IMI CWR 25 Technical Manual Download Page 26

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INDOOR UNIT ASSEMBLY DRAWING AND COMPONENT IDENTIFICATION

Top box assembly

Condensate pump sensor

Side panel fixing position

Fuse cover

Fan motor

Fuse (2A)

Fascia and drip tray assembly

Heater cutout assembly

Fan motor capacitor

Heater element

Relay (only when electric heater is fitted)

Chilled water coil

Filter

LPHW coil

Condensate drain connector

Return air grille

End bearing housing

Right hand side cover

Left hand side cover

Condensate pump PCB

Impeller

Fuse (315mA)

Intermediate bearing

Condensate pump

Impeller spring

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Summary of Contents for CWR 25

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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