Chapter 3 Start-Up; Check-Out Of Cooling Cycle; Check-Out Of Heating Cycle; Check-Out Of High Temp. Alarm And/Or Gas Detection Device - Industrial Climate Engineering SlimPac ECUA12 Installation & Operation Manual

3.1

Check-Out of Cooling Cycle

Procedure:
1. Set the cooling set point temperature on the wall thermostat to a point higher than the ambient tem-
perature. Set the heating set point temperature to a temperature that is lower than the ambient.
2. Set the thermostat system switch in the AUTO position. Nothing should operate at this time.
3. Set the time delay in the control box to three minutes.
4. Slowly lower the thermostat's cooling set point temperature until the switch closes. The indoor fan
should operate.
Once the indoor fan turns on, allow approximately three minutes for the compressor to start.
Note that the outdoor fan may not come on immediately, because it is cycled by refrigerant pressures.
If the unit fails to operate, refer to the troubleshooting information in Chapter 4.
Follow the same procedure for additional units.
3.2

Check-Out of Heating Cycle

Procedure: (Applies only to units with resistance elements)
1. To stop the cooling, slowly raise the cooling temperature set point to a temperature higher than the
ambient.
2. Raise the heating temperature set point to a setting which is higher than the ambient temperature.
The blower and electric heat should immediately cycle on.
3. Move the system switch to the "OFF" position. All functions should stop.
3.3

Check-Out of High Temp. Alarm and/or Gas Detection Device

Procedure:
1. Set the system to operate in the cooling mode as described in section 3.1 above. Trigger the normally
closed external device (high temperature alarm or gas detection device) to open and the ECUA
should shut off.
2. Set the system to operate in the heating mode as described in section 3.2 above. Trigger the normally
closed external device to open and the ECUA should shut off.
ICE SlimPac ECUA12-18 I&O Manual 03/2019 Rev.2

Chapter 3 Start-Up

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