Trane Tsd Users Manual

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Installation
Operation
Maintenance
Voyager™ I Rooftop Units
Cooling-only TSD/TSH 060 072 102 120
Reversible WSD/WSH 060 072 090
Gas-fired YSD/YSH 060 072 090 102 120

RT-SVX20A-E4

General information
Foreword

Warnings and cautions

These instructions are given as a
guide to good practice in the
installation, start-up, operation, and
maintenance by the user, of Trane
TSD/TSH, WSKD/WSH and YSD/YSH
units. They do not contain full
service procedures necessary for
the continued successful operation
of this equipment. The services of a
qualified technician should be
employed through the medium of a
maintenance contract with a
reputable service company. Read
this manual thoroughly before unit
start-up.

Warnings and Cautions appear at
appropriate sections throughout
this manual. Your personal safety
and the proper operation of this
machine require that you follow
them carefully. The constructor
assumes no liability for installations
or servicing performed by
unqualified personnel.

TSD/TSH units are designed to
operate in cooling mode only, with
optional auxiliary heat (electric
heater or hot water coil).
WSD/WSH can operate in cooling
mode or heating mode by reversing
the refrigeration cycle with or
without auxiliary heat.

WARNING! : 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.

YSD/YSH units are designed to
operate In cooling mode and
equipped with a gas fired heating
module.
TSD/TSH, WSD/WSH and YSD/YSH
units are assembled, pressure
tested, dehydrated, charged and run
tested before shipment.

2

RT-SVX20A-E4

General information
Reception

Refrigerant

Maintenance contract

On arrival, inspect the unit before
signing the delivery note. In case of
visible damage: The consignee (or
the site representative) must specify
any damage on the delivery note,
legibly sign and date the delivery
note, and the truck driver must
countersign it. The consignee (or the
site representative) must notify
Trane Epinal Operations - Claims
team and send a copy of the
delivery note. The customer (or the
site representative) should send a
registered letter to the last carrier
within 3 days of delivery.

The refrigerant provided by the
manufacturer meets all the
requirements of our units. When
using recycled or reprocessed
refrigerant, it is advisable to ensure
its quality is equivalent to that of a
new refrigerant. For this, it is
necessary to have a precise analysis
made by a specialized laboratory. If
this condition is not respected, the
manufacturer warranty could be
cancelled.

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.

Reception in France only:
Concealed damage must be looked
for at delivery and immediately
treated as visible damage.
Reception in all countries except
France:
In case of concealed damage: The
consignee (or the site
representative) must send a
registered letter to the last carrier
within 7 days of delivery, claiming
for the described damage. A copy of
this letter must be sent to Trane
Epinal Operations - Claims team.

Warranty
Warranty is based on the general
terms and conditions of the
manufacturer. The warranty is void
if the equipment is repaired or
modified without the written
approval of the manufacturer, 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 or
recommendations is not covered by
the warranty obligation. If the user
does not conform to the rules of
this manual, it may entail
cancellation of warranty and
liabilities by the manufacturer.

RT-SVX20A-E4

Storage
Take precautions to prevent
condensate formation inside the
unit's electrical components and
motors when:
1. The unit is stored before it is
installed; or,
2. The unit is set on the roof curb
and temporary auxiliary heat is
provided in the building.
Isolate all side panel service
entrances and base pan openings
(e.g., conduit holes, S/A and R/A
openings, and flue openings) to
minimize ambient air from entering
the unit until it is ready for start-up.
Do not use the unit's heater as
temporary heat without completing
the start-up procedures detailed
under "Unit Start-Up".
The Trane Company will not assume
responsibility for equipment
damage resulting from
accumulation of condensate on the
unit electrical components.

Training
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.

3

Contents
General information

2

Foreword
Warnings and Cautions
Reception
Warranty
Refrigerant
Maintenance contract
Storage
Training

2
2
3
3
3
3
3
3

Installation

6

Reception of units
Roof curb installation
Dimensions/Weights/Clearances
Installing the unit
Connection of duct network
Condensate drain piping
Gas pipework installation
Filter installation
Supply fan adjustment
Component air pressure drops
Supply fan performances
Electrical connection

6
6
7
9
10
12
13
14
14
16
17
30

Controls

33

Control wiring
CO2 sensors
Remote potentiometer
Fire thermostat
Clogged filter detector
Smoke detector
High temperature safety thermostat
Remote fault relay
Thermostats
Communication Interfaces

4

33
35
39
40
41
41
41
41
42
43

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Contents
Unit Options

44

Hot water coil
Electric Heater
Soft Starter
0 - 25% fresh air hood
Barometric relief

Operation

44
45
45
46
47

48

Operation with a conventional thermostat
Setting the economizer
Test procedures
Test modes
Unit Start-up
Cooling without an Economizer
Low Ambient Operation
Cooling with an Economizer
Economizer Set-Up
ReliaTel™ Control Heating Operation
Ignition Module
Final installation checklist

Maintenance

48
50
52
53
54
56
57
57
58
58
58
59

60

End user routine maintenance
Service technician maintenance
Troubleshooting

RT-SVX20A-E4

60
61
62

5

Installation
General information: The
installation must conform to all
local standards and regulations.

Reception of units
Rooftop unit
There are two ways to handle the
unit:
1. Use the openings in the base to
handle the machine using a
forklift, in accordance with
applicable safety regulations.
2. Use a lifting beam correctly
adjusted to fit the unit (Figure 1).
Unit handling
The units are supplied on the truck
but are not unloaded. An opening is
provided on each corner of the unit
base to facilitate handling. Four
shackles and four slings are
required. Use a lifting beam to
prevent the cables pressing too hard
on top of the unit during lifting. The
structure accommodating the unit(s)
must be designed to support the
equipment in operation, as a
minimum. (Refer to Figures 1 and
2 and Tables 2 and 3.)
Important: For unit to fit on the roof
curb the fork lift pockets must be
removed.
Figure 1 - Unit handing

6

Roof curb (accessory)
Roof curbs are available as an
accessory for downflow units. The
curbs can be adjustable and
supplied pre-assembled on wooden
pallets, packed under plastic film.
Two types of self-adhesive seals are
provided to ensure the roof curb
seal is leak-tight (40 mm wide for
the perimeter, 20 mm wide for the
crosspieces).

Roof curb Installation
(TSD-WSD-YSD
accessories)
Roof curbs are available as an
accessory for "downflow" units to
support the unit and ensure the
water tightness between the rooftop
and the roof.
The curbs can be adjustable and
supplied pre-assembled on wooden
pallets, packed under plastic film.
Two types of self-adhesive seals are
provided separate. (40 mm wide for
the perimeter, 20 mm wide for the
cross pieces). Make sure they are
properly installed where indicated
to assure an adequate curb to unit
seal.

Figure 2 - Rigging

1

2

1 = Remove 2 fork lift brackets
2 = Remove 2 metal runners and 3
wooden boards
Lift the unit enough to allow the
removal of two Fork Lift brackets
and hardware. Remove the two Fork
Lift brackets, two metal runners and
three wooden boards as shown in
Figure 2.

Instructions for the roof curb
assembly and installation with curb
dimensions are provided with each
roof curb kit.

RT-SVX20A-E4

Installation
Dimensions/Weights/
Clearances

Figure 3 - Minimum clearances

The structure accommodating the
unit(s) must be designed to support
the equipment in operation, as a
minimum. Refer to Table 2 and the
space requirement plan.

Table 1 - Minimum recommended clearances
Unit size

Mimum clearances (mm)
1

2

3

4

5

TSD/TSH 060

1829

1219

914

914

914

TSD/TSH 072

1829

1219

914

914

914

TSD/TSH 090

1829

1219

914

914

914

TSD/TSH 102

1829

1219

914

914

914

TSD/TSH 120

1829

1219

914

914

914

YSD/YSH 060

1829

1219

914

914

914

YSD/YSH 072

1829

1219

914

914

914

YSD/YSH 090

1829

1219

914

914

914

YSD/YSH 102

1829

1219

914

914

914

YSD/YSH 120

1829

1219

914

914

914

WSD/WSH 060

1829

1219

914

914

914

WSD/WSH 072

1829

1219

914

914

914

WSD/WSH 090

1829

1219

914

914

914

Table 2 - Unit weights and center of gravity
Maximum weight
Unit Size

Shipping
(kg)

Net
(kg)

Corner weight (1)
A
(kg)

B
(kg)

C
(kg)

Center of gravity
D
(kg)

Length
(mm)

Width
(mm)

TSD/TSH 060

259

235

75

56

48

56

790

480

TSD/TSH 072

365

326

107

83

58

78

970

560

TSD/TSH 090

428

389

131

101

67

89

970

530

TSD/TSH 102

445

405

133

106

72

94

990

560
560

TSD/TSH 120

485

445

147

115

81

104

990

YSD/YSH 060

285

260

81

64

54

62

810

510

YSD/YSH 072

390

350

113

90

64

83

990

560

YSD/YSH 090

458

419

139

110

75

95

970

530

YSD/YSH 102

474

434

141

114

79

100

1020

560

YSD/YSH 120

520

481

155

126

89

111

1020

560

WSD/WSH 060

266

241

77

58

49

58

790

480

WSD/WSH 072

408

368

122

93

66

87

970

560

WSD/WSH 090

418

378

128

95

67

88

970

530

Notes:
(1) Corner weights are given for information only. All models must be supported continuously by a curb or
equivalent frame support.

RT-SVX20A-E4

7

Installation
Figure 4

A

Center of
gravity length

B

Center of
gravity width

C

D
Center of
gravity

Table 3 - Factory-installed options and accessories net weights (kg)
Motorized
Outside Air
Damper

Manual
Outside Air
Damper

Economizer

Barometric
Relief

TSD/TSH 060

11,8

3,2

9,1

7,3

31,8

TSD/TSH 072

16,3

4,5

13,6

11,8

52,2

TSD/TSH 090

16,3

4,5

13,6

11,8

52,2

3,6

13,6

17,0

TSD/TSH 1020

16,3

4,5

13,6

11,8

52,2

3,6

13,6

19,0

TSD/TSH 120

16,3

4,5

13,6

11,8

52,2

3,6

13,6

19,0

YSD/YSH 060

11,8

3,2

9,1

7,3

31,8

-

6,8

YSD/YSH 072

16,3

4,5

13,6

11,8

52,2

3,6

13,6

YSD/YSH 090

16,3

4,5

13,6

11,8

52,2

3,6

13,6

YSD/YSH 102

16,3

4,5

13,6

11,8

52,2

3,6

13,6

YSD/YSH 120

16,3

4,5

13,6

11,8

52,2

3,6

13,6

WSD/WSH 060

11,8

3,2

9,1

7,3

31,8

-

6,8

14,0

WSD/WSH 072

16,3

4,5

13,6

11,8

52,2

3,6

13,6

17,0

WSD/WSH 090

16,3

4,5

13,6

11,8

52,2

3,6

13,6

17,0

Unit size

Roof Curb

Oversized
Motor

Electric
Heaters

Hot water
coil

-

6,8

14,0

3,6

13,6

17,0

Notes:
(1) Weights for options not listed are < 3 kg.
(2) Net weight should be added to unit weight when ordering factory-installed accessories.
(3) Some accessories are not available on all units.

8

RT-SVX20A-E4

Installation
Installing the unit
Discharge Conversion
If a unit is to be converted to
Vertical discharge, a panel must be
acquired from Trane.
If a unit is to be converted to
Horizontal discharge, the following
conversion must be performed:
1. Remove the return and supply
duct covers.
2. Apply gasket to the return duct
cover.

3. Position duct covers as shown in
Figure 4. The supply duct cover is
installed (insulation side down)
over the downflow return
opening by engaging one side of
the panel under a retaining angle
and securing the other side with
3 screws.
4. Slide return duct cover
(insulation side up) into supply
openings until outer edge of the
duct cover engages with the two
retaining clips on the duct
flanges. Secure the outer edge of
the each duct cover with two
screws.

Figure 5 - Conversion to horizontal
discharge
3

1

2

1 = Supply duct cover, insulation side
down
2 = Return duct cover with gasket
installed, insulation side up
3 = Edge of duct cover goes under
retaining angle

Unit mounting on roof
Fix the rooftop curb on the joint
beam of the building's structure.
Make the rooftop curb's sealing
surface level using angle brackets
adjusted by screw bolts, located
around its perimeter. Place the
adhesive seals on the curb's sealing
surface (perimeter and cross
pieces). Make the rooftop leak-tight
around the curbs before installing
the unit, in compliance with current
construction standards.
Figure 6 - Unit mounting on roof

Note: The unit must be installed
perfectly level to ensure
condensates flow from the
condensate tray.
The rooftop unit nests into the curb
and is supported by it. Position the
unit, taking care to comply with the
indicated directions: the unit's
discharge and intake openings must
match those of the curb.

1

1 = Frame

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9

Installation
Installing the unit on the ground
To install the unit on the ground, its
base must be level and supported
securely. For horizontal discharge
units, a support is required such as
a metal or concrete slab whose
height must be determined
according to the amount of snow
cover, to prevent problems with
condensation drainage and
obstruction of the external coil. If
necessary use an anti-vibration
material between the rooftop unit's
base and the support.
Note: Unit installation must comply
to local codes

Connection of duct
network
1) Downflow discharge units
(TSD,WSD,YSD)
Using the rooftop curb
• The rooftop curb must be
insulated on the outside walls at
the discharge and intake
openings to prevent
condensation in the ducts.
• The rims around the discharge
and intake openings make it
possible to attach the flanges on
the ends of the ducts. If you are
using rigid duct ends
recommended on the rooftop
curb plan, it is essential to fix
these components before
installing the unit.

•

For the design of the duct
network, comply with
recommendations currently
applicable on the market, in
particular:
. Installation of a section of
flexible ducts to limit
transmission of the unit's
vibrations
. Use of movable vanes or
deflectors to reduce the sound
level.

2) Horizontal discharge units
(TSH,WSH,YSH)
• The intake and discharge ducts
must be insulated (thermal
insulation).
• The duct section located outside
must be leak-tight.
• Provide a flexible connector to
prevent transmission of the unit
vibrations. This flexible duct
must be installed inside the
building.
Note: In case of use of units with
economizer option, temperature
and humidity sensors must be
installed in return duct.
Economizer linkage is factory
mounted but the damper position
must be adjusted on site.

Figure 7 - Unit installation on the ground

1 = Concrete slab

10

RT-SVX20A-E4

Installation
Table 4 - Duct dimensions for downflow units (mm)
Unit size

A

B

C

D

E

Flanges

TSD 060

619

357

411

459

356

32

YSD 060

610

356

394

457

356

32

WSD 060

819

357

411

459

356

32

TSD/WSD 072/090

875

451

451

875

356

31

TSD 102/120

875

451

451

875

356

31

YSD 072/090/102/120

816

444

444

838

356

31

Table 5 - Duct dimensions for downflow units (mm)
Unit size

A

B

C

D

TSH/WSH 060

591

337

375

438

YSH 060

591

337

375

438

TSH/WSH/YSH 072/090

832

425

606

489

TSH/YSH 102/120

832

425

606

489

Figure 8 - Duct dimensions for downflow units

Figure 9 - Duct dimensions for horizontal units

B
A

C

D

A

R
S

R

S

C
B

E

D
S = Supply
R = Return

RT-SVX20A-E4

S = Supply
R = Return

11

Installation
Condensate drain piping

Figure 10 - Condensate drain location

A 3/4" condensate drain connection
with P-trap is provided. Follow local
codes and standard piping practices
when running the drain line. Install
a trap and be sure to fill with water
before starting the unit. Pitch the
line downward, away from the unit
to avoid long, level, horizontal runs.
Refer to Figure 11.
The condensate drain is reversible
to allow installation of a drain tap
on either side of the unit.

1

1 = Main condensate drain location

Figure 11 - Condensate drain line location

1
2
3
4

12

=
=
=
=

Static pressure drain pan
Panel enclosure
¾ " drain
Cleanout plug

RT-SVX20A-E4

Installation

The installation must conform to all
standards and regulations.

CAUTION! Should the pressure at
the unit valve gas inlet be higher
than 0.035 bar, an expansion valve
must be installed.

The gas supply pipework and gas
stop valve to be installed near the
unit must be sized so as to ensure
the gas pressure is sufficient at the
unit inlet when operating at full
load.

The pipework must be selfsupporting and the final connection
to the burner must be made by a
flexible pipe. Provide a dust
protection (filter) upstream the unit
connection.

Gas pipework installation

CAUTION! The gas pipework must
not exert any stress on the burner
gas connection.
Note: Expansion valve must be
adapted to the type of gas used:
• G 20: 20 mb
• G 25: 25 mb
• G 31 (Propane): 37 or 50 mb
Table 6 - Gas burner models
Unit

Burner size

YSD/YSH 060

G120

YSD/YSH 072

G200

YSD/YSH 090

G200

YSD/YSH 102

G250

YSD/YSH 120

G250

See Table 51 for burner
performance.

