background image

Electrical wiring

■ 

We recommend installing 
a master / repair switch 
provided by the customer  
close to the indoor unit.

■ 

The power supply is made 
at the indoor unit, a control line 
to the chiller is not necessary.

■ 

If a condensate pump, which 
is available as an accessory, 
is used in conjunction with 
the unit, the pump switch-off 
contact switches off the power 
supply or the valve if necessary.

■ 

The terminal block is located 
inside the unit. It can be 
accessed after opening  
the cover.

 
Proceed as follows to connect:

1.  Open the control box cover  

by removing the fixing screws 
and lifting off the cover.

2.  Feed the de-energised cable 

through the edge protection 
rings on the control box  
and clamp the cable  
in the strain relief.

3.  Then connect the cable  

in accordance with the 
connection diagram.

4.  Connect the electrical plugs 

on the cover to the mating 
connectors on the cassette. 
It is not possible to incorrectly 
connect these.

5.  Configure the unit according  

to its use via the switch blocks 
and the terminal connections.

6.  Install all removed parts.

All electrical installation work 
is to be performed by specialist 
companies. Disconnect the 
power supply when connecting 
the electrical terminals.

      CAUTION

Control box cover

KWD 25 EC to 100 EC

Check all plug and terminal 
connections to verify  
that they are tight and make  
a permanent contact. Tighten 
as required.

      CAUTION

KWD 25 EC to 100 EC control box

Measurement 

temperature 

Probe 

resistance value

-20

37.4 k

Ω

-15

29.0 k

Ω

-10

22.7 k

Ω

-5

17.9 k

Ω

0

14.2 k

Ω

+5

11.4 

Ω

+10

9.1 k

Ω

+15

7.4 k

Ω

+20

6.1 k

Ω

+25

5.0 k

Ω

+30

4.1 k

Ω

+35

3.4 k

Ω

+40

2.9 k

Ω

+45

2.4 k

Ω

+50

2.0 k

Ω

+55

1.7 k

Ω

+60

1.5 k

Ω

+65

1.3 k

Ω

+70

1.1 k

Ω

+75

0.9 k

Ω

REMKO KWD EC series

26

Summary of Contents for KWD 100 EC

Page 1: ...tions Edition GB 11 Read the instructions prior to performing any task KWD 25 EC KWD 35 EC KWD 45 EC KWD 55 EC KWD 70 EC KWD 85 EC KWD 100 EC REMKO KWD EC series Chilled water ceiling cassettes with E...

Page 2: ......

Page 3: ...recycling 4 Transport and packaging 4 Guarantee 5 Unit description 5 System layout 6 Operation 7 16 Shutdown 17 Care and maintenance 17 18 Troubleshooting and customer service 19 20 Installation inst...

Page 4: ...g Disposing of packaging All products are packed for transport in environmentally friendly materials Make a valuable contribution to reducing waste and sustaining raw materials Only dispose of packagi...

Page 5: ...ory with three stage fan operation Group control using the wired room temperature controller and switching relay provided by the customer or available as an accessory with three stage fan operation Si...

Page 6: ...deliver the heat from the operating medium to the room air System layout Chiller System layout Medium inlet Medium outlet Indoor area 1 Outdoor area Indoor area 2 Indoor area 3 Infrared remote control...

Page 7: ...ng used we recommend disconnecting the power supply Our recommendation does not apply to safety relevant components TIP Operation with an external 0 5 10V signal and infinitely variable fan operation...

Page 8: ...leakage It is recommended that the batteries are removed if the equipment is shut down for longer periods NOTE Display The illuminated display LEDs indicate the set fan speed LED H red high fan speed...

Page 9: ...ey to set a particularly high fan speed Keys on the remote control POWER key Press this key to start the unit TEMP key Press this key to set the desired temperature in 1 C steps within the range of 16...

Page 10: ...imilar to press recessed key R All the symbols will appear on the display After approx 5 seconds only the time will flash on the display After pressing recessed key C press and hold the TIME SET key t...

Page 11: ...rature Press the TEMP keys to set the desired room temperature in 1 C steps If the room temperature is 1 C above the desired temperature and sufficient coolant is available the indoor unit will start...

Page 12: ...ired target temperature The prerequisite for this is that sufficient heat is present in the cold water system Press the TEMP key to set the desired room temperature in 1 C steps If the room temperatur...

Page 13: ...ages Pressing the SILENT key sets the fan to a particularly low speed and the fan symbol starts to flash This stage is used to reduce the noise emis sions again for example After pressing the FAN key...

Page 14: ...y the previously set mode temperature and fan speed are activated The switch on off time can be prematurely cancelled by pressing the appropriate TIME key or POWER key TIME ON TIME SET TIME ON Switch...

Page 15: ...dard infrared remote control or via a fixed cabled remote control accessory The data that is sent is then transferred to all other slave units via the internal bus line The number of slave units is li...

Page 16: ...to assign the relevant selected addresses to the corresponding room designation The procedure for assigning addresses to units is described in the Configuration chapter The master unit must be alloca...

Page 17: ...cover 1 Disconnect the power supply to the unit 2 Open and fold down the air inlet guard on the cover 3 Clean the grill and cover with a soft damp cloth 4 Switch the power supply back on Air filter f...

Page 18: ...in air before replacing it in the unit 7 Carefully insert the filter Ensure that it locates correctly 8 Close the cover as described above but in reverse order 9 Switch the power supply back on 10 Swi...

Page 19: ...unit working correctly Observe temperature ranges of indoor unit and outdoor unit Power surge due to thunderstorm Have there been any lighting strikes in the area recently Turn the main fuse off and t...

Page 20: ...r Route the condensate drainage line with an incline and clean it Condensate cannot be discharged Are the condensate drainage lines unblocked and is there a steady incline Are the condensate pump and...

Page 21: ...electrical connections in accordance with applicable DIN and VDE standards Always attach electrical lines properly in electrical clamps otherwise a fire could result Service openings should be provide...

Page 22: ...low 6 Check again that the unit is level 7 The final task is to tighten the counter nuts and attach the cover Installation should only be performed by authorised specialists CAUTION Dimensions in mm K...

Page 23: ...system No moisture can condense in the nitrogen filler NOTE Safety valve Safety valves limit excess operating pressure due to excess warming or overfilling of the operating medium The valve outlet req...

Page 24: ...eatment Fit a collar with a nominal diameter of 100 mm to the adjoining room connection The cooling capacity of the indoor unit must be sufficient for both rooms An opening must be made between both r...

Page 25: ...the condensate drainage line of the unit freely into the drain line If the condensate runs directly into a sewer pipe fit a trap to prevent any unpleasant odours When operating the unit at outdoor te...

Page 26: ...connect the cable in accordance with the connection diagram 4 Connect the electrical plugs on the cover to the mating connectors on the cassette It is not possible to incorrectly connect these 5 Conf...

Page 27: ...motor 2 only KWD 70 100 EC Power supply 230V 50Hz External input 3 speed stages Internal Lcom network Internal Lcom network DIP3 switch block Function configuration DIP2 switch block Network configura...

Page 28: ...e configuration specified for the relevant unit is permitted to be used here as this is the only way to guarantee optimised control behaviour Network configuration DIP2 The addresses for the leading m...

Page 29: ...has been open for 2 seconds The units with EC fans allow for virtually infinitely variable speed adjustment depending on the design This setting can also be specified using an external control signal...

Page 30: ...dual slave unit Execution Address assignment for the units is carried out by changing the DIP switch settings for DIP switch block 2 Network with cabled remote controls The cabled remote control that...

Page 31: ...st be adjusted on the pipe leg regulating valves Safety valve The safety valves and their correct function must be checked The drain line for the valves is to be checked for function and leak tightnes...

Page 32: ...mode 1 Switch the power supply on 2 Open all shut off valves if necessary 3 Switch on the heating system and the corresponding circulation pump The outlet temperature must be between 35 and 70 C Unit...

Page 33: ...9 2 41 2 11 2 01 1 76 5 684 42 8 0 78 25 1 5 33 3 53 4 38 3 10 3 42 2 75 2 80 2 43 2 34 2 03 KWD 55 EC 1 229 21 4 0 33 6 0 2 19 1 23 1 80 1 08 1 45 0 95 1 20 0 80 0 97 0 67 2 606 35 9 0 68 14 8 4 74 3...

Page 34: ...3 4 86 6 13 7 36 8 64 5 684 42 8 0 78 25 1 2 49 2 99 4 16 5 37 6 50 7 80 9 15 KWD 55 EC 1 229 21 4 0 33 6 0 1 14 1 42 1 97 2 41 3 04 3 66 4 26 2 606 35 9 0 68 14 8 2 20 2 74 3 80 4 94 5 86 7 07 8 22 3...

Page 35: ...s medium cooling C 4 to 18 Operating limits medium heating C 30 to 70 Max operating pressure medium kPa 1400 Minimum supply temperature heating C 28 Nominal flow rate medium cooling 1 m h 0 45 0 55 0...

Page 36: ...m cooling C 4 to 18 Operating limits medium heating C 30 to 70 Max operating pressure medium kPa 1400 Minimum supply temperature heating C 28 Nominal flow rate medium cooling 1 m h 0 98 1 45 1 66 Nomi...

Page 37: ...996 1106997 1106690 10 Probe ambient air 1106655 1106655 1106655 1106655 11 Probe anti freeze protection 1106656 1106656 1106656 1106656 12 Fan blade 1106666 1106666 1106666 1106666 13 Fan motor 11067...

Page 38: ...e tray 1106680 1106680 1106680 8 Condensate hose 1106659 1106659 1106659 9 Finned heat exchanger 1106691 1107596 1107571 10 Probe ambient air 1106655 1106655 1106655 11 Probe anti freeze protection 11...

Page 39: ...39...

Page 40: ...es people above all they must be advisers to our customers in air conditioning and heating technology Customer service Our units operate precisely and reliably However in the event of a malfunction RE...

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