700M OWNER’S MANUAL

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OPERATING INSTRUCTIONS –

MODELS 400, 500, 600 & 700

The Automatic Digital Humidier Control (ADHC) offers two modes

of operation, Automatic or Manual. An explanation of both modes

follows. (See FIGURE A on page 7 for Automatic mode. See FIGURE B

on page 8 for Manual mode.)

When in the Automatic mode, this system offers the following benets:

• You will always receive the optimal amount of humidity so

that your home and its furnishings are always protected from

the damaging effects of excess condensation or low humidity

during the heating season. The control automatically adjusts your

home’s RH based on the outdoor temperature, increasing the time

maximum comfort is maintained.

• Simple operation with few adjustments. The control eliminates the

need to manually adjust the control when outdoor temperature

changes.

AUTOMATIC DIGITAL HUMIDIFIER CONTROL INDICATOR LIGHTS

Service Required: The red light indicates that the humidier is not

operating normally and that service is required.

Change Water Panel: The yellow light indicates that it is time to

change the Water Panel in the humidier. Refer to the ANNUAL

MAINTENANCE section for instructions on changing the Water Panel

or call your HVAC contractor for service.

Humidier On: The green light indicates that the humidier is actively

adding healthy humidity to your home.

BLOWER ACTIVATION

The BLOWER ACTIVATION switch is set to the ON position to allow the

humidier control to activate the HVAC system fan for maximum

humidication. For this setting the Models 500, 600 and 700 must be

connected to hot water.

This function will operate in two ways:

1. If the HVAC system has been idle for one hour, the humidier

control will activate the HVAC system fan to sample the air for 3

minutes. If the RH is lower than the set point, the humidier control

will activate the humidier and keep the fan running.

2. If the RH set point has not been reached by the end of a call for

heat, the control will continue to operate the humidier and the

HVAC system fan.

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OWNER’S MANUAL - Page 6