Pre-Start Of Unit; Servicing Control Panel Components - Daikin DPS 003 Manual

Sequence of Operation

Pre-Start of Unit

All units are completely run tested at the factory to promote
proper operation in the field. However, to ensure proper
operation once the unit is installed, the following check, test,
and start procedures must be performed to properly start the
unit. To obtain full warranty coverage, complete and sign the
check, test, and start form supplied with the unit and return it
to McQuay International.
A representative of the owner or the operator of the
equipment should be present during start-up to receive
instructions in the operation, care, and maintenance of the
unit.
Electric shock and moving machinery hazard . Can
cause severe equipment damage, personal injury, or
death .
Disconnect

Servicing Control Panel Components

Before Start-Up
1. Remove shipping bolts from compressor(s).
2. Verify that the unit is completely and properly installed
with ductwork connected.
3. Verify that all construction debris is removed, and that
the filters are clean.
4. Verify that all electrical work is complete and properly
terminated.
5. Verify that all electrical connections in the unit control
panel are tight, and that the proper voltage is connected.
6. Verify all nameplate electrical data is compatible with
the power supply.
66
DANGER
7. Verify the phase voltage imbalance is no greater than
2%.
8. Verify that gas piping is complete and leak tight.
9. Verify that the shutoff cock is installed ahead of the
furnace, and that all air has been bled from the gas
lines.
10. Verify installation of gas flue and outside air vents.
11. Manually rotate all fans and verify that they rotate
freely.
12. Verify that the evaporator condensate drain is trapped
and that the drain pan is level.
13. If unit is curb mounted, verify that the curb is properly
flashed to prevent water leakage.
14. Review the equipment and service literature, the
sequences of operation, and the wiring diagrams to
become familiar with the functions and purposes of the
controls and devices.
15. Determine which optional controls are included with
the unit.
Power-Up
1. Close the unit disconnect switch.
2. Power should now be supplied to the control panel.
Phasing the Rebel Unit
The supply and return fans, inverter compressor, and
condenser fans are all inverter driven and are DC voltage
motors. Care has to be taken to ensure proper phasing.
1. With a phase rotation indicating tool ensure phase
rotation per the wiring diagrams on the inside door of
the control panel.
Fan Start-Up
1. Verify all duct isolation dampers are open.
2. Place the unit into the "Fan Only" mode through the
keypad.
3. The controller should enter the "Startup Initial"
operating state. If the fan does not run, check the
manual motor protectors or that the circuit breakers
have not tripped.
4. Verify the rotation is correct.
IM 1125-5