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TECHNICAL MANUAL

for CWR CHILLED WATER

CEILING MOUNTED/RECESSED SYSTEMS.

This manual provides technical and installation information for

CWR

968 series

CHILLED WATER CEILING

MOUNTED/RECESSED

indoor units.

INDEX

PAGE

GENERAL

Part numbers, dimensions and weights

Unit features/accessories

SELECTION

Control valves, airflows, discharge velocities

Chilled water duties

LPHW duties,

Hydraulic resistance

Optional electric heating

Sound pressure levels

Coil water volumes

UNIT

CWR mounting

INSTALLATION

Pipework and electrical connections

CWR remote controller

Condensate removal, air deflection

WIRING

CWR units

DIAGRAMS

OPERATION

CWR

KITS

Remote sensor kit

Condensate pump kit

Electric heater kit

3 port diverting valve

Pipe thermostat

MAINTENANCE

CWR units

COMPONENT

Exploded view of unit with

IDENTIFICATION

component Identification

IMI Air Conditioning Ltd.

Armytage Road, Brighouse,

West Yorkshire. HD6 1QF

Tel: (01484) 405600

Fax: (01484) 721949

A subsidiary company of IMI plc

email: [email protected]

96808003-03

Heronhill - for all your Airking requirements

Tel: 01823 665660

www.heronhill.co.uk

Fax: 01823 665807

Содержание CWR 25

Страница 1: ...T CWR mounting 8 INSTALLATION Pipework and electrical connections 9 CWR remote controller 12 Condensate removal air deflection 11 WIRING CWR units 13 DIAGRAMS OPERATION CWR 14 KITS Remote sensor kit 1...

Страница 2: ...0 WEIGHT kg 26 36 47 55 FEATURES ACCESSORIES FEATURE CWR Manual air deflection STD Return air sensor incl electronic thermostat Electric heating 3 fan speeds STD Remote hard wired control STD Pendant...

Страница 3: ...ulating valve but no pipe thermostat is needed AIRFLOWS CWR Minimum Speed Medium Speed Maximum Speed CFM m3 h m3 s CFM m3 h m3 s CFM m3 h m3 s 25 125 205 0 06 160 270 0 08 200 340 0 09 45 255 430 0 12...

Страница 4: ...ible 0 34 0 40 0 45 0 49 0 58 0 65 0 64 0 75 0 86 0 74 0 87 0 99 CWR 45 Air Entering Dry Bulb Wet Bulb 21 C 15 C 24 C 17 C 27 C 19 C 29 C 19 C Air Flow m3 h 430 490 710 430 490 710 430 490 710 430 490...

Страница 5: ...1 20 1 30 1 40 1 70 1 60 1 80 2 3 1 90 2 10 3 10 CWR 85 Air Entering Dry Bulb Wet Bulb 21 C 15 C 24 C 17 C 27 C 19 C 29 C 19 C Air Flow m3 h 750 1215 1440 750 1215 1440 750 1215 1440 750 1215 1440 Wa...

Страница 6: ...1 7 2 0 65 50 kW 2 0 2 2 2 7 1 7 1 9 2 4 1 5 1 6 2 0 1 2 1 3 1 7 CWR 65 Air Entering Dry Bulb 10 C 15 C 20 C 25 C Fan Speed Min Med Max Min Med Max Min Med Max Min Med Max Air Flow m3 h 595 700 1120 5...

Страница 7: ...51 54 55 52 49 41 31 Max 42 37 48 58 60 59 60 56 51 42 65 Min 31 25 40 47 51 53 46 41 32 29 Med 37 30 43 54 56 57 53 50 42 34 Max 46 42 53 62 65 63 64 61 56 49 85 Min 33 27 42 53 53 54 48 44 33 28 Med...

Страница 8: ...h the end user 1 Remove and discard the wooden supports Not CWR 25 2 Remove the cable clamps and place in a safe location until required 3 Lift the CWR unit from the box complete with the end caps thi...

