Carrier 42GW Installation Manual
“hydronic global cassette” fan coil units
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Also See for 42GW:
- Instruction manual (132 pages) ,
- Installation manual (28 pages) ,
- Installation instructions manual (8 pages)
Table of Contents
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Table of Contents
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Summary of Contents for Carrier 42GW
- Page 1 42GW INSTALLATION MANUAL...
- Page 2 42 GW “Hydronic Global Cassette” Fan Coil Units Contents Dimensions and weights ... Technical data ... General information ... Avoid ... Installation ... Water connections ... Motorized valve and control ... Electrical connections ... Wiring diagram ... Fresh air renewal and conditioned air supply to adjacent room ... Maintenance ...
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Page 3: Dimensions And Weights
42 GW Dimensions and weights 42GW 004 - 008 - 010 ø150 Ø 100 42GW 012 - 016 - 020 42GW Unit Frame/Grille assembly GB - 2 Ø 25 17.5... -
Page 4: Technical Data
42 GW Technical data Table I: Nominal data POWER INPUT Models Cooling 42GWC004 42GWC004H 42GWC008 42GWC008H 42GWC010 42GWC010H 42GWC012 42GWC012H 42GWC016 42GWC016H 42GWC020 42GWC020H 42GWD004 42GWD004H 42GWD010 42GWD010H 42GWD020 42GWD020H Note: 230V ~ 50Hz. Table II: Wire section of connecting cable mm Models from 004 to 020 Table III: Technical data of electric heaters (if installed) -
Page 5: Choosing The Installation Site
42 GW General Information Unit installation Read this instruction manual thoroughly before starting installation. • This unit complies with the low-voltage (EEC/73/23) and electromagnetic compatibility (EEC/ 89/336) directives. • The installation should be carried out by a qualified installer. • Follow all current national safety code requirements. In particular ensure that a properly sized and connected ground wire is in place. - Page 6 42 GW Avoid..any obstruction of the unit air intake or supply grilles..exposure to oil vapours..installation in areas with high frequency waves..ascending sections of condensate drain piping. These may only be used near the unit with a maximum height difference of 200 mm from the top of the unit.
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Page 7: Prior To Installation
42 GW Installation • Install the unit as centrally as possible in the room, the air flow direction can be controlled by manually regulating the louvres position, according to the operating mode (cooling or heating): this will ensure optimum distribution of the air in the room. •... - Page 8 42 GW Installation First position the connection lines , as described in the chapter "Water connections". Remove the "T" bar in order to facilitate installation operations. Carefully lift the unit (without the frame) using the four suspension brackets (or the four corners), inserting it into the false ceiling.
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Page 9: Water Connections
42 GW Installation Frame pre-hooking support Safety belt Frame fixing screw Installation of grille/frame assembly Carefully unpack the assembly and check for damage sustained in transit. Attach the assembly to the unit by using the two hooks. Use the screws supplied to fix the frame in position. Water connections Water connections are fixed to the unit body to avoid damage when pipes are connected;... -
Page 10: Mounting Of Motorized Thermo-Electric Valve Assembly
• by installing the motorized thermo-electric valves supplied as accessory • by installing motorized field supplied valves. Motorized thermo-electric valve assembly and components Water inlet Mod. 42GW Ref. Description q.ty Adaptor 3/4 " gas with O-ring Adaptor 1" gas with O-ring + Adaptor 3/4"... -
Page 11: Instructions For Field Supplied Valves
42 GW Motorized valve and control Automatic operation position Thermo-electric valve head Valve body 004 - 008 - 010 Operation of the thermo-electric valve • This 3-way valve is an ON-OFF type with a very slow stroke. It is not a modulating valve so it has no PTC. This valve is driven, as a sensible element, by the ambient thermostat of the “cassette”... -
Page 12: Standard Version Unit - Control Panel
42 GW Motorized valve and control • If these connections are not made as described the drain pan condensate may overflow. • Valves should only open when the fan motor is working, i.e. when one of TB1 terminals 1 or 2 or 3 is supplied from TB1 terminal 4. -
Page 13: Electrical Connections
42 GW Electrical connections The control panel can be reached by opening the grille and removing the metal covers using the 3 or 4 screws. IMPORTANT for units with electric heaters; The unit is equipped with two thermostats: one with automatic reset and one with manual (electric) reset that can be reactivated by switching the power supply off and then on. -
Page 14: Wiring Diagram, Standard Version Unit
42 GW Wiring diagram, standard version unit 1 2 3 C1_F C2_F C1_M C2_M Valves connection: select the diagram according to the system type 230V ~ 50Hz 6 7 8 10 11 C3_F C3_M COOLING ONLY (2 PIPE SYSTEM) COOLING+HEATING (2 PIPE SYSTEM) COOLING+HEATING (4 PIPE SYSTEM) - Page 15 42 GW Fresh air renewal and conditioned air supply to an adjacent room Air intake grille • Side knockouts allow connection of fresh air inlet ducts and ducts to deliver conditioned air to an adjacent room. • Remove the external prepunched anti-condensate insulation and take away the knockout panels using a punch.
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Page 16: Fresh Air Renewal
42 GW Fresh air renewal and conditioned air supply to an adjacent room Fresh air renewal • The optional supplementary fan for fresh air intake (field supplied) has to be connected to terminal block as per diagrams enclosed. Fan motor operation is parallel to the thermo-electric control valve, and the motor stops when the valve shuts off. -
Page 17: Filter Cleaning
Guide for the owner When installation and tests are completed instruct the Owner on the main operating modes of the air conditioner, such as: Acrylic fibre • Turning the unit ON and OFF. • Changing the operation modes. - Page 18 L010122H22 - 0405 Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. 039/3636.1 The manufacturer reserves the right to change any product specifications without notice. Order No. 14207-74M10, April 2005. Supersedes Order No. 14207-74M10, December 2004. Printed in Italy...
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