Fuses; Electric Reheat; Humidifier; Humidifier Canisters - Data Aire DAPA-2.5 Installation, Operation & Maintenance Manual

Fuses

Fuses may occasionally require changing especially with installations where the voltage is not
consistent. Drops in voltage can create brief periods of high amp draw, causing fuses to blow. Always
replace fuses with those of the equivalent rating with regard to 1) amperage, 2) voltage, and 3) speed.
For instance, motors are inductive loads which require time delay fuses. Electric reheat and humidifiers
are resistive loads requiring fast acting fuses.

Electric Reheat

Electric reheat is a standard feature on Mini-Plus units. The electric reheat elements are a finned
enclosed, sheath type, fabricated of stainless-steel core sheath with plated fins to withstand moist
conditions. The reheat is installed on the air discharge side of the cooling coil and has three (3) stages.
The reheat can maintain room dry bulb conditions when the system is calling for dehumidification. The
reheat section includes a safety switch to protect the system from overheating. The low watt density
elements eliminate ionization associated with open air electric resistance heating.
Heating elements do not normally require maintenance. However, they may accumulate a film of dust
or dirt when unused for extended periods of time. When energized, the burning debris can create smoke
or an unpleasant odor. To help avoid a problem, periodic cleaning is recommended.

Humidifier

If the unit is provided with an optional self-contained, microprocessor-controlled steam generator type
humidifier. The steam generating humidifier uses a disposable cylinder with electronic controls. The
humidifier discharges pure steam with no material dust carryover and has a self-regulating automatic
flush cycle.
Cylinders are disposable and do not requiring cleaning or maintenance. The humidifier fill level, water
conductivity and flush rate automatically adapt, both in frequency and duration, to variations in the
incoming water. The humidifier assembly is capacity field adjustable and includes a high water probe.
Drain duration and drain interval are also field adjustable.

Humidifier Canisters

The steam generator type humidifier does not require maintenance other than to replace the canister
as required. The frequency of change will depend on usage and water type. A set of the humidifier
manufacturer's instructions is included with the paperwork placed inside the unit when it ships.

Refrigerant Filter Drier

Factory installed refrigerant filter driers do not normally require maintenance. When replacing
compressors or other repairs that open the refrigeration system to atmosphere, it is advisable to replace
the filter drier. The equivalent type and size should be used.
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