Страница 9: ...R units allow a choice of two pipes exits for greater flexibility of installation 1 Determine the position for the unit allowing at least 450mm clearance below the air inlet Also ensure that the posit...

Страница 10: ...ould be supported by four M8 bolts or screwed rods and 12 nuts M8 OD on a suspended ceiling supplied by the installer On plasterboard suspended ceilings remove sufficient of the ceiling to give cleara...

Страница 11: ...SES A MODEL CWR 25 CWR 45 CWR 65 CWR 85 Without Electric 5 5 5 5 With Electric Heaters 5 10 16 16 CONDENSATE REMOVAL Condensate is collected in a drain tray incorporated within the fascia panel An out...

Страница 12: ...ed Wire between the remote controller and the unit using multi core cable as shown in the wiring diagram page 34 SETTING INSTRUCTIONS The cooling differential cool in to cool out is fixed at 1 8 C 0 5...

Страница 13: ...Frost protection enabled 5 Switching differential 1K in heating mode 0 5K in cooling mode 4K in heating mode 2K in cooling mode 6 Dead zone in normal operation 2K 5K factory settings o o O O O o o CW...

Страница 14: ...ating is possible if the system includes a heat pump outdoor unit or electric heaters have been fitted o o O O O o o OBSOLETE ELECTRONIC REMOTE CONTROLLER 53900428 This may have been used in place of...

Страница 15: ...e electrics box through one of the cable glands used for the interconnecting cable and route the lead to the remote controller position NOTE The cable may be extended up to a maximum of 50 metres Ensu...

Страница 16: ...NOT SET THE LOWER SET POINT BELOW 15 C On cool only units turn the potentiometer P3 fully anti clockwise dead zone 0 5K TYPICAL SETTINGS o o O O O o o REMOTE SENSOR KIT 97200212 FOR RCC 30 REMOTE CON...

Страница 17: ...n load The timer will accommodate 0 75mm2 to 2 5mm2 wires Three core cable is required between the timer and the air conditioning unit The timer motor must be connected to an uninterrupted supply sour...

Страница 18: ...lowing instructions diagrams refer to bench fitting ISOLATE THE SYSTEM ELECTRICALLY PRIOR TO INSTALLATION OF THIS KIT 1 Remove both side panels 2 screws each side behind the plastic caps WARNING IF TH...

Страница 19: ...ign the holes in the transition bracket with those in the coil hanger bracket and secure together using the No 8 screws Refit the sensor to the bracket Fig 7 12 Push the hose from the pump onto the se...

Страница 20: ...er to the unit installation instructions Allow approximately one minute for the controls and sensor to stabilize b Slowly add water to the condensate tray until the pump runs Initially the pump will b...

Страница 21: ...CATION NOTES 1 The pump will work against a 5m head Flow rate is highest with minimum head 2 Long lengths of drain pipe should not be exposed to the outdoor ambient otherwise freezing of condensate ma...

Страница 22: ...WILL DROP IMMEDIATELY UPON RELEASING THE SCREWS 2 Open the grille by pulling the handles at the top edge of the grille Fig 1 the grille is spring loaded and some resistance will be felt 3 Lift the fi...

Страница 23: ...inal end of the relay Locate the tab at the other end of the relay into the slot behind the 7 way terminal and secure the relay with the screw Fig 5 Fig 5 13 Refer to the wiring diagram below and the...

Страница 24: ...xpose the coil headers 2 Cut the cap off the appropriate outlet header stub leaving a length of 45mm see Fig 1 Similarly cut off the 90 elbow connecting the inlet pipe to the inlet header stub again l...

Страница 25: ...unit or room thermostat Connect pipe thermostat terminal 1 to the live on the valve and the neutral valve terminal to mains neutral 3 Electromechanical 7204 thermostat only not RCC 30 connect the sup...

Страница 26: ...ment 6 Relay only when electric heater is fitted 19 Chilled water coil 7 Filter 20 LPHW coil 8 Condensate drain connector 21 Condensate drain connector 9 Return air grille 22 End bearing housing 10 Ri...

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