Trane TR-SCS Installation And Maintenance Manual

Page 1

Installation, Operation, and Maintenance

Remote Air-Cooled Condensers

Outdoor Cooling Systems

SAFETY WARNING

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

December 2020

SS-SVX006C-EN

Page 2

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

WARNING

CAUTIONs

NOTICE

Important Environmental Concerns

Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs.

Important Responsible Refrigerant Practices

Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified according to local rules. For the USA, the Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

Indicates a situation that could result in equipment or property-damage only accidents.

WARNING

Proper Field Wiring and Grounding Required!

Failure to follow code could result in death or serious injury. All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes.

WARNING

Personal Protective Equipment (PPE) Required!

Failure to wear proper PPE for the job being undertaken could result in death or serious injury. Technicians, in order to protect themselves from potential electrical, mechanical, and chemical hazards, MUST follow precautions in this manual and on the tags, stickers, and labels, as well as the instructions below:

• Before installing/servicing this unit, technicians MUST put on all PPE required for the work being undertaken (Examples; cut resistant gloves/sleeves, butyl gloves, safety glasses, hard hat/bump cap, fall protection, electrical PPE and arc flash clothing). ALWAYS refer to appropriate Safety Data Sheets (SDS) and OSHA guidelines for proper PPE.

• When working with or around hazardous chemicals, ALWAYS (Global Harmonized System of Classification and Labeling of Chemicals) guidelines for information on allowable personal exposure levels, proper respiratory protection and handling instructions.

• If there is a risk of energized electrical contact, arc, flash, technicians MUST put on all PPE in accordance with OSHA, NFPA 70E, or other country-specific requirements for arc flash protection, PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING, DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC FLASH CLOTHING. ENSURE ELECTRICAL METERS AND EQUIPMENT ARE PROPERLY RATED FOR INTENDED VOLTAGE.

refer to the appropriate SDS and OSHA/GHS

Page 3

WARNING

Follow EHS Policies!

Failure to follow instructions below could result in death or serious injury.

• All Trane personnel must follow the company’s Environm when performing work such as hot work, electrical, fall protection, lockout/tagout, refrigerant handling, etc. Where local regulations are more stringent than these policies, those regulations supersede these policies.

• Non-Trane personnel should always follow local regu

ental, Health and Safety (EHS) policies

lations.

This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

Introduction

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners.

Revision History

Updated Model Number Descriptions chapter.

SS-SVX006C-EN 3

Page 4

Table of Contents

Model Number Descriptions . . . . . . . . . . . . . . 5

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Product Description . . . . . . . . . . . . . . . . . . . . 6

Capabilities and Features . . . . . . . . . . . . . 6

Safety Features . . . . . . . . . . . . . . . . . . . . . . 6

Application Ranges . . . . . . . . . . . . . . . . . . 6

General Design . . . . . . . . . . . . . . . . . . . . . . . . 7

Condenser Coil . . . . . . . . . . . . . . . . . . . . . . 7

TR-SCS Condenser Coils . . . . . . . . . . . . . . 7

TR-SCS-MC Micro-Channel Condenser Coils 7

Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . 7

Electric Box . . . . . . . . . . . . . . . . . . . . . . . . . 7

Receiver (Optional) . . . . . . . . . . . . . . . . . . . 7

Head Pressure Controls . . . . . . . . . . . . . . . . 8

Condenser Fan Cycling (AA Models) . . . . 8

Variable Condenser Fan Speed (SA Models) 8

Flooded Head Pressure Control . . . . . . . . 8

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Receiving the Equipment . . . . . . . . . . . . . . 10

Site Preparation . . . . . . . . . . . . . . . . . . . . . . 10

Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Mounting and Placement . . . . . . . . . . . . . . 11

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Refrigerant Piping . . . . . . . . . . . . . . . . . . . . 12

Refrigerant Line Sizing . . . . . . . . . . . . . . . 13

Head Pressure Control Valve Installation (TR-

SCS condenser only) . . . . . . . . . . . . . . . . 15

Receiver Pipe Installation (TR-SCS condenser

only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Utility Connections . . . . . . . . . . . . . . . . . . . 15

Main Power and Control Wiring . . . . . . . 15

System Charging . . . . . . . . . . . . . . . . . . . . . 17

R407C/R410A Refrigerant . . . . . . . . . . . . 17

Estimating Refrigerant Charge . . . . . . . . 17

Preparing System for Charging . . . . . . . 18

Refrigerant Charging Procedures . . . . . . 19

Refrigerant Characteristics . . . . . . . . . . . . . .21

Pressure/Temperature Settings . . . . . . . .21

Saturated Refrigerant Pressure . . . . . . . . . 21

Startup and Commissioning . . . . . . . . . . . . . .24

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Operational Description . . . . . . . . . . . . . . .24

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Periodic General Maintenance . . . . . . . . . .25

General . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Field Service . . . . . . . . . . . . . . . . . . . . . . . . . .25

Leak Detection . . . . . . . . . . . . . . . . . . . . . .25

Leak Repair . . . . . . . . . . . . . . . . . . . . . . . . .25

Refrigerant Piping . . . . . . . . . . . . . . . . . . .25

Electrical System . . . . . . . . . . . . . . . . . . . .25

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . .26

Recommended Maintenance . . . . . . . . . . . .27

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Semi-Annually . . . . . . . . . . . . . . . . . . . . . .27

Annually . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Product Support . . . . . . . . . . . . . . . . . . . . . . . . .28

Factory Authorized Start Up/Warranty Inspection

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Technical Support . . . . . . . . . . . . . . . . . . . . .28

Obtaining Warranty Parts . . . . . . . . . . . . . . .28

Obtaining Spare/Replacement Parts . . . . . .28

Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Installation Checklist . . . . . . . . . . . . . . . . . . . 29

4 SS-SVX006C-EN

Page 5

Model Number Descriptions

TR-SCS Series Condensers

Digit 1,2,3,4,5— Unit Configuration

TR-SCS = Series Condenser

Digit 8,9,10,11- Capacity (MBH)

012 018 024 036 060 096 120 144 192 252 276 312 447 525 597 683 940 1366

Digit 12 - Circuits

S=Single D= Dual

Digit 13,14 - Fan Options

AA = Fan Cycle Control SA = Variable Speed Control EC = Variable Speed Control

(Electronically Commutated Fans)

About Digits

Model numbers are comprised of digits. Each digit, or set of digits, defines the product model.

Example using model  TR-SCS-096-S-SA:

• Series Condenser (SCS, digits 1,2,3,4,5)

• 96,000 MBH Capacity  (digits 8,9,10,11)

• Single Circuits (digit 12)

• Variable Speed Control  (digit 13,14)

TR-SCS Series Micro-Channel Condenser

Digit 1,2,3,4,5,6,7 — Unit Configuration

TR-SCS-MC = Condenser Section with

Micro-Channel Coil

Digit 8,9,10 - Capacity (MBH)

015 018 031 035 056 071 111 128 142 223 264 334

Digit 11 - Circuits

S=Single D= Dual

Digit 12,13 - Fan Options

EC = Variable Speed Control

(Electronically Commutated Fans)

LN = Low Noise Variable Speed

Control

(Electron

ically Commutated Fans)

Digit 14 - Receiver Options

O= Standard F = Flooded Head Pressure Control

with Receiver

Digit 15 - Refrigerant

1 = R407C 2 = R410A

Example using model  TR-SCS-MC-056-D-LN-F-1:

• Condenser Section with MicroChannel Coil  (SCS-MC, digits 1,2,3,4,5,6,7)

• 56,000 MBH Capacity  (digits 8,9,10)

• Dual Circuits (digit 11)

• Low Noise Variable Speed Control

igit 12,13)

• Flooded Head Pressure Control with Receiv

er (digit 14)

• R407C Refrigerant (Unit 15)

SS-SVX006C-EN 5

Page 6

Introduction

General

The Remote Air-Cooled Condenser is designed and manufactured by STULZ. Recognized as a world leader, Trane provides precision cooling systems with the highest quality craftsmanship using the finest materials available in the industry. The unit will provide years of trouble-free service if installed and maintained in accordance with this manual. Damage to the unit from improper installation, operation or maintenance is not covered by the warranty.

This manual contains information for installation,

eration, maintenance, troubleshooting and repair.

op Study the instructions contained in this manual. They must be followed to avoid difficulties. Spare parts are available from Trane to insure continuous operation. Using substitute parts or bypassing electrical or refrigeration components to continue operation is not recommended and will void the warranty. Due to technological advancements, components are subject to change without notice.

Trane Air-cooled Condensers are designed to reject heat

m re

fro beyond this is deemed to be not intended. Trane is not liable for any damage resulting from improper use. The unit is designed to be installed outdoors unless otherwise noted on the equipment nameplate.

frigerant based cooling equipment. Any use

Product Description

Trane Remote Air-Cooled Condensers are designed to be the most efficient and reliable condensers in the industry. The unit is an air-cooled, heat rejection condenser with a vertical air discharge pattern.

The unit is self-contained in a light weight, corrosion resistant aluminum cabinet ho

rizontal surface. The cabinet houses the condenser coil(s) and fan assembly(s). The electrical controls are in an integrally mounted, weatherproof enclosure which is isolated from the rest of the equipment.

There are many cabinet sizes based on the capacity of the

nit. Refer to the installation drawing supplied with your

u unit for the layout and dimensions of your cabinet.

TR-SCS condensers are highly efficient heat systems. Enhanced performance TR-SCS-MC are also available. TR-SCS-MC condensers are equipped with micro-channel coils which offer greater refrigerantto-air heat transfer. The total heat rejection in BTU/hr will depend on the unit size. Refer to the unit nameplate to identify the model number of your unit. The system will consist of a single refrigeration circuit or dual circuit coil. The coil is a closed-loop refrigerant condensing heat exchanger in which refrigerant is continuously circulated by the pressure differential created by a compressor.

