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TECHNICAL MANUAL

for CWC CHILLED WATER CASSETTE.

This manual provides technical and installation information for CASSETTE 962 series fan coils.

INDEX PAGE

GENERAL Part Numbers, Dimensions and Weights 2

Unit Features/Accessories 2

Optional Control Valves 3

SELECTION Hydraulic Resistance 3

Performance Data, Airflows 4 - 7

Coil Water Volumes, Optional Electric Heating 8

Sound Power and Sound Pressure Levels 8

ELECTRICAL Electrical Data, Recommended Fuse Sizes 8

UNIT CWC 9 - 11

INSTALLATION Pipework 11

Electrical Connections 11

IMI Remote Controller 12

Fascia Mounting 12 - 13

Condensate Pump/Overflow Protection 13

Fresh Air/Adjacent Room Supply 13

WIRING CWC Units 14

DIAGRAM

OPERATION CWC 15

User Maintenance 16

IMI Air Conditioning Ltd.

Armytage Road, Brighouse,

West Yorkshire. HD6 1QF

Tel: (01484) 405600

Fax: (01484) 721949 A subsidiary company of IMI plc

96208019-02

Heronhill - for all your Airking requirements

Tel: 01823 665660

www.heronhill.co.uk

Fax: 01823 665807

Summary of content (16 pages)

PAGE 1
Heronhill - for all your Airking requirements TECHNICAL MANUAL for CWC CHILLED WATER CASSETTE. This manual provides technical and installation information for CASSETTE 962 series fan coils.
PAGE 2
Heronhill - for all your Airking requirements IMI AIR CONDITIONING LIMITED-CASSETTE CEILING MOUNTED CHILLED WATER UNITS PART NUMBERS CASSETTE CWC UNITS Models 8 9 13 19 Part Number (without condensate pump) 96200001 96200002 96200004 96200005 Part Number (with condensate pump) 96200051 96200052 96200054 96200055 UNPACKED DIMENSIONS AND WEIGHTS CWC UNITS Model CWC 8 9 13 19 HEIGHT mm 338 338 338 338 WIDTH mm 647 747 947 1247 DEPTH mm 647 647 647 647 WEIGHT kg 24 31 39 4
PAGE 3
Heronhill - for all your Airking requirements OPTIONAL CONTROL VALVES The choice of either 2 or 3 way valves are available, these are factory fitted and sited within the valve tray to give the following water flow arrangements. HYDRAULIC RESISTANCE Tel: 01823 665660 -3- www.heronhill.co.
PAGE 4
Heronhill - for all your Airking requirements CWC 8 COOLING DUTIES Room Air On db /C wb /C 27 19 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 CW Temperature IN /C OUT /C 6 11 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13
PAGE 5
Heronhill - for all your Airking requirements CWC 9 COOLING DUTIES Room Air On db /C wb /C 27 19 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 CW Temperature IN /C OUT /C 6 11 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13
PAGE 6
Heronhill - for all your Airking requirements CWC 13 COOLING DUTIES Room Air On db /C wb /C 27 19 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 CW Temperature IN /C OUT /C 6 11 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 1
PAGE 7
Heronhill - for all your Airking requirements CWC 19 COOLING DUTIES Room Air On db /C wb /C 27 19 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 21 15 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 24 17 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 27 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 29 19 CW Temperature IN /C OUT /C 6 11 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 13 9 15 9 17 5 9 5 11 5 13 7 11 7 13 7 15 9 1
PAGE 8
Heronhill - for all your Airking requirements WATER VOLUME IN COILS (litres) 8 9 13 19 COOLING COIL 1.0 1.2 1.6 2.1 HEATING 0.4 0.5 0.6 0.8 OPTIONAL ELECTRIC HEATING at 230V 50Hz at 240V 50Hz CWC (kW) (kW) 8 1.4 1.5 9 1.8 2.0 13 2.3 2.5 19 3.4 3.75 SOUND POWER and SOUND PRESSURE LEVELS 962 SERIES CWC SOUND POWER LEVELS SOUND PRESSURE LEVELS Frequency Hz MODEL SPEED Min 49.1 51.4 8 Med 50.6 52.7 Max 54.3 57.2 Min 50.2 52.0 Med 52.6 Max 56.
PAGE 9
Heronhill - for all your Airking requirements 962 SERIES CWC CASSETTE INSTALLATION The 962 SERIES CWC CASSETTE is designed to operate within a suspended false ceiling. The installer supplies: Remote thermostat (available separately, part number 96000320) 4 lengths of screwed rod (M8, M10 or 3/8" OD) with 12 nuts, to suspend the chassis. Method of securing screwed rod to solid ceiling e.g. Rawl bolt shields. All mains wiring, with suitable isolation.
PAGE 10
Heronhill - for all your Airking requirements 1 2 Determine the position for the unit; the air inlet must be at least 400mm from the nearest wall. Also ensure that the position does not interfere with light fittings, sprinkler heads, etc.. Identify the type of ceiling and ensure that the mounting surface will support the operating weight of the cassette: MODEL OPERATING WEIGHT (kg) 3 8 9 13 19 25.5 32.5 41.0 51.
PAGE 11
Heronhill - for all your Airking requirements On plasterboard suspended ceilings, remove sufficient of the ceiling to give clearance for the unit to be fitted, and for access to pipework and electrics at the right hand side (motor end); a trap door should be left for service access to electrics and pipework. On reinforced concrete ceilings use Rawl bolt shields or equivalent. On wooden ceilings use battens for a mounting frame.
PAGE 12
Heronhill - for all your Airking requirements INSTALLATION of the IMI REMOTE CONTROLLER, (if used). The thermostat should be wired with 7 cores of double insulated 230V cable, 0.5 square millimetres minimum, (available from IMI in 100m drums; part number 00526116S), preferably in plastic conduit for good appearance.
PAGE 13
Heronhill - for all your Airking requirements Rear Panel Assembly The vane on this panel is fixed in position and is not adjustable. 1 Fit the filter to the rear panel assembly by dropping the pins at each end of the filter into the slots provided in the rear panel locating brackets. Ensure that the angled legs of the filter are uppermost. The filter should fit below the tabs in the rear panel locating brackets.
PAGE 14
Heronhill - for all your Airking requirements CWC WIRING DIAGRAM Tel: 01823 665660 -14- www.heronhill.co.
PAGE 15
Heronhill - for all your Airking requirements CWC CHILLED WATER CASSETTE OPERATING INSTRUCTIONS REMOTE CONTROLLER Controls to operate the fan speeds and thermostat are on the front face of the controller. ON/OFF AND FAN SPEEDS The switches on the left hand side control the ON/OFF and fan speed operations. The lower left hand switch is the ON/OFF control. The green neon is lit when the switch is 'ON'.
PAGE 16
Heronhill - for all your Airking requirements User Maintenance WARNING: The deflector vane on the rear, (air on), panel is fixed in position and does not move. DO NOT ATTEMPT TO ADJUST ITS POSITION Isolate at the mains before commencing any maintenance work. In order to maintain maximum efficiency it is important that the filter behind the return grille is cleaned regularly; this will normally be every two to three weeks.