Trane Rt Svx19A E4 Users Manual

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Voyager™ II Rooftop units

Cooling only TKD/TKH 155 175 200 250

Reversible WKD/WKH 125 155 200

Gas-Fired YKD/YKH 155 175 200 250

R22 - R407C Refrigerant

Installation

Operation

Maintenance

RT-SVX19A-E4

Foreword

These instructions are given as a

guide to good practice in the

installation, start-up, operation, and

maintenance by the user, of Trane

TKD/TKH, WKD/WKH and YKD/YKH

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.

TKD/TKH units are designed to

operate in cooling mode only, with

optional auxiliary heat (electric

heater or hot water coil).

WKD/WKH can operate in cooling

mode or heating mode by reversing

the refrigeration cycle with or

without auxiliary heat.

YKD/YKH units are designed to

operate In cooling mode and

equipped with a gas fired heating

module.

TKD/TKH, WKD/WKH and YKD/YKH

units are assembled, pressure

tested, dehydrated, charged and run

tested before shipment.

Warnings and cautions

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.

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.

Safety recommendations

To avoid death, injury, equipment or

property damage, the following

recommendations should be

observed during maintenance and

service visits:

1. The maximum allowable

pressures for system leak testing

on low and high pressure side

are given in the chapter

"Installation". Always provide a

pressure regulator.

2. Disconnect the main power

supply before any servicing on

the unit.

3. Service work on the refrigeration

system and the electrical system

should be carried out only by

qualified and experienced

personnel.

Reception

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.

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.

General information

RT-SVX19A-E42

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.

Refrigerant

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.

Maintenance contract

It is strongly recommended that you

sign a maintenance contract with

your local Service Agency. This

contract provides regular

maintenance of your installation by

a specialist in our equipment.

Regular maintenance ensures that

any malfunction is detected and

corrected in good time and

minimizes the possibility that

serious damage will occur. Finally,

regular maintenance ensures the

maximum operating life of your

equipment. We would remind you

that failure to respect these

installation and maintenance

instructions may result in

immediate cancellation of the

warranty.

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.

General information

3RT-SVX19A-E4

RT-SVX19A-E44

Contents

Foreword 2

Warnings and Cautions 2

Safety recommendations 2

Reception 2

Warranty 3

Refrigerant 3

Maintenance contract 3

Storage 3

Training 3

Installation 6

Reception of units 6

Roof curb installation 7

Dimensions/Weights/Clearances 8

Installing the unit 10

Connection of duct network 11

Condensate drain piping 12

Gas pipework installation 13

Filter installation 14

Supply fan adjustment 15

Component air pressure drops 17

Supply fan performances 20

Electrical connection 26

Controls 31

Control wiring 31

CO2sensors 33

Remote potentiometer 36

Fire thermostat 37

Clogged filter detector 38

Smoke detector 38

High temperature safety thermostat 38

Remote fault relay 38

Thermostats 38

Communication Interfaces 39

Contents

5RT-SVX19A-E4

Unit Options 40

Hot water coil 40

Electric Heater 41

Soft Starter 41

0 - 25% fresh air hood 42

Barometric relief 43

Operation 44

Operation with a conventional thermostat 44

Setting the economizer 47

Test procedures 49

Test modes 50

Unit start-up 51

Cooling without an Economizer 54

Low Ambient Operation 55

Cooling with an Economizer 55

Economizer Set-Up 56

ReliaTel™ Control Heating Operation 56

Ignition Module 56

Final installation checklist 57

Maintenance 58

End user routine maintenance 58

Service technician maintenance 59

Troubleshooting 60

Installation

RT-SVX19A-E46

General information :The

installation must conform to all

local standards and regulations.

Reception of units

Rooftop unit

The unit is supplied on a wooden

frame. It is recommended to check

the machine's condition upon

reception.

There are two ways to handle the

unit:

1. Use the openings in the wooden

frame to handle the machine

using a fork lift, in accordance

with applicable safety

regulations.

2. Use a lifting beam correctly

adjusted to fit the unit

(Figure 1a).

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.

4 shackles and 4 slings are required.

Use a lifting beam to prevent the

cables pressing too hard on top of

the unit during lifting.

Figure 1a indicates the position of

the center of gravity and the lifting

recommendations.

Important: For unit to fit on the

roof curb the fork lift pockets must

be removed.

Figure 1a - Unit handling

1 = Clevis

2 = Base Rail

3 = Spreader Bar

L = Length (Center of Gravity)

W = Width (Center of Gravity)

Refer to Table 2 for weights and center of gravity.

A

B

Roof curb Installation

(TKD-WKD-YKD

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. Two types of roof

curbs are available: The standard

version to allow the installation of

the unit on a flat roof and the

adjustable version for a sloped roof

installation. (See Figure 1b for the

maximum slope correction of

adjustable roofcurb.)

The adjustable roof curbs are

supplied pre-assembled on a skid.

Two types of self-adhesive seals are

provided separately. (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.

Instructions for the roof curb

assembly and installation with curb

dimensions are provided with each

roof curb kit.

Table 1 - Sling lengths and maximum unit weight

Figure 1b - Maximum slope correction of adjustable roof curb.

Figure 2 - Waterproofing

1 = Roofcurb

2 = Roof membrane

3 = Seal

4 = Rooftop

4

12

3

Unit size A (mm) B (mm) Maximm weight

kg

125 3000 1900 644

155 3000 1900 773

175 3000 1900 810

400 3500 2200 1001

500 3500 2200 1027

Installation

7RT-SVX19A-E4

Installation

RT-SVX19A-E48

Dimensions/Weights/Clearances

Figure 3 - Minimum clearances

Table 2 - Minimum clearances (mm)

The structure accommodating the unit(s) must be designed to support the

equipment in operation, as a minimum. Refer to Table 3a and the space

requirement plan.

Minimum clearance

UNIT 12345

YKD/YKH 155 1900 1800 1220 1000 1300

YKD/YKH 175 1900 1800 1220 1000 1300

YKD/YKH 200 1900 1800 1220 1000 1300

YKD/YKH 250 1900 1800 1220 1000 1300

TKD/TKH 155 1900 1800 1220 1000 1300

TKD/TKH 175 1900 1800 1220 1000 1300

TKD/TKH 200 1900 1800 1220 1000 1300

TKD/TKH 250 1900 1800 1220 1000 1300

WKD/WKH 125 1900 1800 1220 1000 1300

WKD/WKH 155 1900 1800 1220 1000 1300

WKD/WKH 200 1900 1800 1220 1000 1300

Installation

9RT-SVX19A-E4

Installation

Table 3a - Weigths & center of gravity (Figure 1)

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

Table 3b - Weights of Options & accessories

Notes :

Net weight should be added to unit weight when ordering factory installed accessories.

To estimate shipping weight add 2.3 kg to net weight.

UNIT Standard Roof

Curb Adjustable Roof

Curb Economizer Manual Outside

Air Damper

Motorized

Outside Air

Damper Electric heater Hot water coil

YKD 155 93 220 30 15 27

YKD 175 93 220 30 15 27

YKD 200 107 260 37 15 34

YKD 250 107 260 37 15 34

YKH 155 30 15 27

YKH 175 30 15 27

YKH 200 37 15 34

YKH 250 37 15 34

TKD 155 93 220 30 15 27 14 85

TKD 175 93 220 30 15 27 14 85

TKD 200 107 260 37 15 34 18 110

TKD 250 107 260 37 15 34 18 110

TKH 155 30 15 27 14

TKH 175 30 15 27 14

TKH 200 37 15 34 18

TKH 250 37 15 34 18

WKD 125 93 180 20 15 27 18 85

WKD 155 93 220 30 15 27 18 85

WKD 200 107 260 37 15 34 18 110

WKH 125 20 15 27 18

WKH 155 30 15 27 18

WKH 200 37 15 34 18

Maximum weight Corner Weight (1) Center of Gravity

Shipping Net A B C D Length (L) Width (W)

UNIT (kg) (kg) (kg) (kg) (kg) (kg) (mm) (mm)

YKD/YKH 155 866 698 243 176 118 162 1143 737

YKD/YKH 175 902 735 251 188 127 169 1168 737

YKD/YKH 200 1128 920 324 242 151 203 1321 838

YKD/YKH 250 1154 946 327 251 159 208 1346 838

TKD/TKH 155 790 623 219 159 103 142 1143 711

TKD/TKH 175 827 660 227 172 112 149 1168 711

TKD/TKH 200 1050 841 297 221 138 185 1321 838

TKD/TKH 250 1075 866 300 230 145 206 1346 838

WKD/WKH 125 792 625 218 159 105 144 1143 711

WKD/WKH 155 809 642 228 162 105 147 1143 711

WKD/WKH 200 1080 871 291 226 155 199 1346 889

Installation

RT-SVX19A-E410

Installing the unit

1) 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.

