Page 2 - ENGLISH; Contents; Page
ENGLISH GB - 1 42 GW“Hydronic Global Cassette” Fan Coil Units Contents Page Dimensions and weights ........................................................................ 2 Technical data ........................................................................................ 3 General information ...
Page 3 - Dimensions and weights; Unit
42 GW GB - 2 Dimensions and weights 42GW 004 008 010 012 016 020 Unit 17.5 19 19 36 38 38 Frame/Grille assembly 3 3 3 5 5 5 813 595 960 298 120 225 280 Ø 150 440 88 160 825 11 2 70 125 825 120 ø150 298 237 52 100 50 160 11 0 90 155 575 158 Ø 70 720 550 515 Ø 25 Ø 25 620 Ø 100 150 575 42GW 012 - 016 ...
Page 4 - Table I: Nominal data; Table VI: Accessories; Technical data
42 GW GB - 3 E N G L I S H Table III: Technical data of electric heaters (if installed) IMPORTANT:The electric heater mustalways be factory installed(mod. 42GWE/H...).The use of other eletricheaters is absolutelyprohibited.Failure to follow thissafety requirementcauses unit damage andvoids the warra...
Page 5 - General Information; Unit installation; Choosing the installation site
42 GW GB - 4 General Information Unit installation Read this instruction manual thoroughly before startinginstallation. • 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....
Page 7 - Prior to installation; Installation
42 GW GB - 6 Installation Prior to installation It is advisable to place the unit as close as possible to the installation sitebefore removing it from the packaging. The grille panel and the controlare separately packed for maximum protection. IMPORTANT:Do not lift the unit by the condensate drain d...
Page 8 - Condensate drain pipe
GB - 7 42 GW E N G L I S H Installation Threaded hangers "T" bar(to be removed) False ceiling Spirit level Suspension brackets mm • To ensure correct condensate water flow, the drain pipe should have a gradient of 2% without obstructions. Furthermore anodour trap of at least 50 mm depth shou...
Page 9 - Installation of grille/frame assembly; Checking; Water connections
42 GW GB - 8 A B Installation Installation of grille/frame assembly Carefully unpack the assembly and check for damage sustained intransit. Attach the assembly to the unit by using the two hooks. Use the screws supplied to fix the frame in position. Frame pre-hooking support Safety belt Frame fixing...
Page 10 - Control; Motorized valve and control; Assembly
GB - 9 42 GW E N G L I S H • The unit control circuit only allows opening of the motorized valve when the fan motor is working.(See wiring diagrams) • When the thermostat asks for cooling, terminal 1 of TB3 (cold water) is supplied with 230V.When it asks for heating, terminal 2 of TB3 (hot water ore...
Page 11 - Instructions for field supplied valves; Water connection; ON-OFF valves with other voltages than 230V
42 GW GB - 10 Fan speedH = high speedM = medium speedL = low speed Heat Cool Motorized valve and control 230V valve connection or230V valve relay connection Instructions for field supplied valves Water connection • Install valves following manufacturer's instructions; refer to the relevant figures f...
Page 12 - Electrical connections; STANDARD version unit - Control panel
GB - 11 42 GW E N G L I S H 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 TB1terminal 4. • The optional electric ...
Page 13 - Wiring diagram legend; Connections; Note
42 GW GB - 12 IMPORTANT for units with electric heaters;The unit is equipped with two thermostats: one with automaticreset and one with manual (electric) reset that can bereactivated by switching the power supply off and then on. Connect the power cables to terminal box connectors inaccordance with ...
Page 14 - Electric heater; PCB; Wiring diagram, standard version unit
42 GW GB - 13 E N G L I S H Electric heater supply Valves connection:select the diagram according to thesystem type 햻 햺 햹 햸 햲 햳 햴 햵 햶 햷 햿 헀 W W R A C C C C Y-G Y- G G G C C B B Y-G Y- G R R R R 1 2 3 4 5 6 7 9 1 2 3 6 7 8 10 11 5 43 2 1 TB3 TB1 HR F1 CR PR PCB IFM PS 1 2 FS 2 1 C2_F C2_M 2 1 3 2 C1_...
Page 15 - Air intake grille; Fresh air renewal and conditioned air supply to an adjacent room
42 GW GB - 14 Air intake grille Fresh air renewal and conditioned air supply to an adjacent room • 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...
Page 16 - Fresh air renewal; Conditioned air supply to an adjacent room
GB - 15 42 GW E N G L I S H Air flow m 3 /h A vailable static pressure - Pa Fresh air renewal • The optional supplementary fan for fresh air intake (field supplied) has to be connected to terminal block as perdiagrams enclosed.Fan motor operation is parallel to the thermo-electric controlvalve, and ...
Page 17 - Maintenance and owner's guide; Maintenance; Filter cleaning; Guide for the owner
42 GW GB - 16 Maintenance and owner's guide Maintenance Cleaning and maintenance operations must be carried out byspecially trained personnel. Before performing any service or maintenance operations,turn OFF the main power switch. To open the unit grille: Turn the two screws through 90 ° (1/4 turn)....