Figure 12 - Typical gas supply pipework

Gas leak check procedure
1. Vent the gas line
2. Gas supply line pressure test:
close valve 4 and open valve 2
3. Leak-check the gas pipe.
Look for gas pipe leaks using
"Typol", "1000 bulles" or a similar
product. Do not use soapy water.
WARNING! Never use an open
flame to check for gas leaks.
Required gas pressure at the unit
inlet connection are given in
Table 50.
Note: To operate with propane gas,
the burner is fitted with a pressure
limiter (supplied by Trane)

1 = Evaporator section
2 = Gas burner section
3 = Condenser section
4 = Gas supply connection
5 = Gas supply line
6, 8 = Gas stop valve (Field supplied)
7 = Expansion valve (Field supplied)
9 = Filter (Field supplied)

RT-SVX20A-E4

13

Installation
Filter installation

Supply fan adjustment

To gain access to filters, remove the
supply fan access panel on
downflow units and the filter access
panel on the end for horizontal
units.

Use the following procedure to
determine the proper adjustment of
the supply fan for a specific
application.
1. Determine total external static
pressure about system and
accessories.
• Obtain the design airflow rate
and the design external static
pressure drop through the
distribution system.
• Add static pressure drop of the
accessories installed on the unit.
(Table 9)
• Add the total accessory static
pressure drop (from step 1b) to
the design external static
pressure (from step 1a). The sum
of these two values is the total
system external static pressure.
2. Using the Tables 10 through 35 to
find the external static pressure
that most closely approximates
total system external static
pressure. Then locate the
appropriate airflow rate for your
unit. The value obtained
represents the brake horsepower
for the supply fan motor and the
fan RPM.
3. Adjust motor sheave according
to Table 8.

Number and size of filters is
determined by size and
configuration of the unit. If
disposable filters were chosen as an
option, they are shipped in the
supply fan section.
CAUTION! Do not operate unit
without filters in place.
The maximum pressure drops
allowable on filters are:
EU2/G2: 120 Pa
EU4/G4: 150 Pa

Table 7 - Filter arrangement
EU2/G2

EU4/G4

Unit
Quantity

Size

Quantity

Size

TSD/TSH/YSD/YSH/WSD/WSH 060

2

(508x762x25)

2

(500x750x25)

TSD/TSH/YSD/YSH/WSD/WSH 072

4

(406x635x50)

4

(395x625x50)

TSD/TSH/YSD/YSH/WSD/WSH 090

4

(406x635x50)

4

(395x625x50)

TSD/TSH/YSD/YSH 102

4

(508x635x50)

4

(500x625x50)

TSD/TSH/YSD/YSH 120

4

(508x635x50)

4

(500x625x50)

14

RT-SVX20A-E4

Installation
To increase airflow

To adjust belt

Loosen variable sheave set screw
and turn sheave clockwise.

The fan belts must be inspected
periodically to assure proper unit
operation. Replacement is
necessary if the belts appear frayed
or worn.

To decrease airflow
Loosen variable sheave set screw
and turn sheave counter-clockwise.

Units with dual belts require a
matched set of belts to ensure equal
belt length.

When removing or installing the
new belts, do not stretch them over
the sheaves. Loosen the belts using
the belt tension adjustment bolts on
the motor mounting base.
Once the new belts are installed,
adjust the belt tension.

Table 8 - Motor sheave / Fan speed
Fan speed (RPM)
Standard drive & motor
6 turns
Open

5 turns
Open

4 turns
Open

3 turns
Open

2 turns
Open

1 turns
Open

Closed

TSD/TSH 060

N/A

898

967

1036

1105

1174

1243

TSD/TSH 072

N/A

698

751

806

859

913

967

TSD/TSH 090

N/A

752

806

860

914

968

1020

TSD/TSH 102

N/A

688

737

786

835

885

934

TSD/TSH 120

N/A

782

838

894

950

1006

1062

YSD/YSH 060

N/A

1036

1105

1174

1243

1312

1381

YSD/YSH 072

N/A

806

860

913

968

1022

1074

YSD/YSH 090

859

913

967

1021

1075

1129

N/A

YSD/YSH 102

786

836

885

934

982

1032

N/A

YSD/YSH 120

894

950

1006

1062

1118

1174

N/A

WSD/WSH 060

N/A

898

967

1036

1105

1174

1243

WSD/WSH 072

N/A

698

751

806

859

913

967

WSD/WSH 090

N/A

752

806

860

914

968

1020

Closed

Unit

Fan speed (RPM)
Oversized drive & motor
6 turns
Open

5 turns
Open

4 turns
Open

3 turns
Open

2 turns
Open

1 turns
Open

TSD/TSH 060

N/A

TSD/TSH 072

N/A

1243

1311

1379

1450

1515

1588

967

1021

1075

1128

1183

1235

TSD/TSH 090
TSD/TSH 102

1112

1182

1252

1322

1392

1460

N/A

N/A

971

1041

1111

1181

1251

1321

TSD/TSH 120

1062

1118

1174

1229

1285

1341

N/A

YSD/YSH 060

-

-

-

-

-

-

-

YSD/YSH 072

N/A

967

1021

1075

1128

1183

1235

YSD/YSH 090

1112

1182

1252

1322

1392

1460

N/A

YSD/YSH 102

N/A

971

1041

1111

1181

1251

1321

YSD/YSH 120

1062

1118

1174

1229

1285

1341

N/A

WSD/WSH 060

N/A

1243

1311

1379

1450

1515

1588

Unit

WSD/WSH 072

N/A

967

1021

1075

1128

1183

1235

WSD/WSH 090

1112

1182

1252

1322

1392

1460

N/A

RT-SVX20A-E4

15

Installation
Component air pressure drops
Table 9 - Pressure drop through accessories

Unit
size

060

072

090

102

120

16

Filter
EU4/G4

Economizer
100%
outside air

Airflow
(m3/h)

Filter
EU2/G2

Electric
heater

Hot water
coil

3060

31

50

38

17

49

3400

38

55

46

21

55

3740

46

61

55

25

62

4080

55

66

64

30

68

3670

13

37

27

7

46

4080

16

42

29

9

52

4490

19

46

31

11

58

4900

23

50

33

13

64
66

4590

19

47

33

12

5100

24

52

39

15

74

5610

29

57

45

20

83

6120

35

62

52

25

92
64

5200

16

42

40

8

5780

20

47

50

10

72

6360

25

52

62

12

81

6940

30

57

75

15

90
84

6120

22

50

52

11

6800

27

55

62

14

95

7480

33

61

73

17

106

8160

40

66

85

20

117

RT-SVX20A-E4

Installation
Supply fan performances
Table 10 - TSD 060 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

250

275

300

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

Fan
RPM

kW

Fan
RPM

kW

2720

-

-

-

-

-

-

-

-

-

-

899

0.43

944

0.49

985

0.54

1023

0.59

1060

0.64

1093

0.69

1126

0.74

3060

-

-

-

-

-

-

-

-

904

0.49

947

0.54

988

0.58

1028

0.64

1067

0.70

1104

0.76

1138

0.82

1171

0.87

3400

-

-

-

-

-

-

918

0.57

958

0.62

998

0.67

1036

0.71

1073

0.76

1111

0.82

1147

0.89

1182

0.96

1215

1.02

3740

-

-

-

-

930

0.65

977

0.71

1016

0.77

1053

0.82

1089

0.88

1124

0.93

1158

0.98

1191

1.03

1226

1.10

1258

1.17

4080

909

0.71

950

0.76

990

0.80

1034

0.87

1074

0.93

1110

1.00

1143

1.06

1177

1.12

1209

1.17

1241

1.23

1272

1.29

-

-

325

350

375

m3/h

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

2720

1160

0.79

1190

0.84

1222

0.90

3060

1203

0.93

1232

0.98

1262

1.04

3400

1246

1.09

1276

1.15

1306

1.21

3740

1290

1.25

-

-

-

-

4080

-

-

-

-

-

-

Table 11 - TSH 060 Available static pressure
External Static Pressure (Pa)
25

50

75

m3/h

RPM

kW

RPM

kW

2720

-

-

-

-

3060

-

-

-

-

3400

-

-

908

0.54

3740

923

0.63

978

4080

997

0.80

1049

325

100

RPM

125

kW

RPM

kW

-

-

898

897

0.48

953

961

0.60

0.69

1028

0.87

1096

350

150

RPM

kW

0.43

953

0.54

1008

1012

0.67

0.76

1075

0.94

1140

175

200

225

250

275

300

RPM

kW

Fan
RPM

kW

Fan
RPM

kW

0.71

1168

0.77

1206

0.83

1241

0.89

0.85

1219

0.92

1256

0.99

1291

1.05

1237

1.02

1274

1.09

1309

1.16

1343

1.24

1.14

1294

1.22

1330

1.29

-

-

-

-

-

-

-

-

-

-

-

-

-

RPM

kW

RPM

kW

RPM

kW

RPM

kW

0.48

1001

0.54

1045

0.59

1087

0.60

1058

0.67

1102

0.73

1143

0.65

1129

0.79

1181

1062

0.74

1111

0.81

1157

0.88

1198

0.95

0.83

1120

0.91

1166

0.99

1211

1.06

1254

1.02

1183

1.10

1223

1.18

1266

1.27

-

375

m3/h

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

2720

1275

3060

1326

0.96

1306

1.02

1338

1.09

1.12

1359

1.19

1390

1.26

3400

1376

1.31

-

-

-

-

3740

-

-

-

-

-

-

4080

-

-

-

-

-

-

kW

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

17

Installation
Table 12 - TSD 072 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

3260

-

-

-

-

-

-

-

-

-

-

726

0.41

769

0.47

811

0.52

851

3670

-

-

-

-

-

-

-

-

706

0.43

751

0.49

792

0.55

832

0.61

871

4080

-

-

-

-

-

-

-

-

732

0.51

777

0.58

818

0.64

856

0.71

893

4490

-

-

-

-

-

-

715

0.54

758

0.60

802

0.68

845

0.75

883

0.82

919

4890

-

-

-

-

706

0.58

749

0.64

789

0.71

830

0.79

870

0.87

909

0.95

945

325

350

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

275
Fan
RPM

kW

300
Fan
RPM

RPM

kW

kW

0.58

889

0.65

925

0.71

960

0.77

0.67

908

0.74

944

0.81

978

0.87

0.77

930

0.84

964

0.91

998

0.99

0.89

953

0.96

986

1.04

1019

1.11

1.02

979

1.10

1011

1.18

1043

1.26

375

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

3260

994

0.83

1026

0.89

1057

0.95

3670

1010

0.94

1043

1.01

1073

1.08

4080

1030

1.06

1063

1.14

1092

1.21

4490

1051

1.19

1082

1.27

1112

1.35

4890

1073

1.34

1103

1.42

1133

1.51

m3/h

RPM

250

Table 13 - TSH 072 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

kW

RPM

kW

Fan
RPM

0.45

814

0.51

857

0.57

899

0.63

939

0.70

978

0.54

843

0.60

883

0.67

922

0.74

960

0.81

996

839

0.65

877

0.71

914

0.78

950

0.85

984

0.93

1020

1.00

1055

1.08

875

0.77

914

0.85

949

0.91

984

0.98

1016

1.06

1049

1.14

1081

1.23

0.91

950

0.99

986

1.07

1019

1.14

1051

1.22

1081

1.30

1112

1.38

RPM

kW

3260

-

-

-

-

-

-

3670

-

-

-

-

-

-

4080

-

-

-

-

701

0.45

751

0.51

798

0.59

4490

-

-

710

0.51

745

0.56

788

0.62

833

0.69

4890

726

0.58

762

0.64

795

0.70

828

0.76

869

0.82

911

325

350

0.42

300

RPM

kW

-

275

kW

RPM

716

250

RPM

kW

RPM

225

kW

RPM

kW

200

RPM

m3/h

RPM

175

kW

RPM

kW

726

0.39

771

762

0.48

804

Fan
RPM

kW

0.76

1015

0.83

0.87

1034

0.95

kW

375

m3/h

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

3260

1051

0.90

1086

3670

1069

1.02

1103

0.97

1118

1.04

1.09

1136

1.17

4080

1089

1.16

4490

1113

1.31

1122

1.23

1154

1.31

1144

1.40

1176

1.48

4890

1141

1.47

1170

1.57

1199

1.66

Standard drive
Oversize drive

18

Note : Data includes pressure drops for standard filters and wet coils

RT-SVX20A-E4

Installation
Table 14 - TSD 090 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

4080

-

-

-

-

-

-

-

-

750

0.54

794

0.60

834

0.67

873

0.73

909

4590

-

-

-

-

-

-

-

-

787

0.66

830

0.74

871

0.82

908

0.89

943

5100

-

-

-

-

747

0.68

789

0.74

827

0.82

867

0.90

906

0.98

944

1.06

980

RPM

kW

RPM

kW

RPM

250

kW

275
Fan
RPM

kW

0.87

980

1.04

1010

1013

1.23

RPM

kW

0.80

945

0.96

977

1.15

300
Fan
RPM

kW

0.95

1013

1.02

1.11

1043

1.19

1045

1.31

1076

1.39

5610

-

-

755

0.77

797

0.85

836

0.92

873

1.00

908

1.08

944

1.17

980

1.26

1016

1.35

1050

1.45

1081

1.54

1111

1.63

6120

771

0.88

809

0.96

848

1.06

885

1.14

921

1.22

954

1.30

986

1.39

1019

1.49

1052

1.58

1085

1.69

1116

1.79

1148

1.89

325

m3/h

Fan
RPM

4080
4590

350

375

kW

Fan
RPM

1046

1.10

1076

1.17

1106

1.25

1074

1.27

1105

1.36

1134

1.44

5100

1105

1.47

1134

1.56

1163

1.65

5610

1141

1.72

1168

1.80

1197

1.90

6120

1177

1.99

1204

2.08

1232

2.18

kW

Fan
RPM

kW

Table 15 - TSH 090 Available static pressure
External Static Pressure (Pa)
25

50

75

m3/h

RPM

kW

RPM

kW

4080

-

-

-

-

-

4590

-

-

-

-

773

5100

771

0.68

805

0.74

837

5610

842

0.89

873

0.96

903

6120

913

1.14

942

1.22

970

325

m3/h

Fan
RPM

350

100

RPM

kW

125

RPM

kW

-

769

0.62

817

0.81

870

1.03

930

1.30

996

150

175

200

225

RPM

kW

RPM

kW

RPM

kW

RPM

kW

0.54

814

0.61

855

0.67

893

0.73

929

0.68

862

0.76

904

0.85

941

0.92

975

0.87

912

0.94

951

1.03

989

1.12

1.10

963

1.17

1000

1.25

1037

1.34

1.37

1021

1.45

1052

1.52

1086

1.61

250

275

300

RPM

kW

Fan
RPM

kW

Fan
RPM

0.88

999

0.96

1035

1.04

1070

1.12

1.06

1041

1.14

1073

1.22

1104

1.31

1056

1.28

1088

1.36

1117

1.44

1146

1.53

1106

1.55

1136

1.63

1165

1.72

1194

1.80

1153

1.82

1184

1.93

1215

2.04

1242

2.13

RPM

kW

0.81

965

0.98

1009

1025

1.21

1073

1.45

1121

1.71

kW

375

kW

Fan
RPM

kW

Fan
RPM

kW

4080

1104

1.19

1137

1.27

1168

1.35

4590

1136

1.40

1167

1.48

1198

1.57

5100

1176

1.62

1205

1.72

1233

1.82

5610

1220

1.88

1248

1.98

1275

2.08

6120

1269

2.22

1295

2.31

1319

2.40

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

19

Installation
Table 16 - TSD 102 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

