Lennox INNOV DM R Series, Инструкция по применению

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INNOV@ ECFAN DMR -AGU-0912-E • 15 •
Tab. 6 Setting of control devices
Control device Set point
Differential air pressure switch (outlet air flow) Pa 50
Differential air pressure switch (dirty filter) Pa 250
Values to be calibrated depending on the application.
Tab. 7 Setting of safety-control devices
Control device Activation Differential Resetting
Maximum pressure switch Bar 28.0 4 Manual
Minimum pressure switch Bar 1.4 1.3 Automatic
Modulating condensation control device Bar 14 7
Time lapse between two compressor starts s 480 - -
8.2 Maximum pressure switch
The high pressure switch stops the compressor when the outlet pressure exceeds the set value.
Warning: Do not attempt to change the setting of the maximum pressure switch: Should the latter
fail to trip in the event of a pressure increase, the pressure relief valve will open.
The high pressure switch must be manually reset; this is possible only when the pressure falls below the set differential
(see Tab. 7).
8.3 Minimum pressure switch
The low pressure switch stops the compressor when the inlet pressure falls below the set value for more than 120
seconds. The switch is automatically reset when the pressure rises above the set differential (see Tab. 7).
9 Maintenance
The only operations to be performed by the user are to switch the unit On and Off.
All other operations are to be considered maintenance work and must thus be carried out by qualified personnel trained
to do their job in accordance with current laws and regulations.
9.1 Warnings
All the operations described in this chapter MUST ALWAYS BE PERFORMED BY QUALIFIED
PERSONNEL ONLY.
Before carrying out any work on the unit or accessing internal parts, make sure you have
disconnected it from the mains electricity supply.
The upper part and the outlet pipe of the compressor reach high temperatures. Be especially careful
when working in the surrounding area with the panels off.
Be especially careful when working in proximity to finned coils since the 0.11 mm thick aluminium fins
can cause superficial injuries due to cuts.
After completing maintenance jobs, always replace the panels enclosing the units and secure them
with the fastening screws provided.