Ductable water unitFWD 08 - 12 - 20 - 30 - 45

InstallationOperationMaintenance

FWD-SVX01D-E4

2 FWD-SVX01D-E4

General Information

Reception

When the unit arrives on site, check ithas not been damaged in any wayduring transport. If damage isobserved, or even merely suspected,notify the carrier within 24 hours byregistered letter. Notify the local TraneSales office at the same time.The unit should be totally inspectedwithin 3 days of delivery. If damage isobserved, notify the last carrier byregistered letter and notify the localsales office.

Warnings and cautions

Warnings and Cautions appear atappropriate places in this instructionmanual. Your personal safety and theproper operation of this machinerequire that you follow themcarefully. Trane assumes no liabilityfor installations or servicingperformed by unqualified personnel.

WARNING! : Indicates a potentiallyhazardous situation which, if notavoided, could result in death orserious injury.CAUTION! : Indicates a potentiallyhazardous situation which, if notavoided, may result in minor ormoderate injury. It may also be usedto alert against unsafe practices orfor equipment or property-damage-only accidents.

Foreword

These installation, operation andmaintenance instructions are givenas a guide to good practice in theinstallation, putting into service,operation and periodic maintenanceby the user of FWD units.They do not contain full serviceprocedures necessary for thecontinued successful operation of thisequipment. The services of a qualifiedservice technician should beemployed through the medium of amaintenance contract with areputable service company.

Warranty

Warranty is based on the generalterms and conditions of theconstructor. The warranty is void if theequipment is modified or repairedwithout the written approval of theconstructor, if the operating limits areexceeded, or if the control system orthe electrical wiring is modified.Damage due to misuse, lack ofmaintenance, or failure to complywith the manufacturer's instructions,is not covered by the warrantyobligation.If the user does not conform to therules of chapter "Maintenance", itmay entail cancellation of warrantyand liabilities by the constructor.

© 2013 Trane

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General Information

Safety recommendationsTo avoid accidents and damage, thefollowing recommendations shouldbe observed during maintenanceand service visits:1. The maximum allowablepressures for system leak testingon low and high pressure side aregiven in the chapter “Installation”.Always provide a pressureregulator.

2. Disconnect the main supplybefore any servicing on the unit.

3. Service work on the refrigerationsystem and the electrical systemshould be carried out only byqualified and experiencedpersonnel.

Maintenance contractIt is strongly recommended that yousign a maintenance contract withyour local Service Agency. Thiscontract provides regularmaintenance of your installation by aspecialist in our equipment. Regularmaintenance ensures that anymalfunction is detected andcorrected in good time andminimizes the possibility that seriousdamage will occur. Finally, regularmaintenance ensures the maximumoperating life of your equipment. Wewould remind you that failure torespect these installation andmaintenance instructions may resultin immediate cancellation of thewarranty.

TrainingThe equipment described in thismanual is the result of many years ofresearch and continuousdevelopment. To assist you inobtaining the best use of it andmaintaining it in perfect operatingcondition over a long period of time,the manufacturer has at yourdisposal a refrigeration and airconditioning service school. Theprincipal aim of this is to giveoperators and technicians a betterknowledge of the equipment theyare using, or that is under theircharge. Emphasis is particularlygiven to the importance of periodicchecks on the unit operatingparameters as well as on preventivemaintenance, which reduces the costof owning the unit by avoidingserious and costly breakdown.

Contents

General Information 2Foreword 2

Warranty 2

Reception 2

Warnings and cautions 2

Safety recommendations 3

Maintenance contract 3

Training 3

Installation 5Introduction 5

Technical data 6

Ceiling installation 7

Installation on the ground 7

Condensate drainage 8

Electrical connections 8

Main power supply 9

Duct connections 10

Diagrams 9

Operation / Maintenance 16Choice of fan speed 16

Initial checks 16

Maintenance recommendations 16

Maintenance 17Removal of the fan motor 17

Troubleshooting 18

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5FWD-SVX01D-E4

Installation

Introduction

Caution. Read this manual carefully before starting to installthe system.

Components supplied with the unit- 2 corner brackets to suspend theunit from the ceiling

Electrical connections- The electrical wiring and connections must comply withlocal electricity legislation.

