Carrier 4 2 gw Installation Manual

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Carrier 4 2 gw Installation Manual Manual pdf 35 page image

3342 GWEnglishInstallationIIMPORTANT:Do not lift the unit by the condensate drain discharge pipe; hold itby its four corners only.Unit installation will be facilitated using a stacker (See fig. 16).If plaster board ceiling panels are installed the maximum dimensionsof the unit housing must not exceed 660 x 660 mm (mod. 200-300-400)and 900 x 900 mm (mod. 500-600-700).In rooms with high humidity, brackets should be insulated by selfadhesive insulation supplied.InstallationMark the position of the hangers, connection lines and condensatedrain pipe, power supply cables and remote control cable (seedimensions); the cardboard template (supplied with the kit) may be ofassistance for this operation.Depending on the type of ceiling the hangers can be fixed as shown inthe drawing 17.Once the threaded hangers have been positioned, do not tighten thenuts, and insert the washers as shown in the drawing 18.First position the connection lines , as described in the chapter "Waterconnections". Remove the "T" bar in order to facilitate installationoperations (See fig. 19).Carefully lift the unit (without the frame) using the four suspensionbrackets (or the four corners), inserting it into the false ceiling.If the "T" bar cannot be removed the unit may need to be tilted (thisoperation may only be carried out with false ceilings with a minimumheight of 300 mm) (See fig. 20).Align and level the unit by adjusting the nuts and locknuts on thethreaded hangers, maintaining a distance of 25 -30 mm between thesheet metal body and the underside of the false ceiling.Reposition the "T" bar and align the unit in relation to the bar bytightening the nuts and locknuts. After the condensate drain pipe andthe water ducts have been connected check, check to make sure thatthe unit is level (See fig. 21).Condensate drain pipeSee fig. 22 - 23.• To ensure correct condensate water flow, the drain pipe should havea gradient of 2% without obstructions. Furthermore an odour trap ofat least 50 mm depth should be made to prevent unpleasant odoursfrom reaching the room.• Condensate may be discharged at a maximum height of 200 mmabove the unit, as long as the ascending tube is vertical and alignedwith the drainage flange.• If it is necessary to discharge the condensate from a level above 200mm, install an auxiliary water discharge pump and float valve. A floatvalve is recommended to stop the flow switch if there is a fault at theauxiliary pump.• The condensate pipe must be insulated with a condensation-proofmaterial such as polyurethane, propylene or neoprene of 5 to 10 mmthickness.• If more than one unit is installed in the room, the drain system can bemade as shown in the drawing fig.23.Water connectionsCheckingOn the unit startup, check if water flows correctly from the pump orcheck the pipe slope and make sure the pipes are not obstructed.To make water connections to the heat exchanger or the valvesuse threaded joints and suitable materials that can ensure perfecttightness.The unit is provided with inlet and outlet female connections forboth 2 and 4 pipe models. An air bleed valve is also provided (See fig.26), which can be adjusted using a 8 mm wrench..To drain the unit completely, refer to “SYSTEM DRAINAGE” inthe Maintenance section.Models Connectionsdimension (Ø) Models Connectionsdimension (Ø)200 3/4" 500 1"300 3/4" 600 1"400 3/4" 700 1"200* 1/2" 700 * 3/4"300* 1/2" *Hot water circuits, four-pipeversion400* 1/2"Electrical connectionsIMPORTANT:• The unit must be installed in compliance with the national standardson plant installation.• All cables for connection to the unit, as well as its accessories, must beH05 VV-F with PCV insulation in compliance with EN 6033-2-40.• Disconnect all circuits from power supply before acting on energizedcomponents.• Make earthing before any other electric connections.In compliance with the installation instructions, the contact opening ofall disconnecting devices (4 mm) must allow full disconnection underthe conditions of overvoltage class IIIConnect power supply L (line), N (neutral) and (earthing) accordingto the wiring diagram and respect the polarities shown on the bottomof the electrical boxes, see fig. 36-38-39-40.All units are equipped with a fuse for machine protection and one forcontrol protection (type gF 1A).Refer to table I when replacing the fuse for unit protection.Control box panels: The control box panel is positioned on the externalside of the unit (fig. 1-2). Remove the fixing screws and the cover of thecontrol box panel. The control box panels contain the terminal blocksfor connections as shown in the wiring diagrams and fig. 36-38-39-40.