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.

2) 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

Figure 4

1 = Frame

Figure 5

1 = Concrete slab

RT-SVX19A-E4

Installation

11RT-SVX19A-E4RT-SVX19A-E4

Connection of duct

network

1) Downflow discharge units

(TKD,WKD,YKD)

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

(TKH,WKH,YKH)

• 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 TKH, WKH or

YKH 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 6 - Condensate Drain location

1 = Condensate drain connection

A = TKH/YKH 155, 175, 200, 250 - WKH 125,155, 200

B = TKD/YKD 155, 175, 200, 250 - WKD 125,155,200

Installation

RT-SVX19A-E412

Figure 7 - Condensate drain line connection

1 = Static pressure drain pan

2 = Panel enclosure

3 = 42mm PVC drain

4 = Cleanout plug

RT-SVX19A-E4

Condensate drain piping

A 42mm PVC 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 7.

Installation

13RT-SVX19A-E4

Gas pipework installation

The installation must conform to all

standards and regulations.

The gas supply pipework and gas

stop valve to be installed near the

unit must be sized so as to assure

the gas pressure is sufficient at the

unit inlet when operating at full

load.

CAUTION! Should the pressure at

the unit valve gas inlet be higher

than 0.035 bar, an expansion valve

must be installed.

The pipework must be self-

supporting and the final connection

to the burner must be made by a

flexible pipe. Provide a dust

protection (filter) upstream the unit

connection.

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 4 - Gas burner models

See Table 38 for burner

performance.

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 37.

Note:To operate with propane gas,

the burner is fitted with a pressure

limiter (supplied by Trane)

Unit Burner size

YKD/H 155 G350A

YKD/H 175 G350A

YKD/H 200 G350A

YKD/H 250 G350A

Figure 8 - Typical gas supply Pipework

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)

Installation

RT-SVX19A-E414

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

Filter installation

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.

Each unit ships with 40 or 50 mm

thick filters. Number and size of

filters is determined by size and

configuration of the unit.

Table 5 - Filter arrangement

UNIT EU2/G2 EU4/G4

Qty Size Qty Size

YKH/YKD 155 2(508x508x50) 2(498x498x40)

4(508x635x50) 4(500x625x50)

YKH/YKD 175 2(508x508x50) 2(498x498x40)

4(508x635x50) 4(500x625x50)

YKH 200 8(508x635x50) 8(500x625x50)

YKD 200 4(508x508x50) 4(498x498x40)

4(508x635x50) 4(500x625x50)

YKH 250 8(508x635x50) 8(500x625x50)

YKD 250 4(508x508x50) 4(498x498x40)

4(508x635x50) 4(500x625x50)

TKH/TKD 155 2(508x508x50) 2(498x498x40)

4(508x635x50) 4(500x625x50)

TKH/TKD 175 2(508x508x50) 2(498x498x40)

4(508x635x50) 4(500x625x50)

TKH 200 8(508x635x50) 8(500x625x50)

TKD 200 4(508x508x50) 4(498x498x40)

4(508x635x50) 4(500x625x50)

TKH 250 8(508x635x50) 8(500x625x50)

TKD 250 4(508x508x50) 4(498x498x40)

4(508x635x50) 4(500x625x50)

WKH/WKD 125 2(508x508x50) 2(498x498x40)

4(508x635x50) 4(500x625x50)

WKH/WKD 155 2(508x508x50) 2(498x498x40)

4(508x635x50) 4(500x625x50)

WKH 200 8(508x635x50) 8(500x625x50)

WKD 200 4(508x508x50) 4(498x498x40)

4(508x635x50) 4(500x625x50)

Installation

15RT-SVX19A-E4

Supply fan adjustment

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.

a. Obtain the design airflow rate

and the design external static

pressure drop through the

distribution system.

b. Add static pressure drop of the

accessories installed on the

unit. (Table 7,8 & 9)

c. 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 20 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 6.

Table 6 - Motor sheave / Fan speed

Fan Speed (RPM)

Standard Drive

6 turns 5 turns 4 turns 3 turns 2 turns 1 turns

UNIT Open Open Open Open Open Open Closed

YKD/YKH 155 566 601 637 672 708 743 N/A

YKD/YKH 175 724 769 815 860 906 951 N/A

YKD/YKH 200 513 550 586 623 659 696 N/A

YKD/YKH 250 588 619 650 681 712 743 N/A

TKD/TKH 155 566 601 637 672 708 743 N/A

TKD/TKH 175 724 769 815 860 906 951 N/A

TKD/TKH 200 513 550 586 623 659 696 N/A

TKD/TKH 250 588 619 650 681 712 743 N/A

WKD/WKH 125 533 566 600 633 667 700 N/A

WKD/WKH 155 566 601 637 672 708 74 3 N/A

WKD/WKH 200 513 550 586 623 659 696 N/A

Fan Speed (RPM)

Oversized Drive

6 turns 5 turns 4 turns 3 turns 2 turns 1 turns

UNIT Open Open Open Open Open Open Closed

YKD/YKH 155 672 714 756 798 840 882 N/A

YKD/YKH 175 791 840 890 939 989 1038 N/A

YKD/YKH 200 680 711 742 773 804 835 N/A

YKD/YKH 250 690 722 754 786 818 850 N/A

TKD/TKH 155 672 714 756 798 840 882 N/A

TKD/TKH 175 791 840 890 939 989 1038 N/A

TKD/TKH 200 680 711 742 773 804 835 N/A

TKD/TKH 250 690 722 754 786 818 850 N/A

WKD/WKH 125 724 769 815 860 906 951 N/A

WKD/WKH 155 513 550 586 623 659 696 N/A

WKD/WKH 200 588 619 650 681 712 743 N/A

Installation

RT-SVX19A-E416

To increase airflow

Loosen variable sheave set screw

and turn sheave clockwise.

To decrease airflow

Loosen variable sheave set screw

and turn sheave counter-clockwise.

To increase belt tension

Loosen the nut (next to the idler

sheave) that secures the sheave in

place. With a wrench, apply

pressure clockwise on the outside

nut (round headed one), until

tension desired is reached. While

holding pressure with the tension

nut, retighten the nut next to the

idler sheave.