- Check the electrical characteristics on the name platecorrespond to the grid’s characteristics.

Warning. Never open the electrical panel without first disconnecting the power supply.There is a risk of electrocution!

Handling the unit

Warning!Wear protection gloveswhen handling the unit. When removing the unit from its pallet,do not handle it by pipes, spigots, valves, drain pan or control panel. Take precaution to not damage the unit.

Description of the unit The FWD unit is a slim dischargecabinet unit for installation in falseceilings, lofts and ventilationspaces.It is designed for horizontalinstallation with discharge via aduct (see selection catalogue for theavailable static pressure). The unit’s structure consists ofunpainted completely insulatedgalvanised steel panels.

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��Hot water coil� Fan unit� Control / power cabinet �Water inlet and outlet screw-in connections

Figure 1 : Description

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Installation

(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow(2) Conditions: Water entering/leaving temperature: 50/45 °C,,Air inlet temperature 20°C DB - Nominal air flow(3) At high speed with nominal air flow.(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.Heat exchanger operating limits:FWD :- Water temperature: max 100° C- Absolute service pressure: min 1 bar / max 11 barsAccessories - Hot water coil:- Water temperature: min. +2° C / max. 100° C- Absolute service pressure: min 1 bar / max 11 bars

TECHNICAL DATAFWD 08 12 20 30 45Power supply (V/Ph/Hz) 230/1/50CapacitiesCooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2Fan motor (type) 2 x direct drive centrifugalFan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51Current amps(3) (A) 1,1 2,2 3,1 4,7 5,5Start-up amps (A) 3,2 5,5 9,3 14,1 16,5Rated Input Power (W) 246 516 707 1100 1815Airflowminimum (m3/h) 490 980 1400 1800 2700nominal (m3/h) 820 1650 2300 3000 4500maximum (m3/h) 980 1970 2600 3600 5400

Main coilWater entering/leaving connections (type) ISO R7 rotating female

(Dia) 3/4" 3/4" 1"1/2 1"1/2 1"1/2Hot water coil (accessory for blower only)Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5G2 filter (filter box accessory)Quantity 2 2 2 2 2Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586x421x8 586x621x8G4 filter (filter box accessory)Quantity - 2 2 2 2 2Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586x414x48 586x614x48Condensate pump (accessory) (type) CentrifugalWater flow - lift height (l/h - mm) 24 - 500Not available for FWD30 and FWD45Sound level (L/M/H speed)Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68Unit dimensionsWidth x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090Height (mm) 250 300 350 450 650Shipped unit dimensionsWidth x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333 x 1133Height (mm) 260 310 360 460 660Weight (kg) 32 46 61 76 118Colour galvanised steelRecommended fuse sizeUnit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25

7FWD-SVX01D-E4

It is possible to avoid using the 2angle brackets B supplied with theunit and mount it using just thethreaded rods D and the 2 shapedbars E. In both cases isolators can beinstalled between the nuts C and theangle brackets B or shaped bars E, toreduce transmission of vibrations tothe building’s structure.

Warning. Since the condensatetray is sloped to facilitate flow ofcondensates, the unit must bepositioned absolutely level in bothdirections.

Installation on the ground

The unit can be installed on theground, but make sure thecondensate can be drained properly.Ensure it is installed on vibrationisolators and that it is level in bothdirections.

Hydraulic connections

It is easy to remove the electriccabinet to facilitate access to thehydraulic connections. Operatinglimits of pressure must not exceed1.5MPa.

Installation procedure

- Define the layout of the lines sothat they are as short as possible.

- Limit pressure losses in the linescaused by pinching, too manybends and bending radii that aretoo small.

- Connection of water inlet and out-let lines:

The coil is connected by means of3/4” female ISO R7 connectors.

Warning. Limit the tighteningtorque applied to the connectornuts to prevent deformation of thepiping and seals (risk of leaks).