4620

-

-

-

-

-

-

-

-

5200

-

-

-

-

-

-

-

-

5780

-

-

-

-

-

-

689

0.68

RPM

150

175

200

225

250

275

RPM

kW

RPM

kW

RPM

kW

Fan
RPM

0.71

769

0.81

802

0.90

833

1.00

0.83

796

0.93

828

1.03

861

1.13

0.96

825

1.07

856

1.18

887

kW

RPM

kW

RPM

kW

-

-

695

0.62

733

688

0.64

725

0.73

761

724

0.76

759

0.86

792

300

kW

Fan
RPM

kW

863

1.11

892

1.21

891

1.24

919

1.35

1.28

917

1.40

946

1.51

6350

-

-

-

-

693

0.72

729

0.82

764

0.92

795

1.01

826

1.11

857

1.22

887

1.34

916

1.46

945

1.58

974

1.70

6930

-

-

706

0.80

738

0.89

770

0.98

804

1.09

834

1.19

864

1.30

892

1.40

920

1.52

948

1.64

976

1.78

1002

1.91

325

m3/h

Fan
RPM

350

kW

Fan
RPM

375

kW

Fan
RPM

400

kW

Fan
RPM

kW

425
Fan
RPM

450

kW

Fan
RPM

kW

475
Fan
RPM

500

kW

Fan
RPM

kW

4620

920

1.33

946

1.44

973

1.55

999

1.67

1025

1.79

1050

1.90

1073

2.02

1098

2.14

5200

946

1.46

973

1.58

999

1.71

1024

1.83

1048

1.96

1072

2.09

1096

2.22

1119

2.34

5780

974

1.63

1001

1.75

1026

1.88

1051

2.01

1074

2.14

1099

2.27

1121

2.41

1143

2.55

6350

1001

1.82

1028

1.95

1054

2.08

1079

2.20

1103

2.34

1126

2.48

1148

2.62

1170

2.76

6930

1029

2.04

1055

2.17

1081

2.30

1105

2.43

1130

2.58

1154

2.72

1176

2.85

1199

3.01

Table 17 - TSH 102 Available static pressure
External Static Pressure (Pa)
25

m3/h

50

RPM

kW

75

RPM

kW

100

RPM

kW

RPM

125

kW

RPM

150

kW

RPM

kW

175

200

RPM

kW

225

RPM

kW

RPM

250

kW

RPM

275

kW

Fan
RPM

kW

300
Fan
RPM

kW

4620

-

-

-

-

-

-

689

0.58

734

0.67

781

0.77

826

0.88

865

0.98

898

1.07

928

1.16

956

1.25

982

1.33

5200

-

-

-

-

693

0.64

735

0.73

773

0.82

812

0.92

855

1.03

897

1.15

934

1.27

969

1.38

999

1.49

1026

1.58

5780

-

-

711

0.75

743

0.82

781

0.91

819

1.01

853

1.11

886

1.21

925

1.34

964

1.47

1000

1.60

1034

1.73

1067

1.86

6350

735

0.89

770

0.97

799

1.04

830

1.12

865

1.23

899

1.34

930

1.45

960

1.56

994

1.68

1028

1.82

1063

1.96

1098

2.11

6930

796

1.14

828

1.23

857

1.31

883

1.39

913

1.48

945

1.60

977

1.72

1006

1.84

1034

1.96

1061

2.08

1093

2.23

1125

2.38

325

350

400

m3/h

Fan
RPM

4620

1008

1.42

5200

1052

1.68

5780

1094

1.97

1120

2.08

1145

6350

1129

2.26

1158

2.40

1185

6930

1157

2.53

1188

2.70

1218

2.86

kW

Fan
RPM

375

425

kW

Fan
RPM

1033

1.51

1056

1.60

1079

1.69

1102

1.78

1125

1.87

1146

1078

1.78

1101

1.88

1124

1.98

1146

2.08

1168

2.18

1188

2.20

1168

2.31

1191

2.42

1213

2.53

1234

2.63

1254

2.74

2.53

1210

2.66

1234

2.78

1256

2.90

1278

3.03

1299

3.15

1245

3.01

1273

3.16

1297

3.31

-

-

-

-

kW

Fan
RPM

500

Fan
RPM

kW

Fan
RPM

475

kW

kW

Fan
RPM

450

Fan
RPM

kW

1.95

1168

2.04

2.27

1209

2.37

kW

Standard drive
Oversize drive

20

Note : Data includes pressure drops for standard filters and wet coils

RT-SVX20A-E4

Installation
Table 18 - TSD 120 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

5440

-

-

-

-

-

-

-

-

-

-

6120

-

-

-

-

-

-

-

-

-

-

RPM

175

200

225

kW

RPM

kW

RPM

kW

RPM

-

-

789

0.93

822

1.03

797

0.99

829

1.10

860

1.22

250

275
Fan
RPM

kW

300
Fan
RPM

kW

RPM

kW

kW

856

1.14

887

1.25

917

1.36

945

1.47

892

1.34

922

1.46

951

1.57

979

1.69

6800

-

-

-

-

-

-

782

1.01

814

1.11

844

1.21

874

1.32

903

1.44

932

1.56

960

1.69

988

1.82

1015

1.95

7480

-

-

-

-

803

1.14

834

1.24

864

1.36

894

1.48

922

1.59

948

1.70

975

1.82

1001

1.95

1028

2.09

1053

2.23

8160

803

1.21

833

1.31

861

1.42

887

1.52

916

1.64

945

1.77

972

1.90

997

2.02

1022

2.14

1046

2.27

1071

2.41

1095

2.55

325

m3/h

Fan
RPM

350

kW

Fan
RPM

375

kW

Fan
RPM

400

kW

Fan
RPM

425

kW

Fan
RPM

450

475

kW

Fan
RPM

kW

500

Fan
RPM

kW

Fan
RPM

kW

5440

973

1.60

999

1.72

1024

1.84

1048

1.97

1072

2.10

1095

2.23

1117

2.37

1140

2.51

6120

1007

1.82

1033

1.94

1059

2.07

1082

2.20

1107

2.34

1130

2.49

1152

2.63

1173

2.77

6800

1042

2.08

1068

2.21

1093

2.35

1117

2.48

1142

2.63

1164

2.76

1187

2.91

1209

3.06

7480

1078

2.38

1103

2.52

1128

2.66

1152

2.81

1176

2.95

1198

3.10

1221

3.25

-

-

8160

1119

2.70

1142

2.86

1166

3.02

1189

3.17

1212

3.33

-

-

-

-

-

-

Table 19 - TSH 120 Available static pressure
External Static Pressure (Pa)
25

m3/h

50

RPM

kW

75

RPM

kW

100

RPM

kW

RPM

125

kW

150

RPM

kW

175

RPM

kW

RPM

200

225

kW

RPM

kW

250

275

300

RPM

kW

RPM

kW

Fan
RPM

kW

Fan
RPM

kW

5440

-

-

-

-

-

-

-

-

807

0.94

844

1.04

886

1.16

926

1.28

965

1.41

1000

1.53

1029

1.64

1057

1.75

6120

-

-

-

-

792

0.99

829

1.08

865

1.19

898

1.30

930

1.41

965

1.53

1002

1.67

1038

1.81

1072

1.95

1106

2.10

6800

802

1.13

833

1.22

860

1.29

890

1.38

923

1.50

956

1.62

986

1.73

1015

1.85

1044

1.98

1077

2.12

1111

2.28

1143

2.43

7480

876

1.49

905

1.58

931

1.67

955

1.75

983

1.86

1014

1.99

1045

2.12

1072

2.25

1098

2.37

1125

2.51

1152

2.65

1182

2.81

8160

950

1.91

977

2.02

1002

2.11

1025

2.20

1048

2.30

1074

2.42

1102

2.56

1131

2.71

1156

2.84

1181

2.98

1205

3.12

1229

3.27

325

350

Fan
RPM

5440

1084

1.86

1108

1.96

1132

2.06

1155

6120

1134

2.22

1160

2.35

1185

2.47

1209

6800

1174

2.58

1204

2.74

1232

2.90

1260

7480

1211

2.97

1241

3.14

1270

3.31

-

8160

-

-

-

-

-

-

-

kW

Fan
RPM

400

m3/h

kW

Fan
RPM

375

kW

Fan
RPM

425

450

Fan
RPM

kW

2.17

1177

2.59

1231

3.05
-

kW

475

500

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

2.27

1198

2.37

1219

2.48

1239

2.58

2.70

1252

2.82

1274

2.94

1295

3.06

1283

3.18

1306

3.32

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

21

Installation
Table 20 - YSD 060 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

2720

-

-

-

-

-

-

-

-

-

-

-

-

3060

-

-

-

-

-

-

-

-

-

-

-

-

3400

-

-

-

-

-

-

-

-

1052

0.73

1089

0.79

3740

-

-

-

-

1051

0.82

1087

0.87

1122

0.92

1156

4080

1055

0.90

1093

0.97

1127

1.03

1160

1.09

1193

1.15

1225

325

350

m3/h

Fan
RPM

kW

2720

1208

3060

1262

3400

RPM

200

225

250

275

300

Fan
RPM

kW

0.72

1145

0.87

1202

1229

1.05

1.17

1288

-

-

kW

RPM

kW

RPM

kW

-

-

1043

0.62

1078

1066

0.70

1103

0.76

1137

1126

0.85

1162

0.92

0.98

1190

1.03

1224

1.20

1256

1.26

1288

Fan
RPM

kW

0.77

1177

0.82

0.93

1232

0.98

1260

1.11

1289

1.17

1.24

1320

1.32

-

-

-

-

-

-

-

RPM

kW

0.67

1113

0.82

1169

1196

0.98

1.10

1257

1.32

-

375

Fan
RPM

kW

Fan
RPM

kW

0.87

1238

0.93

1268

0.98

1.04

1290

1.09

1319

1.15

1319

1.24

1347

1.30

-

-

3740

-

-

-

-

-

-

4080

-

-

-

-

-

-

Table 21 - YSH 060 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

m3/h

RPM

kW

RPM

kW

RPM

kW

2720

-

-

-

-

-

-

-

-

3060

-

-

-

-

-

-

1056

0.66

RPM

kW

RPM

150

175

kW

RPM

200

kW

RPM

225

kW

RPM

kW

RPM

-

-

1069

0.63

1111

0.68

1151

0.74

1189

1100

0.73

1141

0.79

1180

0.85

1218

0.92

1255

250

kW

275

300

Fan
RPM

kW

0.87

1260

1.05

1324

RPM

kW

0.80

1225

0.98

1290

Fan
RPM

kW

0.93

1293

0.99

1.12

1357

1.19
-

3400

-

-

1033

0.70

1083

0.77

1131

0.84

1176

0.91

1216

0.98

1253

1.05

1289

1.13

1323

1.20

1357

1.27

-

-

-

3740

1072

0.83

1117

0.90

1163

0.98

1209

1.06

1251

1.14

1292

1.21

1329

1.29

-

-

-

-

-

-

-

-

-

-

4080

1161

1.06

1203

1.14

1245

1.23

1287

1.31

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

325

350

375

m3/h

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

2720

1324

1.06

1355

1.13

1383

1.20

3060

1390

1.26

-

-

-

-

3400

-

-

-

-

-

-

3740

-

-

-

-

-

-

4080

-

-

-

-

-

-

Standard drive
Oversize drive

22

Note : Data includes pressure drops for standard filters and wet coils

RT-SVX20A-E4

Installation
Table 22 - YSD 072 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

225

250

275

300

RPM

kW

RPM

kW

RPM

kW

RPM

kW

Fan
RPM

kW

Fan
RPM

kW

-

-

820

0.54

859

0.60

896

0.66

932

0.72

968

0.78

1000

0.84

814

0.58

854

0.64

891

0.71

928

0.78

963

0.84

996

0.91

1028

0.98

853

0.70

890

0.77

926

0.84

961

0.91

994

0.98

1027

1.05

1058

1.13

0.77

894

0.84

929

0.91

963

0.98

996

1.06

1028

1.14

1060

1.22

1090

1.29

0.93

936

1.01

970

1.08

1003

1.16

1035

1.24

1066

1.32

1096

1.40

1125

1.48

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

3260

-

-

-

-

-

-

-

-

-

-

3670

-

-

-

-

-

-

-

-

-

-

4080

-

-

-

-

-

-

-

-

814

0.64

4490

-

-

-

-

-

-

815

0.70

857

4890

-

-

-

-

818

0.77

860

0.85

899

350

200

kW

m3/h

325

175

RPM

375

m3/h

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

3260

1033

0.90

1063

0.96

1094

1.03

3670

1061

1.05

1091

1.12

1121

1.18

4080

1090

1.21

1118

1.28

1149

1.36

4490

1120

1.38

1150

1.46

1178

1.54

4890

1155

1.57

1181

1.66

1210

1.75

Table 23 - YSH 072 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

250

275
Fan
RPM

Fan
RPM

kW

0.84

1059

0.92

0.98

1087

1.06

1.15

1119

1.23

1.34

1153

1.42

1192

1.64

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

3260

-

-

-

-

-

-

-

-

-

-

824

0.52

866

0.59

907

0.65

947

0.71

986

0.78

1023

3670

-

-

-

-

-

-

-

-

826

0.57

865

0.64

903

0.71

943

0.78

979

0.84

1017

0.91

1053

4080

-

-

-

-

-

-

836

0.64

874

0.70

911

0.77

947

0.84

982

0.92

1017

1.00

1051

1.07

1085

4490

-

-

-

-

847

0.72

888

0.80

924

0.86

959

0.93

993

1.00

1026

1.08

1058

1.17

1089

1.25

1122

4890

818

0.74

858

0.81

900

0.88

940

0.97

977

1.05

1010

1.13

1042

1.20

1073

1.27

1104

1.36

1133

1.45

1163

1.54

325

350
Fan
RPM

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

300

kW

375

m3/h

Fan
RPM

kW

3260

1093

0.98

1126

1.06

1156

1.12

3670

1121

1.13

1153

1.21

1185

1.29

kW

Fan
RPM

kW

4080

1151

1.30

1182

1.38

1214

1.47

4490

1184

1.50

1215

1.59

-

-

4890

1221

1.72

-

-

-

-

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

23

Installation
Table 24 - YSD 090 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

4080

-

-

-

-

-

-

-

-

-

-

869

0.73

906

4590

-

-

-

-

-

-

-

-

887

0.85

922

0.92

958

RPM

kW

RPM

kW

RPM

200

kW

225

RPM

kW

0.80

941

0.99

991

250

275

RPM

kW

RPM

kW

0.87

976

0.94

1009

1.01

1.07

1024

1.14

1055

1.22

Fan
RPM

300

kW

Fan
RPM

1042

1.09

1073

1.17

1086

1.30

1117

1.39
1.65

kW

5100

-

-

-

-

865

0.89

905

0.98

943

1.06

979

1.15

1012

1.23

1044

1.31

1075

1.39

1105

1.47

1134

1.56

1163

5610

858

0.97

894

1.05

929

1.13

965

1.22

1001

1.32

1036

1.41

1068

1.50

1099

1.59

1129

1.68

1157

1.77

1185

1.86

1212

1.95

6120

930

1.24

963

1.33

995

1.42

1028

1.51

1061

1.61

1093

1.71

1126

1.82

1157

1.92

1185

2.02

1212

2.11

1239

2.21

1265

2.31

325

m3/h

Fan
RPM

350

kW

Fan
RPM

375

kW

Fan
RPM

kW

4080

1104

1.24

1134

1.32

1163

1.40

4590

1146

1.47

1174

1.56

1203

1.65

5100

1191

1.74

1218

1.83

1245

1.92

5610

1238

2.04

1265

2.14

1292

2.24

6120

1290

2.40

1316

2.51

1340

2.61

Table 25 - YSH 090 Available static pressure
External Static Pressure (Pa)
25

50

75

100

m3/h

RPM

kW

RPM

kW

4080

-

-

-

-

4590

-

-

-

-

5100

869

0.87

910

0.94

950

1.03

5610

949

1.14

985

1.22

1023

1.30

6120

1029

1.47

1061

1.55

1096

1.64

1130

325

m3/h

Fan
RPM

350

kW

Fan
RPM

RPM

125

150

kW

RPM

kW

RPM

kW

RPM

kW

-

-

851

0.67

889

0.73

926

880

0.80

919

0.88

955

0.94

989

989

1.12

1023

1.21

1058

1.40

1092

1.51

1.74

1162

1.85

175

200

225

250

275

kW

Fan
RPM

RPM

kW

0.80

962

1.01

1022

1056

1.28

1086

1.36

1116

1.43

1146

1.52

1175

1.62

1124

1.60

1154

1.68

1182

1.77

1210

1.85

1237

1.94

1193

1.96

1222

2.06

1250

2.16

1276

2.25

1302

2.34

1327

300
Fan
RPM

kW

1.19

1134

1.26

1.43

1180

1.52

RPM

kW

RPM

kW

RPM

kW

0.88

997

0.95

1031

1.03

1067

1.11

1101

1.09

1054

1.17

1086

1.26

1117

1.35

1148
1204

1.72

1232

1.81

1264

2.04

1290

2.14

2.43

1352

2.53

375

kW

Fan
RPM

kW

4080

1166

1.34

1197

1.42

1229

1.50

4590

1210

1.60

1241

1.69

1269

1.78

5100

1260

1.91

1287

2.00

1316

2.10

5610

1316

2.25

1342

2.36

1367

2.46

6120

1376

2.64

1401

2.75

1425

2.87

Standard drive
Oversize drive

24

Note : Data includes pressure drops for standard filters and wet coils

RT-SVX20A-E4

Installation
Table 26 - YSD 102 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

