User manual

Checklist for Completed Installation
Liebert
®
DS
™
126
11.0 CHECKLIST FOR COMPLETED INSTALLATION
11.1 Moving and Placing Equipment
___ 1. Unpack and check received material.
___ 2. Proper clearance for service access has been maintained around the equipment.
___ 3. Equipment is level and mounting fasteners are tight.
___ 4. If the equipment has been disassembled for installation, unit must be reassembled per
instructions.
11.2 Electrical
___ 1. Supply voltage and phase matches equipment nameplate.
___ 2. Wiring connections completed between disconnect switch, evaporator unit and heat rejection
equipment.
___ 3. Power line circuit breakers or fuses have proper ratings for equipment installed.
___ 4. Control wiring connections completed between indoor evaporator and heat rejection
equipment.
___ 5. All internal and external high- and low-voltage wiring connections are tight.
___ 6. Confirm that unit is properly grounded to an earth ground.
___ 7. Control transformer setting matches incoming power.
___ 8. Electrical service conforms to national and local codes.
___ 9. Check blowers and compressors (scroll only) for proper rotation.
___ 10. Upflow units only: Field installed low volt wiring routed with loop to allow electric box to
swing.
___ 11. For units with variable speed drive (VSD) operating on Delta-connected power, ensure that
the EMC filter has been disconnected; see 8.4 - Variable Speed Drive for details.
___ 12. Check for loose electrical connections on steam generating humidifier. Confirm that electrode
plugs are pressed firmly onto the electrode pins.
11.3 Piping
___ 1. Piping completed to refrigerant or coolant loop (if required).
___ 2. Piping has been leak-checked, evacuated and charged (if required).
___ 3. Additional oil has been added for system charges over 40 pounds (18.1kg) per circuit (see
9.2.2 - Scroll and Digital Scroll—Additional Oil Requirements.
___ 4. Piping is properly sized, sloped and trapped as shown in the piping schematics
___ 5. Check piping inside and outside of equipment for proper support and adequate spacing to
prevent rub-through.
___ 6. Ensure TXV equalizer lines and sensing bulb lines have sufficient clearance and do not rub
against other refrigerant lines.
___ 7. Ensure that factory clamps have been reinstalled.
___ 8. Drain line connected and pitched per local code.
___ 9. Water supply line connected to humidifier.