The compressor increases refrige sufficiently high for it to be cooled and condensed into

designed for mounting to a

rejection

condensers

pressure to a level

rant

liquid by the effect of ambient air being drawn over the condenser coil. Trane condensers are designed to operate with either R407C or R410A refrigerant. Refer to the unit nameplate to identify the type of refrigerant to be used in your unit.

Outdoor air-cooled condensers use am

bient head pressure control down to 0°F (TR-OHS only). Variable fan speed control is used for operation in low ambient temperatures down to -20°F. Flooded head pressure control is used with fan cycling for low ambient temperatures down to -30°F.

Operation of the condenser is independent, controlled by

e refrigerant pressure. It can be wired in the field for the

th system controller (provided with the indoor evaporator section) to enable condenser operation.

fan cycling for low

Capabilities and Features

• All aluminum cabinet construction.

• Mounting legs.

• Direct driven axial fan(s) equipped with external rotor

tors.

• Unit mounted, weather resistant control enclosure

with lockable service dis

connect switch.

Safety Features

The remote air-cooled condenser is provided with a factory mounted service disconnect switch. The service disconnect switch electrically isolates the unit during routine maintenance. The handle of the switch may be locked in the “Off” position to prevent unauthorized operation. Finger guard grilles are provided on each fan to protect the operator from injury and to keep large tools or other objects from falling into the fan.

Application Ranges

Trane remote air-cooled condensers are designed for operation within the following ranges.

Outdoor Temperature Range

Fix ed Fan Cy cli ng Con tr o l ( TR-OH S o nl y ) 0º F or hi ghe r

Var iable Fan Sp eed Con t r ol - 20º F or hig he r

Floo de d H ead Pressu r e Co ntrol - 30º F or hig he r

Operating Voltage

VAC I npu t pe r u n it n am ep la t e + / - 10% .

Max . Pipin g Len gt h; I ndoo r

Evaporat or t o Con denser

Max . Leve l Drop; I ndoor Eva po r at or

to Con den ser

St or age Cond itions -30 º F to 105 º F

15 0 ft equi v alen t le ng t h

20 ft ( if con d en ser i s belo w

the ev ap or ator)

6 SS-SVX006C-EN

Page 7

Introduction

Elect ric Box

Ser v ice Sw it ch

Fan wit h Fing er Gu ar d

Adj ust ab le Mou n t ing Sup p or t Leg ( Must be fu lly ex t end ed)

Fan wit h Fin ge r Gua rd

Lif t in g Eye

Elect ric Box

Ser v ice Di sco nne ct Swit ch

Receive r ( Opt ional)

Note: Damage or malfunction to the unit due to storage

or operation outside of these ranges will VOID THE WARRANTY.

General Design

Trane TR-SCS series remote air-cooled condensers are housed in an aluminum frame cabinet and are rated for outdoor use. The figures that follow depict the two types of condensers and identifies the major components.

Figure 1 depicts a layout of a typical TR-SCS Figure 2 depicts a layout of a typical TR-SCS-MC

condenser.

Condenser Coil

The capacity of the condenser, indicated by the unit model number, is based on the rated capacity of the coil. In the case of dual circuit units, the model number is based on the combined capacity of both coils.

TR-SCS Condenser Coils

TR-SCS condenser coils are copper tube, aluminum finned coils.

TR-SCS-MC Micro-Channel Condenser Coils

TR-SCS-MC condenser coils are brazed all-aluminum construction with high performance fins which provide improved airflow and higher heat transfer.

Figure 1. Typical layout - TR-SCS condenser

condenser.

Figure 2. Typical layout - TR-SCS-MC condenser

Fan Assembly

The condenser is equipped with high efficiency axial type, impeller fan(s) rated for outdoor applications. The quantity of fans vary depending upon the capacity of the unit. The fan(s) use corrosion resistant, multi-blade impellers designed for high aerodynamic efficiency which results in lower power consumption, lower noise levels and longer life. Each fan uses a direct driven motor with maintenance free bearings. The fan motors are internally protected from overload.

Electric Box

The electrical components are protected in a weather resistant enclosure located at the header end of the unit. The electric box has a removable front access panel which is safety interlocked with the service disconnect switch, preventing the panel from being removed when the switch is in the “On” position. The switch must be turned “Off” to gain access to the electrical components.

Receiver (Optional)

Receivers are furnished for air-cooled condensers using flooded head pressure control for low ambient

SS-SVX006C-EN 7

temperature conditions. The optional receivers are equipped with pressure relief valves and heater pads. Receivers for TR-SCS condensers are mounted to a coated steel base frame which may be attached to a suitable foundation next to the condenser (see

ead pres

sure control valve may be shipped loose for field

Figure 8, p. 12). A

installation to the receiver if one is not already provided in the indoor A/C unit.

The TR-SCS-MC condenser design are integrally mounted to the

differs in that receivers

condenser frame (see

Figure 2). For -30°F applications a head pressure control

valve is factory installed and piped to the receiver.

Page 8

Introduction

Head Pressure Controls

Condenser Fan Cycling (AA Models)

Used for outdoor installations where ambient condenser air inlet temperatures are 0 °F or higher, a condenser fan cycling switch monitors refrigerant discharge pressure and turns on the condenser fan as required to maintain allowable condenser pressures. This is a high-pressure differential control switch with Single Pole Single Throw (SPST) contacts and an automatic reset. The switch activates the condenser fan contactor to maintain condensing temperature when the discharge pressure rises. See settings.

Note: It may be

On single circuit condensers, each own fan cycling switch. Multiple fans are staged to operate sequentially as discharge pressure rises. The primary fan (closest to the header) turns on 1st as described above. If pressure continues to rise, adjacent fan(s) are set to turn on in sequential increments with the fan located furthest from the header turning on last. Conversely, as discharge pressure drops, the fans drop out sequentially in reverse order.

Dual Circuit condensers emplo control switch for each refrigeration circuit. For smaller model condensers, two control switches (one per refrigeration circuit) are adjusted to the same pressure setpoint and are wired in parallel to operate a single fan.

Table 1. Fan cycling pressure control settings

Table 2, p. 8 for the fan cycling pressure control

necessary to alt settings on a case by case basis. This is due, in part, to site specific heat loads and varying BTU capacities of indoor evaporator (A/C) units. Contact Trane Product Support for assistance.

er the fan cycling control

fan is controlled with its

y a fan cycling pressure

If either control switch senses a rise in pressure, the fan will turn on. On dual circuit units with multiple fans, operation of each additional fan requires two paralleled pressure control switches (one for each refrigeration circuit). Each set of paralleled switches will be set to the same pressure such that the adjacent fans begin operating at sequentially higher pressure increments. For larger model micro-channel condensers (TR-SCS-MC-111 through TR-SCS-MC-334) the fan cycling pressure control switches are not in parallel. The control switches operate the fan(s) assigned to each refrigeration circuit independently.

Variable Condenser Fan Speed (SA Models)

Used for outdoor installations where ambient condenser air inlet temperatures may fall to -20°F, a variable speed condenser fan motor controller is used to maintain head pressure. The fan speed control is a continual modulation of the motor’s speed. The condenser fan speed controller monitors the refrigerant discharge pressure and as discharge pressure rises, the fan speed increases. The condenser fan speed varies as required to maintain allowable condenser pressures. The fan speed controller is set to maintain the correct condensing pressure. See Table 2 for the variable fan speed pressure control settings.

When used on systems with variable fan speed control is used only on the first fan which is closest to the header. Additional fans use pressure fan cycling control as described in

Fan Cycling (AA Models),” p. 8

eed fa

n to maintain proper head pressure.

multiple condenser fans,

“Condenser

, to assist the variable

Refrigerant Type 1st Fan 2nd Fan 3rd Fan 4th Fan

Cut - in Cut - o ut Cut - i n Cut - out Cut - in Cut - out Cut - in Cu t - o ut

R40 7 C 32 0 psig 24 0 psi g 33 0 psig 25 0 psig 34 0 psig 2 6 0 p si g 345 psig 2 65 p sig

R41 0 A 4 40 p si g 3 3 0 p si g 46 0 p si g 34 5 psi g 47 5 p si g 355 p sig 4 8 5 psi g 37 5 psig

Table 2. Variable fan speed control settings

Refrigerant Type 1st Fan (Variable) 2nd Fan 3rd Fan 4th Fan

Cut - in Cut - o ut Cut - i n Cut - out Cut - in Cut - out Cut - in Cu t - o ut

R40 7 C 24 0 psig 31 5 psi g 32 5 psig 25 5 psig 34 0 psig 2 6 0 p si g 345 psig 2 65 p sig

R41 0 A 3 40 p si g 4 4 0 p si g 46 0 p si g 35 5 psi g 47 5 p si g 365 p sig 4 8 5 psi g 37 5 psig

). The head pressure control valve and the receiver

Flooded Head Pressure Control

Used for outdoor installations where ambient condenser air inlet temperatures may fall to -30°F, flooded head pressure control is used to maintain head pressure during the low ambient temperature conditions. A head pressure control valve and a receiver are used in the refrigeration circuit to back up liquid refrigerant into the condenser coil. The head pressure control valve is a 3-way modulating valve controlled by the discharge pressure (see

8 SS-SVX006C-EN

Figure 3,

p. 9

may be located with the RCU or with the indoor evaporator unit.

en the A/C unit begins to operate, the discharge

Wh pressure rises. pressure control setting ( See is cycled on. If multip pressure fan cycling.

When the pressure reaches the “1st Fan”

Table 1), the condenser fan

le fans are used, they will operate by

Page 9

Introduction

When ambient temperature drops, the discharge pressure drops also. When the discharge pressure drops, the head pressure control valve diverts discharge gas away from the condenser to the receiver. Liquid flow from the condenser is restricted, causing liquid to back up in the condenser.

Flooding the condenser reduces the area available for condensing. The desired

result is to increase the pressure into the condenser, maintaining a minimum discharge pressure during low ambient operation thus ensuring proper condensing temperature. The head pressure control valve requires no adjustment.

