Chiller Removal and Installation of New Keyter Chiller
Job Description: Chiller Removal and Installation of New Keyter Chiller
Area: Water Lane, Richmond
Issue Identified: Following recent chiller failure we proposed the following schedule of works.
Method statement, Scope of Works, and Specification
- Attended site to decommission and drain down current systems including electrical isolations.
- Using specialist lifting and cutting equipment we dismantled and removed the chiller system for disposal via a waste agent.
- Completed all waste transfer documentation.
- Prepared plant room and associated flooring base with Tico pad in preparation for new chiller installation.
- Delivery of new chiller system to our ACES factory for safe and careful dismantling including recovery of refrigerant into certified receiver cylinders.
- Delivered to site with specialist lift modules and parts on a pre-planned out of hours weekend attendance.
- Pieced together all modules following manufacture specification including pressure testing using oxygen-free nitrogen for a minimum of 48 hours followed by evacuation and charging to plate requirement.
- Reconnected current chilled water pipework including the installation of new strainers and insulation. We also installed a flow balancing valve as to match the flow requirement to manufacturers specifications.
- Minor alterations made to louvres to allow for adequate condenser fan flow.
- Commissioned and tested including follow up leak testing.
- The chiller supplied had a standalone control panel integrated BMS and connection was carried out by the on-site contractor. We recommend that any BMS requirements were highlighted prior to purchase instruction as to suggest a control strategy and ensure the correct BMS card was ordered with the chiller.
Chiller design and specification:
High capacity chiller ATLANTIA POWER KWP 1240 R Air-condensed water chiller, with V coils and built in a self-contained structure, brand KEYTER, series ATLANTIA POWER, model KWP 1240 R for 207.6 kW (cooling), structure and chassis in galvanised steel shell with epoxy-polyester thermoset coating without removable panels. – Power supply 400V-III-50Hz (without neutral). – Refrigerant R-410A. – Nominal cooling capacity (Water inlet/outlet temperature 12/7 oC (54/44 oF) and outdoor temperature 35oC (95oF)): 207.6 kW. – Nominal absorbed power: 74.3 kW. – Air flow: 48000 m3/h. – Waterflow: 35.8 m3/h. – Hydraulic connections: VICTAULIC 4. – Hermetic scroll compressors mounted on shock absorbers, internal klixon, carter resistance, retention valves and air discharge temperature probe. – Number of compressors / number of circuits / Power steps: 2/1/2. – Large-surface heat-exchange coil, in copper pipes and aluminium fins, with sizing for external temperatures up to 45oC. – Low-noise axial EC motor-fans with AXITOP, with electronic internal protection, mounted on nozzles, dynamically balanced blades, and external protection grille. – Modulating control of condensing pressure. – Stainless steel plates heat exchanger with copper brazing. – Refrigeration circuit in annealed copper pipes with HP and LP switches, dehydrant antacid filter, sight glass and electronic expansion valve. – Full power board with internal protection and MCB switches for compressor and motor-fans. – Electronic control AQUAMANAGER for unit regulation. – PGD terminal. Version S: hydraulic circuit with flow switch, air valve and draining valve.