Kenmore CENTRAL HUMIDIFIER 303.9380612 User Manual download pdf (Page 8)

4. Peel off the paper from the back of the gasket

and stick the gasket on the return air plenum.

5. Remove the humidistat knob by gently pulling

straight out. Remove the cover screw and the

cover (Fig. 12).

Knob

Cover

Fig. 12

Mount the humidistat on the return air plenum

with the screws, furnished.

Follow the wiring diagram for the standard or

alternate method of wiring you select. Use an

approved electrical cable containing copper

conductors only. Make all connections inside the

junction boxes and use approved strain relief or

conduit connectors to secure the cable to the

junction boxes per local code.

For maximum safety, the humidifier must be

grounded. Use separate wire or ground to the

grounded 120V electric supply junction box by

using electrical cable with ground wire, and

connecting to the green wire in the humidistat

junction box and the humidifier junction box.

9. TEST - Replace the cover on the humidifier

conduit box. Replace the cover and knob on

the humidistat. Turn electrical power on at the

fuse box, turn the humidifier switch on (it is on

the left side of the upper case exterior) and turn

humidistat knob to “TEST” position to check for

humidifier blower operation. The furnace may

have to be running for the humidifier blower to

operate depending on electrical wiring method

used, if the humidifier blower does not start,

turn off electricity at the fuse box. Go over each

step in the wiring process. Retrace all the wiring.

Make sure everything is connected properly.

CAUTION: Do not leave the humidistat set to the

“TEST” position.

After the humidifier blower operation has been

successfully tested, turn off electricity at the fuse

box and continue with water supply installation.

To connect the wiring it is necessary to remove the

cover of the conduit box located on the left side of

the upper case assembly (Fig. 13).

When the humidifier is wired using the standard wiring

method, it operates whether the furnace blower is

running or not, (you will hear the humidifier run), it

sounds much like your furnace because a blower is

used to provide maximum humidity from this humidifier.

This air movement sound is normal.

STANDARD WIRING METHOD

CAUTION: Connect the humidifier to 120V, 60 Hz

A.C. electric power only. Turn off the power at the

fuse box before making any line voltage connections.

Follow local electrical codes. Be sure proper grounding

procedure is followed. If in doubt, consult a competent

electrician.

DIRECT LINE WIRING METHOD FOR ANY

FURNACE

The easiest wiring method for the do-it-yourself

installer is direct line wiring. The humidifier will run

whenever the humidistat calls for humidity, whether

the furnace blower is running or not (Fig. 14).

CJJflDi—¿a

_______

GREEN OR aARFiGROUfJDi

ACKiHOTi—.. ..... BLACKmTl .

...............................................................

120 VAC

ELECTRIC SUPPLY

120

VAC-,

Junction Box

Humidistat

Junction Box

'Ground to copper or

galvanized water pipe.

Fig. 14

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 17 18

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Kenmore CENTRAL HUMIDIFIER 303.9380612 User Manual Page 8

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