Figure 3. Flooded head pressure control diagram

PRESSURE

CHECK VALV E

(SEE NOTE)

RELIEF VALVE

RECEIVER

HEAD PRESSURE CONTROL VALVE

REFRIGERANT

RECLAIM VALVE

This method of controlling head pressure allows the

denser fan to run continuously. While the fan is

con running, the flooded head pressure control valve modulates the amount of discharge gas entering the receiver. As the pressure increases, the valve diverts more discharge gas to the condenser, allowing more liquid to flow from the condenser to the receiver.

When using this method of head pressure regulation there must be enough refrigerant in the system to ensure an adequate charge at the lowest expected ambient temperature in which the system will be operating. A receiver is used to store the extra refrigerant when the condenser is not utilizing it.

LIQUID LINE

REMOTE AIR COOLED

CONDENSER

DISCHARGE LINE

NOTE: SEPARATE CHECK VALVE IS PROVIDED ONLY ON SMALL A/C UNITS UP TO 3 TONS

SS-SVX006C-EN 9

Page 10

Installation

Receiving the Equipment

Your system has been tested and inspected prior to shipment. To ensure that your equipment is received in excellent condition, make a visual inspection of the equipment immediately upon delivery. Carefully remove the shipping container and all protective packaging. Open the electric box and thoroughly inspect the unit for any signs of transit-incurred damage. If there is shipping damage, it must be noted on the freight carrier’s delivery forms before signing for the equipment. Any freight claims must be done through the freight carrier.

Trane ships all equipment FOB factory. Trane is not liable

y equipmen

for an assist in the claim filing process with the freight carrier. Should any damage be present, notify Trane Product Support prior to attempting any repairs. Check the equipment against the packing slip to see if the shipment is complete. Report any discrepancies to the appropriate authority.

A Data Package has been sent wi this manual, system drawings, applicable SSDs and other appropriate instructions based on the configuration of your unit and options selected. The data package has been shipped with your unit in a clear plastic bag. These documents need to be kept with the unit for future reference.

t damage while in transit. Trane can

th your un

it. It contains

Rigging

WARNING

Improper Unit Lift!

Failure to properly lift unit in a LEVEL position could result in unit dropping and possibly crushing operator/ technician which could result in death or serious injury, and equipment or property-only damage.

Test lift unit approximately 24 inche proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level.

WARNING

Heavy Object!

Failure to follow instructions below could result in unit dropping which could result in death or serious injury, and equipment or property-only damage.

Ensure that all the lifting equipm rated for the weight of the unit being lifted. Each of the cables (chains or slings), hooks, and shackles used to lift the unit must be capable of supporting the entire weight of the unit. Lifting cables (chains or slings) may not be of the same length. Adjust as necessary for even unit lift.

ent used is properly

cm) to verify

s (61

Site Preparation

Our Air-cooled Condensers are designed with easy service access in mind. Install the condenser in a secure location where it cannot be tampered with and the main power disconnect switch cannot be inadvertently turned Off. Allow access to the unit for routine operation, servicing and for necessary maintenance. The components on outdoor condensers are accessed through the top by removing the fan assembly panel.

The electric box is accessed at the header end of the unit.

ate the unit where the fan(s) are not likely to draw dirt

Loc and debris into the coil fins. Refer to the installation drawing provided with your unit for the dimensions.

The condenser must be kept level to operate properly.

Note: Working clea

established prior to mounting the unit. Refer to local and national electrical codes.

rance requirements need to be

The unit must be lifted vertically and kept in a level p forklift or attach an overhead lifting sling. The unit may be lifted with an overhead sling attached to the top of the mounting support legs. Use an appropriate lifting device that has the capacity to safely handle the weight of the equipment. A weight table is provided on the installation drawing supplied with your unit. If using an overhead lifting device, use spreader bars that exceed the cabinet width to avoid crushing the sides of the unit.

Remote condensers are shipped on movi stored in a dry location prior to installation. To prevent damage when lifting the unit, all available lifting eyes on the cabinet must be used.

Note: En

. Move the unit with a suitable device such as a

osition

a skid to facilitate

ng prior to installation. The unit should always be

sure the mounting legs are fully extended when

the uni

t is raised.

10 SS-SVX006C-EN

Page 11

Installation

Figure 4. Rigging

NOTICE

Coil Fins Damage!

Take care not to damage the exposed coil fins on the underside of the cabinet when moving the unit.

Mounting and Placement

Outdoor, air-cooled condensers are designed for mounting to a flat surface. Condenser(s) must not be near steam, hot air or fume exhausts. Avoid overhead obstructions. Ensure the unit is not located above or near noise sensitive areas. If possible, make use of terrain features such as trees and buildings to provide a shaded location. This will minimize the solar load on the unit. Avoid ground level sites that are accessible to the public.

Ensure the mounting lo

cation can the equipment. Refer to the installation drawing for the non-charged system weight.

When installing the unit on a roof, ensure the weight is

equ

ately distributed to the load bearing points. For

ad ground mounted units, install a concrete slab as shown in

Figure 4. The slab should extend below the frost line and

be at lea

st 2 inches higher than the surrounding grade. The slab should extend at least 2 inches beyond the outer profile of the condenser on all sides.

Ensure the condenser legs are fully extended to optimize

flow. Secure the unit wi

air others) to prevent the system from moving during operation. To reduce the vibration transmission to the mounting surface it is recommended that vibration isolators (field supplied by others) be inserted between the mounting rails and the base as shown in

support the weight of

th fasteners (field supplied by

Figure 5, p. 11.

Figure 5. Ground mounting

1 FT.

MAX

PIPE

SUPPORT

STAND

HEX NUT

LOCK WASHER

FLAT WASHER

BUSHING

MOUNTING RAIL

FLAT WASHER

VIBRATION PAD

MOUNTING STUD

SS-SVX006C-EN 11

Page 12

Installation

1x WIDTH

WIDTH

TOP VIEW

The clearance around the unit to the nearest wall or obstruction should be at least 1 time’s (1×) the unit’s width to ensure adequate airflow to the coil(s) (see

Figure 5 and Figure 6). Space multiple units at least 2 times (2×) the

unit’s wi

dth when placing them side by side. Ensure hot exhaust air is not directed toward the air inlet of an adjacent unit. When placing units end to end, allow at least 4 feet of space between units. Avoid areas where heavy snow will accumulate at air inlet and outlet openings.

If the unit(s) are surrounded by three walls or if they are in a pit, spa the nearest walls (see must be equa

ce them at least 2 times (2×) the unit’s width from

Figure 7, p. 12). The top of the unit

l to the height of the walls or the pit. A stack may be used, if necessary, to extend the air discharge. The height of the extension must not exceed 10 feet.

Figure 6. Side clearance

Figure 8. Receiver assembly

Out let

I nl et

Junc ti on Bo x

Out let

Sig ht Glass (O pt iona l)

Heat er Pad

Rota lock Valv e ( 4X) wi th 7/ 8 in. ODS Conn ecti on

I nl et

Pressu re Rel ief Val ve

Base Fram e

Head Pressure Control Valve

For TR-SCS condensers, the head pressure control valve (HPCV) is shipped loose for field installation. The head pressure control valve is to be located at the condenser and brazed in line with the piping between the condenser and receiver. For TR-SCS-MC condensers, the HPCV is factory piped to the receiver.

Refrigerant Piping

Figure 7. Walled areas or pits

WIDTH

STACK

AIR

FLOW

10 FT. MAX.

WIDTH

20 INCH MINIMUM

Receiver

Receivers are provided as an option for systems utilizing flooded head pressure control. Receivers for TR-SCS condensers are provided on a separate mounting base frame. Position optional TR-SCS receiver(s) as close as possible to the condenser inlet/outlet pipe stubs. Secure the receiver base frame to the foundation using the mounting holes in the base. (Receivers for TR-SCS-MC condensers are factory mounted to the condenser frame.)

Split air-cooled systems require a field installed copper discharge line and copper liquid line between the condenser and the evaporator. Dual circuited condensers will require two sets of piping. Refer to the refrigeration diagram provided with your unit for piping details.

Provide a permanent stand or support brace for the inlet/

utlet pipes within one foot of the condenser header to

o prevent undue stress on soldered connections (see

Figure 5, p. 11). The refrigerant piping should be isolated

by vibra

tion isolating supports. Provide supports (clamps or hangers) as necessary every 5 to 10 feet along piping runs to minimize vibration and noise transmission. When sealing openings in walls use a soft flexible material to pack around the piping to reduce vibration transmission and prevent pipe damage.

All refrigerant piping should be installed with high

perature soldered joints. Use standard refrigeration

tem practices for piping supports, leak testing, dehydration and charging of the refrigeration circuits.

Note: Re

fer to the Copeland Applications Data Guide for more detailed information regarding installation of refrigerant piping.

The condenser is shipped with a dry nitrogen holding charge wh

ich must be removed before piping and charging the system. All refrigeration piping should be installed with high temperature brazed joints. Use standard refrigeration practices for piping, leak testing, dehydration and charging of the refrigeration circuits. For copper to copper brazing (piping liquid line or discharge line), phosphorous alloy containing a minimum of 15%

12 SS-SVX006C-EN

Page 13

Installation

silver is recommended. General purpose silver brazing alloy with 45% silver is recommended for brazing dissimilar metals.

Wrap wet rags around the pipes between the areas to be

red

solde

and any nearby refrigeration components (such as the optional head pressure control valve) to keep excessive heat from traveling through the pipe and causing damage. Clear all pipe connections of debris and prep connections for soldering. Use only “L” or “K” grade refrigerant copper piping. Be careful not to allow solder/ piping debris to get inside refrigerant lines. Dry nitrogen should be flowing through the tubing while soldering at a rate of not less than 1–2 CFM (0.03–0.6 M3/minute).

