Wiring Diagram)
7.4 Set the furnace thermostat low enough to allow the furnace to shut off. The
humidifier should stop spraying either before or as the furnace blower shuts off.
NOTE:
Again, if the humidifier continues spraying, there may be an error in wiring.
Consult the wiring diagram, above.
7.5 If the humidifier shuts off correctly,
repeat steps 7.2 through 7.4 at least
five times.
Each time, check to see that no water impinges on ductwork or any
part of the heating system
NOTE:
If water impingement or fallout could occur
, you
must install a suitable drain pan, plumbed with an adequate runoff drain.
7.6 Set the furnace thermostat to the desired setting.
7.7 Finally, set the humidistat as recommended in Table 1 on the front of these
instructions.
HUMIDIFIER PARTS:
8.0 Parts may be ordered through your local heating or plumbing dealer. (See
Figure 6 and Table 3, right, top).
8.1 When ordering repair parts, always give the following information:
• Model Number
• Serial Number (if possible)
• Part Number (see Table 3, right)
• Part Name
Wiring Diagram / Figure 5
Humidistat
24 Volt Transformer
(not supplied)
120VAC Neutral
Furnace Fan
Switch
Furnace Blower
24 VAC
120 VAC
Light
Thermal Switch Solenoid
• Indicates Wire
Connections
HI TEMPERATURE HEATING SYSTEMS
Key No.
Part No.
Description
Qty.
Key No.
Part No.
Description
Qty.
PARTS LIST
HEAT PUMPS AND HIGH-EFFICIENCY FURNACES