4620

-

-

-

-

-

-

-

-

-

-

5200

-

-

-

-

-

-

-

-

-

-

5780

-

-

-

-

-

-

-

-

805

1.00

6350

-

-

-

-

792

1.00

823

1.10

854

1.21

6930

786

1.03

818

1.14

848

1.24

877

1.34

905

1.46

933

325

m3/h

Fan
RPM

350

kW

Fan
RPM

375

kW

Fan
RPM

400

kW

Fan
RPM

RPM

Fan
RPM

200

kW

RPM

kW

-

-

787

794

0.92

827

837

1.11

884

1.33
1.58

425

kW

175

Fan
RPM

kW

275
Fan
RPM

kW

Fan
RPM

0.85

819

0.96

1.02

859

1.13

869

1.22

900

1.33

929

1.44

959

1.56

986

1.68

1011

1.80

914

1.45

943

1.57

971

1.69

999

1.81

1025

1.94

1051

2.06

961

1.71

988

1.84

1015

1.97

1041

2.10

1067

2.23

1092

2.36

Fan
RPM

kW

300

kW

475

RPM

250

RPM

450

kW

225

kW

RPM

kW

850

1.06

879

1.17

907

1.27

934

1.39

890

1.23

918

1.34

946

1.46

971

1.58

500

kW

Fan
RPM

kW

4620

960

1.50

987

1.62

1013

1.73

1038

1.85

1064

1.97

1087

2.09

1111

2.21

1134

2.34

5200

997

1.70

1023

1.83

1047

1.95

1070

2.08

1094

2.21

1117

2.34

1140

2.47

1163

2.60

5780

1037

1.93

1061

2.06

1085

2.19

1107

2.33

1130

2.46

1151

2.60

1174

2.75

1194

2.88

6350

1077

2.19

1100

2.32

1123

2.46

1147

2.61

1168

2.75

1189

2.89

1211

3.04

1231

3.19

6930

1117

2.50

1140

2.64

1164

2.78

1187

2.92

1208

3.07

1229

3.22

-

-

-

-

Table 27 - YSH 102 Available static pressure
External Static Pressure (Pa)
25

m3/h

50

RPM

kW

75

RPM

kW

100

RPM

kW

125

RPM

kW

150

RPM

kW

175

RPM

kW

RPM

200

kW

RPM

225

kW

250

RPM

kW

275

RPM

kW

Fan
RPM

kW

300
Fan
RPM

kW

4620

-

-

-

-

-

-

787

0.79

831

0.89

869

0.99

901

1.08

931

1.17

959

1.26

986

1.35

1011

1.43

1036

1.52

5200

-

-

-

-

798

0.88

841

1.00

883

1.11

923

1.23

958

1.35

989

1.45

1017

1.55

1045

1.65

1070

1.75

1094

1.85

5780

793

0.94

830

1.04

863

1.14

898

1.25

937

1.37

975

1.51

1011

1.64

1045

1.77

1075

1.89

1103

2.01

1128

2.12

1152

2.23

6350

865

1.23

899

1.34

930

1.45

961

1.56

994

1.68

1028

1.82

1063

1.96

1097

2.11

1129

2.26

1159

2.40

1186

2.53

1210

2.65

6930

937

1.57

970

1.70

999

1.81

1027

1.93

1055

2.05

1085

2.19

1118

2.34

1150

2.50

1181

2.66

1211

2.82

1239

2.97

1267

3.13

325

m3/h

Fan
RPM

4620
5200

350

375

1.61

1082

1.69

1104

1.78

1127

1.87

1149

1.96

1170

2.05

1191

2.14

1212

2.24

1.95

1139

2.05

1161

2.15

1182

2.24

1203

2.35

1222

2.44

1243

2.54

1262

2.64

kW

Fan
RPM

500

1117

kW

Fan
RPM

475

1059

kW

Fan
RPM

450

Fan
RPM

kW

Fan
RPM

425

kW

kW

Fan
RPM

400

kW

Fan
RPM

kW

5780

1176

2.34

1198

2.45

1219

2.56

1241

2.67

1261

2.78

1280

2.88

1299

2.99

1319

3.11

6350

1233

2.78

1256

2.90

1278

3.03

1298

3.15

1319

3.27

-

-

-

-

-

-

6930

1291

3.27

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

25

Installation
Table 28 - YSD 120 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

5440

-

-

-

-

-

-

-

-

-

-

-

-

6120

-

-

-

-

-

-

-

-

-

-

-

-

6800

-

-

-

-

-

-

-

-

913

1.48

941

1.60

969

1.73

7480

-

-

895

1.48

923

1.59

949

1.70

976

1.83

1003

1.96

1029

2.10

8160

939

1.75

967

1.87

992

1.99

1017

2.12

1042

2.24

1066

2.38

1090

2.52

1114

325

m3/h

Fan
RPM

5440
6120

350

kW

Fan
RPM

1027

1.86

1076

2.17

6800

1126

7480
8160

375

kW

Fan
RPM

1051

1.99

1100

2.30

2.53

1149

1176

2.96

-

-

400

425

Fan
RPM

kW

1.49

976

1.61

1001

1.73

1.78

1025

1.90

1052

2.03

1050

2.12

1076

2.26

1101

2.39

1104

2.53

1129

2.67

1153

2.81

1161

2.98

1184

3.14

1207

3.30

RPM

kW

RPM

kW

-

-

891

1.26

921

1.37

949

913

1.42

942

1.54

971

1.66

999

997

1.86

1024

1.99

1054

2.24

1079

2.38

2.67

1138

2.83

Fan
RPM

300

Fan
RPM

kW

475

Fan
RPM

kW

500

Fan
RPM

1075

2.12

1098

2.25

1120

2.38

1143

2.52

1166

1122

2.44

1145

2.58

1167

2.73

1188

2.87

1210

2.67

1172

2.81

1194

2.96

1216

3.12

1236

3.26

-

-

-

-

1200

3.11

1222

3.26

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

kW

275

RPM

450

kW

250

kW

kW

kW

Fan
RPM

RPM

225

Fan
RPM

kW

2.66

1189

2.80

3.02

1230

3.17

kW

Table 29 - YSH 120 Available static pressure
External Static Pressure (Pa)
25

m3/h

50

RPM

kW

75

RPM

kW

100

RPM

kW

RPM

125

kW

RPM

150

kW

RPM

175

kW

RPM

200

kW

RPM

225

kW

RPM

250

kW

RPM

275

kW

Fan
RPM

300

kW

Fan
RPM

kW

5440

-

-

-

-

-

-

-

-

924

1.28

962

1.40

998

1.52

1028

1.64

1055

1.74

1082

1.85

1107

1.95

1131

2.06

6120

-

-

-

-

921

1.37

955

1.49

992

1.63

1028

1.77

1063

1.91

1096

2.05

1126

2.19

1153

2.31

1178

2.43

1202

2.55

6800

943

1.57

973

1.68

1002

1.80

1031

1.92

1062

2.06

1096

2.21

1129

2.36

1161

2.52

1192

2.68

1222

2.84

1249

2.99

1273

3.13

7480

1031

2.06

1060

2.19

1086

2.32

1113

2.45

1139

2.57

1167

2.73

1198

2.90

1228

3.07

1257

3.24

-

-

-

-

-

-

8160

1119

2.58

1146

2.79

1171

2.93

1195

3.07

1219

3.21

1243

3.36

-

-

-

-

-

-

-

-

-

-

-

-

325

m3/h

Fan
RPM

350

kW

375

Fan
RPM

kW

400

Fan
RPM

kW

425

450

475

500

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

5440

1154

2.16

1176

2.27

1197

2.37

1218

2.47

1238

2.58

1257

2.68

1276

2.78

1296

2.89

6120

1224

2.67

1247

2.79

1268

2.91

1288

3.02

1308

3.14

1328

3.26

-

-

-

-

6800

1296

3.26

-

-

-

-

-

-

-

-

-

-

-

-

-

-

7480

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

8160

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Standard drive
Oversize drive

26

Note : Data includes pressure drops for standard filters and wet coils

RT-SVX20A-E4

Installation
Table 30 - WSD 060 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

m3/h

RPM

kW

RPM

kW

RPM

kW

RPM

kW

2720

-

-

-

-

-

-

-

-

-

-

3060

-

-

-

-

-

-

-

-

892

0.48

3400

-

-

-

-

-

-

904

0.55

945

0.60

3740

-

-

-

-

913

0.63

959

0.68

1001

4080

-

-

933

0.74

972

0.78

1014

0.84

1056

325

m3/h

Fan
RPM

350

kW

Fan
RPM

RPM

kW

RPM

175

200

225

250

275

300

RPM

kW

RPM

kW

Fan
RPM

kW

0.53

1014

0.58

1050

0.63

1085

0.62

1056

0.68

1093

0.74

1128

1061

0.75

1098

0.80

1135

0.86

0.85

1109

0.90

1143

0.96

1177

1.03

1160

1.09

1193

1.15

1225

kW

RPM

kW

RPM

kW

-

-

933

935

0.52

976

0.47

975

0.57

1016

985

0.65

1023

0.70

0.74

1038

0.80

1074

0.90

1094

0.97

1128

Fan
RPM

kW

0.68

1118

0.72

0.80

1160

0.86

1170

0.93

1203

1.00

1.01

1212

1.07

1244

1.14

1.20

1256

1.26

1287

1.32

375

kW

Fan
RPM

kW

2720

1151

0.78

1183

0.83

1214

0.88

3060

1192

0.91

1223

0.97

1252

1.02

3400

1235

1.06

1265

1.12

1295

1.19

3740

1276

1.21

1308

1.29

-

-

4080

-

-

-

-

-

-

Table 31 - WSH 060 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

m3/h

RPM

kW

RPM

kW

RPM

kW

2720

-

-

-

-

-

-

-

-

941

0.47

990

0.52

3060

-

-

-

-

-

-

937

0.52

992

0.58

1043

0.65

RPM

kW

RPM

kW

RPM

kW

175

RPM

200

225

kW

RPM

250

kW

RPM

275

kW

Fan
RPM

kW

RPM

1034

0.58

1077

0.64

1119

0.70

1158

0.75

1196

1088

0.71

1130

0.77

1169

0.83

1207

0.90

1244

300
Fan
RPM

kW

0.82

1231

0.88

0.96

1280

1.03

kW

3400

-

-

-

-

945

0.58

995

0.65

1045

0.72

1094

0.79

1141

0.86

1185

0.93

1224

1.00

1260

1.07

1295

1.14

1330

1.21

3740

901

0.60

958

0.67

1009

0.73

1057

0.80

1101

0.88

1146

0.95

1192

1.03

1235

1.11

1277

1.18

1314

1.26

-

-

-

-

4080

973

0.76

1026

0.84

1075

0.91

1120

0.98

1163

1.06

1204

1.14

1245

1.23

-

-

-

-

-

-

-

-

-

-

325

350

375

m3/h

Fan
RPM

kW

Fan
RPM

kW

Fan
RPM

kW

2720

1265

0.94

1298

1.00

1330

1.07

3060

1314

1.10

1346

1.16

1380

1.24

3400

1363

1.28

-

-

-

-

3740

-

-

-

-

-

-

4080

-

-

-

-

-

-

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

27

Installation
Table 32 - WSD 072 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

250

kW

Fan
RPM

kW

0.62

912

0.68

948

0.75

982

0.81

0.72

936

0.79

971

0.86

1004

0.93

0.83

961

0.91

995

0.98

1027

1.06

0.97

987

1.04

1021

1.12

1053

1.20

1018

1.20

1050

1.28

1081

1.36

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

3260

-

-

-

-

-

-

-

-

705

0.38

751

0.44

794

0.50

835

3670

-

-

-

-

-

-

-

-

736

0.47

779

0.53

821

0.59

860

4080

-

-

-

-

-

-

720

0.50

768

0.56

810

0.63

850

0.70

888

0.76

925

4490

-

-

-

-

709

0.53

753

0.60

799

0.67

843

0.75

882

0.82

919

0.89

954

4890

-

-

705

0.58

749

0.64

791

0.72

832

0.79

874

0.88

914

0.96

950

1.04

985

1.12

350

Fan
RPM

kW

3260

1015

3670

1037

4080

RPM

kW

0.56

874

0.65

898

Fan
RPM

kW

375

Fan
RPM

kW

0.87

1047

1.00

1069

1060

1.13

1091

4490

1085

1.28

4890

1112

1.44

m3/h

300

RPM

m3/h

325

275

Fan
RPM

kW

0.93

1079

0.99

1.07

1099

1.14

1.21

1121

1.29

1115

1.36

1145

1.45

1140

1.53

1170

1.62

Table 33 - WSH 072 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

m3/h

RPM

kW

RPM

kW

3260

-

-

-

-

-

-

-

-

750

0.42

794

0.48

3670

-

-

-

-

695

0.40

745

0.46

789

0.51

830

0.58

4080

-

-

-

-

737

0.49

787

0.57

831

0.64

870

0.70

908

0.76

944

4490

-

-

740

0.55

781

0.61

828

0.68

872

0.77

911

0.84

948

0.91

983

4890

761

0.64

795

0.70

828

0.76

871

0.83

913

0.91

953

1.00

990

1.08

1023

1.15

325

350
Fan
RPM

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

250

kW

275

300

kW

Fan
RPM

963

0.73

1002

987

0.86

1025
1051

1.07

1085

1.15

1081

1.23

1113

1.31

1.40

1147

1.49

kW

RPM

RPM

838

0.55

882

0.61

923

0.67

871

0.65

910

0.72

950

0.79

0.84

980

0.92

1015

0.99

0.98

1016

1.06

1049

1.14

1055

1.23

1086

1.31

1117

Fan
RPM

kW

0.80

1038

0.87

0.93

1060

1.00

kW

375

m3/h

Fan
RPM

kW

3260

1073

0.94

1107

1.01

1140

1.09

3670

1096

1.07

1129

1.15

1162

1.23

4080

1118

1.23

1152

1.31

1185

1.39

4490

1146

1.40

1178

1.49

1208

1.57

4890

1178

1.59

1206

1.68

1236

1.77

kW

Fan
RPM

kW

Standard drive
Oversize drive

28

Note : Data includes pressure drops for standard filters and wet coils

RT-SVX20A-E4

Installation
Table 34 - WSD 090 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

225

m3/h

RPM

kW

RPM

kW

RPM

kW

4080

-

-

-

-

-

-

-

-

768

0.56

810

0.63

850

0.70

888

4590

-

-

-

-

-

-

763

0.63

807

0.70

850

0.78

889

0.85

926

5100

-

-

-

-

770

0.71

810

0.78

849

0.86

890

0.95

929

1.03

967

5610

-

-

782

0.83

823

0.90

861

0.97

897

1.05

933

1.12

969

1.23

1006

6120

798

0.94

838

1.04

876

1.12

913

1.20

947

1.28

980

1.37

1013

1.47

1047

1.57

325

m3/h

Fan
RPM

4080
4590

350

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

250

RPM

kW

0.76

925

0.93

961

1.12
1.33

275

300

Fan
RPM

kW

0.91

995

0.98

1027

1.06

1.08

1027

1.15

1059

1.23

1034

1.28

1065

1.36

1095

1.45

1074

1.52

1104

1.60

1134

1.70

1113

1.77

1144

1.88

1173

1.98

RPM

kW

0.83

961

1.00

995

1000

1.20

1041

1.42

1080

1.67

Fan
RPM

kW

375

kW

Fan
RPM

1060

1.13

1091

1.21

1121

1.29

1091

1.32

1121

1.40

1151

1.49

5100

1125

1.53

1154

1.62

1183

1.71

5610

1163

1.79

1191

1.88

1217

1.97

6120

1202

2.08

1229

2.17

1256

2.27

kW

Fan
RPM

kW

Table 35 - WSH 090 Available static pressure
External Static Pressure (Pa)
25

50

75

100

125

150

175

200

m3/h

RPM

kW

4080

-

-

-

-

-

-

787

0.57

831

0.64

870

0.70

908

4590

-

-

753

0.59

792

0.65

839

0.72

882

0.80

922

0.88

958

5100

789

0.71

822

0.78

853

0.84

892

0.91

935

0.99

974

1.08

1011

5610

862

0.93

892

1.01

921

1.08

951

1.15

988

1.22

1026

1.31

1062

6120

934

1.20

963

1.28

990

1.35

1016

1.43

1045

1.51

1079

1.59

1115

1.69

325

kW

350

Fan
RPM

kW

4080

1118

4590

1153

5100
5610
6120

1291

m3/h

RPM

RPM

kW

RPM

kW

RPM

kW

RPM

kW

RPM

kW

225

RPM

kW

0.76

944

0.95

992

1.18
1.42

250

275

RPM

kW

0.92

1015

0.99

1.10

1058

1.18

Fan
RPM

300

kW

Fan
RPM

1051

1.07

1085

1.15

1090

1.27

1122

1.36

1.49

1165

1.59

1.78

1214

1.86

1266

2.21

RPM

kW

0.84

980

1.02

1026

1044

1.25

1076

1.33

1106

1.41

1136

1096

1.52

1129

1.61

1158

1.69

1187

1148

1.80

1180

1.91

1210

2.02

1239

2.12

kW

375

Fan
RPM

kW

Fan
RPM

kW

1.23

1152

1.45

1185

1.31

1185

1.39

1.53

1216

1.62

1194

1.68

1242

1.96

1223

1.78

1251

1.88

1269

2.06

1296

2.17

2.30

1317

2.39

1343

2.49

Standard drive
Oversize drive

RT-SVX20A-E4

Note : Data includes pressure drops for standard filters and wet coils

29

Installation
Electrical connection

Over current protection

The electric panel is located in the
unit compressor section. Remove
the compressor access panel. The
unit is designed to run with 400 V
+/- 5%/50 Hz/ 3 ph.

The branch circuit feeding the unit
must be protected in accordance
with national or local codes and
maximum unit amps indicated in
Table 36.

Factory supplied disconnect switch
(option)

Power wiring

The disconnect switch is factory
mounted. It is located in the
compressor section. Mount the
disconnect switch onto the exterior
of the unit, between the condenser
coil and the electrical panel (near
the unit top corner). Wire the
disconnect switch from the power
terminal block in the panel to the
disconnect switch with the wire
bundle provided by following the
electrical diagram found in the unit.

The unit's power supply must be
provided by 4-wire cable with crosssectional areas complying with
legislation.
The power supply cables must be
laid in leak-tight pipes and pass
through the bottom of the electric
panel for units without electric
heaters and through the heat
section when electric heater option
is selected. The cables must not be
taut.

Appropriate connectors must be
provided. Flexible pipe supports are
required to prevent noise
transmission in the building's
structure. Ensure all the connections
are tightened.
Note:
1. Earthing must be executed in
compliance to national and local
legislation.
2. The machines are designed for a
short-circuit current of 10 kA. In
the event of a higher application,
contact your local sales office.
Compressor electrical phasing
Proper phasing of the electrical
power wiring is critical for proper
operation and reliability of the scroll
compressor and fans.
Proper rotation of the scroll
compressor must be established
before the unit is started. This is
accomplished by confirming that
the electrical phase sequence of the
power supply is correct. The motor
is internally connected for clockwise
rotation with the inlet power supply
phased A,B,C.
The direction of rotation may be
reversed by interchanging any two
of the line wires. It is this possible
interchange of wiring that makes a
phase sequence indicator necessary
if the operator is to quickly
determine the phase rotation of the
compressor motor.

Figure 13 - Power supply

1
1 = Power supply

30

RT-SVX20A-E4

Installation
The "ABC" indicator on the face of
the phase indicator will glow if
phase is ABC for terminals L1, L2,
L3.

WARNING! Disconnect all power,
including remote disconnects, and
discharge all capacitors before
servicing.

IMPORTANT! After completion of
wiring, check all electrical
connections, and ensure all
connections are tight. Replace and
secure all electrical box covers and
access doors before leaving unit or
connecting power to circuit
supplying the unit.

Follow proper lockout/tagout
procedures to ensure the power
cannot be inadvertently energized.
After power is removed, allow
4 minutes for capacitors to
discharge. Verify with an
appropriate voltmeter that all
capacitors have discharged. Failure
to disconnect power and/or
discharge capacitors before
servicing could result in death or
serious injury. For additional
information regarding the safe
discharge of capacitors, see Trane
Service Bulletin PROD-SVB06A.

CAUTION! Units with scroll
compressors are not equipped with
crankcase heaters.

Table 36 - Unit wiring
Standard Supply Fan Motor
Unit Model
and size

Main power
supply
(V/Ph/Hz)

Oversized Supply Fan Motor

Minimum Circuit
Ampacity
(A)

Maximum Overcurrent
Protective Device (Fuse
or Circuit Breaker)
(A)

Minimum circuit
ampacity
(A)

Maximum Overcurrent
Protective Device (Fuse
or Circuit Breaker)
(A)

32

Without Electric heat option
TSD/TSH 060

400/3/50

18,2

32

19,3

TSD/TSH 072

400/3/50

24,4

32

25,5

32

TSD/TSH 090

400/3/50

26,2

40

27,2

40

TSD/TSH 102

400/3/50

28,3

40

29,3

40

TSD/TSH 120

400/3/50

32,6

40

32,6

40

YSD/YSH 060

400/3/50

18,2

32

-

-

YSD/YSH 072

400/3/50

24,4

32

25,5

32

YSD/YSH 090

400/3/50

26,2

40

27,2

40

YSD/YSH 102

400/3/50

28,3

40

29,3

40

YSD/YSH 120

400/3/50

32,6

40

32,6

40

WSD/WSH 060

400/3/50

20,1

32

21,2

32

WSD/WSH 072

400/3/50

23,1

32

24,2

32

WSD/WSH 090

400/3/50

26,2

40

27,2

40

TSD/TSH 060

400/3/50

26,4

50

27,5

50

TSD/TSH 072

400/3/50

37,8

50

38,9

50

TSD/TSH 090

400/3/50

39,2

50

40,2

50

TSD/TSH 102

400/3/50

50,1

63

51,1

63

With Electric heat

TSD/TSH 120

400/3/50

51,8

63

51,8

63

WSD/WSH 060

400/3/50

40,8

50

41,9

50

WSD/WSH 072

400/3/50

55,2

63

56,3

63

WSD/WSH 090

400/3/50

58,3

63

59,3

63

RT-SVX20A-E4

31

Installation
Table 37 - Compressor and condenser motors
Compressor motor

Condensor fan motor

Number
of
motors

Main
power
supply
(V)

Number
of
phases

Motor
HP
(kW)

TSD/TSH 060

1

400

3

4,2

10,3

74

1

400

1

TSD/TSH 072

1

400

3

5,6

13,7

95

1

400

1

TSD/TSH 090

1

400

3

6,2

14,3

100

1

400

1

TSD/TSH 102

2

400

3

4.5 / 2.8

10 / 7.5

74 / 48

2

400

TSD/TSH 120

2

400

3

4.5 / 3.5

10.7 / 9.2

74 / 62

2

YSD/YSH 060

1

400

3

4,2

10,3

74

YSD/YSH 072

1

400

3

5,6

13,7

YSD/YSH 090

1

400

3

6,2

14,3

YSD/YSH 102

2

400

3

4.5 / 2.8

10 / 7.5

Unit Model
and size

Rated
amps
(A)

Locked
rotor
amps
(A)

Rated
amps
(A)

Locked
rotor
amps
(A)

0,3

1.0

2,8

0,56

3.0

7,1

0,56

3.0

7,1

1

0,56

3.0

7,1

400

1

0,56

3.0

7,1

1

400

1

0,3

1.0

2,8

95

1

400

1

0,56

3.0

7,1

100

1

400

1

0,56

3.0

7,1

74 / 48

2

400

1

0,56

3.0

7,1

Number
of
motors

Main
power
supply
(V)

Number
of
phases

Motor
HP
(kW)

YSD/YSH 120

2

400

3

4.5 / 3.5

10.7 / 9.2

74 / 62

2

400

1

0,56

3.0

7,1

WSD/WSH 060

1

400

3

4,5

11,8

74

1

400

1

0,3

1

2,8

WSD/WSH 072

1

400

3

5

12,6

101

1

400

1

0,56

3

7,1

WSD/WSH 090

1

400

3

6,2

14,3

100

1

400

1

0,56

3

7,1

Rated
amps
(A)

Locked
rotor
amps
(A)

Table 38 - Supply fan motor
Standard supply fan motor

Unit Model
and size

Number
of
motors

Main
power
supply
(V)

Number
of
phases

Motor
HP
(kW)

Oversized supply fan motor

Rated
amps
(A)

Locked
rotor
amps
(A)

Number
of
motors

Main
power
supply
(V)

Number
of
phases

Motor
HP
(kW)

TSD/TSH 060

1

400

3

1,1

3,2

25,3

-

-

-

-

-

-

TSD/TSH 072

1

400

3

1,1

3,2

25,3

1

400

3

1,5

4,3

36,4

TSD/TSH 090

1

400

3

1,5

4,3

36,4

1

400

3

2,2

5,3

57.0

TSD/TSH 102

1

400

3

1,5

4,3

36,4

1

400

3

2,2

5,3

57.0

TSD/TSH 120

1

400

3

2,2

5,3

57.0

-

-

-

-

-

-

YSD/YSH 060

1

400

3

1,1

3,2

25,3

-

-

-

-

-

-

YSD/YSH 072

1

400

3

1,1

3,2

25,3

1

400

3

1,5

4,3

36,4

YSD/YSH 090

1

400

3

1,5

4,3

36,4

1

400

3

2,2

5,3

57.0

YSD/YSH 102

1

400

3

1,5

4,3

36,4

1

400

3

2,2

5,3

57.0

YSD/YSH 120

1

400

3

2,2

5,3

57.0

-

-

-

-

-

-

WSD/WSH 060

1

400

3

1,1

3,2

25,3

-

-

-

-

-

-

WSD/WSH 072

1

400

3

1,1

3,2

25,3

1

400

3

1,5

4,3

36.4

WSD/WSH 090

1

400

3

1,5

4,3

36,4

1

400

3

2,2

5,3

57.0

32

RT-SVX20A-E4

Controls
Control wiring
The control circuit is 24 V AC. Unit
includes a 400/24 V transformer.
WARNING! The unit disconnect
switch must be opened and locked
open. Risk of injury and
electrocution.

CAUTION! The unit 24 V transformer
must not be used to power
accessories mounted on site, other
than those proposed by Trane.
Unit controlled by thermostat

Figure 14 - Thermostat wiring

J7

J6

RT-SVX20A-E4

33

Controls
Trane THS01,THS02, THP01 and
THP02 Thermostats are directly
connected to RTRM board
(J7 connector).
Trane THS03 and THP03 thermostats
are directly connected to RTRM
board (J6 connector).
Install the electrical link between the
thermostat (thermostat terminal
strip) and the unit (J6 or
J7 connector) in compliance with
the interconnection diagram. The
low voltage wiring must not be laid
in the same pipes as the power
cables.
The sizes and lengths of the
thermostat connection wires are
given in Table 39. The total
resistance of these control cables
must not exceed 5 ohms. If the
resistance exceeds this value the
thermostat may not operate with
the same precision.
Table 39 - Zone sensor wire and
maximum length

34

Wire size
(mm²)

Maximum
wire lengh
(m)

0,33

45

0,5

76

0,75

115

1,3

185

2

300

Unit controlled by BAS
Each unit must be equipped with a
TCI-R board. A communication bus
(twisted shielded pair) must link
each TCI-R to the Trane Roof Top
Manager (RTM) or to the
communication gateway (in the
case of an external BAS). Connect
one temperature sensor to each
unit. LonTalk® communication
interface LTCl-R board allows ICS
communication between a
ReliaTel™ unit and LonTalk®
communication applications.
Unit controlled by Tracker™
supervisor
The units must also be equipped
with the TCI-R communication
board. One remote sensor is
required on each unit for a constant
flow volume. In the case of a
variable flow installation
(VariTrac™) these sensors must not
be installed. A twisted shielded pair
must be used for the
communication link. The main
functions of the Tracker™ supervisor
are control of setpoints, timetable
management (Programming) and
display of faults. For more details
refer to the supervisor
documentation.

RT-SVX20A-E4

Controls
CO2 sensors
Wall-mounted and duct-mounted
CO2 sensors

The CO2 sensor is designed to
operate with a nominal 24 Vac
supply. The power supply should
maintain the voltage between 20 to
26 Vac.

Power supply requirements
CAUTION! Make sure that you
connect the power wire only to the
24V terminal. Connecting the power
wire to the output terminal may
result in equipment damage.

Table 41 - CO2 sensor wire size
Wire size
(mm²)

Maximum
wire lengh
(m)

0,25

50

0,5

100

1

200

Table 40 - Specifications
Wall-mounted
0-2000 ppm

Measuring range CO2

Accuracy at 25°C

Duct-mounted

< +/- [40 ppm CO2 + 3% of
reading]
(included repeatability and
calibration uncertainty)

< +/- [30 ppm CO2 + 2% of
reading]
(included repeatability and
calibration uncertainty)

Non-linearity

< 1.0% full scale

Temperature dependence of output

0.3% full scale/°C

Long-term stability

< 5.0% full scale/ 5 years

Recommended calibration interval

5 years

Response time
Operating temperature

1 minute (0-63%)
15-35°C

Storage temperature

-5-45°C
-20-70°C

Humidity range

0-85% relative humidity

Airflow range

0-10 m/s)

Output signals (jumper selectable)

0-10 Vdc

Resolution of analog outputs

10 ppm CO2

Recommended external load

Current output: max 500
Voltage output: min. 1000

Power supply

Nominal 24 Vac

Power consumption

< 5 VA

Warm-up time
Dimensions (mm)

RT-SVX20A-E4

< 15 minutes
108 x 80 x 36

80 x 80 x 200

35

Controls
Wiring the wall-mounted CO2
sensor
DVC setpoint potentiometer on
economizer module can be adjusted
as follows:
0% - 500ppm, 50% - 1000 ppm,
100% - 1500ppm
The outside air damper will
modulate from minimum position
setting to up to 100% while
attempting to maintain the CO2
setpoint.

Wiring the duct-mounted CO2
sensor
1. Connect the common wire from
the controller to the ground
terminal (terminal 0) (Figure 16).
2. For voltage output, connect the
signal wire to terminal V.
3. Connect the power according to
the guidelines in Power supply
requirements.

Figure 15 - Wall-mounted CO2 sensor wiring

Figure 16 - Terminal connections and LED locations

2
3
1

1
2
3
4

36

=
=
=
=

4

Outer jumper
Power terminal
Ground terminal
Output terminals

RT-SVX20A-E4

Controls
Mounting the wall-mounted sensor
1. Select a proper location in the
room to mount the CO2 sensor.
Look for an interior wall with
good air circulation,
approximately 1.4 m from the
floor.
2. Remove the back plate from the
sensor and thread the power
wires and output signal wire
through the hole in the back
plate (Figure 17).
For surface wiring, make cutouts with pliers to the thinner
section of the upper or lower
edge of the back plate and to
thread the wires through.
3. Mount the back plate to the wall
with screws. Note that the arrow
on the back plate shows the
mounting direction.
4. On the circuit board, use the two
jumpers next to the terminal
block to set up the type of output
(0-10 Vdc) (Figure 18).
5. Insert the circuit board in the
back plate. (Figure 18.) Do not
press the metal tube while
inserting the circuit board.
6. Connect the power and signal
wires to the screw terminals of
the circuit board. Figure 16
shows the terminal locations.

Figure 17 - Wall-mounted CO2 sensor

1

1 = Thinner section for cut-out

Figure 18 - Jumper settings

RT-SVX20A-E4

37

Controls
Mounting the duct-mounted CO2
sensor
1. Select a proper location on the
duct to mount the CO2 sensor.
2. Drill a 22-25 mm hole in the
mounting surface for sensor
insertion (Figure 19).
3. Attach the mounting plate to the
duct wall with four screws.
4. Insert the sensor through the
mounting plate, adjusting the
depth for optimal air sensing.

Figure 19 - Duct-mounted CO2 sensor
diameter
15/8 in. (42 mm)
7 /8

in. (22 mm)

CO2 sensor maintenance
This CO2 sensor has excellent This
CO2 sensor has excellent stability
and requires no maintenance. In
most environments the
recommended calibration interval is
five years. A trained service
technician can use a portable CO2
meter to certify sensor calibration.
If, when checking the sensor, the
reading differs too much from the
reference value, the sensor can be
recalibrated in the field. A
calibration kit, software, and
calibration gases are required. If
certified accuracy is required, the
sensor must be calibrated against
accurate and traceable calibration
gases in a laboratory. Consult Trane
BAS for further details.

15/8 in.
(42 mm)

Figure 20 - Duct-mounted CO2 sensor insertion depth

21/2 in. (64 mm)

38

31/8 - 51/2 in. (80 - 140 mm )

RT-SVX20A-E4

Controls
Remote potentiometer
To install the remote potentiometer,
cut the jumper WL on the
economizer ECA board, and connect
the wires to J11 and J12.

Note: This potentiometer allows to
adjust the permanent fresh air
intake from 0 to 50%.
0 W corresponds to closed fresh air
damper.
270 W corresponds to 50% open
fresh air damper.

Figure 21 - Remote potentiometer dimensions

Figure 22 - Remote potentiometer wiring

1 = Remote potentiometer
2 = ECA Board
WH = White wire
RD = Red Wire
BU = Blue wire
_____ Factory wiring
------- Field wiring

RT-SVX20A-E4

39

Controls
Fire thermostat
There are two sensors in the fire
thermostat Kit: Sensor X1310004001 is factory-set to open at 57°C,
Sensor X13100040-02 is set to open
at 115°C.
Sensors are mounted directly in the
ductwork. They should be installed
where elements can respond
quickly to air temperature changes.
If not possible, the sensor may be
installed on a suitable bracket so
the air is drawn across the element.
Sensor X13100040-01 has to be
mounted in the return air duct.
Sensor X13100040-02 has to be
mounted in the supply air duct.

Note: Do not permit element guard
to touch internal parts. Do not
locate sensor where the air
circulation is restricted by baffles.
At the selected location, cut a hole
to clear element guard and drill
holes for mounting screws
according to Figure 23. Connect
wires according to Figure 24.

Figure 23 - Duct mounting of fire
thermostat

Figure 24 - Connection of fire thermostat
with TCI board

1
2
1 = Field-supplied emergency stop
device
2 = Remove factory-supplied jumper

1 = Fire thermostat
2 = Hole in the duct

40

RT-SVX20A-E4

Controls
Clogged filter detector

Smoke detector

This device is mounted in the
indoor fan section. The sensor
measures the difference in pressure
before and after the filter section.
The information is sent to the THP03
thermostat, to a Tracker™ or to a
BMS. The setting range is 40 to
300 Pa.

This device is used to detect smoke
in the air stream. It includes a
factory mounted detector connected
to a central panel, both fitted in the
fan section.
When smoke is detected, it shuts off
the unit. A dry contact is available
on the control panel for a remote
default.

High temperature safety
thermostat
This additional safety device is a
manual reset thermostat for gas
fired units (YKD/YKH), required
mainly by the French ERP
regulation. It is located in the gas
burner section. It stops the gas
burner and the supply air fan when
the supply air temperature rises to
120°C.
Figure 25- Clogged filter sensor

Remote fault relay
2

1
3

This is a factory mounted relay used
to send alarm signals (dry contact)
to a local BMS or a local control
panel. With this relay, the
compressor, heating, fan and power
supply alarm output signals from
the controller are reported to a
single dry contact.

4

1
2
3
4

=
=
=
=

Secure with one screw
Route wire harness between coil blockoff and roof rib
Secure with pop-in wire tie
Remove filter if necessary

RT-SVX20A-E4

41

Controls
"THS" are non programmable
thermostats, "THP" are
programmable.

Thermostats
6 thermostats are available:
THS01/THP01, THS02/THP02 and
THS03/THP03.

