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Summary of Contents for CIAT LR Series
- Page 1 NR 93.52 A 07 - 2000 CIAT CIAT CIAT CIAT...
- Page 2 All the units are fitted with the MRS -4. type display and MRS -4. control electronic module. (1) Run/stop key with display (2) Heating / cooling selection key (3) Lamps test key (4) Setting 2 selection key (5) Resetting key (6) Parameters and setting adjustment keys (7) "Heating"...
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Page 3: Main Functions
Main functions • • • • • • • • Water temperature control: - Either on the evaporator (chilled water control). - Or on the condenser (hot water control). • • • • • Two types of control are possible : - Gap on the water return. - Page 4 Connections • • Water connections: In all cases, the characteristics of piping must comply with the operating conditions. For the connections, respect the flow direction mentioned on the unit. The piping diameter is not necessarily the same as the one planned on the exchangers. •...
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Page 5: Operation
Table of copper piping diameters 15 m max. length with a 6 m maxi change in level. 1000 1202 1203 1400 Circuit/ Nominal 2x35 2x40 2x50 2x60 40+80 40+ 00 Output HP ∅ ∅ Discharge piping "5/8 "5/8 "5/8 2" /8 "5/8 2"5/8 "... - Page 6 Double condenser units. • • • • • • • • WATER + WATER : Version LRT CIATCOOLER The CIATCOOLER double condenser water chillers are designed so as to transfer and recover the calories which are normally utilized and rejected by the traditional units. In a standard installation where cooling is required all year, the calories produced by the units are usually discharged by the air cooled condenser or by a cooling tower or a dry cooler...
- Page 7 The operation will be as follows: • In the case where the recovery circuit evacuates all of the calories produced, the fans will be stopped, the condensing • pressure will be maintained by discharging the calories on the water circuit. •...
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Page 8: Check Before Commissioning
Works before commissioning - For all the units, in order to avoid transmission of vibrations to the building structure we advise to position antivibration mounts between the frames of the units and the ground, and flexible connectors on the hydraulic circuits. - For units requiring a refrigerant connection, extra flexible connections on the refrigerant circuits will be planned. - Page 9 LR, LRP, LRT : LR, LRP, LRT: Once the above checks have been made : M / A ( - Press the M/A key (ref. 1 - page 2). - The units must start after a 2 min delay. – - The compressors start in cascade.
- Page 10 Operating limits • • Load restriction : When starting the unit, the water temperature at the 20 °C. evaporator inlet can reach 20 °C max.. In order to avoid the cuts in high pressure, the electronic module unloads the last stage of each circuit.
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Page 11: Electrical Characteristics
Electrical characteristics LR - LRN - LRT - LRP 1000 1202 - Compressors 230V* 218(2x109) 278(2x139) 314(2x157) 390(2x195) Nominal intensity 400V 127(2x63,5) 162(2x81) 182(2x91) 226(2x113) LR - LRN - LRP - LRT 1000 1202 1,08 2,73 Nominal intensity LR - LRN - LRT - LRP 1203 1400 1600... - Page 12 Regulation of safety and control devices Function Adjustments Units Symbol MRS1-4.1. + MRS1-4.1 On the water inlet or outlet by display on the MRS1-4.1 Chilled water inlet sensor + MRS1-4.1 Capacity stages control front panel. +12 °C + 14 °C. <+12 °C.
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Page 13: Maintenance
LR, LRP, LRT. Service sheet and check list series LR, LRP, LRT. Date Time Suction pressure °C Su tion temperature Condensing pressure °C Condensing temperature °C Compressed gas inlet temperature °C Liquid outlet temperature °C Air inlet temperature °C Water inlet temperature °C Water inlet temperature °C...
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