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INSTALLATION INSTRUCTIONS
ELECTRICAL POWER WIRING & SHUT-OFF SWITCH
Only qualified electrical personnel should perform field wiring procedures. Improper wiring or contact with energized circuits
can cause property damage or severe personal injury.
All wiring must be installed in accordance with all governing electrical codes and
with the wiring diagram provided inside the front panel .
Do not loop power wiring .
Do not use aluminum wire .
A safety grounding system that meets all governing electrical codes is required .
The ground connection must be made with solid metal to metal connections .
Ground wire must be the same size as the power wiring .
With factory settings, the Steam Humidifier draws 11 .5 amps +/- 10% . Use a
minimum 20 amp dedicated circuit when installing to operate at 11 .5 amps . The
Steam Humidifier can be set to draw 16 .0 amps +/- 10% by repositioning dip
switch #1 on the control circuit board (see Figure 10) . When set to 16 amps, use
a minimum 25 amp dedicated circuit . For both applications, size wire according to
local codes .
The Steam Humidifier is shipped from the factory wired for 240 VAC operation,
but it can operate on 120, 208 or 240 VAC . If using 120V or 208V, move the
black/white jumper wire to the proper tab on the control circuit board.
See Figures 11, 12, 13 .
(CONTINUED)
CAUTION
WIRING INSTRUCTIONS
Install disconnect switch (not provided) between line
power source and humidifier .
Knock-outs for power wiring and low voltage control
circuit wiring are provided .
Connect power and ground wiring as shown in
appropriate wiring diagram .
• 240 VAC – Figure 11
• 208 VAC – Figure 12
• 120 VAC – Figure 13
Do not run high voltage power lines over internal circuit
boards .
13
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