4_ Peei off the paper from the back of the gasket and stick the gasket on the return air pbnum.
5.Remove the humidistat knob by gently pulling straight ouL Remove the cover screw and the cover (Fig. 12).
KnobCover
Screw (Under Knob)
Fig, 12
6_ Mount the humidistat on the return air plenum with the screws, furnished.
7.Follow the wiring diagram for the standard or alternate method of wiring you selecL Use an approved eUectrical 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,
8_ 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.
g_ TEST - Replace the cover on the humidifier conduit box. Replace the cover and knob on the humidistaL 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 aii the wiring. Make sure everything is connected properly.
CAUTmON: 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.
STANDARD WmRmNG METHOD
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 wiii 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.
Fig, 13
CAUTmON: 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. Foiiow iocai eiectricai 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
Junction Box
Ground to copper or galvanized water pipe.
Fig, 14
