Advertisement
This manual provides technical and installation information for
MCU+180m - 200 Condensing Unit:
550 series MCU+ condensing units
INDEX
GENERAL
SELECTION
ELECTRICAL
UNIT
INSTALLATION
COMPONENT
IDENTIFICATION
1.
Marstair 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.
2.
These units are supplied pre-charged with R134A refrigerant and polyolester oil.
Do not open the valves until the system is fully installed.
Do not mix oils or refrigerants.
3.
These units contain live electrical components, moving parts and refrigerant under pressure.
Always site out of reach of children and protect from vandalism.
4.
The data plate only gives information for the outdoor unit. For system details add input power and
current of indoor and outdoor unit, including any heater load.
5.
FUSES- for recommended fuse size see indoor unit instructions.
TECHNICAL MANUAL
MCU+ 180-200
}
R134A Refrigerant
Part numbers, dimensions and weights
Unit features/accessories
Performance data, Air volume & airflows
Acoustic Data & Sound Power/Pressure Levels
Electrical data, electrical loads
Recommended fuse sizes
MCU+ Installation, Pipework/restrictors,
Electrical connections, Evacuating and charging
Head Pressure Control
GENERAL
-1 -
PAGE
2
3
3-4
4-7
8
55008386-05
Advertisement
Table of Contents
Related Manuals for Marstair MCU+ 180-200
Summary of Contents for Marstair MCU+ 180-200
- Page 1 COMPONENT IDENTIFICATION GENERAL Marstair 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 R134A refrigerant and polyolester oil.
- Page 2 550 Series CONDENSING UNITS (MCU/MCU+) MCU+ 3Ph Scroll R134A 55033054 UNPACKED DIMENSIONS AND WEIGHTS CONDENSING UNITS Model MCU+ 180 MCU+ 200 HEIGHT* mm 1275 1275 WIDTH mm 1100 1100 DEPTH mm WEIGHT 3 Ph *Includes 60mm for mounting feet. PACKED DIMENSIONS AND WEIGHTS CONDENSING UNITS Model MCU+ 180...
-
Page 3: Technical Information
AIRFLOWS OUTDOOR/DUCTED UNITS Model MAX Speed MCU+ 180 - 200 1.85 TECHNICAL INFORMATION MCU+ 180 - 200 Capacities R134A EVAPORATING TEMPERATURE AIR ON TO MODEL CONDENSER -12.5 -7.5 -2.5 C TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL TOTAL 5.51 6.21... -
Page 4: Mounting Holes
FUSES The system and its supply/interconnecting wiring must be protected by fuses, preferably High Rupture Current (HRC) motor rated types (EN60269) or miniature circuit breakers (EN60898) or local codes having similar time lag characteristics, that allow starting of the compressor yet still afford close overcurrent protection under running conditions. The ratings below are for HRC motor rated fuses. SYSTEMS WITH 3 Ph 400V 50Hz OUTDOOR UNITS (A/Ph) MCU+ INSTALLATION of 550 Series CONDENSING UNITS... - Page 5 All dimensions are in millimetres. Weight Model (kg) MCU+ 180 1100 1215 MCU+ 200 1100 1215 APPLICATION - ALL CONDENSING UNITS 1. To maximise performance, pipe runs should be kept as short as possible, avoiding sharp bends. However, individual pipe runs to a maximum of 45m, including 20m lift, are permissible provided good refrigeration practice is followed. Published performance duties are based on 7.5m pipe runs.
- Page 6 PIPE CONNECTIONS/RESTRICTORS Outdoor units are supplied with the following brazed connections (sizes in inches); MCU+ Model Size 180 - 200 Expansion Suction NOTE: Ensure that both service valves on the outdoor unit are closed (IN, fully clockwise) before commencing installation. Indoor units have a low pressure holding charge of nitrogen, which may be released into the atmosphere without damage to the environment.
-
Page 7: Adding Refrigerant
ADDING REFRIGERANT After evacuating the indoor unit and interconnecting pipework, open the valves using a 4 or 5mm Allen key. The high and low side pressures should equalise within a minute. Additional charge for all systems, including heat pumps, should be introduced with the system in the AIR CONDITIONING MODE. If a manual HP cutout is fitted, ensure that the reset button is depressed. - Page 8 NOTE: The condenser fan may stop if the operating pressure drops below 200 psig (13.8 barg) R134A: 140 – 145 psig (9.7 – 10 barg) at 32°C ambient temperature, 250 – 260 psig (17.2 – 17.9 barg) at 55°C ambient temperature to achieve this adjust the screw clockwise to increase pressure or anticlockwise to decrease. Each ½...
- Page 9 3 minute timer pcb Fan capacitor LP switch Compressor capacitor (1Ph) Mains terminal cover Compressor Electrics box 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 55008386-05...
Need help?
Do you have a question about the MCU+ 180-200 and is the answer not in the manual?
Questions and answers