Installation

Ceiling installation

Preparation of the ceiling andinstallation of the unit A template for drilling into the ceilingto fix the threaded rods is printed onthe cover of the unit’s packaging.The angle brackets can also be usedto determine the drilling holedistances. Access must be provided on thewater connection end to facilitateinstallation, maintenance and accessto the cabinet.Four 8 mm diam. threaded rods mustbe securely fixed into the building’sslab or structure. Screw a nut A(Figure 2) sufficiently high onto eachthreaded rod. Put the angle brackets Bin place by holding them using asecond nut C. Make sure the anglebrackets are level in both directionsusing the bottom nuts C. Once theyare perfectly level insert the FWD unitand let the angle brackets support it.Use the top nuts A to tighten the unitagainst the corner brackets.

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Figure 2 : Angle brackets

Figure 3 : Recommended clearances

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Installation

Electrical connections

If access to the electric cabinet isproblematic, it can be moved amaximum distance of 500 mm.

All wiring and earthing must complywith local standards.

Cautiona) Check the electrical characteristicson the unit’s name plate. Makesure the wiring corresponds to themanufacturer’s electrical diagramand local standards.

b) Power up the units using one ormore lines protected by adisconnect switch and fuses.

c) Earth each unit.d) The wires must not touch therefrigerant lines, the motors orother moving parts.

e) The manufacturer does notassume any liability for problemscaused by modifications to theunit’s internal wiring.

f) Tighten the terminals securely.

Figure 4 : Connection of the condensate drain

Figure 5 : Moving the electric cabinet

Condensate drainage

The unit must be perfectly horizontalin both directions. Connect thecondensate tray outlet (outer diam. 20 mm). To ensure satisfactory condensatedrainage, the drainage tube must besloped 10°. There must not be acondensate trap anywhere on theline. However a siphon can beprovided to prevent outside air beingdrawn in by the indoor unit. If the pipepasses through a room, insulate it toprevent damage caused bycondensation. We recommendpolyethylene foam (6 mm thick).

Condensate pump (accessory)If it is not possible to drain thecondensates by gravity, acondensate pump can be installed asan accessory .

It can lift the condensates amaximum of 500 mm. For installationand connection of the condensatepump, refer to the submittalssupplied with this accessory.

9FWD-SVX01D-E4

Installation

Main power supply

It is the installer's responsibility toensure that units are protected by anelectrical disconnect device such as afuse or circuit breaker. Standardunits are supplied without anyprotection. The recommended fusesize is given in the Technical datatable.

All electrical connections must bemade on the terminal blocks of themain electrical control box.

WARNING ! Disconnect the powersupply before making electricalconnections. Failure to do so maycause serious injuries as well asirreversible damage to certainelectrical components.

WARNING!Use copperconductors only. Unit terminalsare not designed to accept othertypes of wiring. Aluminium orother materials could lead togalvanic corrosion or overheatingat the contact point thusdamaging the unit. Thecustomer's electrical connectionsmust comply with currentstandards.

FWD units manufactured by Tranecomply with CEI regulations.

All power supply wiring must besized and selected in accordancewith local code and regulation.

Fast-acting circuit breaker, which issensitive to very low levels of currentleakage to ground (max 30mA) mustbe installed as a general lineprotection.

Only copper conductors (Min.1.5mm2 - Max 4.0mm2) must be usedas unit terminals are not designed toaccept other types of wiring.

For electrical connections of options or accessories, refer to followingdiagrams which are supplied with corresponding option/accessory:Motorized water valve for FWD sizes 08-20: 44053756Valve (Hot water coil): 44053759Automatic change over kit: 23090607Lift pump control kit: 44053753Motor connections for FWD sizes 8-20: 23078700Motor connections for FWD sizes 30-45: 23090686Interconnections diagram: 23090605Motorized water valve for FWD sizes 30-45: 44054611

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Installation

Duct connections

FWD units can be fitted directly withrectangular discharge and intakeducts.

Warning.The pressure loss causedby the duct network andaccessories must not exceed theunit’s available static pressure (seeselection chart).

The air intake can be located at theback of the unit � or underneath it �.

DIMENSIONS OF DUCT CONNECTIONS(INTAKE AND DISCHARGE)

Sizes 08 12 20 30 45Length 748 948 1148 1148 1148Width 198 248 298 598 598

Filtering: vital to ensure the unit runssmoothly. No filters are supplied with the unit,but they can be ordered as accessories: - Filter box with EU2 filters to fix tothe unit’s intake. (behind or underneath).

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Figure 6 : Connection of ducts

11FWD-SVX01D-E4

12 FWD-SVX01D-E4

13FWD-SVX01D-E4

FWD-SVX01D-E4

Space requirement plans

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FWD-SVX01D-E4 15

FWD-SVX01D-E4

Choice of fan speed

The FWD unit is delivered from thefactory unwired. Please refer to theselection chart to select the staticpressure according to the flowrate.Once the fan rotation speed has beendetermined, wire up the fan motor tothe required speed using the suppliedelectrical diagrams.

For use of temperature control, referto the guide supplied with thethermostat.

Initial checks

- Check the electrical connectionsand water pipes are fixed securely.

- Rotate the fan blades by hand tomake sure it rotates freely.

- Check that all nuts and bolts aretightened correctly.

- Make sure the chilled water pipingand the condensate drainage tubeare properly insulated to avoidproblems with condensationwater flow.

Maintenancerecommendations (regularuse)

Failure to follow these instructionsmay cause damage to the unit.

The frequency of maintenance willdepend on the conditions of use ofthe unit and will be determined byregular inspections.

When servicing the units, make surealso that the air passage through thecoils (both internal and external) isclean, and free of dirt or debris.

a) Clean the air filter by beating it anddrawing air through it in theopposite direction to the passageof air.

b) Check the condensate tubes arenot obstructed.

c) Rotate the fan blades and makesure they are not damaged. Cleanthem if necessary and check theyare correctly aligned.

d) Motor - check the wiring, and makesure the switches operate correctly.Replace any damagedcomponents.

e) Safety disconnection and electricalcomponents - check they operatecorrectly.

f) Water circuit - check there are noleaks.

g) Tighten all the nuts and bolts.

Operation / Maintenance

16

FWD-SVX01D-E4

� Unscrew the 2 x 2 screws (08) or 2 x3 screws (12-20-30-45) fixing thefan motor while holding it up.

Take out the fan motor assembly,by pushing outwards on thebottom of the 2 side panels, takingcare not to damage the insulationmaterial.

� � Unscrew the 4 screws fixing thepanel and remove the panel.

� � Unscrew the 4 screws fixing theintake support bracket and removeit.

� Unscrew the 4 screws fixing thebase of the electrical cabinet by oneturn. N.B.. The motor cables must bedisconnected in the electricalcabinet.

� Push the cabinet upwards andmove it enough to access thescrews fixing the fan motor.

� Loosen the 4 screws fixing thecondensate tray by a few turns.

Maintenance

Figure 7 : Removal of the fan motor

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FWD-SVX01D-E4

Possible causeA)The electric cabinet is not connected.

B) The control circuit is not powered up.

A) The thermostat is not controlling theunit.

A) The electric motors are not powered up.

B)The thermal protection of the motorshas been cut.

A) The unit is not operating.

B) The thermostat settings are incorrect.

C) Insufficient air flow

D) Insufficient chilled water flow

E) Chilled water temperature too high.

F) The thermostat is not operatingcorrectly.

G) Heat load is greater than expected.

A) Clogged filters.

B) The fans are rotating the wrong way

C) The air flow is obstructed.

SolutionCheck the unit’s general disconnect switchis closed. Check the control circuit’s fuse.

Check the thermostat is plugged in (alsorefer to the thermostat’s instructionmanual).

Check the fan motors are powered up andthe fan circuit-breakers are reset.

Check the motor winding resistance afterresetting. Check the power supply voltageand the input current.

See“The unit is not operating”.

Check the set point.

See “No air flow”

Checked the chilled water flow. Check thegate valves and the water circuit.

Check the unit’s chilled water production.

Refer to the thermostat’s instructionmanual.

Check the zone’s heat load (too much freshair).

Check the extent of infiltration of outsideair.

Clean or replace the recycling filters.

Check and correct

SymptomThe unit is not powered up.

The unit does not operate

The fan motors do not operate.

Room temperature too high

Room temperature too low

No airflow

Maintenance

18

Troubleshooting

19FWD-SVX01D-E4

Notes

© 2013 Trane All rights reservedFWD-SVX01D-E4_1213Supersedes FWD-SVX01C-E4_0912

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