Figure 9 - Typical fan, motor, and sheave

assembly

A = Fan Housing

B = Terminal Block

C = Fan Sheave

D = Plastic Bushing

E = Belt Tension Adjustment Bolt

F = Idler Pulley

Table 6b - Belt tensioning

TK* / YK* /

WK* Motor kW

Fan pulley

Ty p e /

diam. (mm)

Fan pulley

Ty p e /

diam. (mm)

Belt type

/ lengh (mm)

Belt

deflexion

(mm)

Deflexion

effort

mini kg

Deflexion

effort

maxi kg

Belt tension

mini

N

Belt tension

maxi

N

125 1,5 BK90 / 222 1VP44 / 105 BX68 / 1727 5,89 2,4 2,9 400 500

155 1,5 BK85 / 210 1VP44 / 105 BX68 / 1727 6 2,4 2,9 400 500

175 3BK130 / 324 1VP44 / 105 BX75 / 1905 6,05 2,4 2,9 400 500

200 3BK160 / 400 1VL40 / 95 BX90 / 2286 6,96 2,4 2,9 400 500

250 4,6 BK190 / 476 1VP50 / 121 BX96 / 2438 6,91 2,4 2,9 400 500

125 3BK130 / 324 1VP44 / 105 BX75 / 1905 5,85 2,4 2,9 400 500

155 3BK140 / 349 1VP44 / 105 BX77 / 1955 6,17 2,4 2,9 400 500

175 4,6 BK140 / 349 1VP56 / 136 BX75 / 1905 5,45 2,4 2,9 400 500

200 4,6 BK190 / 476 1VP56 / 136 BX96 / 2438 6,87 2,4 2,9 400 500

250 4,6 BK190 / 476 1VP56 / 136 BX96 / 2438 6,32 2,4 2,9 400 500

Installation

17RT-SVX19A-E4

Component air pressure drops

Table 7 - YKD/YKH Pressure drop through accessories

Filter Filter Economizer Economizer

Airflow EU2/G2 EU4/G4 100%

outside air

100%

return air

YKD/YKH 155

6800 13 27 8 6

7650 16 30 10 7

8500 19 34 12 8

9350 22 37 14 9

10200 26 40 16 10

YKD/YKH 175

7870 17 30 10 7

8860 21 34 12 8

9850 25 38 15 9

10840 30 43 17 11

11830 35 47 20 12

YKD 200

8970 12 26 29 6

10090 15 30 37 8

11210 19 33 45 9

12330 23 37 55 11

13450 27 41 65 13

YKH 200

8970 11 23 33 6

10090 14 26 41 8

11210 17 29 51 9

12330 20 33 61 11

13450 23 36 72 13

YKD 250

11280 18 32 46 10

12690 24 36 58 12

14100 29 41 71 14

15510 36 46 86 17

16920 43 51 102 19

YKH 250

11280 17 30 52 10

12690 21 34 65 12

14100 26 38 80 14

15510 31 43 96 17

16920 36 47 114 19

Installation

RT-SVX19A-E418

Table 8 - TKD/TKH Pressure drop through accessories

Filter Filter Economizer Economizer Electric Hot water coil

Airflow EU2/G2 EU4/G4 100%

outside air

100%

return air heater Downflow only

TKD/TKH 155

6800 13 27 8 6 7 33

7650 16 30 10 7 9 40

8500 19 34 12 811 48

9350 22 37 14 913 56

10200 26 40 16 10 16 65

TKD/TKH 175

7870 17 30 10 710 42

8860 21 34 12 813 51

9850 25 38 15 916 61

10840 30 43 17 11 19 72

11830 35 47 20 12 23 83

TKD 200

8970 12 26 29 613 33

10090 15 30 37 817 40

11210 19 33 45 921 48

12330 23 37 55 11 25 56

13450 27 41 65 13 30 65

TKH 200

8970 11 23 33 613 -

10090 14 26 41 817 -

11210 17 29 51 921 -

12330 20 33 61 11 25 -

13450 23 36 72 13 30 -

TKD 250

11280 18 32 46 10 20 49

12690 24 36 58 12 25 59

14100 29 41 71 14 32 71

15510 36 46 86 17 38 82

16920 43 51 102 19 46 95

TKH 250

11280 17 30 52 10 19 -

12690 21 34 65 12 24 -

14100 26 38 80 14 29 -

15510 31 43 96 17 35 -

16920 36 47 114 19 42 -

Installation

19RT-SVX19A-E4RT-SVX19A-E4

Table 9 - WKD/WKH Pressure drop through accessories

Airflow

Filter

EU2/G2

Filter

EU4/G4

Economizer

100%

outside air

Economizer

100%

return air

Electric

heater

Hot water coil

Downflow only

WKD/WKH 125

5720 9 21 6 5 4 37

6430 11 24 7 6 6 45

7140 14 27 9 6 7 53

7850 17 30 10 7 9 62

8560 20 33 12 812 72

WKD/WKH 155

6800 13 27 8 6 7 33

7650 16 30 10 7 9 40

8500 19 34 12 811 48

9350 22 37 14 913 56

10200 26 40 16 10 16 65

WKD 200

8970 12 26 29 613 33

10090 15 30 37 817 40

11210 19 33 45 921 48

12330 23 37 55 11 25 56

13450 27 41 65 13 30 65

WKH 200

8970 11 23 33 613 -

10090 14 26 41 817 -

11210 17 29 51 921 -

12330 20 33 61 11 25 -

13450 23 36 72 13 30 -

Installation

RT-SVX19A-E420

Supply fan performances

Table 10 - YK 155 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

6800 699 1.4 7 719 1.55 739 1. 6 3 758 1.71 777 1. 7 9 795 1. 86 813 1.9 4 830 2.01 847 2.09 863 2.16

7650 729 1.8 2 74 9 1.92 768 2.01 787 2.1 806 2.19 824 2.28 841 2.37 858 2.46 875 2.55

8500 764 2.25 782 2.35 800 2.45 818 2.55

9350

10200

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

6800 564 1 587 1.0 7 610 1.15 633 1. 2 3 655 1. 31 677 1.3 9

7650 560 1.14 583 1.23 605 1. 3 1 627 1.39 648 1. 4 8 669 1. 56 690 1.6 5 710 1. 74

8500 559 1. 3 1 584 1.41 606 1. 5 628 1. 6 649 1.69 669 1. 7 8 689 1. 87 708 1.9 7 727 2.06 746 2.16

9350 610 1. 72 633 1.8 3 654 1. 94 675 2.04 694 2.14 713 2.24 732 2.34 750 2.45 767 2.55 785 2.65

10200 661 2.21 683 2.33 703 2.45 722 2.56

Installation

21RT-SVX19A-E4

Table 11 - YK 175 External static pressure

Standard drive

Oversized drive

Table 12 - YK 200 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 633 2.14 652 2.27 670 2.4 688 2.54 705 2.67 721 2.8 737 2.93 753 3.06 768 3.19 783 3.31

10090 660 2.6 679 2.75 697 2.91 714 3.06 731 3.21 747 3.35 763 3.5 778 3.65 793 3.8 808 3.95

11210 690 3.16 707 3.31 724 3.47 74 1 3.64 757 3.81 773 3.98 789 4.14 804 4.31

12330 724 3.84 739 3.99 754 4.15 770 4.31

13450

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 530 1.5 551 1. 6 1 572 1.74 593 1.8 7 614 2

10090 529 1.7 1 548 1. 8 3 567 1.94 586 2.06 604 2.18 623 2.31 641 2.45

11210 530 1. 99 551 2.12 570 2.24 588 2.36 606 2.48 623 2.61 640 2.74 657 2.87 673 3.01

12330 548 2.41 573 2.58 594 2.73 613 2.87 630 3 646 3.13 662 3.27 678 3.4 693 3.54 709 3.69

13450 593 3.1 617 3.29 638 3.46 656 3.61 672 3.76 688 3.9 703 4.05 718 4.19

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

7870 857 2.12 879 2.22 900 2.33 921 2.44 942 2.55 962 2.65 981 2.75 1000 2.86 1018 2.96 1036 3.06

8860 907 2.7 927 2.81 946 2.92 965 3.03 985 3.15

9850 964 3.42 981 3.53 998 3.64 1016 3.76 1033 3.88

10840 1024 4.29

11830

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

7870 726 1. 58 74 8 1. 66 770 1.74 791 1. 8 3 813 1.92 835 2.02

8860 751 1.9 6 772 2.05 792 2.13 811 2.22 831 2.31 850 2.4 869 2.5 888 2.6

9850 779 2.41 801 2.52 822 2.62 841 2.72 859 2.82 877 2.91 895 3.01 912 3.11 929 3.21 947 3.31

10840 852 3.19 874 3.31 893 3.42 911 3.53 928 3.64 945 3.75 961 3.85 977 3.96 993 4.07 1009 4.18

11830 926 4.12 946 4.25

RT-SVX19A-E4

Installation

RT-SVX19A-E422

Table 13 - YK 250 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

9870 662 1.9 2 681 2.03 699 2.15 717 2.26 735 2.36 752 2.48 768 2.59 784 2.69 800 2.81 815 2.91

