Related Manuals for Marstair 550 Series
Summary of Contents for Marstair 550 Series
- Page 1 INSTALLATION INSTRUCTION 550 SERIES CONDENSING UNITS AND 551 SERIES HEAT PUMP OUTDOOR UNITS 55008279-16...
- Page 2 GENERAL TEV Ltd recommend that personnel working on this equipment be skilled and fully conversant with the appropriate Air Conditioning, Refrigeration and Electrical practices and have sound knowledge of current Industrial Safe Working practices. These units are supplied pre-charged with R407C refrigerant and polyolester oil. Do not open the valves until the system is fully installed.
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Page 3: Dimensions And Weights
DIMENSIONS & WEIGHTS MCU+ 15-100 & MHPUE 15-90 ( Dimensions in mm.) MOUNTING HOLES Weight (kg) MODEL 1 Ph 3 Ph MCU+ 15 300 560 525 185 60 295 MCU+ 20 300 560 525 185 60 295 MCU+ 30 300 560 525 185 60 295 MCU+ 40 300 560 525 185 60 295 MCU+ 50... - Page 4 MCU+ 130 - 200 and MHPUE 100 – 180 ( Dimensions in mm.) MOUNTING HOLES MODEL Weight (kg) MCU+ 130 1000 1020 MCU+ 150 1000 1020 MCU+ 165 1000 1020 MCU+ 180 1100 1215 MCU+ 200 1100 1215 MHPUE 100 1000 1020 MHPUE 130...
- Page 5 CALCULATING EQUIVALENT LENGTHS The effects of bends and fittings must be taken into account. The table on top of page 5 covers the fittings most likely to be encountered in installation. ACTUAL PIPE LENGTH + TOTAL EQUIVALENT FITTING LENGTHS = TOTAL EQUIVALENT LENGTH FITTING LOSSES in equivalent straight lengths of pipes (m) INSTALLERS TABLE PIPE SIZE (outside diameter in inches)
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Page 6: Heat Pump Heating
RESTRICTORS Outdoor units (cool only & heat pumps) are supplied with expansion assemblies and cooling restrictors fitted. MCU+ Restrictor 0.033 0.033 0.040 0.044 0.046 0.050 0.052 0.057 0.063 0.068 0.071 0.080 0.082 HEAT PUMP HEATING All heat pump units have an additional expansion assembly supplied loose inside the unit. This is to be fitted to some indoor units for heating. - Page 7 ELECTRICAL The installer supplies mains, control and interconnecting cables: equipment must be earthed. Wiring must be carried out in accordance with local and national codes. Interconnecting wiring diagrams are in the indoor unit installation instructions. Mains supply cables must be size compatible with the recommended fuse (see indoor unit instructions). An all pole isolator switch should be positioned within easy reach of the indoor unit.
- Page 8 REFRIGERANT IF NO ADDITIONAL REFRIGERANT CHARGE IS REQUIRED: Open the valves very slowly using a 5 or 8mm Allen key. On MHPUE units, remove link JP6 on the pcba (identified by a white label), otherwise the fan will always run at maximum speed and the infrared handset will be inoperative.
- Page 9 a. With the system switched off, connect a high pressure gauge to the liquid line service valve. b. Switch on the system, indoor fan set to high speed, and run for a few minutes to stabilise. c. The head pressure should be approximately: R407C: 275-280 psig (18.9-19.6barg) to achieve this adjust the screw clockwise to increase pressure or anticlockwise to decrease.
- Page 10 Pressure change: 10 … 25bar: Clockwise ~ +1.5 bar, counter clockwise ~ -1.5 bar TEV LTD, ARMYTAGE ROAD, BRIGHOUSE, WEST YORKSHIRE, HD6 1QF. TEL: + 44 (0) 1484 405600 FAX: +44 (0) 1484 405620 EMAIL: sales@marstair.com WEB: www.marstair.com 10/10 55008279-16...