01 and 02 series are conventional
thermostat, 03 series are dedicated
to the controller.

Table 42 - Thermostat features
THS01

THP01

THS02

THP02

THS03

THP03

non-programmable

X

-

X

-

X

-

programmable

-

X

-

X

-

X

electronic

X

X

X

X

X

X

Reliatel

Reliatel

unit control type design

electromech.

electromech.

electromech.

electromech.

interface card needed

-

-

-

-

-

-

for Cooling Only units

X

X

-

-

X

X

for Heat Pump units

-

-

X

X

X

X

for Gas Fired units

X

X

-

-

X

X

Cooling stages

2

2

2

2

2

2

auxiliary heating stages
(elec. heater, HWC )

2

2

1

1

2

2

none

none

1

1

1

1

X

X

X

X

-

X

heating stages
(heat pump mode)
liquid crystal display

Note: thermostats are powered up by the rooftop control (24V)

42

RT-SVX20A-E4

Controls
Other accessories available
Remote temperature sensor to be
used with THS/THP 01-02.
TZS01: Remote room temperature
sensor to be used with THS/THP 03,
Tracker or Varitrac systems.
DTS: Duct temperature sensor to be
used with THS/THP 03.
TZS02: Remote room temperature
sensor with adjustable thumwheel
setpoint to be used with Tracker or
Varitrac systems.
TZS04: Room temperature sensor
with adjustable thumbwheel and
override button, to be used with
Tracker or Varitrac systems.
Refer to separate documentation for
more information.

RT-SVX20A-E4

Communication Interfaces
TRANE Communication Interface
(TCI-R) board
This is an electronic board, factorymounted in the main control panel,
needed to allow communication
between a TRANE Integrated
Comfort system (TRACKER or
Varitrac CCP2) and the unit. (COM3COM4)
LON Communication Interface
(LCI-R) board
This is an electronic board, factorymounted in the main control panel,
needed to allow communication on
a LonTalk® Network at the unit level.
LonTalk® Communication Interface
(LCI-R) board allows Voyager units
to communicate on a LonTalk®
Network at the unit level. Network
variables are based on the
LonMark®. Space Comfort Controller
Functional Profile Template. The
LCIV uses a Free Topology
transceiver FTT-10A. The FTT-10A
transceiver supports non-polarity
sensitive, free topology wiring,
allowing the system installer to use
star, bus, and loop architecture. The
LCI-V can also be connected to an
optional High Temperature Limit
Switch if installed with the rooftop
unit. For more information, see
attached manual LTCI-IN-1.

43

Unit Options
Hot water coil
(Down flow units only)
In order to prevent water to freeze
up in the coil during unoccupied
period or shutdown limited period,
a thermostat opens when there is a
risk of freeze-up. The services of a
water treatment specialist are
recommended if water used can
cause scaling deposits or erosion.
Insulate all the water piping likely to
be exposed to freezing
temperatures in order to avoid
freeze up of the coil and heat
losses. The water distribution
network must be fitted with vents in
places where air is likely to be
trapped.

The hot water coil is factory
mounted in the discharge section.
Two holes are provided to connect
the hot water coil. They are located
at the base of the unit. Remove the
central panel to access the coil,
using an 8 mm wrench (the bolts
are located on the bottom part of
the panels). The tubes for entering
and leaving water are equipped
with a threaded female connector.
Water connection inlet/outlet:
1 ¼" ISO R7.
Installation and connection
In order to prevent water to freeze
up in the coil during unoccupied
period or shutdown limited period,
it is recommended to use ethylene
glycol. The services of a water
treatment specialist are
recommended if water used can
cause scaling deposits or erosion.
Insulate all the water piping likely to
be exposed to freezing
temperatures in order to avoid
freeze up of the coil and heat
losses. The water distribution
network must be fitted with vents in
places where air is likely to be
trapped.
Table 43 - Ethylene glycol percentage

Figure 26 - Hot water coil connections

44

Ethylene glycol
percentage

Freezing point

(%)

(°C)

10

-4

20

-10

RT-SVX20A-E4

Unit Options
Electric Heater

Soft Starter

Electric heaters are fitted on the fan
discharge.

The soft starter is used to achieve a
progressive supply fan start and a
reduced starting current as well as
the motor starting torque. This
option is well adapted for textile
duct applications. It is factory
installed in the main control panel.

Heaters have two heating stages
and provided with two types of
overheat thermostats:
• Automatic reset thermostats
which stop the electric heater
when the air temperature rises to
76°C. Automatic reset at 60°C. No
alarm output available.
• The manual reset thermostat
which stop the unit when the air
temperature rises to 120°C. No
alarm output available.

The soft starter gradually increases
the voltage of the supply fan motor
until it reaches full line voltage.
The starting time can be adjusted
from 0 to 40 seconds but the soft
starter is factory set to the
maximum starting time value,
40 seconds.

Figure 27 - Soft starter

1

6

5

4

3
1
2
3
4
5
6

RT-SVX20A-E4

2

= Three phase mains connections
= Motor connections
= Settings
= Status outputs
= Controls
= LEDs

45

Unit Options
This option includes for the hood
itself, a wire mesh and a slidable
damper.

0 - 25% fresh air hood
The 0-25% fresh air hood allows to
introduce fresh air into the unit.

The slidable damper has to be
adjusted manually by removing the
screws and sliding it off up or down
(Figure 28).

This is a manual device fitted on the
back of the unit, sized for a
maximum of 25% of the nominal
rooftop air flow.

The amount of fresh air introduced
is then permanently fixed.

210

H

Figure 28 - 0-25% manual fresh air hood

5
58

1

3

485

2

1 = Intake hood
2 = Wire mesh
3 = Slidable damper

46

RT-SVX20A-E4

Unit Options
Barometric relief

This option includes exhaust hoods
and gravity dampers located in the
return air section. When the
pressure of the building increase,
the gravity dampers open and
relieve air to the outside.

The barometric relief allows to
minimize overpressure in the
building caused by the introduction
of fresh air. This option is typically
installed when fresh air intake is
below 25% of the nominal air flow
and when the return air pressure
drop is below 25Pa.

If the return air duct pressure drop
is higher than the building
overpressure, the gravity dampers
will not open.
If the return air duct pressure drop
is lower than the building
overpressure, the gravity dampers
will open and relieve air outside of
the building.

Figure 29 - Economizer flow chart with barometric relief

S
R

S
E
R
F
Downflow version

F
Horizontal flow version

R = return
S = supply
F = fresh air
E = exhaust

RT-SVX20A-E4

47

Operation
Operation with a
conventional thermostat
The ReliaTel module has
conventional thermostat
connections as well as Zone Sensor
Module connections. When a
conventional thermostat is
controlling the unit, operation
differs as follows:
• Supply Air Tempering feature is
not available. If outdoor air is
being introduced through the
equipment, discharge air
temperature may be cold when
not actively heating.
• Proportional Integral (PI) control
is not available.
• Zone Sensor Diagnostics are
only available on the RTRM
module on the J6 terminals,
instead of at the Zone Sensor in
the space.
• Intelligent Fall-Back is not
available. If a failure occurs in
the device controlling the
equipment, operation will cease.
• Heat Pump Smart Recovery and
Smart Staging is not available.
Heat Pump operation becomes
more costly unless the generic
control being applied can
accomplish this.
• Remote Sensing Capabilities are
not available on most
mechanical thermostats.
• Space Temperature Averaging
capabilities are not available on
most mechanical thermostats.
• 27½ to 50 VAV - Conventional
thermostat input terminals are
inactive.
• Built in Night Set Back and
Unoccupied Functions function
differently with a conventional
mechanical thermostat.
• A built-in algorithm which allows
for automatic reset of the
discharge air temperature while
economizing is not available.

48

The terminal strip for attaching the
thermostat wires is located on the
RTRM module in the control
compartment.
When the unit is operating from a
conventional thermostat or other
binary input, the economizer
setpoint feature, relative to the
cooling and heating setpoints, is
lost. The economizer control is
based strictly on a signal from the
thermostat, but still maintains
mixed air temperature control of
53°±3°F when in the economizer
mode. The economizer enable and
disable function is still determined
by the outside air sensor through
the RTRM.
If a single-stage thermostat is used,
only the economizer (if enabled) or
the compressor (if economizer is
disabled) will operate on a call for
cooling. A twostage thermostat is
required to achieve economizer
operation and compressor
operation at the same time.
With economizer enabled, a Y1 call
for 1st stage cooling will be the
economizer. The damper will
modulate between minimum
position and 100% to maintain
mixed air temperature at 53°±3°. At
50°F the damper will be at
minimum position. If the
economizer is enabled, a Y2 call for
2nd stage cooling will start the first
compressor if required. If the
economizer is disabled, 1st stage
(Y1) will be the first compressor. If
the unit has two compressors, a call
for 2nd stage cooling (Y2) will start
the second compressor. When using
a conventional thermostat, or other
binary input, the ReliaTel controls
will only allow two stages of
cooling.

Figure 30 - Terminal strip

COM
T
X2
Y2
W2
G
W1/0
Y1
R

Customers occasionally require
operation with a conventional
thermostat rather than a zone
sensor. In some cases there is a
preference for a specific thermostat
model, and in others there is
reluctance to adopt newer
technology that may not be as well
understood as conventional
thermostats. In addition, non-Trane
Building Controllers typically
provide an interface to HVAC
equipment based on a conventional
thermostat interface. Units applied
with this type of controller need to
accept conventional thermostat
inputs.

RT-SVX20A-E4

Operation
Conventional thermostat signals
represent direct calls for unit
functions. In their simplest
applications, thermostat contacts
directly control contactors or other
load switching devices. This function
provides inputs for the thermostat
signals and processing to enhance
reliability and performance.
Compressor protection and
reliability enhancement functions
(HPC, LPC, Minimum On/Off timers,
etc.). All operate the same whether
applied with zone sensors or a
conventional thermostat.

Logic is also provided to cause
appropriate unit functions when
inappropriate thermostat signals are
provided. Simultaneous calls for
heating and cooling will be ignored,
and the fan will be turned on with a
call for heating or cooling even if
the fan request is not detected.
If the thermostat is immediately
changed from a heating to a cooling
call, or vice versa, there will be a
five minute delay before the new
call will initiate.

Thermostat signals are as follows:
R 24VAC power to thermostat
Y1 Call for compressor 1 or first
stage cooling
Y2 Call for compressor 2 or 2nd
stage cooling
G Call for supply fan
W1 Call for heat 1
W2 Call for heat 2
Heat pump only:
X2 Call for emergency heat
O Switchover valve On = cooling,
Off = heating
T Bias for heat anticipation for those
mechanical thermostats that use
this function

Table 44
Conventional thermostat Gas / Electric, Electric Heat
Input / connection

Function when energized

G (fan)

Fan runs continuously except during unoccupied mode (see next page)

Y1 (compressor 1 or economizer)

Compressor #1 runs or economizer operates

Y2 (compressor 2 or compressor 1 while economizing)

Compressor #2 also runs, or #1 compressor runs while economizing

W1 (gas / electric heat first stage)

1st stage heat

W2 (gas / electric heat 2nd stage)

2nd stage heat (if available)

Table 45
Conventional thermostat Heat pump
Input / connection

Function when energized

Cooling mode
G (fan)

Fan runs continuously except during unoccupied mode (see next page)

O (reversing valve during cooling)

Reversing valve in cool mode

Y1 + O (first cooling stage)

Compressor #1 runs or economizer operates

Y1 + Y2 + O (2nd cooling stage)

Compressor #2 also runs, or #1 compressor runs while economizing

Heating mode
G (fan)

Fan runs continuously except during unoccupied mode (see next page)

Y1 (both compressors 1st heating stage)

Both compressors run

Y2 (during heating nothing happens)

No change

W2 (electric heat 2nd stage)

2nd stage (electric) heat

X2 (electric heat only)

Electric heat only - no compressors

T (provides heat anticipation signal for those mechanical
thermostats that use this feature.
If the thermostat used does not have a "T" terminal, disregard
this terminal.)

RT-SVX20A-E4

49

Operation
Unoccupied mode
If the thermostat being used is
programmable, it will have its own
strategy for unoccupied mode and
will control the unit directly. If a
mechanical thermostat is being
used, a field applied time clock with
relay contacts connected to J6-11
and J6-12 can initiate an
unoccupied mode as follows:
• Contacts open: Normal occupied
operation.
• Contacts closed: Unoccupied
operation as follows - Fan in
auto mode regardless of fan
switch position. Economizer
closes except while economizing
regardless of minimum position
setting.
Cooling/Economizer Operation
If unit does not have an economizer,
the Cool/Econ Stage 1 and Stage 2
will call directly for mechanical
cooling (compressor) stages. If the
unit has an economizer, the
Cool/Econ stages will function as
shown in Table 46.

Setting the economizer or
0-50% motorized hood
(option)
The ECA board is mounted on the
damper actuator. To access the ECA
board on economizers:
• Remove the filter access panel of
the unit.
• The electrical power must be
disconnected to set the
minimum position and check the
economizer.
• Disconnect the power supply,
put the thermostat fan selector
to "ON" and the "HEAT/COOL"
selector to "OFF". This puts the
damper in the minimum
ventilation position.
• To set the required minimum
ventilation air position, turn the
dial on the ECA clockwise to
increase ventilation, or anticlockwise to decrease ventilation.
The damper will open at this
setting whenever the fan circuit
is powered up (see Figure 25).
• When the arrow on the dial's
adjustment screw is pointing to
8 o'clock, the minimum position
is roughly 0%. When the dial is
pointing to 12 o'clock it is
roughly 25%, and when the dial
is pointing to 4 o'clock it is
roughly 50% (see figure 25).

Table 46 - Cooling/Economizer Operation with Thermostat
OK to
Thermostat Thermostat Call for Economizer
Economize?
Y1
Y2
Cooling

Compressor Staging
Request

No

On

Off

Inactive

Compressor Output 1

No

Off

On

Inactive

Compressor Output 2

No

On

On

Inactive

Compressor
Outputs 1 & 2

Yes

On

Off

Active

Off

Yes

Off

On

Active

Compressor off

Yes

On

On

Active

Compessor

Notes:
40 to 50 ton CV only
This unit has 3 stages of cooling if using a zone sensor. If using a conventional thermostat it has 2 stages as
follows:
Y1 = 1st stage
Y1 + Y2 = 3rd stage
VAV
Thermostat inputs are ignored on VAV units.

50

RT-SVX20A-E4

Operation
To check the damper is functioning
correctly, the ECA is equipped with
an indicator light in the middle of
the board. This light operates as in
Table 42.

Figure 31 - Minimum fresh air adjustment
+

1
EXF
2

MIXED AIR SENSOR INPUT
COMMON

1
MAT
2

COMMON
OHS INPUT

1 OAH/
2 OAE

NOT USED-OAT IS
CONNECTED TO RTRM

1
OAT
2

RA INPUT
COMMON

1
RAT
2

COMMON
RHS INPUT

1 RAH/
2 RAE

CO2 SENSOR INPUT
COMMON

1
DCV
2

P

P1

2-10 VDC
+
FEEDBACK
INPUT
2-10 VDC +
CONTROL
OUTPUT

MIN POS.
SETPOINT
0-50%
ABCD
SETTINGS

GREEN
LED

CO2 "PURGE"
SETPOINT
ADJUSTMENT
500-1500 PPM

4 321

POWER EXHAUST
CONTACTS

Table 47 - ECA board LED
OFF:

No Power or Failure

ON:

Normal, OK to Economize

Slow Flash:

Normal, Not OK to
Economize

Fast Flash:

Communications Failure

Pulse Flash:

Error Code

1 Flash:

Actuator Fault

2 Flashes:

CO2 Sensor

3 Flashes:

RA Humidity Sensor

4 Flashes:

RA Temp Sensor

5 Flashes:

OA Quality Sensor

6 Flashes:

OA Humidity Sensor

7 Flashes:

OA Temp Sensor

8 Flashes:

MA Temp Sensor

9 Flashes:

RAM Fault

10 Flashes:

ROM Fault

11 Flashes:

EEPROM Fault

1

While setting the minimum position
the damper may move towards the
new setting in several small steps.
Once the damper has remained in
the same position for 10 to 15
seconds it can be assumed it is in
the new position.

- MODBUS
+
COMMON
24VAC

SHORTED=CLOSED
OPEN=ON BOARD POT.
270 omega = 50%
REMOTE
MINIMUM
POTENTIOMETER
WHT
RED
BLUE

1 = ECA board

RT-SVX20A-E4

51

Operation
Test procedures
Operating checklist before start-up
• Unit is level, with sufficient
clearance all round
• Duct network is correctly sized
according to the unit
configuration, insulated, and
water-tight
• Condensate drainage line is
correctly sized, equipped with a
trap, and sloped
• Filters are in position, of correct
size and quantity and clean
• Wiring is correctly sized and
connected in accordance with
wiring diagrams
• Power supply lines are protected
by recommended fuses and
correctly earthed
• Thermostat is correctly wired
and positioned
• Unit is checked for refrigerant
charge and leaks
• Indoor and outdoor fans rotate
freely and are fixed on shafts
• Supply fan rotation speed is set
• Access panels and doors are
replaced to prevent air entering
and risks of injury
• Checking of the gas heating
section, in accordance with
above procedure

52

WARNING! If any operating checks
must be performed with the unit
operating, it is the technician's
responsibility to recognize any
possible hazards and proceed in a
safe manner. Failure to do so could
result in severe personal injury or
death due to electrical shock or
contact with moving parts.