Refrigerant Line Sizing

The following general guidelines may be used to assist in determining the size of the refrigerant lines between the evaporator section and the remote air-cooled condenser.

geran

Note: Refri

and condenser must not exceed 150 feet (total equivalent length). The maximum level drop from the indoor evaporator to the condenser must not exceed 20 feet.

Refrigerant lines to the piping distance between the evaporator and the condenser with consideration to elevation changes. Each valve, fitting and bend in the refrigerant line must also be considered in this calculation. Refer to table below for standard equivalent lengths, in feet, of straight pipe.

Table 3. Pipe equivalent lengths

Equivalent Length (ft) of Straight Pipe

OD (in.)

Line Size

1- 1/ 8 22. 0 12 . 0 1.8 0 . 9 1.5 4. 5

1- 3/ 8 28. 0 15 . 0 2.4 1 . 2 1.8 6. 0

1- 5/ 8 35. 0 17 . 0 2.8 1 . 4 2.0 7. 0

2- 1/ 8 45. 0 22 . 0 3.9 1 . 8 3.0 1 0 . 0

Globe Valve

1/ 2 9 .0 5 . 0 0. 9 0. 4 0. 6 2 .0

5/ 8 12.0 6.0 1 . 0 0.5 0.8 2 . 5

7/ 8 15.0 8.0 1 . 5 0.7 1.0 3 . 5

Refer to the installation manual provided with the A/C system for tables showing the recommended liquid line and discharge line sizes for the A/C system you are installing.

Things to consider when sizing varying BTU capacities of indoor evaporators and the equivalent length of pipe needed between the remote condenser and the evaporator.

If the pressure drop is too high, the capacity of the

pressor decreases, and the power required increases.

com An excessive refrigerant charge will be applied if the volume of the piping is too large. Refrigerant line sizing for discharge and liquid lines should create no more than a  2–3°F pressure drop.

t piping between the indoor evaporator

for split systems must be

Angle Valve

90º

Elbow

45º

Elbow

refriger

sized according

Tee

Line

Tee

Branch

ant piping are the

Note: The size of the condenser pipe connections does

not indicate the size of the refrigerant lines to be used. In cases where the pipe size doesn’t match the size of the connection, reducing fittings must be used to transition between the connection and the pipe.

Discharge Line

Since refrigerant may condense during “Off” cycles, all vertical discharge risers should be designed to prevent liquid refrigerant from flowing back into the compressor. If a condenser is installed above the evaporator, the discharge line should include a shallow P-trap at the lowest point in the piping (see

The highest point in the discharge line should be abov e the

ndenser coil. Install an inverted trap at the condenser

co inlet to prevent liquid refrigerant from flowing backwards into the hot gas riser during off cycles. Shallow P-traps must be included in the discharge line for every 20 feet of vertical rise. All horizontal refrigerant lines should be pitched in the direction of flow at least 1/4 inch per 10 feet.

Discharge line velocities must be a minimum of 500 fpm for horizontal runs

and 1,000 fpm for vertical risers to ensure oil is returned to the compressor at both full and partial load operating conditions.

It is important that the discharge li degree of pressure drop. This will ensure the refrigerant flows at a velocity high enough for the refrigerant vapor to carry the oil with it to the condenser and to prevent the oil from returning to the compressor.

Compressor discharge pressure is always higher than

densing pressure due to the line pressure drop. The

con line pressure drop also causes a change in the refrigerant saturation temperature. The discharge line needs to be sized so the pressure drop won’t cause a corresponding change in saturation temperature exceeding 2°F.

Discharge piping is typically s drop of 5 psi (+/- 50%), which results in only a 1/2% to 1% reduction in compressor capacity. Pressure drops greater than 10 psi will impair system performance.

Figure 9, p. 14 depicts a typical piping diagram when the

ndenser is located

at a higher level than the indoor evaporator. In this situation, it is especially important to size the discharge line properly. If the discharge line is sized correctly for full load operation, the velocity of the gas may be too low during minimum load conditions to carry the refrigerant oil vertically through the discharge line to the condenser coil.

Decreasing the size of the discharge line will increase the

erant velocity, however, it will also restrict the flow of

refrig refrigerant at full load conditions creating an excessive refrigerant pressure drop.

To remedy this, dual risers may be used as shown in

Figure 10, p. 14. Discharge riser #1 should be sized to

allow the

refrigerant gas to flow at a sufficient velocity

during minimum load conditions to carry the oil.

Figure 9, p. 14).

ne is

sized with a certain

ized for a total line pressure

SS-SVX006C-EN 13

Page 14

Installation

PITCH IN DIRECTION OF REFRIGERANT FLOW

(DISCHARGE & LIQUID LINES)

TRAP IN BOTTOM OF COLUMN

WITH MINIMUM TRAP DEPTH POSSIBLE

TRAP EVERY 20 FEET WITH MINIMUM TRAP DEPTH POSSIBLE

PITCH 1/4 INCH FOR EVERY 10 FEET OF RUN

CONDENSER

INVERTED TRAP

AIR CONDITIONER

PITCH IN DIRECTION OF REFRIGERANT FLOW

DISCHARGE LINE

LIQUID LINE

PITCH IN DIRECTION OF REFRIGERANT FLOW

(DISCHARGE & LIQUID LINES)

TRAP IN BOTTOM OF COLUMN

WITH MINIMUM TRAP DEPTH POSSIBLE

TRAP EVERY 20 FEET WITH MINIMUM TRAP DEPTH POSSIBLE

PITCH 1/4 INCH FOR EVERY 10 FEET OF RUN

CONDENSER

INVERTED TRAP

AIR CONDITIONER

PITCH IN DIRECTION OF REFRIGERANT FLOW

DISCHARGE LINE(S)

LIQUID LINE

RISER #2

RISER #1

Riser #2 should be sized in such way that the inside diameter of riser #1 and #2 will together have a combined area allowing for a flow velocity that’s suitable to carry the refrigerant oil to the condenser during peak load conditions.

Use a trap between the 2 risers so riser #2 will be sealed off

en the trap fills with oil during partial load operation,

wh thus diverting the flow of refrigerant to riser #1.

Figure 9. Piping installation

Figure 10. Dual riser piping

Liquid Line

The velocity of refrigerant in the liquid line is less critical because liquid refrigerant and oil are mixed thoroughly in the liquid state. The main concern when sizing the liquid line is to maintain a solid head of liquid refrigerant entering the thermostatic expansion valve (TXV). If the refrigerant pressure falls below its saturation temperature, a portion of the liquid refrigerant may change into vapor. Vapor will cause flashing and prevent the TXV from functioning properly. As flashing begins, the rate of pressure loss increases.

The liquid refrigerant is sub-cooled slight

ration temperature. Sub-cooling must be sufficient to

satu allow the necessary pressure drop without approaching a saturation condition where gas flashing could occur. Under normal operation the refrigerant is sufficiently cooled as it leaves the condenser to allow for normal line pressure drops.

Liquid line size is to be selected based on a pressure drop

uivalent to 2°F sub-cooling.

Operating liquid line velocities should be less than  300 fpm to avoid liquid hammering during solenoid operation. If the condenser is installed below the evaporator section, the installer must observe the pressure changes that occur if the elevation change. See

Table 4, p. 15 that follows for the vertical pressure drops

for the two types

of refrigerant used.

ly below its

14 SS-SVX006C-EN

Page 15

Installation

Table 4. Pressure drops

Refrigerant Type

R40 7 C 0. 4 7

R41 0A 0 .43

Note: When a receiver is used with the equipment, it

should be below the level of the condenser. The liquid line from the condenser to the receiver should be liberally sized to allow the refrigerant to freely flow from the condenser to the receiver. The total refrigerant line pressure drop must not exceed 14 psig across the condenser and the interconnecting piping to the evaporator and condenser sections.

Pressure Drop in

PSI/ft (Risers)

Head Pressure Control Valve Installation (TR-SCS condenser only)

Refer to the refrigeration diagram provided with your unit and see pressure control valve to the condenser and receiver.

Figure 3, p. 9 for details on piping the head

Receiver Pipe Installation (TR-SCS condenser only)

Receiver inlets and outlets are equipped with RotoLock valves that must have brazed pipe connections. It is important to remove the valve from the adapter on the receiver before brazing the refrigerant piping to it. Wrap wet rags around the valve body to prevent the internal parts from being damaged by the heat.

After brazing the pipe to the valve, remove and replace the

eflon O-ring in the RotoLock adapter with the new one

T which is cable-tied to the valve. When re-attaching the valve to the receiver, apply thread lock to the adapter threads to prevent it from vibrating loose. Tighten the valve to the receiver and check it for leaks when performing the steps given in Preparing System for Charging section.

Main Power and Control Wiring

Systems equipped with a remote condenser require field wiring (see main power wiring to the remote condenser control box. The condenser is provided with main power and control terminal positions for connection of the field wiring (supplied by others). Additional conductors may be necessary depending on options selected.

Verify that the main power supply coincides with voltage, phase and frequency information specified on the system nameplate (see voltage me voltage specified on the nameplate. The nameplate also provides the full load amps (FLA), the current that the unit will draw under full design load, the minimum circuit ampacity (MCA) for wire sizing, and the maximum fuse or HACR (Heating, Air Conditioning, Refrigeration) breaker size (MAX FUSE/CKT BKR) for circuit protection. The unit’s nameplate is located inside the electrical box.

Pilot holes or electrical knock-outs for the the bo POWER INPUT is nearby. The main power wires are terminated at the line side of the service disconnect switch located within the electric box. A separate equipment ground lug is provided within the electrical box for termination of the earth ground wire.

The control transformer supplied with the equipment is

ed and selected based upon the expected load for the

siz system.

Figure 10, p. 14). The installer must provide

the

Figure 12, p. 16). The supply

asured at the unit must be within ±10% of the

conduit are in

ttom of the electric box. A label stating MAIN

NOTICE

System Component Damage!