11280 702 2.48 718 2.59 734 2.70 750 2.82 767 2.94 783 3.08 800 3.20 815 3.33 831 3.46 846 3.59

12690 748 3.19 762 3.30 776 3.42 791 3.54 805 3.66 819 3.79 834 3.92 848 4.05

14100 797 4.05 810 4.17 823 4.30 836 4.43 849 4.55

15510 848 5.08

16920

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

9870 606 1.6 2 625 1. 7 2 643 1.82

11280 603 1.8 8 620 1. 9 7 637 2.07 653 2.17 670 2.27 686 2.37

12690 602 2.18 622 2.30 640 2.41 657 2.52 673 2.63 688 2.74 704 2.85 719 2.96 733 3.08

14100 639 2.77 660 2.92 679 3.06 696 3.19 712 3.32 727 3.44 742 3.56 756 3.68 770 3.80 784 3.92

15510 699 3.65 719 3.82 736 3.98 753 4.13 768 4.27 782 4.40 796 4.54 810 4.67 823 4.81 836 4.94

16920 758 4.70 777 4.89 794 5.06 810 5.23 824 5.39 838 5.54

Table 14 - TK 155 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

6800 787 1.2 8 815 1.37 842 1. 4 6 868 1.54

7650 808 1.5 3 836 1. 6 3 862 1.74

8500 833 1.8 3 858 1. 9 3 883 2.04

9350 862 2.18 885 2.29 909 2.4

10200 894 2.58

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

6800 565 0.7 599 0.77 633 0.85 665 0.93 697 1.0 2 728 1. 1 758 1.19

7650 571 0.82 603 0.9 634 0.99 665 1.0 7 694 1. 16 723 1. 25 752 1.3 4 780 1. 4 4

8500 580 0.97 613 1.0 7 643 1. 16 672 1. 25 700 1. 3 4 727 1.43 754 1. 5 3 781 1.63 807 1. 7 3

9350 590 1. 13 624 1. 2 4 656 1.35 684 1. 4 6 711 1. 55 738 1.6 5 763 1. 75 788 1.8 6 813 1.96 838 2.07

10200 637 1.4 4 670 1. 5 7 699 1.69 727 1. 8 1 753 1.92 777 2.02 801 2.13 825 2.24 848 2.35 871 2.46

Installation

23RT-SVX19A-E4

Table 15 - TK 175 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

7870 842 1.7 9 869 1. 9 1 896 2.03 921 2.15 946 2.27 970 2.39 994 2.51 1016 2.63 1038 2.75

8860 877 2.19 901 2.31 925 2.43 949 2.56 973 2.69 997 2.83 1020 2.96 1043 3.1

9850 919 2.7 941 2.82 962 2.94 984 3.07 1006 3.2 1027 3.33

10840 965 3.3 985 3.43 1005 3.55 1025 3.68 1044 3.82

11830 1015 4.02 1033 4.15

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

7870 593 0.95 623 1.0 3 651 1. 11 679 1.19 706 1.2 8 733 1. 37 761 1. 4 7 788 1. 57 815 1.6 8

8860 623 1. 2 1 653 1.31 680 1. 4 706 1. 49 731 1.5 8 756 1. 6 7 780 1.77 805 1. 8 7 829 1.97 853 2.08

9850 687 1. 6 4 714 1.7 5 739 1. 85 763 1.9 5 786 2.05 809 2.15 831 2.25 853 2.36 875 2.47 897 2.58

10840 750 2.16 775 2.28 799 2.4 821 2.51 843 2.62 864 2.73 884 2.84 905 2.95 925 3.07 945 3.18

11830 814 2.78 837 2.92 860 3.05 881 3.17 901 3.29 921 3.41 940 3.53 959 3.65 978 3.77 996 3.89

Table 16 - TK 200 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 710 1. 86 735 2 759 2.14 783 2.27 805 2.41 827 2.55

10090 729 2.2 753 2.35 777 2.5 800 2.66 823 2.81

11210 752 2.6 774 2.75 797 2.92 819 3.08 841 3.25

12330 778 3.08 799 3.24 820 3.4 841 3.57

13450 808 3.64 828 3.81

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 512 0.98 542 1.0 9 571 1. 21 600 1. 33 629 1.4 5 656 1. 5 8 684 1.72

10090 519 1. 16 547 1. 2 8 575 1. 39 601 1.51 627 1. 6 4 653 1. 77 679 1.9 1 704 2.05

11210 528 1. 36 557 1.5 584 1. 6 3 610 1. 76 634 1.89 658 2.02 682 2.16 705 2.3 729 2.44

12330 537 1.5 8 568 1. 74 596 1. 9 622 2.05 647 2.19 670 2.33 692 2.47 714 2.62 735 2.77 757 2.92

13450 580 2.01 609 2.19 636 2.37 661 2.54 684 2.7 706 2.85 728 3.01 748 3.16 768 3.32 788 3.48

Installation

RT-SVX19A-E424

Table 17 - TK 250 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

9870 714 1.8 6 733 1. 94 751 2.02 769 2.1 786 2.17 802 2.25 818 2.32 834 2.39 849 2.46 864 2.53

11280 757 2.45 775 2.55 793 2.65 810 2.74 827 2.84 843 2.93 859 3.02 874 3.11 889 3.19 904 3.28

12690 803 3.14 820 3.26 837 3.38 853 3.49 869 3.61 885 3.72 901 3.83 916 3.93 931 4.04

14100 850 3.95 866 4.09 883 4.23 898 4.37

15510

16920

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

9870 585 1. 31 609 1. 4 2 632 1. 51 654 1.6 675 1. 6 9 695 1.78

11280 606 1.6 3 633 1. 77 657 1.9 679 2.02 700 2.13 720 2.24 739 2.35

12690 599 1.8 628 1. 9 7 655 2.15 681 2.31 704 2.47 726 2.62 74 7 2.76 766 2.89 785 3.02

14100 631 2.2 654 2.38 679 2.57 705 2.76 729 2.96 752 3.14 774 3.32 795 3.49 814 3.65 832 3.8

15510 690 2.9 711 3.08 733 3.28 756 3.5 779 3.71 801 3.93 822 4.13 842 4.33

16920 749 3.73 768 3.92 788 4.14 809 4.36

Table 18 - WK 125 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

5720 772 1.0 6 802 1. 15 830 1. 2 4 857 1.33 883 1. 4 1 909 1.5 933 1.5 9 957 1. 6 8

6430 786 1.2 3 815 1.32 843 1. 4 2 871 1.52 897 1. 6 2 922 1. 72 947 1.8 2

7140 800 1. 4 829 1. 51 857 1. 6 2 884 1. 73 911 1.8 4 936 1. 9 4 960 2.05

7850 816 1.5 9 844 1. 7 872 1.82 898 1. 9 4 925 2.06 950 2.18

8560 835 1.8 2 862 1. 9 4 888 2.05 913 2.18 939 2.3

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 562 0.55 601 0.63 639 0.71 675 0.8 709 0.89 741 0.98

10090 548 0.6 584 0.68 620 0.76 655 0.84 690 0.93 723 1. 03 755 1.13

11210 544 0.68 578 0.75 611 0.83 644 0.91 676 1 708 1.0 9 739 1.19 770 1. 29

12330 542 0.77 577 0.85 609 0.93 640 1.01 670 1. 1 700 1. 19 730 1. 2 8 759 1. 38 788 1.4 8

13450 541 0.85 578 0.96 612 1. 0 5 643 1. 14 671 1. 23 699 1.3 2 727 1. 4 1 755 1.51 782 1. 6 1 809 1.71

Installation

25RT-SVX19A-E4

Table 19 - WK 155 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

6800 787 1.2 9 816 1.38 843 1. 4 7

7650 807 1.5 4 834 1. 6 4 861 1.74

8500 832 1.8 3 857 1. 9 4 882 2.04

9350 861 2.18 884 2.29

10200 893 2.58

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

6800 566 0.7 599 0.77 632 0.85 664 0.93 696 1.0 2 727 1. 11 757 1. 2

7650 571 0.82 604 0.9 634 0.99 664 1.0 7 694 1. 16 723 1. 25 751 1.3 4 779 1. 4 4