Test mode procedure at the
ReliaTel™ control board

Power-up initialization

CAUTION! Use one of the following
"Test" procedures to bypass some
time delays and to start the unit at
the control panel.

CAUTION! Before proceeding with
any test procedure or operation,
make sure that crankcase heaters
have been energized for at least
8 hours.
Units equipped with Scroll
compressors do not have crankcase
heaters.
Note: Upon power initialization, the
RTRM performs self-diagnostic
checks to insure that all internal
controls are functional. It also
checks the configuration parameters
against the components connected
to the system. The Liteport LED
located on the RTRM module is
turned "On" within 1 second of
power-up if internal operation is
okay.

Operating the unit from the roof
using the test mode at the
ReliaTel™ control board.
CAUTION! Before proceeding with
the following test procedures, make
sure that thermostat or zone sensor
is off.

Each step of unit operation can be
activated individually by
temporarily shorting across the
"Test" terminals for two to three
seconds. The Liteport LED located
on the RTRM module will blink
when the test mode has been
initiated. The unit can be left in any
"Test" step for up to one hour
before it will automatically
terminate, or it can be terminated
by opening the main power
disconnect switch. Once the test
mode has been terminated, the
Liteport LED will glow continuously
and the unit will revert to the
"System" control.

RT-SVX20A-E4

Operation

Outdoor Fan Motor 1

Heat 2

Heat 1

Compressor 2

Compressor 1

Economizer

Mode

Min

Off

Off

Off

Off

Off

Off

Open

Off

Off

Off

Off

Off

Off

3

Cool 1

On

Min

On

Off

Off

Off

On

**

4

Cool 2

On

Min

On

On

Off

Off

On

**

5*

Heat 1

On

Min

Off

Off

On

Off

Off

Off

6*

Heat 2

On

Min

Off

Off

On

On

Off

Off

* With Optional Accessory
** "Off" If temperature falls below 16° (±1°C), "On" if temperature rises above 18° (±1°C).
Note: Steps for optional accessories and modes not present in unit will be skipped.

Outdoor Fan Motor 1

Heat 2

Heat 1

Compressor 2

Compressor 1

Table 49 - Service Test Guide for Component Operation on Heat Pump Units

Economizer

For unit test steps and test modes,
values to cycle the various
components, refer to Tables 48
and 49.

On
On

Indoor Fan motor

This method is not recommended
for start-up due to the short timing
between individual component
steps. This method initiates the
different components of the unit,
one at a time, when a jumper is
installed across the test terminals.
The unit will start the first test step
and change to the next step every
30 seconds. At the end of the test
mode, control of the unit will
automatically revert to the applied
"System" control method.

Fan On
Economizer

Mode

2. Auto Test Mode

1
2*

Step

This method initiates the different
components of the unit, one at a
time, by temporarily shorting across
the two test terminals for two to
three seconds. For the initial startup
of the unit, this method allows the
technician to cycle a component
"On" and have up to 1 hour to
complete the check.

Step

1. Step Test Mode

Indoor Fan motor

There are 2 methods in which the
"Test" mode can be cycled with the
test button:

Outdoor Fan Motor 1

Table 48 - Service Test Guide for Component Operation on cooling only units

Outdoor Fan Motor 1

Test modes

1

Fan On

On

Min

Off

Off

Off

Off

Off

Off

2*

Economizer

On

Open

Off

Off

Off

Off

Off

Off

3

Cool 1

On

Min

On

Off

Off

Off

On

**

4

Cool 2

On

Min

On

On

Off

Off

On

**

5*

Heat 1

On

Min

Off

Off

On

Off

Off

Off

6*

Heat 2

On

Min

Off

Off

On

On

Off

Off

* With Optional Accessory
** "Off" If temperature falls below 16° (±1°C), "On" if temperature rises above 18° (±1°C).
Note: Steps for optional accessories and modes not present in unit will be skipped.

RT-SVX20A-E4

53

Operation
Figure 32 - Gas valve

Unit start-up
Verification of gas valve settings (Reserved for the qualified gas
technician)

Note: Unit to be installed outside
only.

G20 - 7.5mbar
G25 -10.5mbar

1

WARNING! Improper gas valve
setting may lead to burner
destruction and people injury.

Note: Expansion valve must be
adapted to the type of gas used:
• G 20: 20 mb
• G 25: 25 mb
• G 31 (Propane): 37 or 50 mb

3/32"

Note: Unit factory-set for G20.

1 = Screw to set gas valve

Table 50 - Gas type designation per country
Destination countries
FR
DE-LU-PL
CH-ES-GB-IE-PT-CZ-GR
NL
IT-AT-NO-FI-SE-EE-LT-LV
IT
BE
DK-SK-SI-TR
BE-PL
AT-DE-LU-HU-SK
HU

Pressure in mbar
20/25 37
20
20 37
25 30
20
28-30/37
20/25
20
37
50
25

Category
II2E+3P
I2E
II2H3P
II2L3P
I2H
I3+
I2E
I2H
I3P
I3P
I2H

Table 51 - Gas burner data
Burner

G120

G200

G250

Gas Type

G20

G25

G31

G20

G25

G31

G20

G25

Heating Input (kW)

0,0

0,0

0,0

0,0

0,0

0,0

0,0

0,0

0,0

Heating Output (kW)

24,6

25

25,1

41,3

41,7

41,9

51,9

52,3

52,6

Efficiency

93%

93%

93%

93%

93%

93%

#DIV/0!

#DIV/0!

93%

2,8

3,3

2,1

4,7

5,5

3,5

5,9

6,9

4,4

34,02

29,3

46,34

34,02

29,3

46,34

34,02

29,3

46,34

17 / 20 / 25

20 / 25 / 30

25 / 37 / 45

17 / 20 / 25

20 / 25 / 30

25 / 37 / 45

17 / 20 / 25

20 / 25 / 30

Low pressure switch setting (mbar)

15

15

20

15

15

20

15

15

20

Manifold pressure (mbar)

7,5

10,5

24,9

7,5

10,5

24,9

7,5

10,5

24,9

Gas Flow rate (Nm3/h)
Specific Heating Capacity (MJ/kg)
Heating Output per stage (1st/2nd) (%)
Inlet pressure Min/Nominal/Max (mbar)

0%-100%

No of injectors
Injector size (Drill / mm)

0%-70%-100%

3
(33) / 2.87mm

0%-70%-100%

4
(51) / 1.70mm

(1/8") / 3.175mm

G31

25 / 37 / 45

5
(49) / 1.85mm

(1/8") / 3.175mm

(49) / 1.85mm

Smoke analysis
Gas / Voltage

G20 - 20mbar G25 - 25mbar G31 - 37mbar G20 - 20mbar G25 - 25mbar G31 - 37mbar G20 - 20mbar G25 - 25mbar G31 - 37mbar
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50
400/3/50

CO %

0.0012%

0.0017%

0.0003%

0.0020%

0.0015%

0.0011%

0.0020%

0.0015%

0.0011%

Nox ppm

59 ppm

44 ppm

8.7 ppm

10 ppm

10 ppm

11 ppm

10 ppm

10 ppm

11 ppm

CO2 %

8,29%

9,20%

8,90%

7,10%

7,10%

8,28%

7,10%

7,10%

8,28%

Notes:
(1) G20 heating output given for 34,02 MJ/m3 (15°C-1013)
(2) G25 heating output given for 29,30 MJ/m3 (15°C-1013)
(3) G31 heating output given for 46.34 MJ/kg

54

RT-SVX20A-E4

Operation
Starting the unit in cooling mode

Operating pressures

Before start-up, ensure that all
power cables are tightened.

After the unit has operated in
cooling mode for a short period of
time, install pressure gauges on the
gauge ports of the discharge and
suction line valves.

Verify that the unit airflow rate is
adjusted according to the
information provided in the "Supply
fan adjustment" section of this
manual.
To start the unit in cooling mode:
• Place the zone sensor system
switch in the "COOL" position.
• Position the cooling setpoint
approximately 10° below room
temperature and place the fan
switch in the "AUTO" or "ON"
position.
• Turn on unit main power supply.
The condenser fan motor,
compressor and supply fan motor
should operate automatically.
There will be a delay of up to
5 minutes before the unit starts in
cooling mode.

Note: To bypass time delays and
verify the operation of this unit from
the roof, use the "Test procedure"
section in this manual. Check the
suction and discharge pressures.
Note: Always route refrigerant
hoses through the port hole
provided and ensure that the
compressor access panel is in place.
Cooling shutdown
To exit the test mode, disconnect
unit power for 3-5 seconds and
reapply. When running the unit
using the zone sensor as the
control, position the selector switch
to "OFF".
There may be a delay of up to
3 minutes before compressors shut
down and an additional one minute
before the fan shuts down in this
setting.

Final installation checklist
• Are all power cables tightened?
Check torque of power cables
contact !
• Is the condenser fan and indoor
blower operating correctly, i.e.
correct rotation and without
undue noise?
• Are the compressors operating
correctly and has the system
been checked for leaks?
• Have the voltage and running
currents been checked to
determine if they are within
limits?
• Have the air discharge grilles
been adjusted to balance the
system?
• Has the ductwork been checked
for air leaks and any
condensation?
• Has the air temperature rise
been checked?
• Has the indoor airflow been
checked and adjusted if
necessary?
• Has the unit been checked for
tubing and sheet metal rattles or
any unusual noises?
• Are all covers and panels in
place and properly fastened?

Do not de-energize main power
disconnect except when unit is to
be serviced. Power is required to
keep the compressor crankcase
warm and boil off refrigerant in the
oil (except on units with Scroll
compressors).

RT-SVX20A-E4

55

Operation
ReliaTel™ is a microelectronic
control feature, which provides
operating functions that are
significantly different from
conventional electro-mechanical
units. The master module is the
ReliaTel™ Refrigeration Module
(RTRM).
The RTRM provides compressor
antishort cycle timing functions
through minimum "Off" and "On"
timing to increase reliability,
performance and to maximize unit
efficiency.
Upon power initialization, the RTRM
performs self-diagnostic checks to
insure that all internal controls are
functioning. It checks the
configuration parameters against
the components connected to the
system.
The LED located on the RTRM
module is turned "On" within one
second after power-up if all internal
operations are okay.

56

Cooling without an
Economizer
When the system switch is set to
the "Cool" position and the zone
temperature rises above the cooling
setpoint controlband, the RTRM
energizes the (K9) relay coil located
on the RTRM. When the K9 relay
contacts close, the compressor
contactor (CC1) coil is energized
provided the low pressure control
(LPC1) and high pressure control
(HPC1) are closed. When the CC1
contacts close, compressor (CPR1)
and the outdoor fan motor (ODM)
start to maintain the zone
temperature to within ± 2 F of the
sensor setpoint at the sensed
location.
If the first stage of cooling can not
satisfy the cooling requirement, the
RTRM energizes the (K10) relay coil
located on the RTRM. When the
(K10) relay contacts close, the
compressor contactor (CC2) coil is
energized provided the low
pressure control (LPC2) and high
pressure control (HPC2) are closed.
When the CC2 contacts close,
compressor (CPR2) starts to
maintain the zone temperature to
within ± 2 F of the sensor setpoint
at the sensed location.

Evaporator Fan Operation
When the fan selection switch is set
to the "Auto" position, the RTRM
energizes the (K6) relay coil
approximately one second after
energizing the compressor
contactor coil (CC1) in the cooling
mode. In heating mode, the RTRM
energizes the (K6) relay coil
approximately 45 seconds after gas
ignition. Closing the K6 contacts on
the RTRM energizes the supply fan
relay (F) coil to start the supply fan
motor (IDM).
The RTRM de-energizes the fan
relay (F) approximately 60 seconds
after the cooling requirement has
be satisfied to enhance unit
efficiency.
When the heating cycle is
terminated, the supply fan relay (F)
coil is de-energized approximately
90 seconds after the heating
requirement.
When the fan selection switch is set
to the "On" position, the RTRM
keeps the supply fan relay coil (F)
energized for continuous fan motor
operation.
When the unit is equipped with the
optional clogged filter switch, wired
between terminals J7-3 and J7-4 on
the ReliaTel™ Options Module
(RTOM), the RTRM produces an
analog output if the clogged filter
switch (CFS) closes for two minutes
after a request for fan operation.
When the system is connected to a
remote panel, the "SERVICE" LED
will be turned on when this failure
occurs.

RT-SVX20A-E4

Operation
Low Ambient Operation
During low ambient operation,
outside air temperature below 13ºC,
the RTRM will cycle the compressor
and outdoor fan motor "Off" for
approximately three minutes after
every 10 minutes of accumulated
compressor run time. The supply
fan motor (IDM) will continue to
operate during this evaporator
defrost cycle (EDC) and the
compressor and outdoor fan will
return to normal operation once the
defrost cycle has terminated and
the compressor "Off" time delay has
been satisfied.

RT-SVX20A-E4

Cooling with an
Economizer
The economizer is utilized to control
the zone temperature providing the
outside air conditions are suitable.
Outside air is drawn into the unit
through modulating dampers. When
cooling is required and economizing
is possible, the RTRM sends the
cooling request to the unit
economizer actuator (ECA) to open
the economizer damper. The RTRM
tries to cool the zone utilizing the
economizer to slightly below the
zone temperature setpoint. If the
mixed air sensor (MAS) senses that
the mixed air temperature is below
53ºF, the damper modulates toward
the closed position. If the zone
temperature continues to rise above
the zone temperature setpoint
controlband and the economizer
damper is full open, the RTRM
energizes the compressor contactor
(CC1). If the zone temperature
continues to rise above the zone
temperature setpoint controlband
and the economizer damper is fully
open, the RTRM energizes the
compressor contactor (CC2).

The ECA continues to modulate the
economizer damper open/closed to
keep the mixed air temperature that
is calculated by the RTRM.
If economizing is not possible, the
ECA drives the damper to the
minimum position setpoint when
the supply fan relay (F) is energized
and allows mechanical cooling
operation. When the unit is
equipped with the optional fan
failure switch, wired between
terminals J7-5 and J7-6 on the
RTOM, the RTRM will stop all
cooling functions and produce an
analog output if the fan failure
switch (FFS) does not open within
40 seconds after a request for fan
operation. When the system is
connected to a remote panel, the
"SERVICE" LED will flash when this
failure occurs.

57

Operation
Economizer Set-Up
Adjusting the minimum position
potentiometer located on the unit
economizer Actuator (ECA) sets the
required amount of ventilation air.
Two of the three methods for
determining the suitability of the
outside air can be selected utilizing
the enthalpy potentiometer on the
ECA, as described below:
1. Ambient Temperature controlling the economizing
cycle by sensing the outside air
dry bulb temperature. The Table
below lists the selectable dry
bulb values by potentiometer
setting.
2. Reference Enthalpy - controlling
the economizer cycle by sensing
the outdoor air humidity. The
Table below lists the selectable
enthalpy values by
potentiometer setting.
If the outside air enthalpy value
is less than the selected value,
the economizer is allowed to
operate.

3. Comparative Enthalpy - By
utilizing a humidity sensor and a
temperature sensor in both the
return air stream and the
outdoor air stream, the unit
control processor (RTRM) will be
able to establish which
conditions are best suited for
maintaining the zone
temperature, i.e. indoor
conditions or outdoor conditions.
The potentiometer located on
the ECA is non-functional when
both the temperature and
humidity sensors are installed.
Table 52 - Potentiometer Setting
Potentiometer Dry BuIb
Setting
(°C)

Enthalpy
(KJ/kg)

A

23*

63

B

21

58

C

19

53

D

17

51

*Factory Setting

ReliaTel™ Control Heating
Operation
When the system switch is set to
the "Heat" position and the zone
temperature falls below the heating
setpoint controlband, a heat cycle is
initiated when the RTRM
communicates ignition information
to the Ignition module (IGN).

58

Ignition Module
Two Stage (IGN) runs self-check
(including verification that the gas
valve is de-energized). (IGN) checks
the high-limit switches (TC01 &
TC02) for normally closed contacts.
With 115 VAC power supplied to the
ignition module (IGN), the hot
surface ignition probe (IP) is
preheated for approximately
45 seconds. The gas valve (GV) is
energized for approximately
7 seconds for trial for ignition, to
ignite the burner.
Once the burner is ignited, the hot
surface ignition probe (IP) is deenergized by the ignition module
(IGN) and functions as the flame
sensing device.
If the burner fails to ignite, the
ignition module will make two more
attempts before locking out. The
green LED will indicate a lock out by
two fast flashes. An ignition lockout
can be reset by:
1. Opening for 3 seconds and
closing the main power
disconnect switch
2. By switching the "Mode" switch
on the zone sensor to "OFF" and
then to the desired position
3. Allowing the ignition control
module to reset automatically
after one hour.