Do not connect any additional loads to the system control transformer. Connecting additional loads to the factory supplied control transformer may result in overloading of the transformer.

Utility Connections

WARNING

Proper Field Wiring and Grounding Required!

Failure to follow code could result in death or serious injury.

All field wiring MUST be performed by qualified pe

rsonnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state/national electrical codes.

SS-SVX006C-EN 15

Page 16

WITH NFPA 70, N.E.C.)

OPTIONAL CONTROL WIRES

Installation

Figure 11. Field wiring

MAIN POWER SUPPLY

(QUANTITY VARIES)

RECEIVER HEATER WIRES

(IF APPLICABLE -30° F)

ELECTRIC BOX

INTERCONNECTING FIELD WIRING (TO BE INSTALLED IN ACCORDANCE

REMOTE AIR COOLED CONDENSER

Figure 12. Sample Nameplate

Sales Order Number: 440486_210 Model Number: TR-GPS-100-D Item Number: GPS_SUPERBOM Serial Number: 10033393

Electrical Data: SCCR:

1 kA RMS Symmetrical

Voltage: 208 No. Wires: 4 FLA: 91.6

Pump Motor (1): HP: 10 Pump Motor (2): HP: Drycooler Fan Qty: Drycooler Fan: HP: 1.5 FLA: 6.5 Minimum Installation Clearance: 0.0 in.

Suitable for Outdoor Use Date of Manufacture: 06/16 Q.A. Acceptance:

STULZ Air Technology Systems, Inc.

Frederick, Maryland, USA

Phase: 3

(Including Ground)

MCA: 98.1

Manufactured by

MFS: 110 A

Hz: 60

FLA: 26.1 FLA: 26.1

NOTICE

Compressor Damage!

Improper wire connections could result in the reverse rotation of the fan. To correct this problem, exchange any two of the incoming main power wires at the main power circuit breaker. Do NOT rewire the unit’s individual components.

Identify the options that were purchased with your system to confirm which field connections are required. The number of control conductors needed will vary depending on the options and type of control method being used. Refer to the electrical drawing supplied with your unit to determine the total number of interconnecting conductors required for your equipment and for the proper wire terminations.

Condenser Enable Feature

As an option, the installer may wire a 2-conductor control cable between the A/C system and the condenser, so the system controller may enable the condenser to operate only when the compressor is running. You must remove the jumper (X2:1-X2:2) from the remote condenser terminal board (see the condenser wiring diagram). Wire 24 VAC control conductors from the terminal board within the A/C unit to the remote condenser terminal board. If control wires are not installed (and the jumper remains in place), the condenser is always enabled and will turn on and off based on the condenser’s pressure control switch setting(s).

The condenser enable feature may be used in high

mbient temperature locations to prevent the condenser

a from running unnecessarily. In some cases, outdoor temperature conditions may raise refrigerant line pressures high enough to cause the condenser fans to start operating even if the compressor is not on.

Receiver Heater Wiring

If separate base frame mounted receiver(s) are used for TR-SCS condensers, it will be necessary to provide a 2conductor cable for the heating pad(s). Connect the wires from the terminals inside the junction box on the receiver base (see condenser electric box. Drill an entrance hole in the condenser electric box or use an available knock-out if furnished. See the wiring diagram for the correct wire terminal positions.

Figure 8, p. 12) to the terminal block in the

16 SS-SVX006C-EN

Page 17

Installation

System Charging

Refrigerant charging pressures vary depending on the type of refrigerant used in the unit. Before charging, check the unit nameplate to confirm the type of refrigerant to use.

Table 1 and Table 2 show the temperature/pressure

characteristics for R407C and R410A.

R407C/R410A Refrigerant

R407C and R410A are blended refrigerants recognized for being safer for the environment. These refrigerants contain no chlorine, the component in HCFC’s that destroys the earth’s ozone layer. However, the same care should be taken to prevent leakage because R407C and R410A can contribute to the greenhouse effect if released. If the refrigerant gas is released in an enclosed space, it can suffocate.

Refrigerants that are multi-component blends have component parts change in composition and saturation temperature as evaporation and condensation occur. Typically, the composition of R407C vapor is different than that of R407C

Table 5. TR-SCS condenser refrigerant charge weights

TR-SCS Model Number

01 2 - S 0. 6 2. 7 0. 5 2. 6

01 8 - S 0. 6 2. 7 0. 5 2. 6

02 4 - S 1. 3 5. 4 1. 0 5. 2

03 6 - S 1. 9 8. 1 1. 5 7. 8

06 0 - S 2. 8 1 2 .2 2. 2 11 . 7

06 0 - D* 2. 8 1 2 .2 2. 2 11 . 7

09 6 - S 3. 6 1 5 .7 2.8 1 5 . 1

09 6 - D* 3. 6 1 5 .7 2.8 1 5 . 1

12 0 - S 5. 4 2 3 .6 4.2 2 2 . 7

12 0 - D* 5 . 4 2 3 .6 4. 2 2 2 .7

14 4 - S 7. 2 3 1 .4 5.6 3 0 . 2

14 4 - D* 7 . 2 3 1 .4 5. 6 3 0 .2

19 2 - S 8. 2 3 5 .9 6. 4 34 . 5

19 2 - D* 8 . 2 3 5 .9 6. 4 3 4 . 5

25 2 - S 8. 2 3 5 .9 6.4 3 4 . 5

25 2 - D* 8 . 2 3 5 .9 6. 4 3 4 .5

27 6 - D* 12 . 4 53 . 8 9 .7

31 2 - D* 12 . 4 53 . 8 9 .7 51 . 7

44 7 - D* 16 . 5 71 . 8 12 . 9 69 . 0

52 5 - D* 18 . 4 80 . 1 1 4 .4 7 7 . 0

59 7 - D* 18 . 4 80 . 1 1 4 .4 7 7 . 0

68 3 - D* 24 . 6 106 . 9 19. 2 102 . 8

94 0 - D* 32 . 6 141 . 9 25. 5 136 . 5

13 6 6 - D* 49 . 1 213 . 7 38. 4 205 . 6

with different volatilities that result in a

R407C Charge

-20°F Ambient and Higher

R407C Charge

(Condenser with

Receiver)

-30°F Ambient -20°F Ambient & Higher -30°F Ambient

liquid within a contained system. The composition of liquid R407C refrigerant remains relatively constant, however, the refrigerant vapor tends to separate into its component parts even when circulating.

Estimating Refrigerant Charge

When charging a system with R407C or R410A refrigerant it will be necessary to weigh in the refrigerant. Calculate the amount of refrigerant needed by adding the amount of refrigerant required for the A/C unit (shown in the A/C unit IOM provided separately) plus the refrigerant for the condenser (

ping (

Table 5 and Table 6 may be used to estimate the minimum

amount of R407C or R410A refrigerant needed to charge TR-SCS or TR-SCS-MC condensers by model number. In cases of dual circuited condensers, divide the total weight (lb) shown by 2 to determine the amount of refrigerant needed for each circuit. The values shown in Table 5 and Table 6 are conservative for the purpose of preventing the system from being overcharged.

(lb)

Table 5 and Table 6) plus the refrigerant

Tabl

e 7

R410A Charge

(Condenser with

Receiver)

51 . 7

SS-SVX006C-EN 17

Page 18

Installation

Table 6. TR-SCS-MC condenser refrigerant charge weights (lb)

TR-SCS Model

Number

01 5 - S 0. 8 4 .4 0. 8 4. 0

01 8 - S 0. 9 4 .5 1. 0 4. 2

03 1 - S 1. 3 6 .9 1. 3 6. 4

03 1 - D* 1. 6 8 .8 1. 6 8. 0

03 5 - S 2. 0 11 . 8 2. 1 11 . 0

03 5 - D* 2. 6 13 . 8 2. 6 12 . 8

05 6 - S 2. 0 11 . 8 2. 1 11 . 0

05 6 - D* 2. 6 13 . 8 2. 6 12 . 8

07 1 - S 3. 8 19 . 1 3. 9 17 . 8

07 1 - D* 4. 8 24 . 4 4. 8 22 . 6

11 1 - S 3. 8 19 . 1 3. 9 17 . 8

11 1 - D* 4. 8 24 . 4 4. 8 22 . 6

12 8 - D* 5. 8 36 . 4 6. 0 33 . 8

14 2 - D* 7. 6 38 . 2 7. 8 35 . 6

22 3 - D* 7. 6 38 . 2 7. 8 35 . 6

26 4 - D* 10 . 4 41 . 0 10 . 8 38 . 6

33 4 - D* 10 . 4 41 . 0 10 . 8 38 . 6

Note: * Dua l r ef riger at ion circuit s.

R407C Charge

-20°F Ambient & Higher

Table 7. Weight of refrigerant (lb/100 ft of type L tubing)

Line Size

O.D.

1/ 2 6. 5 1 5.88 0 . 8 7 1. 27

5/ 8 10. 4 6 9. 4 4 1.40 2 . 0 3

7/ 8 21. 7 3 19 . 6 2 2. 91 4. 22

1 1 / 8 37 . 04 33.4 4 4.9 5 7 . 20

1 3 / 8 56 . 43 50.9 5 7.5 5 10 . 9 7

1 5 / 8 79 . 87 72.1 1 10. 6 8 15 . 5 3

2 1 / 8 1 75. 3 2 15 8 . 29 2 3 .44 34.0 9

Liquid Line 105°F

R40 7C R41 0 A R4 0 7C R41 0 A

Discharge Line 140°F

Example: Estimate the amount of refrigerant required for a system using R407C refrigerant consisting of a 5 ton A/

R407C Charge

(Condenser with

Receiver)

-30°F Ambient -20°F Ambient & Higher -30°F Ambient

R410A Charge

Preparing System for Charging

1. With all the system piping connections made, perform

Condensing

a dry nitrogen leak detection test on the system. Using dry nitrogen only, pressurize the system to 150 psig. Ensure all service and solenoid valves are energized open and that no part of the system is isolated from the pressurized nitrogen (liquid, suction or discharge lines and reheat coil).