8500 578 0.95 612 1.0 5 644 1. 15 673 1. 25 700 1. 3 4 727 1.43 754 1. 5 3 780 1.63 806 1. 7 3

9350 586 1. 0 9 622 1.22 655 1. 3 3 685 1.44 712 1.55 739 1.6 5 764 1. 75 788 1.8 6 813 1. 96 837 2.07

10200 633 1.3 9 667 1. 5 3 698 1.66 726 1. 7 8 753 1.9 778 2.02 803 2.13 826 2.24 848 2.35 871 2.47

Table 20 - WK 200 External static pressure

Standard drive

Oversized drive

External Static Pressure (Pa)

275 300 325 350 375 400 425 450 475 500

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 717 1. 9 742 2.04 766 2.17 789 2.31 811 2.45 833 2.58

10090 737 2.25 761 2.4 785 2.56 808 2.71 830 2.87

11210 761 2.66 784 2.82 806 2.98 828 3.15

12330 789 3.16 810 3.32 831 3.49

13450 820 3.75 840 3.91

14570

15690

16810

External Static Pressure (Pa)

25 50 75 100 125 150 175 200 225 250

m3/h RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

8970 521 1.01 550 1. 12 579 1. 2 4 608 1.36 636 1. 4 9 664 1.62 691 1. 76

10090 529 1.2 557 1. 3 2 584 1. 44 610 1.56 636 1. 6 8 662 1. 82 687 1. 9 5 712 2.1

11210 540 1. 42 569 1.5 6 595 1. 6 9 621 1.82 645 1. 9 5 669 2.08 692 2.22 715 2.36 738 2.51

12330 552 1.6 6 582 1. 8 2 610 1. 98 635 2.13 659 2.27 681 2.41 704 2.55 725 2.7 747 2.85 768 3

13450 597 2.11 625 2.3 651 2.47 675 2.64 698 2.8 720 2.95 741 3.11 761 3.26 781 3.42 801 3.58

14570 638 2.59 666 2.8 692 3.01 716 3.2 740 3.39 762 3.58 783 3.75 803 3.92

15690 677 3.1 707 3.37 735 3.61 761 3.85

16810 715 3.66 748 3.98

Installation

RT-SVX19A-E426

Electrical connection

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.

Factory supplied Disconnect switch

(Option)

The disconnect switch is factory

mounted. It is located on the side of

the Electrical panel and equipped

with fuses as standard.

Over current protection

The branch circuit feeding the unit

must be protected in accordance

with national or local codes and

max unit amps indicated in Table 21

to 28.

Power wiring

The unit power supply must be

provided by 4-wire cable with cross-

sectional areas complying with

legislation.

The power supply cables must be

laid in leak-tight pipes and pass

through the bottom of the electric

panel. The cables must not be taut.

Appropriate connectors must be

provided. Flexible pipe supports are

required to prevent noise

transmission in the building

structure. Ensure all the connections

are tightened.

Note:

1. earthing must be executed in

accordance with local legislation.

2. the machines are designed for a

short-circuit current of 10 kA. In

the event of a higher application,

contact your Trane sales office.

Figure 10 - Power supply

TKD/TKH, WKD/WKH units:

YKD/YKH units:

1 = Power supply from the bottom or from the side.

Installation

27RT-SVX19A-E4

Scroll compressors

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.

The "ABC" indicator on the face of

the phase indicator will glow if

phase is ABC for terminals L1, L2,

L3.

CAUTION! 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 unit.

CAUTION! Units with Scroll

compressors are not equipped with

crankcase heaters.

WARNING !

Disconnect all power,including

remote disconnects, and discharge

all capacitors before servicing.

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.

Table 21 - Electrical data - YKD/YKH Unit Wiring

Electrical Characteristics Unit amps

UNIT MPS

Standard Evaporator

Fan Motor

Oversized Evaporator

Fan Motor

Minimum

Circuit

Ampacity

Maximum

Overcurrent

Protective

Device (Fuse

or Circuit

Breaker)

Minimum

circuit

ampacity

Maximum

Overcurrent

Protective

Device (Fuse

or Circuit

Breaker)

Without Electric heat option

TKD/H 155 400/3/50 35 50 36.9 50

TKD/H 175 400/3/50 41 50 41.9 50

TKD/H 200 400/3/50 44 63 44.5 63

TKD/H 250 400/3/50 46.4 63 - -

WKD/H 125 400/3/50 31.9 40 33.8 40

WKD/H 155 400/3/50 35.1 50 37 50

WKD/H 200 400/3/50 50.4 63 50.9 63

YKD/H 155 400/3/50 35.6 50 37.5 50

YKD/H 175 400/3/50 42.3 50 43.2 50

YKD/H 200 400/3/50 44.6 63 45.1 63

YKD/H 250 400/3/50 46.4 63 - -

With Electric heat

TKD/H 155 400/3/50 41 63 43 63

TKD/H 175 400/3/50 43 63 43 63

TKD/H 200 400/3/50 61 80 61 80

TKD/H 250 400/3/50 62 80 - -

WKD/H 125 400/3/50 68 80 69.9 80

WKD/H 155 400/3/50 71.2 80 73.1 80

WKD/H 200 400/3/50 104.5 125 105 125

Installation

RT-SVX19A-E428

Table 22 - Electrical data - TKD/TKH Compressor motor and condenser motor

(1) At Eurovent rating conditions : Indoor return Air (27°C DB / 19°C WB) - Ambiant 35°C

(2) per motor

Table 23 - Electrical data - YKD/YKH Compressor motor and condenser motor

(1) At Eurovent rating conditions : Indoor return Air (27°C DB / 19°C WB) - Ambiant 35°C

(2) per motor

TKD/H TKD/H TKD/H TKD/H

155 175 200 250

Compressor

Number 2 2 2 2

Type Scroll Scroll Scroll Scroll

Model 9T / 5T 10T / 6.7T 9T / 9T 10T / 10T

Rated Amps (1) (A) 15.0 / 8.5 15.1 / 11.4 14.7 / 14.7 15.3 / 15.3

Locked rotor Amps (2) (A) 118 / 65.5 118 / 101 118 / 118 118 / 118

Outdoor Fan

Nominal Airflow (m3/h) 15350 19750 21000 23500

Type Axial Axial Axial Axial

Diameter (mm) 660 660 710 710

Drive type Direct Direct Direct Direct

Number 2 2 2 2

Motor HP (kW) 0.25 0.25 0.56 0.56

Motor Rated Amps (1) (A) 1.6 1.6 2.3 2.3

Motor Locked rotor Amps (2) (A) 3.8 3.8 5.8 5.8

Motor RPM (rpm) 925 925 925 925

YKD/H YKD/H YKD/H YKD/H

155 175 200 250

Compressor

Number 2 2 2 2

Type Scroll Scroll Scroll Scroll

Model 9T / 5T 10T / 6.7T 9T / 9T 10T / 10T

Nominal Amps (1) (A) 15.0 / 8.5 15.1 / 11.4 14.7 / 14.7 15.3 / 15.3

Locked rotor Amps (2) (A) 118 / 65.5 118 / 101 118 / 118 118 / 118

Outdoor Fan

Nominal Airflow (m3/h) 15350 19750 21000 23500

Type Axial Axial Axial Axial

Diameter (mm) 660 660 710 710

Drive type Direct Direct Direct Direct

Number / Voltage 2 2 2 2

Motor HP (kW) 0.25 0.25 0.56 0.56

Motor Rated Amps (1) (A) 1.6 1.6 2.3 2.3

Motor Locked rotor Amps (2) (A) 3.8 3.8 5.8 5.8

Motor RPM (rpm) 925 925 925 925

Installation

29RT-SVX19A-E4

Table 24 - Electrical data - WKD/WKH Compressor motor and condenser motor

(1) At Eurovent rating conditions : Indoor return Air (27°C DB / 19°C WB) - Ambiant 35°C

