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DJ & DG MANUAL
25 of 34
May 12 R2
Emergency Shut Down
1.
Set the electrical disconnect switch to the “OFF” position.
2.
Close the main manual firing valve in the manifold on gas fired heaters, or the manual oil valve
on oil fired heaters.
Start-Up After Extended Shut-Down Period
When unit is shut down for an extended period of time the same start-up procedures, as outlined in
previous sections, should be followed.
CONTROL SETTINGS
The following settings of the adjustable controls are acceptable for most applications. Refer to unit function
and wiring diagram for settings specific to your unit.
Single and two stage ductstat: 55 – 70°F (13 – 21°C).
Single, two stage and modulating space thermostat: 68 – 74°F (20 –23°C).
Remote temperature selector: 60 – 70°F (16 – 21°C).
Mixed air temperature controller: 55°F (13°C).
Low discharge air limit: 40°F (5°C).
Ambient control: 50 – 70°F (10 – 21°C).
Economizer ambient changeover control: 70 – 75°F (21 – 24°C).
MAINTENANCE
Warning:
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This unit is connected to high voltages. Electrical shock or death could occur
if instructions are not followed. This equipment contains moving parts that
can start unexpectedly. Injury or death could occur if instructions are not
followed. All work should be performed by a qualified technician. Always
disconnect and lock out power before servicing. DO NOT bypass any
interlock or safety switches under any circumstances.
Warning:
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Follow the cleaning instructions and recommended inspection schedule to
reduce the risk of mold or other bacterial growth. Property damage or
personal injury claims may result from mold or biological growth arising from
improper installation, inadequate maintenance, or failure to inspect.
Engineered Air has no responsibility for and makes no express or implied
warranties regarding mold or bacterial growth or any other indoor air quality
issues. If mold or biological growth is present, determine and fix the cause.
Properly remove and dispose of the contamination. Properly clean and
sanitize the affected area using only approved sanitizers suitable for HVAC
equipment.
