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Low ESP Fan Coil Indoor Unit

19

 

5 Wiring Work 

Warning! 

Before obtaining access to terminals, all supply circuits must be disconnected. 

Notes: 

Units must be earthed securely, or it may cause electric shock.

Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring

could cause malfunction or even damage the unit. 

The unit should be powered by independent circuit and specific socket.

The wiring should be in accordance with related regulations in order to ensure the units

reliable running. 

Install circuit breaker for branch circuit according to related regulations and electrical

standards. 

Keep cable away from refrigerant pipings, compressor and fan motor.

The communication wires should be separated from power cord and connection wire

between indoor unit and outdoor unit. 

Adjust the static pressure via wired controller according to site circumstance.

5.1 Connection of Wire and Patch Board Terminal 

(1) The connection of wire (as shown in fig 5.1.1)

1)

Strip about 25mm insulation of the wire end by stripping and cutting tool.

2)

Remove the wiring screws on the terminal board.

3)

Shape the tail of wire into ring by needle nose plier, and keep the    gauge of ring in

accordance with screw.

4)

Use the screwdriver for tightening the terminal.

(2) The connection of stranded wire (as shown in fig 5.1.2)

1)

Strip about 10mm insulation of the end of stranded wire by stripping and cutting tool.

2)

Loosen the wiring screws on terminal board.

3)

Insert the wire into the ring tongue terminal and tighten by crimping tool.

4)

Use the screwdriver for tightening the terminal.

Fig 5.1.1 

Fig 5.1.2 

Содержание VRF VELD007N432U

Страница 1: ...ler OA Outside Air Evaporator Types Thank you for selecting LENNOX air conditioners Please read this manual carefully before operation and keep it for further reference K 230 60 3 and 220 50 3 N 380V...

Страница 2: ...ensuring reliability of complete unit maintaining normal communication and preheating refrigerant When the unit won t be used for a long time cut off the power of the complete unit However please pre...

Страница 3: ...n and Drainage System Testing 12 4 4 Installation of Air Duct 15 4 5 Installation of Wired Controller 18 5 Wiring Work 19 5 1 Connection of Wire and Patch Board Terminal 19 5 2 Power Cord Cnnection 20...

Страница 4: ...r supply carefully This air conditioner must be properly grounded through the receptacle to avoid electric shock The grounding wire shouldn t be connected with gas pipe water pipe lightning arrester o...

Страница 5: ...en Never start or stop the air conditioner by inserting or removing the power cord Do not turn off the air conditioner until it runs for at least 5 minutes Otherwise oil return of the compressor will...

Страница 6: ...oor temp and outdoor temp within 5 C If abnormal condition occurs e g unpleasant smell please turn off the unit at once and disconnect power supply Then contact LENNOX service center If the air condit...

Страница 7: ...27 19 35 24 Rated Heating 20 15 7 6 Indoor Unit Working Temperature Range 16 C 32 C 2 3 Unit Functions Unit Functions Wired Controller VEWCL1B Standard Operation Mode Cooling Heating Fan Dehumidifyin...

Страница 8: ...oor unit 2 M4X25 Screw Cross recessed small pan head screw 3 To fix the wired controller 3 Drain Hose Assembly 1 To connect with the hard PVC drain pipe 4 Special Nut 1 To be used for connecting the r...

Страница 9: ...electrical appliances may have image interference and noise Even if the distance is 1m when there is strong electric wave noise may still occur Fig 3 2 Notes Installation of the unit must be in accord...

Страница 10: ...in places with intense magnetic field or strong interference it is necessary to use shielded wire 3 3 2 Select communication line for indoor unit and outdoor unit Fig 3 3 2 Wire Type Total Length of...

Страница 11: ...selection requirements Power cord size is based on BV single core wire 2 4pc at 40 Cambient temperature when laying across plastic pipe Air switch is D type and used at 40 C If actual installation co...

Страница 12: ...e electric box and below unit s lower level 1 Below are the outline dimension applicable to indoor units of VELD007N432U VELD021N432U Fig 4 4 1 Below are dimensions of A B C etc for different models U...

Страница 13: ...0 695 1379 565 1340 655 260 207 1153 220 1188 716 1 Drill bolt holes and install bolts 1 Stick the reference cardboard on the installation position drill 4 holes according to the hole site on the card...

Страница 14: ...The washer fixing plate will prevent the washer from falling 3 The usage of paper pattern Refer to paper pattern of installation for ceiling opening dimension The center of ceiling opening is indicat...

Страница 15: ...should be short and the gradient downwards should be at least 1 2 in order to drain condensation water smoothly 2 The diameter of drainage hose should be bigger or equal to the diameter of drainage pi...

Страница 16: ...e distance between screw nut and hose smaller than 4mm metal clamp accessory drain hose accessory Fig 4 3 2 Fig 4 3 3 3 Use sealing plate to make the pipe clamp and hose insulated as shown in Fig 4 3...

Страница 17: ...direction should be at least 1 2 If the raising pipe is vertical with the unit the raising height should be less than 800mm Fig 4 3 9 10 Drain pipes should have a downward slope of at least 1 2 in ord...

Страница 18: ...revent air leakage The design and construction of air duct should comply with national requirements The edge of air return duct is suggested to be more than 150mm away from the wall Add a filter to th...

Страница 19: ...utlet and Air return Opening 1 Range of Capacity 7000 21000 Fig 4 4 3 Air Outlet Fig 4 4 4 Air return Opening Model Size of Air Outlet Size of Air return Opening A B C D 121 528 580 161 121 728 780 16...

Страница 20: ...end of the return air duct to the return air outlet of the unit by rivets and the other to the return air louver For the sake of the convenience to freely adjust the height a cutting of canvas duct wi...

Страница 21: ...air duct is not be used 2 Install the round flange so that the fresh air duct can be connected as Fig 4 4 10 3 Sealing and heat preservation should be done for both the air pipe and round flange pipe...

Страница 22: ...ion wires should be separated from power cord and connection wire between indoor unit and outdoor unit Adjust the static pressure via wired controller according to site circumstance 5 1 Connection of...

Страница 23: ...5 3 Connection of Communication Wire between Indoor Unit and Outdoor Unit or indoor unit 1 Detach the electric box lid 2 Let the Communication cable pass through the wiring through holes 3 Connect th...

Страница 24: ...roller 3 Wired controller and receiving light board can be installed at the same time When operating through a remote controller both wired controller and the receiving light board can receive the sig...

Страница 25: ...it used in the environment with much dust please clean it regularly usually once every two weeks 6 2 Maintenance before the Seasonal Use 1 Check if the air inlet and air outlet of indoor and outdoor u...

Страница 26: ...tage is too low Defect of main PC board The unit stops after running for a while The inlet or outlet of ODU or IDU are blocked by obstacle Poor cooling effect The filter is dirty Too heavy heat load o...

Страница 27: ...Low ESP Fan Coil Indoor Unit 24...

Страница 28: ...ct us at 1 305 718 2901 lennoxglobalhvac lennoxintl com 2018 Lennox Industries Inc For a complete list of the registered and common law trademarks owned by Lennox Industries Inc please visit www lenno...

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