(2) per motor

Table 25 - Electrical data - TKD/TKH Supply fan motor

(4) At the nominal airflow with standard drive

(5) At the nominal airflow with oversized drive when available

YKD/H YKD/H YKD/H YKD/H

155 175 200 250

Indoor Fan

Nominal Airflow (m3/h) 8500 9850 11210 14100

Static pressure available (4) (Pa) 150 75 175 75

Maximum static pressure available (5) (Pa) 350 375 450 375

Type FC Centrifugal FC Centrifugal FC Centrifugal FC Centrifugal

Diameter / Width (in / in) 15" / 15" 15" / 15" 18" / 18" 18" / 18"

Drive type Belt Belt Belt Belt

Number # 1 1 1 1

Motor HP (Standard/Oversized) (kW) 2.2 / 3.0 3.0 / 4.6 3.0 / 4.6 4.6 / -

Motor Rated Amps (Standard/Oversized) (A) 4.6 / 6.5 6.5 / 9.0 6.5 / 9.0 9 / -

Motor Locked rotor Amps (Standard/Oversized) (A) 36.4 / 57 57 / 71.9 57 / 71.9 71.9 / -

Motor RPM (Standard/Oversized) (rpm) 1450 / 2870 2870 / 2900 2870 / 2900 2900 / -

WKD/H WKD/H WKD/H

125 155 200

Compressor

Number 2 2 2

Type Scroll Scroll Scroll

Model 6T / 6T 7.5T /7.5T 10T / 10T

Rated Amps (1) (A) 10.0 / 10.0 12.1 / 12.1 17.5 / 17.5

Locked rotor Amps (2) (A) 74 / 74 79 / 79 98 / 98

Outdoor Fan

Nominal Airflow (m3/h) 15300 15850 23600

Type Axial Axial Axial

Diameter (mm) 660 660 710

Drive type Direct Direct Direct

Number 2 2 2

Motor HP (kW) 0.25 0.25 0.56

Motor Rated Amps (1) (A) 1.6 1. 6 2.3

Motor Locked rotor Amps (2) (A) 3.8 3.8 5.8

Motor RPM (rpm) 925 925 950

Installation

RT-SVX19A-E430

Table 26 - Electrical data - YKD/YKH Supply fan motor

(4) At the nominal airflow with standard drive

(5) At the nominal airflow with oversized drive when available

Table 27 - Electrical data - WKD/WKH Supply fan motor

(4) At the nominal airflow with standard drive

(5) At the nominal airflow with oversized drive when available

Table 28 - Electrical data - Combustion Blower Motorr

YKD/H YKD/H YKD/H YKD/H

155 175 200 250

Gas burner

Heating Models G350 G350 G350 G350

Heating Input (G20) (kW) 77 77 77 77

Heating Output (kW) 69.3 69.3 69.3 69.3

Steady State Efficiency (%) 90 90 90 90

No. Burners 1 1 1 1

No. Stages 2 2 2 2

Gas Connection Pipe Size 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT

WKD/H WKD/H WKD/H

125 155 200

Indoor Fan

Nominal Airflow (m3/h) 7140 8500 11210

Static pressure available (4) (Pa) 200 175 200

Maximum static pressure available (5) (Pa) 425 325 350

Type FC Centrifugal FC Centrifugal FC Centrifugal

Diameter / Width (in / in) 15" / 15" 15" / 15" 18" / 18"

Drive type Belt Belt Belt

Number # 1 1 1

Motor HP (Standard/Oversized) (kW) 2.2 / 3.0 2.2 / 3.0 3.0 / 4.6

Motor Rated Amps (Standard/Oversized) (A) 4.6 / 6.5 4.6 / 6.5 6.5 / 9.0

Motor Locked rotor Amps (Standard/Oversized) (A) 36.4 / 57 36.4 / 57 57 / 71.9

Motor RPM (Standard/Oversized) (rpm) 1450 / 2870 1450 / 2870 2870 / 2900

TKD/H TKD/H TKD/H TKD/H

155 175 200 250

Indoor Fan

Nominal Airflow (m3/h) 8500 9850 11210 14100

Static pressure available (4) (Pa) 175 250 200 125

Maximum static pressure available (5) (Pa) 325 400 375 350

Type FC Centrifugal FC Centrifugal FC Centrifugal FC Centrifugal

Diameter / Width (in / in) 15" / 15" 15" / 15" 18" / 18" 18" / 18"

Drive type Belt Belt Belt Belt

Number # 1 1 1 1

Motor HP (Standard/Oversized) (kW) 2.2 / 3.0 3.0 / 4.6 3.0 / 4.6 4.6 / -

Motor Rated Amps (Standard/Oversized) (A) 4.6 / 6.5 6.5 / 9.0 6.5 / 9.0 9 / -

Motor Locked rotor Amps (Standard/Oversized) (A) 36.4 / 57 57 / 71.9 57 / 71.9 71.9 / -

Motor RPM (Standard/Oversized) (rpm) 1450 / 2870 2870 / 2900 2870 / 2900 2900 / -

Controls

31RT-SVX19A-E4

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 11 - Thermostat wiring

1

1

22

1

3

4

10

9

8

7

6

5

1

1

10

9

8

7

6

5

4

3

2

SR6

THS03

2

1

3

4

10

9

8

7

6

5

11

12

14

1

10

9

8

7

6

5

4

3

2

11

12

14

RTRM

3J6

11

12

14

THA01

10

9

8

7

11

12

14

10

9

8

7

11

12

14

10

9

8

7

11

12

14

10

9

8

7

11

12

14

SR6

THP03

S2

S1

RTRM

3J6

1

2

(WH)

(GN)

(RD)

(BK)

RTRM

3J7

0

W1

G

Y1

Y2

R

0

W1

G

Y1

Y2

R

COM

24V

24V(C)

RTRM

3J7

W1

W2

G

Y1

Y2

R

COM

W1

W2

G

Y1

Y2

R

24V

24V(C)

THS02

4239070

THP02

4240530

THS01

4239060

THP01

4240520

Trane THS01,THS02, THP01 and

THP02 Thermostats are directly

connected to RTRM board

(J7 connector). TRANE THS02 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 29. 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 29 - Zone sensor wire size and

maximum length

Maximum length

Zone sensor wire size

Wire

size

(mm²)

Maximum

wire lengh

(m)

THS/THP 03 0.33 45

0.5 76

0.75 115

1.3 185

2300

Conventionnal

thermostat

THS/THP 01-02

0.33 10

0.5 15

0.75 23

1.3 37

260

Controls

RT-SVX19A-E432

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.

Controls

33RT-SVX19A-E4

CO2sensors

Wall-mounted and duct-mounted

CO2sensors

Table 30 - Specifications

WaII-mounted Duct-mounted

Measuring range CO20-200 ppm

Accuracy at 25°C

<+/- [40 ppm CO2+

3%

of reading]

(included repeatability

and calibration

uncertainty)

<+/- [30 ppm CO2

+ 2%

of reading]

(included

repeatability and

caiibration

uncertainty)

Non-linearity <1.0% full scale

Ternperature dependence

of output 0.3% full scale/°C

Long-term stability <5.0% fulI scale /

5years

Recomrnended

calibration interval 5 years

Response time 1 minute (0-63%)

Operating temperature 15-35°C - 5-45°C

Storage temperature -20-70°C

Humidity range 0-85% relative

humidity

Airflow range 0-10 m/s)

Output signals (jumper

selectable) 0-10Vdc

Resolution of anaIog

outputs 10 ppm CO2

Recomrnended external

load Current output:

max 500

Voltage output:

min. 1000

Power supply Nominal 24Vac

Power consumption <5 VA

Warm-up time <15 minutes

Dimensions (mm) 108 x 80 x 36 80 x 80 x 200

Controls

RT-SVX19A-E434

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.

The CO2sensor is designed to

operate with a nominal 24 Vac

supply. The power supply should

maintain the voltage between 20 to

26 Vac.

Table 31 - CO2 sensor wire size

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.