RT-SVX20A-E4

Operation
Refer to the ignition control module
diagnostics section for the LED
diagnostic definitions.
When the fan selection switch is set
to the "Auto" position, the RTRM
energizes the supply fan relay (F)
coil approximately 30 second after
initiating the heating cycle to start
the supply fan motor (IDM).
The automatic reset high limit
(TCO1), located in the bottom right
corner of the burner compartment,
protects against abnormally high
leaving air temperatures.
The automatic reset fan fail limit
(TCO2), located in the upper middle
section of the supply fan board,
protects against abnormally high
heat buildup which could occur
because of extended cycling of the
high limit (TCO1) or if the supply
fan motor (IDM) fails to operate.
Should TCO2 open, the RTRM will
energize the supply fan relay (F) in
an attempt to start the fan motor.
The RTRM signals that a heat failure
has occurred by flashing the "Heat"
LED on the zone sensor.
There is a Green LED located in the
Ignition Control Module. The table
below lists the diagnostics and the
status of the LED during the various
operating states.

Final installation checklist
•

Is the condenser fan and indoor
blower operating correctly, i.e.:
correct rotation and without
undue noise?
• Are the compressors operating
correctly and has the system
charge been checked?
• Has the gas module been
installed as per the procedure in
this manual?
• Have the voltage and running
currents been checked to
determine if they are with in
limits?
• Have the air discharge grilles
been adjusted to balance the
system?
• Has the ductwork been checked
for air leaks and any
condensation?
• Has the heating air temperature
rise been checked?
• Has the indoor airflow been
checked and adjusted if
necessary?
• Has the unit been checked for
tubing and sheet metal rattles
orany unusual noises?
• Are all covers and panels in
placeand properly fastened?
To keep the unit operating safely
and efficiently, the manufacturer
recommends that a qualified service
technician check the entire system
at least once each year, or more
frequently if conditions warrant.

Table 53 - LED status
Diagnostics
1. Powered but no heat dernand
2. Heat demand without fault
3. No flame detection on ignition - or signal detected
and then lost
4. Gas unit incorrectly wired or flame signal detected on
a heat demand
5. Internal fault

RT-SVX20A-E4

Green LED

Red LED

Off

Off

Flash ing

Off

Off

Flashing

Steady

Flashing

Off

Steady

59

Maintenance
End user routine
maintenance

To keep the unit operating safely
and efficiently, the manufacturer
recommends that a qualified service
technician check the entire system
at least once each year, or more
frequently if conditions warrant it.

Some of the periodic maintenance
functions for the unit can be
undertaken by the end user. This
includes replacing (disposable) or
cleaning (permanent) air filters,
cleaning unit cabinet, cleaning the
condenser coil, and carrying out a
general unit inspection on a regular
basis.
WARNING! Disconnect the power
supply before removing access
panels to service the unit. Failure to
disconnect power before attempting
any servicing can result in severe
injury or death.
Air filters
It is very important for the central
duct system air filters to be kept
clean.
These should be inspected at least
once a month when the system is in
constant operation (in new
buildings, the filters should be
checked every week for the first four
weeks). If disposable-type filters are
used, they should only be replaced
with ones of the same type and
size.

Table 54 - Refrigerant charge
Unit model and size

Number of circuits

Refrigerant charge
(kg) (R22/R407C)

YSD/YSH 060

1

3.5

YSD/YSH 072

1

3.7

YSD/YSH 090

1

4.5

YSD/YSH 102

2

3.7/2.1

YSD/YSH 120

2

3.5/3.0

Note: Refrigerant charges are given for information only. Check unit nameplate for exact values.

60

RT-SVX20A-E4

Maintenance
Note: Do not attempt to clean
disposable filters. Permanent filters
can be cleaned by washing with a
mild detergent and water. Ensure
that the filters are thoroughly dry
before reinstalling them in the unit
(or duct system).
Note: Replace permanent filters
annually if washing fails to clean
them, or they show signs of
deterioration. Be sure to use the
same type and size as were
originally installed.
Condenser coil
Unfiltered air circulates through the
unit's condenser coil and can cause
the coil's surface to become
clogged with dust, dirt, etc. To clean
the coil, brush the coil surface in the
direction of the fins with a soft
bristled brush.
Keep all vegetation away from the
condenser coil area.
Hot water coil (option)
Stop the unit. Do not disconnect the
main supply to the unit. This will
permit the anti-frost protection to
continue to operate, and avoid
water to freeze-up in the coil.

RT-SVX20A-E4

Service technician
maintenance
Before the cooling season, your
service technician may examine the
following areas of your unit:
• Filters, for cleaning or
replacement
• Motors and drives system
components
• Economizer gaskets, for
replacement if necessary
• Condenser coils, for cleaning
• Safety controls, for mechanical
cleaning
• Electrical components and
wiring, for replacement and
tightening of connections as
necessary
• Condensate drain, for cleaning
• Unit duct connections, to ensure
they are physically sound and
sealed to the unit casing
• Unit mounting support, to
ensure that it is sound
• The unit, to ensure there is no
obvious deterioration
Before the heating season, your
service technician may examine the
following areas of your unit:
• The unit, to ensure that the
condenser coil can receive the
required airflow (that the
condenser fan grille is not
obstructed)
• The control panel wiring, to
verify that all electrical
connections are tight, and that
wire insulation is intact
• Clean burner area, verify the gas
heat system operates properly.

61

Maintenance
Troubleshooting
The RTRM has the ability to provide
the service personnel with some
unit diagnostics and system status
information. Before turning the
main power disconnect switch "Off",
follow the steps below to check the
ReliaTel™
Refrigeration Module (RTRM). All
diagnostics & system status
information stored in the RTRM will
be lost when the main power is
turned "Off".
1. Verify that the Liteport LED on
the RTRM is burning
continuously. If the LED is lit, go
to Step 3.
2. If the LED is not lit, verify that
24 VAC is present between J1-1
and J1-2. If 24 VAC is present,
proceed to Step 3. If 24 VAC is
not present, check the unit main
power supply, check transformer
(TNS1). Proceed to Step 3 if
necessary.
3. Utilizing "Method 1" or
"Method 2" in the system status
diagnostic section, check the
following: System status,
Heating status, Cooling status. If
a System failure is indicated,
proceed to Step 4. If no failures
are indicated, proceed to Step 5.
4. If a System failure is indicated,
recheck Steps 1 and 2. If the LED
is not lit in Step 1, and 24 VAC is
present in Step 2, the RTRM has
failed. Replace the RTRM.

62

5. If no failures are indicated, use
one of the TEST mode
procedures described in the unit
"Start-Up" section to start the
unit. This procedure will allow
you to check all of the RTRM
outputs, and all of the external
controls (relays, contactors, etc.)
that the RTRM outputs energize,
for each respective mode.
Proceed to Step 6.
6. Step the system through all of
the available modes, and verify
operation of all outputs, controls,
and modes. If a problem in
operation is noted in any mode,
you may leave the system in that
mode for up to one hour while
troubleshooting. Refer to the
sequence of operations for each
mode, to assist in verifying
proper operation. Make the
necessary repairs and proceed to
Steps 7 and 8.
7. If no abnormal operating
conditions appear in the test
mode, exit the test mode by
turning the power "Off" at the
main power disconnect switch.
8. Refer to the individual
component test procedures if
other microelectronic
components are suspect.

System Status Checkout Procedure
"System Status" is checked by using
one of the following two methods:

Method 1
If the Zone Sensor Module (ZSM) is
equipped with a remote panel with
LED status indication, you can check
the unit within the space. If the ZSM
does not have LED's, use Method 2.
THS/P03 have the remote panel
indication feature. The LED
descriptions are listed below:
LED 1 (System) "On" during normal
operation. "Off" if a system failure
occurs or the LED fails. "Flashing"
indicates test mode.
LED 2 (Heat) "On" when the heat
cycle is operating. "Off" when the
heat cycle terminates or the LED
fails. "Flashing" indicates a heating
failure.
LED 3 (Cool) "On" when the cooling
cycle is operating. "Off" when the
cooling cycle terminates or the LED
fails. "Flashing" indicates a cooling
failure.
LED 4 (Service) "On" indicates a
clogged filter. "Off" during normal
operation. "Flashing" indicates an
supply fan failure.

RT-SVX20A-E4

Maintenance
Below is the complete listing of
failure indication causes:
System failure
Check the voltage between
terminals 6 and 9 on J6, it should
read approximately 32 VDC. If no
voltage is present, a system failure
has occurred. Refer to Step 4 in the
previous section for the
recommended troubleshooting
procedure.
Heating Failure
Verify Heat Failure by Ignition
Module (IGN) LED indicator:
OFF: No Power or Failure
ON: Normal
Slow Flash: Normal, Heat Call
Fast Flash: Error Code:
1 Flash: Communication Failure
2 Flashes: System Lockout
3 Flashes: Pressure Switch Fail
4 Flashes TC01 or TC02 Open
5 Flashes: Flame w/o Gas Valve
6 Flashes: Flame Rollout Open

Cooling Failure
1. Cooling and heating set point
(slide pot) on the zone sensor
has failed. Refer to the "Zone
Sensor Test Procedure" section.
2. Zone temperature thermistor
ZTEMP on ZTS failed. Refer to
the "Zone Sensor Test Procedure"
section.
3. CC1 or CC2 24 VAC control circuit
has opened, check CC1 & CC2
coils, and any of the controls
below that apply to the unit
(HPC1, HPC2).
4. LPC1 has opened during the
3 minute minimum "on time"
during 4 consecutive compressor
starts, check LPC1 or LPC2 by
testing voltage between the J1-8
& J3-2 terminals on the RTRM
and ground. If 24 VAC is present,
the LPC's has not tripped. If no
voltage is present, LPC's has
tripped.
Service Failure
1. If the supply fan proving switch
has closed, the unit will not
operate (when connected to
RTOM), check the fan motor,
belts, and proving switch.
2. Clogged filter switch has closed,
check the filters.

Simultaneous Heat and Cool Failure
1. Emergency Stop is activated

Method 2
The second method for determining
system status is done by checking
voltage readings at the RTRM (J6).
The system indication descriptions
and the approximate voltages are
listed below.
System Failure
Measure the voltage between
terminals J6-9 & J6-6.
Normal Operation = approximately
32 VDC
System Failure = less than 1 VDC,
approximately 0.75 VDC
Test Mode = voltage alternates
between 32 VDC & 0.75 VDC
Heat Failure
Measure the voltage between
terminals J6-7 & J6-6.
Heat Operating = approximately
32 VDC
Heat Off = less than 1 VDC,
approximately 0.75 VDC
Heating Failure = voltage alternates
between 32 VDC & 0.75 VDC
Cool Failure
Measure the voltage between
terminals J6-8 & J6-6.
Cool Operating = approximately
32 VDC
Cool Off = less than 1 VDC,
approximately 0.75 VDC
Cooling Failure = voltage alternates
between 32 VDC & 0.75 VDC

RT-SVX20A-E4

63

Maintenance
Service Failure
Measure the voltage between
terminals J6-10 & J6-6.
Clogged Filter = Approximately
32 VDC.
Normal = Less than 1 VDC,
approximately 0.75 VDC
Fan Failure = voltage alternates
between 32 VDC & 0.75 VDC.
To use LED's for quick status
information at the unit, purchase a
ZSM and connect wires with
alligator clamps to terminals 6
through 10.
Connect each respective terminal
wire (6 through 10) from the Zone
Sensor to the unit J6 terminals 6
through 10.
Note: If the system is equipped
with a programmable zone sensor
THS03, the LED indicators will not
function while the ZSM is
connected.

Resetting Cooling and Ignition
Lockouts

Zone Temperature Sensor (ZTS)
Service Indicator

Cooling Failures and Ignition

The ZSM SERVICE LED is a generic
indicator that will signal the closing
of a Normally Open switch at any
time, providing the Indoor Motor
(IDM) is operating. This indicator is
usually used to indicate a clogged
filter, or an air side fan failure.

Lockouts are reset in an identical
manner. Method 1 explains
resetting the system from the space,
Method 2 explains resetting the
system at the unit.
Note: Before resetting Cooling
Failures and Ignition Lockouts,
check the Failure Status Diagnostics
by the methods previously
explained.
Diagnostics will be lost when the
power to the unit is disconnected.
Method 1
To reset the system from the zone,
turn the "Mode" selection switch at
the zone sensor to the "Off"
position.
After approximately 30 seconds,
turn the "Mode" selection switch to
the desired mode, i.e. Heat, Cool or
Auto.
Method 2
To reset the system at the unit,
cycle the unit power by turning the
disconnect switch "Off" and then
"On".
Lockouts can be cleared through the
building management system. Refer
to the building management system
instructions for more information.

64

The RTRM will ignore the closing of
this Normally Open switch for 2 (±1)
minutes. This helps prevent
nuisance SERVICE LED indications.
The exception is the LED will flash
40 seconds after the fan is turned
"On" if the Fan Proving Switch is not
made.
Clogged Filter Switch
This LED will remain lit the entire
time that the Normally Open switch
is closed. The LED will be turned off
immediately after resetting the
switch (to the Normally Open
position), or any time that the IDM
is turned "Off".
If the switch remains closed, and
the IDM is turned "On", the SERVICE
LED will be turned "On" again after
the 2 (±1) minute ignore delay.
This LED being turned "On", will
have no other affect on unit
operation. It is an indicator only.
Fan Failure Switch
When the "Fan Failure" switch is
wired to the RTOM, the LED will
remain flashing the entire time the
fan proving switch is closed,
indicating a fan failure, and it will
shut the unit operations down.

RT-SVX20A-E4

Maintenance
Zone Temperature Sensor (ZTS) Test
Note:These procedures are not for
programmable or digital models
and are conducted with the Zone
Sensor
Module electrically removed from
the system.
Test 1
Zone Temperature Thermistor
(ZTEMP)
This component is tested by
measuring the resistance between
terminals 1 and 2 on the Zone
Temperature Sensor.

RT-SVX20A-E4

Table 55 - Thermistor Resistance /
Temperature Chart

Temperature/resistance coefficient is
negative.
Temperature

Resistance

(°C)

(kOhms)

-21

103

-15

74.65

-9

54.66

-7

46.94

-4

40.4

-1

34.85

2

30.18

4

26.22

7

22.85

10

19.96

13

17.47

16

15.33

18

13.49

21

11.89

24

10.5

27

9.297

29

8.247

32

7.33

35

6.528

38

5.824

65

Maintenance
To Test Humidity Sensors
Return Air Humidity Sensor

ECA

RAH/RAE

Outdoor Humidity Sensor

ECA

OAH/OAE

To test this circuit, place a DC milliamp meter in series with either of the leads to the humidity sensor. If the reading
is 0ma, polarity may be reversed. Reverse + & - and retest. If the reading does not correspond to the table below,
check the output voltage from the ECA with the sensor disconnected. It should be approximately 20VDC. If so, and
all connections are intact, replace the sensor. If 20VDC is not present, yet the ECA green LED is on, the ECA module
has failed.Humidity sensor accuracy : +/-10% RH.
Table 56 - Humidity sensor test

66

RH%

DCma

RH%D

100%

20.000

52.6

97.7

19.636

51.7

95.5

19.286

50.8

93.4

18.947

Cma

RH%

DCma

12.414

31.2

9.000

12.273

30.8

8.926

12.135

30.3

8.852

50.0

12.000

29.9

8.780

91.4

18.621

49.2

11.868

29.4

8.710

89.4

18.305

48.4

11.739

29.0

8.640

87.5

18.000

47.6

11.613

28.6

8.571

85.7

17.705

46.8

11.489

28.1

8.504

83.9

17.419

46.1

11.368

27.7

8.438

82.1

17.143

45.3

11.250

27.3

8.372

80.5

16.875

44.6

11.134

26.9

8.308

78.8

16.615

43.9

11.020

26.5

8.244
8.182

77.3

16.364

43.2

10.909

26.1

75.7

16.119

42.5

10.800

25.8

8.120

74.3

15.882

41.8

10.693

25.4

8.060

72.8

15.652

41.2

10.588

25.0

8.000

71.4

15.429

40.5

10.485

24.6

7.941

70.1

15.211

39.9

10.385

24.3

7.833

68.8

15.000

39.3

10.286

23.9

7.826

67.5

14.795

38.7

10.189

23.6

7.770

66.2

14.595

38.1

10.093

23.2

7.714

65.0

14.400

37.5

10.000

22.9

7.660

63.8

14.211

36.9

9.908

22.5

7.606

62.7

14.026

36.4

9.818

22.2

7.552

61.5

13.846

35.8

9.730

21.9

7.500

60.4

13.671

35.3

9.463

21.6

7.448

59.4

13.500

34.7

9.558

21.2

7.397

58.3

13.333

34.2

9.474

20.9

7.347

57.3

13.171

33.7

9.391

20.6

7.297

56.3

13.012

33.2

9.310

20.3

7.248

20.0

7.200

55.4

12.857

32.7

9.231

54.4

12.706

32.2

9.153

53.5

12.558

31.7

9.076

RT-SVX20A-E4

Notes

RT-SVX20A-E4

67

Literature Order Number

RT-SVX20A-E4

Date

0606

Supersedes

RT-SVX20A-E4_1105

Literature Stocking Location

Europe

www.trane.com

Trane has a policy of continuous product and product data improvement and reserves the right to
change design and specifications without notice. Only qualified technicians should perform the
installation and servicing of equipment referred to in this publication.

For more information, contact your local
sales office or e-mail us at comfort@trane.com

American Standard Europe BVBA
Registered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium



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