Trane FWD 08 Owner's manual

Ductable water unit
FWD 08 - 12 - 20 - 30 - 45
Installation
Operation
Maintenance
FWD-SVX01D-E4

2FWD-SVX01D-E4
General Information
eception
When the unit arrives on site, check it
has not been damaged in any way
during transport. If damage is
observed, or even merely suspected,
notify the carrier within 24 hours by
registered letter. Notify the local Trane
Sales office at the same time.
The unit should be totally inspected
within 3 days of delivery. If damage is
observed, notify the last carrier by
registered letter and notify the local
sales office.
Warnings and cautions
Warnings and Cautions appear at
appropriate places in this instruction
manual. Your personal safety and the
proper operation of this machine
require that you follow them
carefully. Trane assumes no liability
for installations or servicing
performed by unqualified personnel.
WA NING! : Indicates a potentially
hazardous situation which, if not
avoided, could result in death or
serious injury.
CAUTION! : Indicates a potentially
hazardous situation which, if not
avoided, may result in minor or
moderate injury. It may also be used
to alert against unsafe practices or
for equipment or property-damage-
only accidents.
Foreword
These installation, operation and
maintenance instructions are given
as a guide to good practice in the
installation, putting into service,
operation and periodic maintenance
by the user of FWD units.
They do not contain full service
procedures necessary for the
continued successful operation of this
equipment. The services of a qualified
service technician should be
employed through the medium of a
maintenance contract with a
reputable service company.
Warranty
Warranty is based on the general
terms and conditions of the
constructor. The warranty is void if the
equipment is modified or repaired
without the written approval of the
constructor, if the operating limits are
exceeded, or if the control system or
the electrical wiring is modified.
Damage due to misuse, lack of
maintenance, or failure to comply
with the manufacturer's instructions,
is not covered by the warranty
obligation.
If the user does not conform to the
rules of chapter " aintenance", it
may entail cancellation of warranty
and liabilities by the constructor.
© 2013 Trane

3
FWD-SVX01D-E4
General Information
Safety recommendations
To avoid accidents and damage, the
following recommendations should
be observed during maintenance
and service visits:
1. The maximum allowable
pressures for system leak testing
on low and high pressure side are
given in the chapter “Installation”.
Always provide a pressure
regulator.
2. Disconnect the main supply
before any servicing on the unit.
3. Service work on the refrigeration
system and the electrical system
should be carried out only by
qualified and experienced
personnel.
Maintenance contract
It is strongly recommended that you
sign a maintenance contract with
your local Service Agency. This
contract provides regular
maintenance of your installation by a
specialist in our equipment. Regular
maintenance ensures that any
malfunction is detected and
corrected in good time and
minimizes the possibility that serious
damage will occur. Finally, regular
maintenance ensures the maximum
operating life of your equipment. We
would remind you that failure to
respect these installation and
maintenance instructions may result
in immediate cancellation of the
warranty.
Training
The equipment described in this
manual is the result of many years of
research and continuous
development. To assist you in
obtaining the best use of it and
maintaining it in perfect operating
condition over a long period of time,
the manufacturer has at your
disposal a refrigeration and air
conditioning service school. The
principal aim of this is to give
operators and technicians a better
knowledge of the equipment they
are using, or that is under their
charge. Emphasis is particularly
given to the importance of periodic
checks on the unit operating
parameters as well as on preventive
maintenance, which reduces the cost
of owning the unit by avoiding
serious and costly breakdown.

Contents
General Information 2
Foreword 2
Warranty 2
Reception 2
Warnings and cautions 2
Safety recommendations 3
aintenance contract 3
Training 3
Installation 5
Introduction 5
Technical data 6
Ceiling installation 7
Installation on the ground 7
Condensate drainage 8
Electrical connections 8
ain power supply 9
Duct connections 10
Diagrams 9
Operation / Maintenance 16
Choice of fan speed 16
Initial checks 16
aintenance recommendations 16
Maintenance 17
Removal of the fan motor 17
Troubleshooting 18
4FWD-SVX01D-E4

5
FWD-SVX01D-E4
Installation
Introduction
Caution. Read this manual
carefully before starting to install
the system.
Components supplied with the unit
- 2 corner brackets to suspend the
unit from the ceiling
Electrical connections
- The electrical wiring and
connections must comply with
local electricity legislation.
- Check the electrical
characteristics on the name plate
correspond 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 gloves
when 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 discharge
cabinet unit for installation in false
ceilings, lofts and ventilation
spaces.
It is designed for horizontal
installation with discharge via a
duct (see selection catalogue for the
available static pressure).
The unit’s structure consists of
unpainted completely insulated
galvanised steel panels.
➀
➁
➂
➃
➀Hot water coil
➁Fan unit
➂Control / power cabinet
➃Water inlet and outlet screw-in connections
Figure 1 : Description

6FWD-SVX01D-E4
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 bars
Accessories - Hot water coil:
- Water temperature: min. +2° C / max. 100° C
- Absolute service pressure: min 1 bar / max 11 bars
TECHNICAL DATA
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps(3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Rated Input Power (W) 246 516 707 1100 1815
Airflow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1"1/2 1"1/2 1"1/2
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 22222
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586x421x8 586x621x8
G4 filter (filter box accessory)
Quantity -2 2222
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586x414x48 586x614x48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333 x 1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
ecommended fuse size
Unit alone (a /gI) (A) 8/16 8/16 8/16 8/25 8/25

7
FWD-SVX01D-E4
It is possible to avoid using the 2
angle brackets B supplied with the
unit and mount it using just the
threaded rods D and the 2 shaped
bars E. In both cases isolators can be
installed between the nuts C and the
angle brackets B or shaped bars E, to
reduce transmission of vibrations to
the building’s structure.
Warning. Since the condensate
tray is sloped to facilitate flow of
condensates, the unit must be
positioned absolutely level in both
directions.
Installation on the ground
The unit can be installed on the
ground, but make sure the
condensate can be drained properly.
Ensure it is installed on vibration
isolators and that it is level in both
directions.
Hydraulic connections
It is easy to remove the electric
cabinet to facilitate access to the
hydraulic connections. Operating
limits of pressure must not exceed
1.5 Pa.
Installation procedure
- Define the layout of the lines so
that they are as short as possible.
- Limit pressure losses in the lines
caused by pinching, too many
bends and bending radii that are
too small.
- Connection of water inlet and out-
let lines:
The coil is connected by means of
3/4” female ISO R7 connectors.
Warning. Limit the tightening
torque applied to the connector
nuts to prevent deformation of the
piping and seals (risk of leaks).
Installation
Ceiling installation
Preparation of the ceiling and
installation of the unit
A template for drilling into the ceiling
to fix the threaded rods is printed on
the cover of the unit’s packaging.
The angle brackets can also be used
to determine the drilling hole
distances.
Access must be provided on the
water connection end to facilitate
installation, maintenance and access
to the cabinet.
Four 8 mm diam. threaded rods must
be securely fixed into the building’s
slab or structure. Screw a nut A
(Figure 2) sufficiently high onto each
threaded rod. Put the angle brackets B
in place by holding them using a
second nut C. ake sure the angle
brackets are level in both directions
using the bottom nuts C. Once they
are perfectly level insert the FWD unit
and let the angle brackets support it.
Use the top nuts A to tighten the unit
against the corner brackets.
➀
➀
AB
Figure 2 : Angle brackets
Figure 3 : ecommended clearances

8FWD-SVX01D-E4
Installation
Electrical connections
If access to the electric cabinet is
problematic, it can be moved a
maximum distance of 500 mm.
All wiring and earthing must comply
with local standards.
Caution
a) Check the electrical characteristics
on the unit’s name plate. ake
sure the wiring corresponds to the
manufacturer’s electrical diagram
and local standards.
b) Power up the units using one or
more lines protected by a
disconnect switch and fuses.
c) Earth each unit.
d) The wires must not touch the
refrigerant lines, the motors or
other moving parts.
e) The manufacturer does not
assume any liability for problems
caused by modifications to the
unit’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 horizontal
in both directions. Connect the
condensate tray outlet (outer diam.
20 mm).
To ensure satisfactory condensate
drainage, the drainage tube must be
sloped 10°. There must not be a
condensate trap anywhere on the
line. However a siphon can be
provided to prevent outside air being
drawn in by the indoor unit. If the pipe
passes through a room, insulate it to
prevent damage caused by
condensation. We recommend
polyethylene foam (6 mm thick).
Condensate pump (accessory)
If it is not possible to drain the
condensates by gravity, a
condensate pump can be installed as
an accessory .
It can lift the condensates a
maximum of 500 mm. For installation
and connection of the condensate
pump, refer to the submittals
supplied with this accessory.

9
FWD-SVX01D-E4
Installation
Main power supply
It is the installer's responsibility to
ensure that units are protected by an
electrical disconnect device such as a
fuse or circuit breaker. Standard
units are supplied without any
protection. The recommended fuse
size is given in the Technical data
table.
All electrical connections must be
made on the terminal blocks of the
main electrical control box.
WA NING ! Disconnect the power
supply before making electrical
connections. Failure to do so may
cause serious injuries as well as
irreversible damage to certain
electrical components.
WA NING! Use copper
conductors only. Unit terminals
are not designed to accept other
types of wiring. Aluminium or
other materials could lead to
galvanic corrosion or overheating
at the contact point thus
damaging the unit. The
customer's electrical connections
must comply with current
standards.
FWD units manufactured by Trane
comply with CEI regulations.
All power supply wiring must be
sized and selected in accordance
with local code and regulation.
Fast-acting circuit breaker, which is
sensitive to very low levels of current
leakage to ground (max 30mA) must
be installed as a general line
protection.
Only copper conductors ( in.
1.5mm2- ax 4.0mm2) must be used
as unit terminals are not designed to
accept other types of wiring.
For electrical connections of options or accessories, refer to following
diagrams which are supplied with corresponding option/accessory:
otorized water valve for FWD sizes 08-20: 44053756
Valve (Hot water coil): 44053759
Automatic change over kit: 23090607
Lift pump control kit: 44053753
otor connections for FWD sizes 8-20: 23078700
otor connections for FWD sizes 30-45: 23090686
Interconnections diagram: 23090605
otorized water valve for FWD sizes 30-45: 44054611

10 FWD-SVX01D-E4
Installation
Duct connections
FWD units can be fitted directly with
rectangular discharge and intake
ducts.
Warning.The pressure loss caused
by the duct network and
accessories must not exceed the
unit’s available static pressure (see
selection chart).
The air intake can be located at the
back of the unit ➀or underneath it ➁.
DIMENSIONS OF DUCT CONNECTIONS
(INTAKE AND DISCHA GE)
Sizes 08 12 20 30 45
Length 748 948 1148 1148 1148
Width 198 248 298 598 598
Filtering: vital to ensure the unit runs
smoothly.
No filters are supplied with the unit,
but they can be ordered as
accessories:
- Filter box with EU2 filters to fix to
the unit’s intake.
(behind or underneath).
➁
➀
Figure 6 : Connection of ducts

11
FWD-SVX01D-E4

12 FWD-SVX01D-E4

13
FWD-SVX01D-E4

FWD-SVX01D-E4
Space requirement plans
14

FWD-SVX01D-E4 15

FWD-SVX01D-E4
Choice of fan speed
The FWD unit is delivered from the
factory unwired. Please refer to the
selection chart to select the static
pressure according to the flowrate.
Once the fan rotation speed has been
determined, wire up the fan motor to
the required speed using the supplied
electrical diagrams.
For use of temperature control, refer
to the guide supplied with the
thermostat.
Initial checks
- Check the electrical connections
and water pipes are fixed securely.
- Rotate the fan blades by hand to
make sure it rotates freely.
- Check that all nuts and bolts are
tightened correctly.
- ake sure the chilled water piping
and the condensate drainage tube
are properly insulated to avoid
problems with condensation
water flow.
Maintenance
recommendations (regular
use)
Failure to follow these instructions
may cause damage to the unit.
The frequency of maintenance will
depend on the conditions of use of
the unit and will be determined by
regular inspections.
When servicing the units, make sure
also that the air passage through the
coils (both internal and external) is
clean, and free of dirt or debris.
a) Clean the air filter by beating it and
drawing air through it in the
opposite direction to the passage
of air.
b) Check the condensate tubes are
not obstructed.
c) Rotate the fan blades and make
sure they are not damaged. Clean
them if necessary and check they
are correctly aligned.
d) otor - check the wiring, and make
sure the switches operate correctly.
Replace any damaged
components.
e) Safety disconnection and electrical
components - check they operate
correctly.
f) Water circuit - check there are no
leaks.
g) Tighten all the nuts and bolts.
Operation / Maintenance
16

FWD-SVX01D-E4
➇Unscrew the 2 x 2 screws (08) or 2 x
3 screws (12-20-30-45) fixing the
fan motor while holding it up.
➈ ➉ Take out the fan motor assembly,
by pushing outwards on the
bottom of the 2 side panels, taking
care not to damage the insulation
material.
➀ ➁ Unscrew the 4 screws fixing the
panel and remove the panel.
➂➃ Unscrew the 4 screws fixing the
intake support bracket and remove
it.
➄Unscrew the 4 screws fixing the
base of the electrical cabinet by one
turn.
N.B.. The motor cables must be
disconnected in the electrical
cabinet.
➅Push the cabinet upwards and
move it enough to access the
screws fixing the fan motor.
➆Loosen the 4 screws fixing the
condensate tray by a few turns.
Maintenance
Figure 7 : emoval of the fan motor
➀
➀
➁
➂
➂
➄
➄➅
➆
➇
➇
➈
➈
➉
17

FWD-SVX01D-E4
Possible cause
A)The electric cabinet is not connected.
B) The control circuit is not powered up.
A) The thermostat is not controlling the
unit.
A) The electric motors are not powered up.
B)The thermal protection of the motors
has 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 operating
correctly.
G) Heat load is greater than expected.
A) Clogged filters.
B) The fans are rotating the wrong way
C) The air flow is obstructed.
Solution
Check the unit’s general disconnect switch
is closed.
Check the control circuit’s fuse.
Check the thermostat is plugged in (also
refer to the thermostat’s instruction
manual).
Check the fan motors are powered up and
the fan circuit-breakers are reset.
Check the motor winding resistance after
resetting. Check the power supply voltage
and the input current.
See“The unit is not operating”.
Check the set point.
See “No air flow”
Checked the chilled water flow. Check the
gate valves and the water circuit.
Check the unit’s chilled water production.
Refer to the thermostat’s instruction
manual.
Check the zone’s heat load (too much fresh
air).
Check the extent of infiltration of outside
air.
Clean or replace the recycling filters.
Check and correct
Symptom
The 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

19
FWD-SVX01D-E4
Notes

© 2013 Trane All rights reserved
FWD-SVX01D-E4_1213
Supersedes FWD-SVX01C-E4_0912
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conscious print practices that reduce waste.
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Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.