To connect the wall mounted CO2

sensor, Refer to the wiring diagram

provided in the unit.

Cross

section

Maximum wire

Iength

(mm2) (mn)

0.25 50

0.5 100

1200

Wiring the duct-mounted CO2

sensor

1. Connect the DCV signal lwire to

the connector DCV of the ECA

2. Connect the power according to

the guidelines in Power supply

requirements.

To connect the wall mounted CO2

sensor, Refer to the wiring diagram

provided in the unit.

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.

For surface wiring, make cut-

outs 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.

Figure 12 - Jumper settings

OUTPUT

SELECTION

JUMPERS

Controls

35RT-SVX19A-E4

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 13).

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 13 - Duct-mounted CO2sensor

Figure 14 - Duct-mounted CO2insertion depth

21/2 in. (64 mm) 31/8 -5

1/2 in. (80 - 140 mm)

15/8 in. ( 42 mm)

7/8 in. (2 2 mm)

15/8 in.

(42 mm)

CO2 sensor maintenance

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.

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.

Controls

RT-SVX19A-E436

Remote potentiometer

To install the remote potentiometer,

cut the jumper WL on the

economizer ECA board, and connect

the wires to P and P1.

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 15 - Remote potentiometer dimensions

Figure 16 - Remote potentiometer wiring

1 = Remote potentiometer

2 = ECA Board

WH = White wire

RD = Red Wire

BU = Blue wire

_____ Factory wiring

-------- Field wiring

P

P

Controls

37RT-SVX19A-E4

Fire thermostat

There are two sensors in the fire

thermostat Kit: Sensor X13100040-

01 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.

Connection of the fire thermostat

with TCI board : Refer to the wiring

diagram provided in the unit.

Connection without TCI board

Connect according to the standard

wiring diagram provided on the

unit.

Remove sensor cover and fasten

control securely with screws. Loads

connected must not exceed 2 amps,

30V Ac.

Figure 17 - Duct mounting of fire thermostat

1 = Fire thermostat

2 = Hole in the duct

Controls

RT-SVX19A-E438

Clogged filter detector

This device is mounted in the filter

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.

Smoke detector

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.

Remote fault relay

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.

Thermostats

6 thermostats are available:

THS01/THP01, THS02/THP02 and

THS03/THP03.

"THS" are non programmable

thermostats, "THP" are

programmable.

01 and 02 series are conventional

thermostat, 03 series are dedicated

to the controller.

Table 32 - Thermostats features

*some important features are lost while using the CTI card.

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

THS01 THP01 THS02 THP02 THS03 THP03

non-programmable X -X -X -

programmable -X -X -X

electronic X X X X X X

unit control type design electromech. electromech. electromech. electromech. Reliatel Reliatel

interface card needed CTI* CTI* CTI* CTI* none none

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

heating stages

(heat pump mode) none none 1 1 1 1

liquid crystal display X X X X -X

Controls

39RT-SVX19A-E4

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.

Communication Interfaces

TRANE Communication Interface

(TCI-R) board

This is an electronic board, factory-

mounted in the main control panel,

needed to allow communication

between a TRANE Integrated

Comfort system (TRACKER or

Varitrac CCP2) and the unit. (COM3-

COM4)

LON Communication Interface

(LCI-R) board

This is an electronic board, factory-

mounted in the main control panel,

needed to allow communication on

a LonTalk®Network at the unit level.

LonTalk®. Communication Interface

(LCI-R) board

This interface 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 LCI-

V 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.

Unit Options

RT-SVX19A-E440

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.

Hot water coil: 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 33 - Ethylene glycol percentage

Ethylene glycol

percentage Freezing point

(%) (°C)

10 -4

20 -10

Figure 18 - Hot water coil connections

Unit Options

41RT-SVX19A-E4

Electric Heater

Electric heaters are fitted on the fan

discharge.

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.

Soft Starter

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.

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 64 seconds but the soft

starter is factory set to the

maximum starting time value,

64 seconds.

Figure 19 - Soft starter

1 = Three phase mains connections

2 = Motor connections

3 = Settings

4 = Status outputs

5 = Controls

6 = LEDs

1

2

3

4

5

6

INITAL

TORQUE

Time(s)

Motor

Softstarter

Stop / Load

Start / Line

Supply

Urg.

Stop

Ctrl

Byp.

Diag.

Unit Options

RT-SVX19A-E442

0 - 25% fresh air hood

The 0-25% fresh air hood allows to

introduce fresh air into the unit.

This is a manual device fitted on the

back of the unit, sized for a

maximum of 25% of the nominal

rooftop air flow.

This option includes for the hood

itself, a wire mesh and a slidable

damper.

The slidable damper has to be

adjusted manually by removing the

screws and sliding it off up or down

(Figure 20).

The amount of fresh air introduced

is then permanently fixed.

Figure 20 - 0-25% manual fresh air hood

1 = Intake hood

2 = Wire mesh

3 = Slidable damper

210

585

H

485

1

2

3

This option includes exhaust hoods

and gravity dampers located in the

return air section (Figure 22). When

the pressure of the building

increase, the gravity dampers open

and relieve air to the outside.

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 releive air outside of

the building.

Unit Options

43RT-SVX19A-E4

Barometric relief

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.

Figure 21 - Economizer flow chart with barometric relief

Downflow version Horizontal flow version

R = return

S = supply

F = fresh air

E = exhaust

S

R

F

E

S

F

R

Operation

RT-SVX19A-E444

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.

The terminal strip for attaching the

thermostat wires is located on the

RTRM module in the control

compartment.

The purpose of each terminal is

discussed in the next section.

COM

T

R

Y1

W1/0

G

W2

X2

Y2

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.

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.

Operation

45RT-SVX19A-E4

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

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)

Conventional thermostat –

Heat Pump

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.

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 stage cooling) Compressor #1 runs

or economizer

operates

Y1 + Y2 + O

(2nd stage cool) Compressor #2 also

runs, or #1

compressor runs

while economizing.

Heating mode:

G(fan) Fan runs continuously

except during

unoccupied mode

(see below)

Y1 (both

compressors 1st

stage heat)

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

Operation

RT-SVX19A-E446

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

follows.

Table 34 - Cooling/Economizer Operation with Thermostat1,2

OK to

Economize?

Thermostat

Y1

Thermostat

Y2

Call for Economizer

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

Operation

47RT-SVX19A-E4

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 access panel located

on the economizer section.

• 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 anti-

clockwise to decrease ventilation.

The damper will open at this

setting whenever the fan circuit

is powered up.

• When the arrow on the dial

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%

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 35.

Table 35 - ECA board LED

While setting the minimum position

the damper may move toward 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.

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: C02Sensor

3 Flashes: RA Humidity Sensor

4 Flashes RATemp Sensor

5 Flashes: OA Quality Sensor

6 Flashes: OA Humidity Sensor

7 Flashes: OATernp Sensor

8 Flashes: MATemp Sensor

9 Flashes: RAM Fault

10 Flashes: ROM Fault

11 Flashes: EEPROM Fault

Operation

RT-SVX19A-E448

Figure 22 - Minimum fresh air adjustment

1 = ECA board

1234

1

2

1

2

1

2

1

2

1

2

1

2

1

2

EXF

EXF

MAT

OAH

AH

/

OAE

OAT

RAT

RAH

AH

/

RAE

DCV

DCV

2-10 VDC

2-10 VDC

FEED

FEED

BACK

INPUT

INPUT

+

-

+

-

2-10 VDC

2-10 VDC

CONT

ONT

ROL

OUTPUT

OUTPUT

MIN POS.

MIN POS.

SETPOINT

SETPOINT

0-50%

0-50%

ABCD

ABCD

SE

SE

TTING

TING

S

CO2 "PU

O2 "PU

RGE

GE

"

SETPOINT

SETPOINT

ADJUS

ADJUS

TMEN

MEN

T

500-1500 PPM

500-1500 PPM

GREEN

GREEN

LED

LED

POWER EXH

WER EXH

AUS

US

T

CON

ON

TACTS

MIXED AIR SENSOR INPUT

MIXED AIR SENSOR INPUT

COMMO

OMMO

N

COMMO

OMMO

N

OHS INPUT

OHS INPUT

NOT USED-

T USED-

OAT I

T I

S

CONNECTED

ONNECTED

TO

O

RTR

TR

M

RA INPU

A INPU

T

COMMO

OMMO

N

COMMO

OMMO

N

RHS INPUT

RHS INPUT

CO2 SENSOR INPU

O2 SENSOR INPU

T

COMMO

OMMO

N

P

P1

P1

REM

REM

OTE

MINIMUM

MINIMUM

POTENTIOMETE

TENTIOMETE

R

SHO

SHO

RTED=C

TED=C

LOSE

OSE

D

OPEN=ON B

OPEN=ON B

OARD P

ARD P

OT.

270 omega = 50%

270 omega = 50%

WHT

WHT

RED

RED

BLUE

MOD

MOD

BUS

-

+

COMMO

OMMO

N

24

24

VAC

+

1

POWER EXHAUST

CONTACTS

MIXED AIR SENSOR

INPUT COMMON

COMMON

OHS INPUT

NOT USED-OAT IS

CONNECTED TO

RA INPUT

COMMON

COMMON

RHS INPUT

CO2SENSOR INPUT

COMMON

SHORTED=CLOSED

OPEN=ON CARD POT.

270 omega = 50%

REMOTE

MINIMUM

POTENTIOMETER

CO2 “PURGE”

SETPOINT

ADJUSTMENT

500-1500 PPM

GREEN

LED

COMMON

24VAC

MODBUS

2-10 VDC

CONTROL

OUTPUT

2-10 VDC

FEEDBACK

INPUT

MIN POS.

SETPOINT

0-50%

ABCD

SETTINGS

WHT

RED

BLUE

Operation

49RT-SVX19A-E4

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

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.

Power-up initialization

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.

Test mode procedure at the

ReliaTel™ control board

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.

CAUTION! Use one of the following

"Test" procedures to bypass some

time delays and to start the unit at

the control panel.

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.

Operation

RT-SVX19A-E450

Test modes

There are 2 methods in which the

"Test" mode can be cycled with the

test button:

1. Step Test Mode

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 start-

up of the unit, this method allows

the technician to cycle a component

"On" and have up to 1 hour to

complete the check.

2. Auto Test Mode

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.

For unit test steps and test modes,

values to cycle the various

components, refer to Table 36.

Table 36 - Service Test Guide for Component Operation on gas-fired units

* 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.

Step Mode Indoor

Fan Economizer Compressor

1

Compressor

2Heat 1 Heat 2 Outdoor 1 Outdoor 2

1Fan On On Min Off Off Off Off Off Off

2* Econ. On Open Off Off Off Off Off Off

3CooI1 On Min On Off Off Off On **

4CooI2 On Min On On Off Off On **

5Heat1 On Min Off Off On Off Off Off

6Heat2 On Min Off Off On On Off Off

Operation

51RT-SVX19A-E4

Unit start-up

Verification of gas valve settings -

(Reserved for the qualified gas

technician)

WARNING! Improper gas valve

setting may lead to burner

destruction and people injury.

Note: Unit factory-set for G20.

Figure 23 - Gas valve

1 = Negative pressure controller

2 = Safety solenoid valve

3 = Gas injector

4 = Air inlets

5 = To the burner

6 = Fan

7 = Gas unit

8 = Minimum gas pressure cut-out

Note: Unit to be installed outside

only.

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

Operation

RT-SVX19A-E452

Table 37 - Marking category of the gas section in different countries

Table 38 - Gas burner data

Country FR CH+ES-GB-IE-PT IT NL BE LU-DE AT-DK-Fl-SE

Category II2E+3P II2H3P II2H3+ II2L3P I2E+ & I3P I2E & I3P I2H

Type of gas Pressure in mbar

G20 20 20 20 -20 20 20

G25 25 - - 25 25 20 -

G31 37 37 37 30 37 50 -

Burner G350

Natural Gas G20 (20mbar) 34.02 MJ/m3(15°C-1013)

Gas Flow (15 C-1013 mbar) (m3/h) Nominal rate 8.1

Reduced rate 8.13

Heating Capacity (kW) Nominal rate 69.3

Reduced rate 69.1

Heating Rate (kW) Nominal rate 77

Reduced rate 76.8

Efficiency %Nominal rate 90

Reduced rate 90

Smoke analysis G20 - 20mbar

@ 400V-3-50Hz

CO % < 0.001%

Nox ppm 9 ppm

CO2%9.7%

G350

YK* 155-175-200-225 1

Burner G350

Natural Gas G25 (20 ou 25 mbar) 29.30 MJ/m3(15°C-1013)

Gas Flow (15 C-1013 mbar) (m3/h) Nominal rate 8.8

Reduced rate 8.21

Heating Capacity (kW) Nominal rate 62.9

Reduced rate 59.5

Heating Rate (kW) Nominal rate 71.5

Reduced rate 66.8

Efficiency %Nominal rate 88

Reduced rate 89

Smoke analysis G25 - 25mbar

@ 400V-3-50Hz

CO % < 0.001%

Nox ppm -

CO2%7. 4 %

Burner G350

Propane Gas G31 (30, 37ou 50 mbar) 88.00 MJ/m3(15 C-1013)

Gas Flow (15 C-1013 mbar) (m3/h) Nominal rate 2.7

Reduced rate 2.56

Gas Flow (15 C-1013 mbar) (kg/h) Nominal rate 5.1

Reduced rate 4.9

Heating Capacity (kW) Nominal rate 57.5

Reduced rate 55.3

Heating Rate (kW) Nominal rate 65.3

Reduced rate 62.6

Efficiency %Nominal rate 88

Reduced rate 88.3

Combustion Air Flow

(Avec E=25%) (m3/h) Nominal rate 98

Reduced rate 93

Smoke analysis G31 - 37mbar

@ 400V-3-50Hz

CO % < 0.001%

Nox ppm -

CO2%8.9%

Operation

53RT-SVX19A-E4

Starting the unit in cooling mode

Before start-up, ensure that all

power cables are tightened.

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.

Operating pressures

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.

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.

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).

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?

Operation

RT-SVX19A-E454

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.

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.

Operation

55RT-SVX19A-E4

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.

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.

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.

Operation

RT-SVX19A-E456

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 de-

energized 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.

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 39 - Potentiometer Setting

*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).

Potentiometer

Setting

Dry BuIb Enthalpy

(°C) (KJ/kg)

A 23* 63

B21 58

C19 53

D17 51

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.

Operation

57RT-SVX19A-E4

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.

Table 40 -LED status

Diagnostics Green LED Red LED

1. Powered but no heat dernand Off Off

2. Heat demand without fault Flash ing Off

3. No flame detection on ignition - or signal detected

and then lost Off Flashing

4. Gas unit incorrectly wired or flame signal detected on

a heat demand Steady Flashing

5. Internal fault Off Steady

Maintenance

RT-SVX19A-E458

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.

End user routine

maintenance

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 41 - Refrigerant charge

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

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 23.7/2.1

YSD/YSH 120 23.5/3.0

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.

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.

Maintenance

59RT-SVX19A-E4

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.

Maintenance

RT-SVX19A-E460

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.

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.

Maintenance

61RT-SVX19A-E4

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

Zone Temperature Sensor (ZTS)

Service Indicator

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.

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.

Maintenance

RT-SVX19A-E462

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

Cooling Failures and Ignition

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.

Maintenance

63RT-SVX19A-E4

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.

Table 42 - 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

426.22

722.85

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. 3 3

35 6.528

38 5.824

Literature order number RT-SVX19A-E4

Date 0805

Supersedes RT-SVX04A and RT-SVX05A

Literature stocking location Europe

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.

A business of American Standard

Companies www.trane.com

For more information, contact your local Trane

sales office or e-mail us at comfort@trane.com American Standard Europe BVBA

Registered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium