VZH028-VZH044 inverter compressors Electrical connections Single version Manifold version Quick connect spade terminals Model number Serial Number Refrigerant Manufacturing year Supply voltage range max operating current Lubricant type and nominal charge Electronic frequency & compressor frequency VZH028 - VZH044 compressors can be powered by the dedicated variable speed drive or third party drive. When Danfoss drive is selected, check carefully for compatibility between compressor model and variable speed drive. Variable speed drive rated power output 6 kW 7.5 kW 10 kW All the above limits, temperatures and speeds, are secured by parameters in the drive and application controller softwares. Installation and servicing of the compressor by qualified personnel only. Follow these instructions and sound refrigeration engineering practice relating to installation, commissioning, maintenance and service. The compressor must only be used for its designed purpose(s) and within its scope of application (refer to «operating limits»). Consult Application guidelines and datasheet available from cc.danfoss.com Never operate compressor without terminal box cover in place and secured. Under all circumstances, the EN378 (or other applicable local safety regulation) requirements must be fulfilled. Wear protective goggles and work gloves. The compressor must be handled with caution in the vertical position (maximum offset from the vertical : 15°). The compressor is delivered under nitrogen gas pressure (between 0.3 and 0.4 bar / 4 and 6 psi). Do not disassemble bolts, plugs, fittings, etc... unless all pressure has been relieved from the compressor. Basic connections - Depending on the frequency converter version, the physical position of individual connectors may differ from below diagram. Always make sure that the compressor - terminals T1, T2, T3 are connected to the frequency converter terminals 96, 97, 98 respectively. he compressor motor cable must be shielded -T and the armoured part must be connected to ground on both cable ends; at the side of the FRCC.PI.035.A1.02 - 8510280P01A compressor and at the side of the frequency converter. se an EMC cable gland for cable installation and -U perfect grounding; The metallic terminal box of the compressor has a paint-free surface around the connection hole for better conductivity. - low pressure safety switch is mandatory A to avoid compressor vacuum operation. t start-up, verify that the compressor rotates -A in the right direction and pumps. © Danfoss | DCS (CC)| 2015

Install the electrical part on optical part. Make sure the cable outlet downside vertically Electrical connections / Wiring +24 V OUT DIGI IN DIGI IN DIGI IN DIGI IN COM D IN 1: Power supply wire 2: Power supply wire 3: Output wire 4: Not used Install the screw-in optical part on oil level switch port. (Factory preset for manifold version VZH compressor.) Oil level switch assembly T1/U T2/V T3/W Legends: Ana: Analogue Dig: Digital in: Input out: Output COM: Common NC: Normally-closed NO: Normally-open See at the correct diagram corresponding to different power supply models for proper wiring...

1 – Introduction These instructions pertain to the VZH08VZH044 variable scroll compressors used for air-conditioning and reversible heat pump systems in residential applications. They provide necessary information regarding safety and proper usage of this product. 2 – Handling and storage Handle the compressor with care. Use the • dedicated handles in the packaging. Use the compressor lifting lug and use appropriate and safe lifting equipment. Store and transport the compressor in an • upright position. tore the compressor between -35°C and 55°C •S / -31°F and 131°F. • Don’t expose the compressor...

system equilibrium to ensure proper oil return to the compressor. This oil check has to be done over the speed range to guarantee: - a good oil return at low speed with minimum gas velocity. - good oil management at high speed with a maximum oil carry over. • espect the operating limits. R • Check all tubes for abnormal vibration. Movements in excess of 1.5 mm / 0.06 inch require corrective measures such as tube brackets. hen needed, additional refrigerant in liquid •W phase may be added in the low-pressure side as far as possible from the compressor. The compressor must be operating during this...