2. Since there is no refrigerant in the s this point, leaks may be detected by observing if there has been a change in the standing pressure after 12 hours. A significant drop in pressure indicates a leak in the system that needs to be repaired. After the system is determined to be free of leaks, you may evacuate the system.

C unit connected with a 1/2-inch x 30 foot liquid line and  7/8-inch x 30 foot discharge line to a TR-SCS-060-SAA 

-30 °F condenser with flooded head pressure control and receiver.

A/C Unit = 5.2 lbs.

+ Condenser w/Receiver = 12.2

+ ½

Liquid Line 30 x 6.51/100 = 1.953 lbs.

lbs.

+7/8 inch Discharge Line 30 x 2.91/100 = 0.873 lbs.

Estimated Refrigerant Charge = 20.226 lbs.

Round off to the nearest lb> = 20 lbs.

Compressor Damage!

A proper vacuum must be drawn on the refrigerant system to remove moisture prior to charging. If this is not done the refrigerant charge will combine with moisture in the pipes to form an acid that will eventually lead to compressor failure. A triple evacuation procedure with dry nitrogen is recommended especially for systems with newly installed refrigerant piping.

Note: A

vacuum pump should be used that can evacuate

NOTICE

the entire volume of the A/C system, including

R410A Charge

(Condenser with

Receiver)

ystem to detect at

18 SS-SVX006C-EN

Page 19

Installation

newly installed or existing piping. It is essential to use a well-maintained pump that is in good operating condition. Always ensure it contains clean, fresh oil. Change the oil in the pump every 20 minutes to maintain its ability to remove moisture.

Note: U

3. After ensuring there are no leaks, relieve pressure and

Note: Wh

4. If you cannot evacuate the system below 1500

5. If no leaks are detected after the initial vacuum, release

6. After two hours, release the pressure. Then turn on the

7. After two hours release the pressure. Turn on the

8. Replace the Schrader valve cores if you removed them

SS-SVX006C-EN 19

se high quality hoses ensuring they are free of defects and don’t leak. It is recommended to use copper tubing instead of hoses if possible due to the low vacuum that must be attained when evacuating the system. The use of short, large diameter hoses helps reduce evacuation time.

cuate the entire system while maintaining all the

eva solenoids and hot gas reheat valves open. Pull an initial vacuum of 1500 microns or lower using the suction and discharge service ports and the service port of the receiver (if applicable).

en pulling a vacuum, the Schrader unnecessarily restrict the openings, increasing the evacuation time. During the evacuation process it is recommended to remove the Schrader valve cores with a Schrader valve removal tool and draw the vacuum through the port on the removal tool.

icrons, close the vacuum pump isolation valve and

m perform a rateof-rise test by observing the standing pressure overtime. If the pressure rises slowly (up to 200 microns in 15 minutes) it indicates moisture is in the system that still needs to be boiled off. Proceed to step #5. If the pressure rises rapidly up to atmospheric pressure (more than 50 microns per minute) it indicates a leak that wasn’t detected during step #2. In this case troubleshoot the entire system for leaks and repair them. Then begin the initial evacuation process again starting at step #3.

cuum an

the va dry nitrogen. Allow the system to stand for two hours with the dry nitrogen charge. This gives time for the nitrogen molecules to disperse in the system absorbing moisture.

um p

vacu down to 1500 microns or less. Close the vacuum pump isolation valve and pressurize the system again with dry nitrogen and allow the system to stand for two hours as in step #5.

um pump and complete the process of evacuating

vacu the system, this time with a goal of achieving a 250micron vacuum or less. Close the vacuum pump isolation valve. When you can hold the vacuum at 500 microns or lower for at least 2 hours with no significant rise in pressure, the system is ready to charge.

ring the evacuation steps. You may now introduce

du the refrigerant charge through the Schrader valves.

d pressurize the system with 2-3 lb of

ump and evacuate the system a second time

valves will

Refrigerant Charging Procedures

R407C and R410A refrigerant must be weighed in when performing the charge. Ensure an adequate supply of refrigerant is available before beginning. Calculate the minimum amount of refrigerant needed for your system.

When charging a system using a blended refrigerant, it is

ential that the composition of the refrigerant is

ess maintained. To ensure correct composition, introduce the refrigerant (R407C or R410A) into the system in liquid form rather than vapor form. Cylinders which are not provided with dip tubes should be inverted to allow only liquid refrigerant to charge the system. Keeping the temperature of the cylinder below 85°F will help to maintain the correct refrigerant composition while the cylinder is emptied.

NOTICE

Equipment Damage!

POE oil is used in systems with R407C or R410A refrigerant. POE oil quickly absorbs moisture when exposed to air. High POE oil moisture levels react with refrigerant to form acid which results in system contamination. Keep the entire system sealed as much as possible and minimize exposure of the POE oil to outside air.

Note: Re

They will ensure your equipment is correctly installed and is o provides years of trouble-free service while operating at its highest efficiency. They will also enter the necessary Information for you on the Warranty Registration and Start-up Checklist and ensure it is filed with Trane for your warranty protection.

frigerant charging must be performed by a

ed air conditioning technician. Trane

qualifi recommends using the services of our Field Service Department to assist in start-up and commissioning. We have assembled a highly qualified team of experienced industry professionals who provide expert start-up services anywhere in the world.

perating properly. This will help to ensure your unit

WARNING

Confined Space Hazards!

Failure to follow instructions below could result in death or serious injury.

Do not work in confined spaces where refrigerant or other h leaking. Refrigerant or other gases could displace available oxygen to breathe, causing possible asphyxiation or other serious health risks. Some gases may be flammable and or explosive. If a leak in such spaces is detected, evacuate the area immediately and contact the proper rescue or response authority.

Initial System Charge

Follow the step by step instructions below to charge sy

azardous, toxic or flammable gas may be

stems using

R407C and R410A refrigerant. The initial

Page 20

Installation

charge will be performed by introducing liquid refrigerant (R407C or R410A) to the discharge side of the compressor or an available liquid line port with the A/C unit turned Off.

1. Bleed air from hoses and break the vacuum by pplying l

su discharge port near the compressor until the pressure is equalized. This holding charge allows the low pressure switch to hold enabling the compressor to operate throughout the process of charging the system.

Fine Tuning the System Charge

Once the initial charge is completed, additional refrig will need to be added with the unit running until the superheat temperature can be maintained between 12– 15°F.

2. Disconnect the refrigerant cy

side of the compressor and connect it to the suction side.

3. Start the A/C system and use the system controller to

ower th

l actual room temperature thus ensuring cooling remains on as the unit is charged.

iquid refrigerant (R407C or R410A) to the

erant

linder

from the discharge

e room temperature setpoint 3–5°F below

NOTICE

Compressor Damage!

When fine tuning the charge during low ambient co the condenser coil to raise the pressure. The fan closest to the header must be running. Refrigerant R407C operates at a lower pressure than R410A. When fine tuning the charge, ensure the pressures are correct for the type of refrigerant used.

0ºF Fan Cycling and -20ºF Variable Speed Control

The following instructions are for charging systems provided with condenser fan cycling or variable fan speed control during low ambient conditions using R407C or R410A refrigerant.

1. Block off the intake air to th

ns it will be necessary to restrict the airflow across

nditio

e condense until a constant discharge pressure can be obtained. This will lower the possibility of overcharging (for units with fan cycling only).

a. R407C Refrigerant- Allow the discharge pressure to

ise to 325–350 psig and hold it constant.

b. R410A Refrigerant- Allow the discharge pressure to

ise

to 445–480 psig and hold it constant.

r with cardboard

NOTICE

Compressor Damage!

Failure to follow instructions below could result in compressor failure and/or reduced compressor life.

To prevent compressor liquid slugging, only add liquid in extreme caution to meter liquid refrigerant into the suction line slowly. If liquid is added too rapidly, compressor oil dilution and oil pumpout could occur.

2. Slowly meter liquid refrigerant through

3. Take a superheat temperature reading near the feeler

4. While monitoring the pressure, t

5. If necessary, (slowly) add liquid refrigerant to the

6. If the unit has hot gas reheat (optional), the previous

Important: Rem

-30 °F Flooded Head Pressure Control

Note: For units using flooded head pressure control, a

Note: It is important

Perform the initial system charge hot gas bypass, hot gas reheat, etc. The condenser fan nearest the condenser header should be operating continuously. If not change the fan control setting to force continuous operation. All other fans, if additional fans exist, should be off during this time.

ction line when the compressor is running. Use

the su

the suction

while watching the pressure gauge and

side monitoring superheat and sub-cooling temperatures.

bulb from temperature measuring device being well insulated. The ideal superheat temperature is 10–15°F. Maximum allowable superheat temperature is 20°F.

temperature reading on the output side of the condenser. The sub-cooling temperature should be 10–20°F.

ction side

step must be open to allow refrigerant to flow into the reheat coil to obtain the proper amount of refrigerant charge. This can be done by using the system controller to enable a call for dehumidification (lower the humidity setpoint). This process may need to be repeated several times. After cycling the system through the hot gas reheat cycle, recheck the system charge with the system only in the Cooling mode.

the thermostatic e

to achieve the sub-cooling temperature.

s are still followed except the hot gas reheat valve

ove the blockage to the air intake of the condenser. Fill out the applicable sections of Warranty Registration and Start-Up Checklist.

receiver is used to store the refrigerant during the time the condenser is not utilizing the extra refrigerant charge.

not to exceed 80% of the total condenser and receiver volume to allow room for expansion.

xpansion valve with the

ake a su

. Ener

b-cooling

gize all solenoids,

20 SS-SVX006C-EN

Page 21

Installation

The head pressure control valve setting is printed on the valve. This setting is the lowest head pressure that will be maintained during unit operation. Add refrigerant to the system (slowly metering). Charge the unit until you reach the HGBP valve setting if applicable.

Set up the HGBP valve and disable the solenoid after

justing. Slowly continue to meter in refrigerant until you

ad reach the head pressure control valve setting printed on the valve (225 psig for R407C; 290 psig for R410A).

All other low ambient controls should not be enabled

uring

the final charging procedure, deenergize the

d solenoids to prevent operation. It is best to under charge the system and operate the unit in the cooling mode to achieve this, otherwise you may add refrigerant above the valve setting and then will be unable to test the head pressure control valve operation.

The head pressure control valve modulates to maintain system h

ead pressure; you will witness this if the above procedure is strictly followed. Under low ambient conditions with the header fan functioning, the head pressure will lower during operation. The valve will not allow the pressure to drive below the printed setting on the valve. Check the system superheat and sub-cooling temperatures.

Turn the unit off for 15–30 minutes. Restart the system and

serve the operating pressures. The suction pressure

ob should not dip or drive below the low pressure switch setting.

Checking the Charge

To ensure you are not over charged, set up the condenser fan to mainta

in pressure (320 psig for R407C; 440 psig for R410A) or your summer maximum operating head pressure. Hold the pressure steady at this setting. You should observe that cycling “Off” on head pressure will not occur now or during warmer temperatures.

If a refrigerant level sight glass is included on the side of

eceiver (optional), it may be used to assist in charging

the r the air conditioning system. The proper charge can be confirmed by viewing the level of refrigerant in the receiver while the unit is running at an elevated discharge pressure (320 psig for R407C; 440 psig for R410A).

Add refrigerant charge until the refrigerant appears in the sight glass indicating th

e receiver is 80% filled. When the level of refrigerant in the receiver reaches the sight glass, the unit is fully charged.

Note: Remove

the blockage to the air intake of the

condenser.

Final Adjustm

Now you may adjust the condenser with low ambient control. Th

ent

fan settings to assist

e following settings have

proven effective:

R407C Refrigerant

Fan 1 - 320 psig cut-in; 240 psig cut-out

Fan 2 - 330 cut-in; 250 cutout

Fan 3 - 340 cut-in; 260 cutout Fan

Fan 4 - 345 cut-in; 265 cutout

EC Fan (Fan 1 on TR-SCS Condenser) - 240 psig start;

65 psig differential

R410A Refrigerant

Fan 1 - 440 psig cut-in; 330 psig cut-out

Fan 2 - 460 cut-in; 355 cutout

Fan 3 - 475 cut-in; 365 cutout Fan

4 - 485 cut-in; 375 cutout

EC Fan (Fan 1 on TR-SCS Condenser) - 340 psig start;

100 psig differential

Fill out the applicable sections of the Warranty

gistration and Start-Up Checklist.

Refrigerant Characteristics

Pressure/Temperature Settings

The table below is provided to assist with the normal settings of the system for R407C and R410A refrigerant. Where applicable, minimum and maximum settings are given along with normal operating pressures.

Note: Th

Table 8. Refrigerant pressure/Temperature settings

Sub - co ol in g ° F 1 0 5 20

Sup er heat ° F 15 10 20

Des i g n Co n d e n si n g Te m p. @ 9 5 ° F Am b ie

Suct io n Pre ssu r e ( p sig) - R40 7C

Suct io n Pre ssu r e ( p sig) - R41 0A

Fan Cy clin g Con t r o l- Fan On ( p sig) - R40 7 C

Fan Cy clin g Con t r o l- Fan On ( p sig) - R41 0 A

Fan Sp eed Cont r o l ( psi g) - R40 7 C

Fan Sp eed Cont r o l ( psi g) - R41 0 A

Saturated Refrigerant Pressure

The following refrigerant vapor pressure tables are provided for reference for R407C and R410A refrigerant.

e operating pressures for R410A refrigerator

significantly higher than R407C.

Normal Min Max

12 5 1 0 5 140

70 55 85

13 0 1 0 5 155

32 0 2 4 0 340

44 0 3 3 0 480

32 0

44 0

SS-SVX006C-EN 21

Page 22

Installation

Table 9. R407C refrigerant vapor pressure

R407C Refrigerant

Temperature (°F) Pressure (psid)

Saturated Evaporating Temperature (Dew Point

Saturated Condensing Temperature (

Saturated Vapor)

20 37 . 9

22 40 . 1

24 42 . 3

26 44 . 7

28 47 . 1

30 49 . 6

32 52 . 1

34 54 . 8

36 57 . 5

38 60 . 3

40 63 . 2

42 66 . 1

44 69 . 2

46 72 . 3

48 75 . 5

50 78 . 8

Bubble Point

Saturated Vapor)

95 20 9

10 0 22 5

10 5 24 2

11 0 26 0

11 5 27 9

12 0 29 8

12 5 31 9

13 0 34 1

13 5 36 3

14 0 38 7

Table 10. R410A refrigerant vapor pressure (continued)

R410A Refrigerant

Temperature (°F) Pressure (psid)

Saturated Evaporating Temperature

32 10 1

34 10 5

36 10 9

38 11 4

40 11 8

42 12 3

44 12 8

46 13 3

48 13 7

50 14 3

55 15 5

60 17 0

65 18 5

70 20 1

75 21 8

80 23 6

85 25 5

90 27 4

95 29 5

10 0 318

10 5 341

11 0 365

11 5 391

12 0 418

12 5 446

13 0 477

13 5 508

14 0 541

Table 10. R410A refrigerant vapor pressure

R410A Refrigerant

Temperature (°F) Pressure (psid)

Saturated Evaporating Temperature

20 78 . 4

22 81 . 9

24 85 . 5

26 89 . 2

28 93 . 1

30 97

22 SS-SVX006C-EN

Page 23

1. The refrigerant then flows to the condenser coil. The

high temperature, high-pressure gas from the compressor is cooled by the flow of air through the condenser coil and is condensed into a high-pressure liquid.

2. For cold weather applications using flooded head

essure control, the low temperature high-pressure

pr liquid refrigerant flows to a receiver. The receiver acts as a storage tank for the liquid refrigerant that is not in circulation.

3. The refrigerant flows through a liquid sight glass. This

vice shows the presence of air, moisture and the

de condition of the refrigerant in the system.

4. The low temperature high pressure liquid refrigerant

flow

then and evaporates back into a gas.

5. The refrigerant gas is then drawn back to the

compressor and the

The refrigeration circuit must be tested at start-up.

s to the evaporator where it removes heat

cycle is repeated.

Installation

SS-SVX006C-EN 23

Page 24

Startup and Commissioning

Operation

For new installations, ensure the unit is ready to operate by going through the Checklist for Completed Installation, located in Appendix A, prior to start-up.

Note: A Wa

Test cooling operation by adjusting the temperature setpoint at come on and the suction line temperature should gradually drop.

Ensure the fan(s) are rotating correctly and freely without

y unusual noise.

Note: Start-u

rranty Registra provided with the unit data package. It should be completed during start-up and sent to Trane. This checklist should be used as a guideline for items that need to be confirmed during start-up.

e system controller. The compressor should

p mu

st be performed by a qualified journeyman, refrigeration mechanic or an air conditioning technician. Refer to the separate controller operation instructions sent in the data package with your unit.

Operational Description

When used with a Trane indoor evaporator unit, the A/C system compressor starts then the condenser fan(s) start. Operation of the condenser fans is dependent on the head pressure control method used.

Remote air-cooled condensers may stand-alone operation. In this case the fans begin operating when power is turned on.

Refrigerant flowing from the evaporator in the form of a low pressure gas, enters the compressor where it is compressed into a high temperature, high pressure gas.

tion and Start-Up Checklist is

be configured for

24 SS-SVX006C-EN

Page 25

Maintenance

WARNING

Hazardous Service Procedures!

Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or serious injury.

Technicians, in order to protect themselves from potential electrical, mechanical, and chemical hazards, MUST follow precautions in this manual and on the tags, stickers, and labels, as well as the following instructions: Unless specified otherwise, disconnect all electrical power including remote disconnect and discharge all energy storing devices such as capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. When necessary to work with live electrical components, have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these tasks.

Periodic General Maintenance

Systematic, periodic general maintenance of the condenser is recommended for optimum system performance. General maintenance should include, but is not limited to the following:

1. Tighten electrical connections.

2. Clean the interior of the unit.

3. Inspect the unit’s components visually.

Use copies of the Periodic General Maintenance Checklist

this man

in maintenance inspections. For assistance, contact Trane Product Support. Ensure your adherence to all safety statements while performing any type of maintenance.

General

Maintenance access to the condenser is through the removable fan assembly panel on top of the unit. Examine the areas around the air inlet and outlet grills, fans, motors and coils. Use a vacuum cleaner with a soft bristle brush to clean dirt from components.

Clean the coil of all debris that will inhibit airflow. This can

e done with a vacuum cleaner, soft brush and

b compressed air or a mild, neutral PH detergent may be used if needed. Chemical coil cleaners not specifically formulated for micro-channel coils are not recommended.

Check for bent or damaged coil fins and repair as

cessary. On

ne accumulate on or around the unit in the winter. Check all refrigerant lines and capillaries for vibration isolation and support as necessary. Check all refrigerant lines for signs of leaks.

ual (see Appendix A) to record periodic general

outdoor units, do not permit snow to

1. Examine all wiring for signs of chafing, loose nnections or other obvious damage (quarterly).

2. Examine brackets, motor mounts and hardware for

loose or

3. Clean accumulations of dust and dirt from all interior

Note: Fan motors have permanently sealed bear

missing parts or other damage (quarterly).

nd ex

terior surfaces (quarterly).

therefore, no lubrication is required.

ings,

Field Service

It may be necessary to perform repairs on the refrigeration system. If field repairs are necessary, the following procedures apply:

Note: Do not attempt to make repairs without the proper

tools.

Leak Detection

Several methods can be used to detect a leak in the refrigeration system. The most modern and easiest method is to use an electronic leak detector. Follow the manufacturer’s directions and any leak can be quickly located. A second method is to use soap bubbles. Apply a solution of soapy water with a brush or sponge to the joints and connections in the refrigerant lines. A leak in the lines will cause bubbles to form.

Leak Repair

When a leak is located, properly reclaim the remaining refrigerant charge before attempting repairs. Adjacent piping must be thoroughly cleaned by removing all paint, dirt and oily film. Use wire brush, sandcloth or sandpaper and wipe the area with clean, dry cloths. Protect nearby parts from heat damage by wrapping with water-soaked cloths

Refrigerant Piping

When replacing components within the cabinet, the following consumable materials are recommended: When brazing copper-to-copper connections (piping liquid line or suction line), use a phosphorus copper brazing alloy with 15% silver. General purpose silver brazing alloy with 45% silver is to be used for copper-to-brass or copper-to steel.

For liquid line repairs at the drier, strainer, sight glass, or

xpansion valve, use a 95% tin to 5% antimony solder with

e flux. When component replacement is complete, remove all traces of flux. After any repair, pressure check the system, checking for leaks prior to recharging the system.

Electrical System

All electrical connections should be checked to be sure that they are tight and properly made. Check all switches,

SS-SVX006C-EN 25

Page 26

Maintenance

contactors and wiring. Contactors should be examined and replaced if the contact pads are worn or pitted.

Troubleshooting

WARNING

Hazardous Service Procedures!

Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or serious injury.

Turn off all power to the uni troubleshooting procedures unless the procedure specifically requires the system to operate. For troubleshooting purposes, the system may be operated with the electric box open by using a pair of channel lock pliers to turn the shaft of the main power disconnect switch to the “On” position. When the switch is turned on, high voltage will be present inside the box. Exercise caution to prevent injury. Keep hands, clothing and tools clear of the electrical terminals and rotating components. Verify that your footing is stable.

t before conducting any

26 SS-SVX006C-EN

Page 27

Symptoms Probable Cause Recommendation

I ncor r ect ph asin g o r vo lt age

Cor r ect ph ase or vo lt age in p ut

Maintenance

Uni t Fail s t o Star t

Control i s Err a t ic Wir ing im p rop er ly co nne ct ed or brok en Check w ir i ng ag ain st sch em atic diagr am

Low con de nser airﬂ ow . ( In dicated b y excessiv e war m

Cond enser Head Pressu r e

Too High

Condense r Fan n ot

Operat ing

Cond enser Head Pressu r e

Too Lo w

Head Pressu r e Too Hig h

Err at ic Fan Oper at ion Dir ty o r b lock ed co nd en se r coil Cle an coi l or r em ov e bl ocka ge

Loss of r ef ri g

Low con de nser airﬂ ow . ( In dic

air leav i ng t h e cond en se r f an) .

Non - co ndensable g as o r a ir in t h e sy st em

Condense r f an co nt rols no t set pr op er ly Adjust or repair co nt r ol s

air leav i ng t h e cond en se r f an) .

Air or ot her no n- con d en sabl e gas in sy st em Reclaim sy stem an d r echar ge. I nst all a new dr ier st raine r.

Power f ai lur e

Over load prot ect ion t r ip p ed

Over ch ar g e of r ef r igeran t Reclai m excess r efrig er ant fr om sy st e m

Conde nser f an not oper at ing

er ant ( ind ica te d by b ubb les in s igh t g lass) Locat e a nd r ep ai r l ea k . Rechar ge sy st em

at ed by excessiv e war m

Over ch ar g e of r ef r igeran t Reclai m excess r efrig er ant fr om sy st e m

Conde nser f an not on

Che ck po we r sou rc e, po w er in pu t an d fu ses . Chec k con t ro l

Check p r essur e/ tem perat u r e operat ing sw it ches and

Open air pa ssages. Cl ean co il . Ch eck conde nser fan( s)

Check m ain v olt age po w er sour ce t o u nit .

Check f an m oto r, co nt r act or, fa n cycli ng sw it ch o r fa n

Check p r essur e/ tem perat u r e operat ing sw it ches and

Recla im sy st em , pu ll 500 -m icr on v acu u m and r ech arge .

Check m ain v olt age po w er sour ce t o u nit .

Check f an, cont acto r , f an cy cl in g sw it ch o r f an sp eed

cab le s an d co nne ct ion s.

m ot or. Repl ace as need ed .

spe ed con t r ol ler .

m ot or. Re

I n st all n ew dr ier / str ain er .

Check co ndenser fa n( s)

place if ne ed ed .

Ope n a ir pas sages

Clea n co il

con t r olle

Recommended Maintenance

Monthly

1. Check for filter cleanliness.

2. Inspect fan rotation.

3. Have the drain open.

4. Check for condensate pan safety free.

5. Clean coils and clear obstructions.

6. Check chilled water/hot water circuits fo required).

7. Ensure humidifier cylinder and controls operate properly

Semi-Annually

1. Ensure tighten electrical connections.

2. Check contacts on contactors for pitting.

3. Heat/Reheat operational.

4. Clean unit as necessary and clean

5. Clean condensate pump.

6. Inspect and clean CW screen.

and switch operates

r air (bleed as

coils.

Annually

1. Inspect chilled water system for leaks and corrosion.

2. Conduct a complete check of all services listed aboveand clean the interior of the units.

SS-SVX006C-EN 27

Page 28

Product Support

Product Support provides aftermarket technical and field support, warranty authorization and part sales to contractors and end users. Factory authorized services are available by request and include:

• Factory Authorized Start-up/Warranty Inspection

• Commissioning Assistance

• Break Fix Repair

• Preventive Maintenance Contracts

• Performance Evaluations

• Technician and Owner Training

Factory Authorized Start Up/ Warranty Inspection

Factory Authorized Start Up/Warranty Inspection ensures that your equipment is installed and operating per recommended guidelines. This essential service guarantees that equipment has the best warranty coverage available.

precision cooling equipment is covered by an industry

ading 24 Month Upgraded Parts Warranty and 90 Day

le Labor Warranty once Factory Authorized Warranty Inspection/Start-Up is performed and start up checklists are returned and validated by product support.

A Limited 12 Month Parts Only Author

ized Start Up/Warranty is not purchased and start up checklists are received from an unauthorized party and validated by product support.

Warranty applies if Factory

Technical Support

When calling to obtain support, it is important to have the following information readily available, (information is found on the unit’s nameplate):

•Unit Model Number

• Sales Order Number

• Item Number

• Unit Serial Number

• Description of Problem

Obtaining Warranty Parts

A support technician will provide troubleshooting assistance over the telephone.

If it can be determined that a part may be defective, a

ty authorization for a replacement part will be

warran processed by Technical Support. The replacement part will then be shipped via UPS ground. If the customer requests that warranty part(s) be sent by any other method than UPS ground, the customer is responsible for the shipping charges.

The purchase order must contain the following items:

• Purchase Order Number

•Date of Order

• Stated Part Price

• Customer Billing Address

• Shipping Address

• Customer’s Telephone and Fax Numbers

•Contact Name

• Unit Model No., Serial No. & Item No.

ipping cost incurred

The customer is responsible for the for returning the defective part(s). Return of defective part(s) must be within 30 days at which time an evaluation of the part(s) is conducted and if the part is found to have a manufacturing defect a credit will be issued.

When returning defective part(s) Material Authorization Tag and the address label provided with the replacement part. For prompt processing, please affix the RMA in a prominent place on the external packaging of the returned part.

, complete the

Return

Obtaining Spare/Replacement Parts

Maintaining a recommended spare parts inventory is an industry best practice for critical facilities. Onsite spares kits reduce downtime and can eliminate the cost of expedited freight charges.

28 SS-SVX006C-EN

Page 29

Appendix A

Installation Checklist

Table 11. Installation checklist

Y/N Tasks Comments

Prop er clearan ces f or serv ice access ha ve been m aint aine d arou nd equip ment .

Equipm ent is level and m o unt ing f ast en er s are tig ht .

efrig er

I f r equi r ed , pi pi n g co m p le t ed t o r

All f i el d inst al le d p ip ing le ak t est ed .

I f r equi r ed , r efrig er ant cha r ge ad de d.

Condensat e d r ai n l in e con nect ed w ith P-t rap an d i

I f r e

qu ire d, w a t er su p pl y li ne conn ect ed t o h u m i dif ie r (if req uir ed) .

I f m anu al cut - off v al ve is i nst al le d, open v alve .

Hum id ifi er On / Off/ Dr ain sw itch is i n t he on po sit io n.

Filt er( s) in st alled.

Duct pl en u m s sealed.

I n com ing line v o lt age m a t ch es equ ipm ent no m i nal n am epla t ed r at i ng ±

ler ances.

Main pow er wir ing con nect ions t o t he e quipm ent, incl udi ng ear th gr oun d, hav e been pr o per ly inst al led.

Cust om e r su ppl ied m a in p ow er cir cu it b r eak er ( HACR t y pe ) or f u ses hav e pr op er ra t in g s for e

All w irin g con n ect ions a re t ig h t .

I f r equi r ed , con t r ol wir ing con n ections com plet ed t o field m oun t ed sensor s.

Foreig n m at eria ls h ave been re m o ved f r om in si de an d around al l eq u ip m e nt in st alled ( ship pin g m ate rials, construct ion m ate rials, t ools, et c. ) .

I n spect all p ip ing con n ect ions f or l ea ks du r

qu ip m ent in st alled .

an t or coo la nt loop .

s f i ll ed wit h w at er.

in g ini t ial o per at ion.

SS-SVX006C-EN 29

Page 30

Page 31

Page 32

Trane - by Trane Technologies (NYSE: TT), a global climate innovator - creates comfortable, energy efficient indoor environments for commercial and residential applications. For more information, please visit trane.com or tranetechnologies.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

SS-SVX006C-EN 30 Dec฀2020฀

Supersedes SS-SVX006B-EN (Apr 2020)

Trane TR-SCS Installation And Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual