Trane Voyager WS 150-24, Voyager WS150, Voyager WS155, Voyager WS180, Voyager WS200 Installation, Operation And Maintenance Manual

...

Download

Page 1

Installation, Operation, and Maintenance

Packaged Rooftop Air Conditioners Voyager™

– Heat Pump

12½ – 20 Ton, 60/50 Hz

Model Numbers

WS*150-240

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and airconditioning 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 pr ecautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

May 20 14

SAFETY WARNING

RT-SVX33E-EN

Page 2

Warnings, Cautions and Notices

Warnings, Cautions and Notices. Note that warnings,

cautions and notices appear at appropriate intervals throughout this manual. Warnings are provide to alert installing contractors to potential hazards that could result in personal injury or death. Cautions are designed to alert personnel to hazardous situations that could result in personal injury, while not ices indicate a situation that may result in equipment or property-damage-only accidents.

Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

ATTENTION: Warnings, Cautions and Notices appear at

appropriate sections throughout this literature. Read these carefully:

WARNING

CAUTIONs

NOTICE:

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

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 af fect 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. T rane advocates the responsible handling of all refrigerants-including industry replacements for CFCs such as HCFCs and HFCs.

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. 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.

Personal Protective Equipment (PPE) Required!

Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards.

• Before installing/servi cin g th is un it, technicians MUST put on all PPE required for the work being undertaken (Examples; cut r esistant glov es/sleev es, butyl gloves, safety glasses, hard hat/bump cap, fall protection, electrical PPE and arc flash clothing). ALWAYS refer to appropriate Material Safety Data Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA guidelines for proper PPE.

• When workin g with or around hazardous c hemicals, ALWAYS refer to the appropriate MSDS/SDS and OSHA/GHS (Global Harmonized System of Classification and Labelling of Chemicals) guidelines for information on allowable personal exposure levels, proper respiratory protection and handling instructions.

• If there is a risk of ener gized electrical contact, ar c, or flash, technicians MUS T 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.

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

Proper Field Wiring and Grounding Required!

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

WARNING

Page 3

Overview of Manual

Note: One copy of this document ships inside the control

panel of each unit and is customer property . It must be retained by the unit’s maintenance personnel.

This booklet describes proper installation, operation, and maintenance procedures for air cooled systems.

By carefully reviewing the information within this manual and following the instructions, the risk of improper operation and/or component dama ge will be minimized.

It is important that periodic maintenance be performed to help assure trouble free operation. A maintenance schedule is provided at the end of this manual.

Should equipment failure occur, contact a qualified service organization with qualified, experienced HVAC technicians to properly diagnose and repair this equipment.

Revision Summary

RT-SVX33E-EN (27 May 2014)

• New Low Leak Economizer & Fault Detection Diagnostics (FDD) Options

• Updated Model Number Description Section

• Added back Warranty Section

Warnings, Cautions and Notices

RT-SVX33E-EN 3

Page 4

Table of Contents

Model Number Description . . . . . . . . . . . . . . . 5

General Information . . . . . . . . . . . . . . . . . . . . . 7

Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . 7

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . 7

Unit Description . . . . . . . . . . . . . . . . . . . . . . . 7

ReliaTel™ Control . . . . . . . . . . . . . . . . . . . . . 8

System Input Devices & Functions . . . . . . . 8

Zone Sensors . . . . . . . . . . . . . . . . . . . . . . . . 10

Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 11

Unit Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Factory-Mounted Unit Options . . . . . . . . . . . 26

Circuit Breaker (FIYUCB) & Unit Disconnect (FIYUDC)

Powered/Unpowered Convenience Outlet 27

Return Air Smoke Detector . . . . . . . . . . . . . 28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Pre-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 38

ReliaTel Controls . . . . . . . . . . . . . . . . . . . . . 38

System Status Checkout Procedure . . . . . 38

Resetting Cooling and Heating Lockouts . 39 Zone Temperature Sensor (ZTS) Service Indi-

cator

Clogged Filter Switch . . . . . . . . . . . . . . . . . 40

Fan Failure Switch . . . . . . . . . . . . . . . . . . . . 40

Condensate Overflow Switch . . . . . . . . . . . 40

Zone Temperature Sensor (ZTS) Tests . . 40 Programmable & Digital Zone Sensor Test 41

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . 43

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Heat Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4 RT-SVX33E-EN

Page 5

Model Number Description

WSD 150 E 3 R G B **

123 456 7 8 9 10 11 1213

Digit 1 — Unit Type

W = Packaged Cooling, Electric Heat

Digit 2 — Efficiency

S = Standard Efficiency

Digit 3 — Airflow Configuration

D=Downflow H=Horizontal

Digit 4, 5, 6 — Nominal Gross Cooling Capacity (MBh)

150 = 12½ Tons, 60Hz 155 = 15 Tons, 50Hz 180 = 15 Tons, 60Hz 200= 20 Ton, 50Hz 240 = 20 Tons, 60Hz

Digit 7 — Major Design Sequence

E = R-410A Refrigerant

Digit 8 — Voltage Selection

3 = 208-230/60/3 4 = 460/60/3 W = 575/60/3 T = 200/50/1 D = 380-415/50/3

Digit 9 — Unit Controls

R = Reliatel

Digit 10 — Heating Capacity

Note: (Applicable to Digit 1 W models

only)

0 = No Heat G = 18 kW Electric Heat N = 36 kW Electric Heat P = 54 kW Electric Heat R = 72 kW Electric Heat

Digit 11 — Minor Design Sequence

Digit 12, 13 — Service Sequence Digit 14 — Fresh Air Selection

0=No Fresh Air D = Econ Dry Bulb w/ Barometric

F = Econ Reference Enthaply w/ H = Econ Comparative Enthaply w/ K = Low Leak Econ w/ Barometric M = Low Leak Econ Reference P = Low Leak Econ Comparative

Relief Barometric Relief Barometric Relief

Relief Enthalpy w/ Barometric Relief Enthalpy w/ Barometric Relief

Digit 15 — Supply Fan/Drive Type/Motor

0=Standard Motor 1 = Oversized Motor 3 = High Efficiency Motor 6 = Single Zone Variable Air Volume

Standard Motor 7 = Multi-Speed Standard Motor 8 = Single Zone Variable Air Volume

Oversized Motor 9 = Multi-Speed Oversized Motor A = Single Zone Variable Air Volume

Standard Motor w/ Shaft Ground

Ring B = Multi-Speed Standard Motor w/

Shaft Ground Ring C = Single Zone Variable Air Volume

Oversized Motor w/ Shaft Ground

Ring D = Multi-Speed Oversized Motor w/

Shaft Ground Ring

Digit 16 — Hinged Service Access / Filters

0 = Standard Panels/Standard A = Hinged Access/Standard Filters

B = Standard Panels / 2" MERV 8 C = Hinged Access / 2" MERV 8 D = Standard Panels / MERV 13 E = Hinged Access / MERV 13 Filters

Filters

Digit 17 — Condenser Coil Protection

0 = Standard Coil 1 = Standard Coil With Hail Guard 2 = Black Epoxy Pre-Coated Coil 3 = Black Epoxy Pre-Coated Coil with

Hail Guard

Digit 18 — Through The Base Provisions

0 = No Through The Base Provisions A = Through The Base Electric D = Through The Base Utilities Access

Digit 19 — Disconnect Switch/ Circuit Breaker

0 = No Disconnect/circuit break 1 = Unit Mounted Non-Fused

Disconnect Switch 2 = Unit Mounted Circuit Breaker

Digit 20 — Convenience Outlet Option

0 = Without Convenience Outlet A = Unpowered Convenience Outlet B = Powered Convenience Outlet

Digit 21 — Communications Options

0 = Without Communications 1 = Trane Communications 2 = Lontalk Communications 6 = Building Automation Control

Options Interface Interface Network Communications

Interface

Digit 22 — Refrigeration System Option

0 = Standard refrigeration system

Digit 23 — Refrigeration Controls

0 = Without Refrigeration Controls 1=Frostat

Digit 24 — Smoke Detector7,

0 = Without Smoke Detector A = Return Air Smoke Detector B = Supply Air Smoke Detector C = Return/Supply Air Smoke

D = Plenum Smoke Detector

Detector

Digit 25 — System Monitoring Controls

0 = No Monitoring Controls 1 = Clogged Filter Switch

2 = Fan Failure Switch 3 = Discharge Air Sensing 4 = Clogged Filter Switch and Fan

5 = Clogged Switch and Discharge Air 6 = Fan Failure Switch and Discharge 7 = Clogged Filter Switch, Fan Failure A = Condensate Drain Pan Overflow B = Clogged Filter Switch and

C = Fan Failure Switch and

D = Discharge Air Sensing and

E = Clogged Filter Switch, Fan Failure

F = Clogged Filter Switch, Discharge

G = Fan Failure Switch, Discharge Air

Failure Sensing Air Sensing Switch and Discharge Air Sensing Switch Condensate Drain Pan Overflow

Switch Condensate Drain Pan Overflow

Switch Switch and Condensate Drain Pan

Overflow Switch Air Sensing Tube and Condensate

Drain Pan Overflow Switch Sensing Tube and Condensate

Drain Pan Overflow Switch

RT-SVX33E-EN 5

Page 6

Model Number Description

H = Clogged Filter Switch, Fan Failure

Switch, Discharge Air Sensing and Condensate Drain Pan Overflow Switch

Digit 26 - System Monitoring Controls

0 = No Monitoring Controls A = Demand Control Ventilation

B = FDD (Fault Detection and C = FDD (Fault Detection Diagnostics)

(CO

)

Diagnostics) & Demand Control Ventilation

(CO

)

Digit 27 - Unit Hardware Enhancements

0 = No Enhancements 1 = Stainless Steel Drain Pan

Digit 28 - Short Circuit Current Rating

0 = Standard SCCR A = 65kA SCCR Option

11, 12

Digit 31 - Advanced Unit Controls

0 = Standard Unit Controls 1=Human Interface

Note: Most Factory Installed Options

available for Downflow Air Discharge units only. Please verify with ordering system for availability.

Model Number Notes

1. Some field set up required.

2. Available factory installed on downflow AND horizontal units. Verify with ordering system.

3. Through-the-base electrical option or Horizontal-Side Access must be ordered with either unit mounted disconnect or circuit breaker.

4. Unit mounted disconnect and circuit breakers are mutually exclusive of each other.

5. Must be ordered with Throughthe-Base Electrical option or Horizontal-Side Access and either Unit Mounted Disconnect or Circuit Breaker.

6. ReliaTel Options Module is required when ordering the following accessories: Clogged Filter Switch, Fan Fail Switch,

Condensate Overflow Switch, Discharge Air Se nsing Kit, Frostat, V enti latio n Override, Smoke Detector, Dehumidification and Modulating Gas Heat Furnace.

7. Requires ReliaT el Options Module.

8. Option cannot be ordered in conjunction with field installed economizer on downflow units. Must be factory installed. The return air smoke detector may not fit up or work properly on the Voyager units when used in

conjunction with 3

party accessories (such as bolt on heat wheels, economizers, and power exhaust). Do not order the return air smoke detectors when using this type of accessory.

9. Supply and/or return smoke detector may not be used with the plenum smoke detector.

10. Demand Control Ventilation Option includes wiring only. The

sensor is a field-installed only

option.

11. Only available where MOP is above 60A.

12. 575 VAC option is 25kA.

13. Standard filters are not available with Low Leak Economizers.

14. Human Interface is standard with FDD (Fault Detection Diagnostics).

6 RT-SVX33E-EN

Page 7

General Information

Unit Inspection

As soon as the unit arrives at the job site:

• V erify that the nameplate data matches the data on the sales order and bill of lading (includin g electrical data).

• Verify that the power supply complies with the unit nameplate specifications.

• Visually inspect the exterior of the unit, including the roof, for signs of shipping damage.

• Visually inspect the internal components for shipping damage as soon as possible after delivery and before it is stored. Do not walk on the sheet metal base pans.

• If concealed damage is discovered, notify th e carrier’s terminal of damage immediately by phone and by mail. Concealed damage must be reported within 15 days.

Request an immediate joint inspection of the damage by the carrier and the consignee. Do not remove damaged material from the receiving location. Take photos of the damage, if possible. The owner must provide reasonable evidence that the damage did not occur after delivery.

• Notify the appropriate sales representative before installing or repairing a damaged unit .

WARNING

Fiberglass Wool!

Product contains fiberglass wool. Disturbing the insulation in this product during installation, maintenance or rep air will expose you to airborne particles of glass wool fibers and ceramic fibers known to the state of California to cause cancer through inhalation. You MUST wear all necessary Personal Protective Equipment (PPE) including gloves, eye protection, mask, long sleeves and pants when working with products containing fiberglass wool. Exposition to glass wool fibers without all necessary PPE equipment could result in cancer, respiratory, skin or eye irritation, which could result in death or serious injury.

Precautionary Measures

• Avoid breathing fibergl as s dust.

• Use a NIOSH approved dust/mist respirator.

• Avoid contact with the skin or eyes. W ear long-sleeved, loose-fitting clothing, gloves, and eye protection.

• Wash clothes separately from other clothing: rinse washer thoroughly.

• Operations such as sawing, blowing, tear-out, and spraying may generate fiber concentrations requiring additional respiratory protection. Use the appropriate NIOSH approved respiration in these situations.

First Aid Measures

• Eye Contact - Flush eyes with water to remove dust. If symptoms persist, seek medical attention.

• Skin Contact - Wash affected areas gently with soap and warm water after handling.

Storage

Take precautions to prevent condensate from forming inside the unit’s electrical compartments and motors if:

15. The unit is stored before it is installed; or,

16. The unit is set on the roof curb, and temporary heat is provided in the building. Isolat e al l side p anel servi ce entrances and base pan openings (e.g., conduit holes, S/A and R/A openings, and flue openings) from the ambient air until the unit is ready for start-up.

Note: Do not use the unit’s heater for temporary heat

without first completing the start-up procedure detailed under “Start Up,” p. 33.

The manufacturer will not assume any responsibility for equipment damage resulting from condensate accumulation on the unit’s electrical and/or mechanical components.

Unit Clearances

Figure 1, p. 11 illustrates the minimum operatin g and

service clearances for either a single or multiple unit installation. These clearances are th e minimum distances necessary to assure adequate serviceability, cataloged unit capacity, an d peak operating efficiency.

Providing less than the recommended clearances may result in condenser coil starvation, “short-circuiting” of exhaust and economizer airflows, or recirculation of hot condenser air.

Unit Description

Before shipment, each unit is leak tested , dehydrated, charged with re fr igerant and compressor oil, and run tested for proper control operation.

The condenser coils are aluminum fin, mechanically bonded to copper tubing.

Direct-drive, vertical discharge condenser fans are provided with built-in thermal overload protection.

The ReliaT el™ Control Modu le is a microelectronic control system that is referred to as “Refrigeration Module” (RTRM). The acronym RTRM is used extensively throughout this document when referring to the control system network.

This module through Proportional/Integral control algorithms perform specific unit functions that governs unit operation in response to; zone temperature, supp ly air

RT-SVX33E-EN 7

Page 8

General Information

temperature, and/or humidity conditions depending on the application. The stages of capacity control for these units are achieved by starting and stopping the compressors.

The RTRM is mounted in the control panel and is factory wired to the respective internal components. The RTRM receives and interprets information from other unit modules, sensors, remote panels, and customer binary contacts to satisfy the applicable request for cooling.

ReliaTel™ Control

Economizer Control Actuator

The ECA monitors the mixed air temperature, return air temperature, minimum position setpoint (local or remote), power exhaust setpoint, CO2 setpoint, CO2, and ambient dry bulb/enthalpy sensor or comparative humidity (return air humidity against ambient humidity) sensors, if selected, to control dampers to an accuracy of +/- 5% of stroke. The actuator is spring returned to the closed position any time that power is lost to the unit. It is capable of delivering up to 25 inch pounds of torque and is powered by 24 Vac.

RTCI – ReliaTel™ Trane Communication Interface (Optional)

This module is used when the application calls for an ICS™ building management type control system. It allows the control and monitoring of the system through an ICS panel. The module can be ordered from the factory or ordered as a kit to be field installed. Follow the installation instruction that ships with each kit when field installation is necessary.

RLCI – ReliaTel™ LonTalk Communication Interface (Optional)

This module is used when the application calls for an ICS™ building management type control system that is LonT alk. It allows the control and monitoring of the system through an ICS panel. The module can be ordered from the factory or ordered as a kit to be field installed. Follow the installation instruction that ships with each kit when field installation is necessary.

System Input Devices & Functions

The RTRM must have a zone sensor or thermostat input in order to operate the unit. The flexibility of having several mode capabilities depends upon the type of zone sen sor or thermostat selected to interface with the RTRM.

The descriptions of the following basic Input Devices used within the RTRM network are to acquaint the operator with their function as they interface with the various modules. Refer to the unit’s electrical schematics for the specific module connections.

The following Controls are Available from the Factory for Field Installation:

Supply Fan Failure Input (Optional)

The Fan Failure Switch can be connected to sense indoor fan operation:

FFS (Fan Failure Switch) If air flow through the unit is not proven by the differential pressure switc h connected to the RTOM (factory set point 0.07 “ w.c.) within 40 seconds nominally, the RTRM will shut off all mechanical operations, lock the system out, send a diagnostic to ICS, and the SERVICE output wi ll flash. The system will remain locked out until a reset is initiated either manually or through ICS.

Drain Pan Condensate Overflow Switch (Optional)

This input incorporates the Condensate Overflow Switch (COF) mounted on the drain pan and the ReliaTel Options Module (RTOM). When the condensate level reaches the trip point for 6 continuous seconds, the RTOM will shut down all unit function until the overflow condi t ion has cleared. The unit will return to normal operation after 6 continuous seconds with the COF in a non-tripped condition. If the condensate level causes the unit to shutdown more than 2 times in a 3 day period, th e unit will be locked-out of operation. A manual reset of the diagnostic system through the Zone Sensor or Building Automation System (BAS) will be required. Cycling unit power will also clear the fault."

RTOM – ReliaTel™ Options Module (Optional)

The RTOM monitors the supply fan proving, clogged filter, supply air temperature, exhaust fan setpoint, supply air tempering, Frostat™ and smoke detector. R efer to system input devices and functions for operation.

8 RT-SVX33E-EN

Clogged Filter Switch (Optional)

The unit mounted clogged filter switch monitors the pressure differential across the return air filters. It is mounted in the filter section and is connected to the RTOM. A diagnostic SERVICE signal is sent to the remote panel if the pressure differential across the filters is at least

0.5" w.c. The contacts will automatically open when the

pressure differential across the filters decreases to approximately 0.4" w.c. The clogged filter output is energized when the supply fan is operating and the clogged filter switch has been closed for at least 2 minutes.

Page 9

General Information

The system will continue to operate regardless of the status of the filter switch.

Please note that on units equipped with factory installed MERV 13 filters, a clogged filter switch with different pressure settings will be installed. This switch will close when the differential pressure is approximately 0.8' w.c. and open when the differential falls to 0.7" w.c.

Compressor Disable (CPR1/2)

This input incorporates the low pressure control (LPC) of each refrigeration circuit and can be activated by opening a field supplied contact installed on the LTB.

If this circuit is open before the compressor is started, the compressor will not be allowed to operate. Anytime this circuit is opened for 1 continuous second during compressor operation, the compressor for that circuit is immediately turned “Off”. The compressor will not be allowed to restart for a minimum of 3 minutes should the contacts close.

If four consecutive open conditions occur during the first three minutes of operation, the compressor for that circuit will be locked out, a diagnostic communicated to the remote panel (if installed), and a manual reset will be required to restart the compressor.

Low Pressure Control

ReliaTel Control

When the LPC is opened for 1 continuous second, the compressor for that circuit is turned off immediately . The compressor will not be allowed to restart for a minimum of 3 minutes.

If four consecutive open conditions occur during the first three minutes of operation, the compressor will be locked out, a diagnostic communicated to ICS™ if applicab le, and a manual reset will be required to restart the compressor.

High Pressure Control (Optional)

ReliaTel Control

The high pressure controls are wired in series between the compressor outputs on the RTRM and the compress or contactor coils. If the high pressure control switc h opens, the RTRM senses a lack of current while calling for cooling and locks the compressor out.

On dual circuit units, if the high pressure control opens, the compressor on the affected circuit is locked out. A manual reset for the affected circuit is required.

Power Exhaust Control (Optional)

The power exhaust fan is started whenever the position of the economizer dampers meets or exceed the power exhaust setpoint when the indoor fan is on.

The setpoint panel is located in the return air section and is factory set at 25%.

Lead/Lag Control (Dual Circuit Only)

Lead/Lag is a selectable input located on the RTRM. The RTRM is configured from the factory with the Lead/Lag control disabled. T o activate the Lead/Lag function, simply cut the wire connected to J3-8 at the RTRM. When it is activated, each time the designated lead compressor is shut off due to the load being satisfied, the lead compressor or refrigeration circuit switches. When the RTRM is powered up, i.e. af ter a power failure, the control will default to the number one circuit compressor.

Evaporator Frost Control

This input incorporates the Frostat™ control (FOS) mounted in the indoor coil and can be activated by closing a field supplied contact installed in parallel with the FOS.

If this circuit is closed before the compressor is started, t he compressor will not be allowed to operate. Anytime this circuit is closed for 1 continuous second during compressor operation, the compressor for that circuit is immediately turned “Off”. The compressor will not be allowed to restart for a minimum of 3 minutes should the FOS open.

Smoke Detector Sensor (Optional)

This sensor is only applicable on units equipped with a RTOM. It provides high limit “shutdown” of the unit and requires a manual reset. The sensor is used to detect smoke due to fire in the air conditioning or ventilation ducts.

The supply and return air smoke detectors are designed to shut off the unit if smoke is sensed in the supply air stream or return air stream. This function is performed by sampling the airflow entering the unit at the return air opening. Follow the instructions pro vided below to assure that the airflow through the unit is sufficient for adequate sampling. Failure to follo w these instructions will prevent the smoke detectors from performing it's design function.

Important: Airflow through the unit is affected by the

amount of dirt and debris accumulated on the indoor coil and filters. To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector, complete adherence to the maintenance procedures, including recommended intervals between filter changes, and coil cleaning is required.

Periodic checks and maintenance procedures must b e performed on the smoke detector to insure that it will function properly . For detailed instructions concerning these checks and procedures, refer to the appropriate section(s) of the smoke detector Installation and Maintenance Instructions provided with the literature package for this unit.

In order for the supply air smoke detector or return air smoke detector to properly sense smoke in the supply air

RT-SVX33E-EN 9

Page 10

General Information

stream or return air stream, the air velocity entering the smoke detector unit must be between 500 and 4000 feet per minute. Equipment covered in this manual will develop an airflow velocity that falls within these limits over the entire airflow range specified in the evaporator fan performance tables.

Zone Sensors

Note: Zone sensor required for units configured for

Single Zone VAV indoor fan system control to enable Single Zone VAV functionality.

Zone Sensor Module (ZSM) (BAYSENS107*)

This electronic sensor features three system switch settings (Heat, Cool, and Off) and two fan settings (On and Auto). It is a manual changeover control with single setpoint. (Cooling Setpoint Only)

Zone Sensor (BAYSENS109*)

This electronic sensor features four system switch settings (Heat, Cool, Auto, and Off) and two fan settings (On and Auto) with four system status LED’ s. It is a manual or auto changeover contro l with dual setpoint capability . It can be used with a remote zone temperature sensor BAYSENS075*.

involved. Refer to the unit’s wiring diagrams for proper connections.

Remote Zone Sensor (BAYSENS075*)

This electronic sensor can be used with BAYSENS106*, 108*, 110*, 109* Remote P anels. When this sensor is wired to a BA YSENS1 09* Remote Panel, wiri ng must be 18 A WG Shielded Twisted P air (Belden 8760 or equivalent). Refer to the specific Remote Panel for wiring details.

Wireless Zone Sensor (BAYSENS050)

This electronic sensor features five system settings (Auto, Off, Cool, Heat, and Emerg ency Heat) and with On and Auto fan settings. It is a manual or auto c hangeover control with dual setpoint capability. Other features include a timed override function, lockable system settings, and Fahrenheit or Celsius temperature display. Included with the wireless zone sensor will be a receiver that is to be mounted inside the unit, a mounting bracket, and a wire harness.

Thermostat (BAYSTAT150)

This thermostat is a multi-stage 3 heat/2 cool, autochangeover digital display thermostat. It is a programmable thermostat, and a 7-day programmable stat with night setback shall be available. In addition, it is wall mounted.

Programmable Zone Sensor (BAYSENS119*)

Programmable Night Setback: Auto or manual c hangeover with seven-day programming. Keyboard selection of Heat, Cool, Fan, Auto, or On. All programmable sensors have System On, Heat, Cool, Service LED/indi cato rs as standard. Night Setback Sensors have one (1) Occupied, one (1) Un-occupied, and one (1) Override program per day.

Remote Zone Sensor (BAYSENS073*)

This electronic sensor features remote zone sensing and timed override with over ride cancellation. It is used with a Trane Integrated Comfort™ building management system.

Remote Zone Sensor (BAYSENS074*)

This electronic sensor features single setpoint capability and timed override with override cancellation. It is used with a Trane Integrated Comfort™ building management system.

Remote Zone Sensor (BAYSENS016*)

This bullet type temperature sensor can be used for; outside air (ambient) sensing, return air temperature sensing, supply air temperature sensing, remote temperature sensing (uncovered). Wiring procedures vary according to the particular application and equipment

Thermostat (BAYSTAT151)

This thermostat is a single-stage 1 heat/1 cool, autochangeo v er digital disp lay therm ostat. It is a nonprogrammable, wall-mounted thermostat.

Thermostat (BAYSTAT155)

This thermostat is a multi-stage 3 heat/2 cool, auto changeo v er digital disp lay therm ostat. It is a nonprogrammable, wall-mounted thermostat, and it can be used for Economizer Operation.

Human Interface - 5 Inch Color Touchscreen (Optional)

The 5 inch Color T ouc hscreen Human Interface provides an intuitive user interface to the rooftop unit that speeds up unit commissioning, shortens unit troubleshooting times, and enhances preventative maintenance measures. The human interface includes several features including:

• Data trending capabilities by means of time seri es graphs

• Historical alarm messages

• Real-time sensor measurements

• On board system setpoints

• USB port that enables the downloading of component runtime information as well as trended historical sensor data

• Customized reports

10 RT-SVX33E-EN

Page 11

Unit Dimensions

WITHOUT ECONOMIZER

5' 8" WITH ECONOMIZER

5' 0"

Figure 1. Typical installation clearances for single & multiple unit applications

RT-SVX33E-EN 11

Page 12

Unit Dimensions

DOWNFLOW CONDENSATE DRAIN CONN 1" (25.4MM) NPT

121 11/16"

6 7/16"

84 3/16"

33 3/16"

8 15/16"

2 11/16"

56"

48 1/2"

6 13/16"

122 5/16"

85 5/16"

54"

13/16"

SINGLE POINT POWER ENTRY

3" (76MM) DIA HOLE (UNIT POWER WIRE)

7/8" (22.23MM) DIA. HOLE (UNIT CONTROL

WIRE)

FILTER ACCESS DOOR HORIZONTAL

SERVICE GAUGE PORT ACCESS

2167MM

3107MM

20MM

1372MM

2154MM

25.4MM

1231.90MM

173MM

3091MM

1422MM

163.51MM

843MM

227MM

68.26MM

Figure 2. Heat pump models - 12½ - 15 tons

* All dimensions are in inches/millimeters.

Figure 3. Heat pump models - 12½ - 15 tons

* All dimensions are in inches/millimeters.

12 RT-SVX33E-EN

Page 13

Unit Dimensions

1”

25.4 MM CURB FLANGE LONG SIDES

SHORT SIDES

Figure 4. Heat pump models - 12½ - 15 tons

* All dimensions are in inches/millimeters.

Figure 6. Heat pump models - 12½ - 15 tons

Figure 5. Heat pump models - 12½ - 15 tons

* Duct flanges mount 7-7/16" down inside the curb on the 1-1½ curb flanges. Roofcurb is intended for downflow use only. * All dimensions are in inches/millimeters.

* All dimensions are in inches/millimeters.

RT-SVX33E-EN 13

Page 14

Unit Dimensions

DOWNFLOW CONDENSATE DRAIN CONN 1" (25.4MM) NPT

121 11/16"

6 7/16"

84 3/16"

33 3/16"

8 15/16"

2 11/16"

56"

48 1/2"

6 13/16"

122 5/16"

85 5/16"

64 1/8"

13/16"

SINGLE POINT POWER ENTRY

3" (76MM) DIA HOLE (UNIT POWER WIRE)

7/8" (22.23MM) DIA. HOLE (UNIT CONTROL

WIRE)

FILTER ACCESS DOOR HORIZONTAL

SERVICE GAUGE PORT ACCESS

2167MM

3107MM

20MM

1629MM

2154MM

25.4MM

1231.90MM

173MM

3091MM

1422MM

163.51MM

843MM

227MM

68.26MM

Figure 7. Heat pump models - 20 tons

* All dimensions are in inches/millimeters.

Figure 8. Heat pump models - 20 tons

* All dimensions are in inches/millimeters.

14 RT-SVX33E-EN

Page 15

Figure 9. Heat pump models - 20 tons

1”

25.4 MM CURB FLANGE LONG SIDES

SHORT SIDES

* All dimensions are in inches/millimeters.

Unit Dimensions

Figure 10. Heat pump models - 20 tons

* Duct flanges mount 7-7/16" down inside the curb on the 1-1½ curb flanges. Roofcurb is intended for downflow use only.

* All dimensions are in inches/millimeters.

Figure 11. Heat pump models - 20 tons

* All dimensions are in inches/millimeters.

RT-SVX33E-EN 15

Page 16

Unit Dimensions

Figure 12. Downflow & horizontal condensate locations

Table 1. Unit dimensi ons

Condensate Drain Location

Downflow Only Downflow Horizontal

Tons

ABCDFGH EJEK

12½, 15, 20 26 7/16 28 3/4 19 15/16 4 1/4 4 1/4 76 5/16 68 11/16 1 NPT - 26 3/4 - 5 3/8

Condensate

Drain Size

Figure 13. Through the base utility locations and access panel swing clearances

ELECTRICAL UTILITY LOCATIONS AND ACCESS PANEL SWING CLEARANCES.

SWING RADIUS (E)

HORIZONTAL FILTER

ACCESS PANEL

SWING RADIUS (A)

ID SECTION

ACCESS PANEL

SWING RADIUS (D)

ID FAN SECTION

ACCESS PANEL

TOP VIEW SHOWING THROUGH THE BASE

6 7/8"

THROUGH THE BASE ELECTRICAL

SWING RADIUS (C) OD SECTION ACCESS PANEL

Table 2. Swing clearances

Unit Model # A B C D E

WSD150-180 42 3/8 48 3/8 31 N/A N/A

WSD240 29 1/2 56 38 1/2 18 1/2 N/A

WSH150-180 42 3/8 N/A 31 N/A 12

WSH240 29 1/2 N/A 38 1/2 18 1/2 14

Note: All dimensions are in inches.

16 RT-SVX33E-EN

Page 17

Unit Weights

Table 3. Typical unit weights and point loading data

Corner Weights

(lbs.)

Unit

Description

WS*150 1978 633 514 376 455 56 36 WS*155 1982 634 515 377 456 56 36 WS*180 1982 634 515 377 456 56 36 WS*200 2107 674 485 400 590 57 35 WS*240 2107 674 485 400 590 57 35

Note: Corner weights are given for information only. Unit is to be supported

continuously by a curb or equivalent frame support.

Net

Weight A B C D Length Width

Center of

Gravity (in.)

Rigging

Refer to Figure 14 and Table 3 for typical unit operating weights rigging before proceeding.

WARNING

Heavy Objects!

Ensure that all the lifting equipment used is properly 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. Other lifting arrangements could cause equipment or property damage. Failure to follow instructions above or properly lift unit could result in unit dropping and possibly crushing operator/ technician which could result in death or serious injury.

4. Test-lift the unit to ensure it is properly rigged and balanced, make any necessary rigging adjustments.

5. Lift the unit and position it into place.

6. Downflow units; align the base rail of the unit with the curb rail while lowering the unit onto the curb. Make sure that the gasket on the curb is not damaged while positioning the unit.

Figure 14. Rigging and center of gravity data

WARNING

Improper Unit Lift!

Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level. Failure to properly lift unit could result in unit dropping and possibly crushing operator/technician which coul d result in death or serious injury and possible equipment or property-only damage.

1. Remove the shipping crate from around the unit. Do not remove the crating from the top of the unit.

2. Rig the unit as shown in Figure 14. Atta ch adequate strength lifting slings to all four lifting brackets in the unit base rail. Do not use cables, chains, or slings except as shown.

3. Install a lifting bar, as shown in Figure 14, to protect the unit and to facilitate a uniform lift. The minimum distance between the lifting hook and the top of the unit should be 7 feet.

RT-SVX33E-EN 17

Page 18

Installation

Foundation

NOTICE:

Water Damage!

Non-factory penetrations through the base of this unit are not allowed. Any penetration in the base of the unit may aff ect the water tight integrity of the unit and lead to water leaks in to the conditioned space. Failure to follow instructions could result in equipment and property damage.

Notes:

• For units with optional Condensate Overflow Switch

(COF), the switch will not work properly if unit is not level or slightly sloped toward switch.

• T o assure proper condensate flow during operation the unit and the curb must be level.

If the unit is installed at ground level, elevate it above the snow line. Provide concrete footings at each support location with a “full perimeter” support structure or a slab foundation for support. Refer to Table 3, p. 17 for the unit’ s operating and point loading weights when constructing a footing foundation.

If anchoring is required, anchor the unit to the slab using hold down bolts or isolators. Isolators should be installed to minimize the transmission of vibrations into the building.

For rooftop applications, ens ure the roof is strong enough to support the combined unit and support structural weight.

WARNING

Risk of Roof Collapsing!

Confirm with a structural engineer that the roof structure is strong enough to support the combined weight of the roofcurb and the unit. Refer to Table 3,

p. 17 for typical unit and curb weights. Failur e t o ensur e

proper structural roof support could cause the roof to collapse, which could result in death or serious injury and property damage.

If anchoring is required, anchor the unit to the roof with hold-down bolts or isolators.

Check with a roofing contract or for proper w aterp roofing procedures.

Ductwork

Elbows with turning vanes or splitters are recommended to minimize air noise due to turbulence and to reduce static pressure.

When attac hing the ductwork to the unit, provide a w atertight flexible connector at the unit to prevent operating sounds from transmitting through the ductwork.

All outdoor ductwork between the unit and the structure should be weather proofed after installation is completed.

Note: For sound consideration, cut only the holes in the

roof deck for the ductwork penetrations. Do not cut out the entire roof deck within the curb perimeter.

If a Curb Accessory Kit is Not Used:

1. The ductwork can be attached directly to the factoryprovided flanges around the unit’s supply and return air openings. Be sure to use flexible duct connections at the unit.

2. For “built-up” curbs supplied by others, gaskets must be installed around the curb perimeter flange and the supply and return air opening flanges.

General Unit Requirements

The checklist listed below is a summary of the steps required to successfully install a commercial unit. This checklist is intended to acquaint the installing personnel with what is required in the installation process. It does not replace the detailed instructions called out in the applicable sections of this manual.

• Check the unit for shipping damage and material shortage; file a freight claim and notify appropriate sales representative.

• Verify correct model, options and voltage from nameplate.

• Verify that the installation location of the unit will provide the required clearance for proper operation.

• Assemble and install the roof curb (if applicable). Refer to the latest edition of the curb installers guide that ships with each curb kit.

• Fabricate and install ductwork; secure ductwork to curb.

• Rigging the unit.

• Set the unit onto the curb; check for levelness.

• Ensure unit-to-curb seal is tight and without buckles or cracks.

• Install and connect a condensate drain line to the evaporator drain connection.

Factory Installed Economizer

• Ensure the standard economizer has been pulled out into the operating position. Refer to the economizer Installation Instructions for proper setup.

Note: Low Leak Economizers do not pull out. R efer to Low

Leak Economizers Installation Instructions for proper setup.

• Install all access panels.

18 RT-SVX33E-EN

Page 19

Installation

Electric Heat Requirements

• V erify that the power supply complies with the electric heater specifications on the unit and heater nameplate.

• Inspect the heater junction box and control panel; tighten any loose connections.

• Check electric heat circuits for continuity.

Condensate Drain Configuration

An evaporator condensate drain connection is provided on each unit. Refer to “Unit Dimensions,” p. 11 for the appropriate drain location.

A condensate trap must be installed at the unit due to the drain connection being on the “negative pressure” side of the fan. Install the P -T rap using the guid elines in Figure 15,

p. 19.

A condensate drain line must be connected to the P-Trap. Pitch the drain lines at least 1/2 inch for every 10 feet of horizontal run to assure proper condensate flow. Do not allow the horizontal run to sag causing a possible doubletrap condition which cou ld result in cond en sate backup due to “air lock”.

Figure 15. Condensate trap installation

Electrical Requirements

WARNING

Proper Field Wiring and Grounding Required!

Main Electrical Power Requirements

• Verify that the power supply complies with the unit nameplate specifications.

• Inspect all control panel components; tighten any loose connections.

• Connect properly sized and protected power supply wiring to a field-supplied/installed disconnect switch and to the main power terminal block (HTB1) in the unit control panel.

• Install proper grounding wires to an earth ground.

Note: All field-installed wiring must comply with NEC

and applicable local codes.

Filter Installation

Each unit ships with 2 in ch filters installed. The quantity of filters is determined by unit size. Access to the filters is obtained by removing the indoor fan access panel. If included, filters are removed by pulling the filter remo val tool.

Refer to the unit Service Facts (shipped with eac h unit) for filter requirements.

Note: Do not operate the unit without filters.

Low Voltage Wiring (AC & DC) Requirements

• Install the zone thermostat, with or without switching subbase.

• Connect properly sized control wiring to the proper termination points between the zone thermostat and the unit control panel.

Field Installed Power Wiring

An overall dimensional layout for the standard field installed wiring entrance into the unit is illustrated in the

Unit Dimensions section. To insure that the unit’s supply

power wiring is properly sized and installed, follow the guidelines outlined below.

Note: All field installed wiring must conform to NEC

guidelines as well as State and Local codes.

Ve rify that the power supply available is compatible with the unit’s nameplate ratings. The available supply power must be within 10% of the rated voltage stamped on the nameplate. Use only copper conductors to connect the power supply to the unit.

NOTICE:

Use Copper Conductors Only!

Unit terminals ar e not designed t o accept other types of conductors. Failure to use copper conductors could result in equipment damage.

RT-SVX33E-EN 19

Page 20

Installation

Note: If the unit is not equipped with an optional factory

installed nonfused disconnect switch or circuit breaker, a field supplied disconnect switc h must be installed at or near the unit in accordance with the National Electrical Code (NEC latest edition).

Main Unit Power

WARNING

Proper Field Wiring and Grounding Required!

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 MUS T f ollow r equir ements f or field wiring installation and grounding as described in NEC and your local/state electrical codes. Failure to follow code could result in death or serious injury.

Standard Wiring

The electrical service must be protected from over current and short circuit conditions in accordance with NEC requirements. Protection devices must be siz ed according to the electrical data on the nameplate.

1. If the unit is not equipped with an optional factory installed nonfused disconnect switch or circuit breaker, a field supplied disconnect switc h must be installed at or near the unit in accordance with the National Electrical Code (NEC latest edition).

2. Location of the applicable electrical service entrance is illustrated in the Unit Dimensions section. Complete the unit’s power wiring connections onto either; the main terminal bloc k HTB1 inside the unit control panel, the factory mounted nonfused disconnect switch (UCD) or circuit breaker (UCB), or the electric heat terminal block. Refer to the customer connection diagram that shipped with the unit for specific termination points.

3. Provide proper grounding for the unit in accordance with local and national codes.

Optional TBUE Wiring (Through the Base Electrical Option)

1. Location of the applicable electrical service is illustrated in the following illustration. Refer to the customer connection diagram that is shipped with the unit for specific termination points. The termination points, depending on the customer option selected would be a factory mounted nonfused disconnect switch (UDC) or circuit breaker (UCB).

2. Provide proper grounding for the unit in accordance with local and national codes.

Figure 16. Through the base electrical option

Field Installed Control Wiring

An overall layout of the various control options available with the required number of conductors for each control device is illustrated in Figure 18, p. 22.

Note: All field wiring must conform to NEC guidelines as

well as state and local codes.

Control Power Transformer

The 24 volt control power transformers are to be used only with the accessories called out in this manual. T ransformers rated greater than 50 Vac are equipped with internal circuit breakers. If a circuit breaker trips, turn “Off ” all power to the unit before attempting to reset it.

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the pow er can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

The transformer is located in the control panel. The circuit breaker is located on the left side of the transformer and can be reset by pressing in on the black reset button.

Controls Using 24 VAC

Before installing any connecting wiring, refer to “Unit

Dimensions,” p. 11 for the electrical access locations

provided on the unit and Table 4, p. 21 for AC conductor sizing guidelines, and;

20 RT-SVX33E-EN

Page 21

Installation

RTRM

1. Use copper conductors unless otherwise specified.

2. Ensure that the AC control wiring between the controls and the unit’ s termination point does not exceed three (3) ohms/conductor for the length of the run.

NOTICE:

Component Failure!

Resistance in excess of 3 ohms per conductor could result in component failure due to insufficient AC voltage supply.

3. Be sure to check all loads and conductors for grounds, shorts, and mis-wiring.

4. Do not run the AC low voltage wiring in the same conduit with the high voltage power wiring.

5. Route low voltage wiring per illustrations on Figure17,

p. 21.

Table 4. Electromechanical thermostat 24 Vac

Distance from Unit to

000 - 460 feet (000 - 140 m) 18 gauge (0.75 mm2) 461 - 732 feet (141 - 223 m) 16 gauge (1.3 mm

733 - 1000 feet (224 - 305 m) 14 gauge (2.0 mm

conductors with ReliaTel™

Control Recommended Wire Size

)

Figure 17. Reliatel conv ention al the rmostat field wiring

diagram

Controls Using DC Analog Input/Outputs (Standard Low Voltage Multiconductor Wire)

Before installing any connecting wiring between the unit and components utilizing a DC an alog input\output signal, refer to “Unit Dimensions,” p. 11 for the electrical access locations provided on the unit.

1. Table 5, p. 21 lists the conductor sizing guidelines th at must be followed when interconnecting the DC binary output devices and the system components utilizing a DC analog input\output signal to the unit.

Note: Resistance in excess of 2.5 ohms per conductor can

cause deviations in the accuracy of the controls.

2. Ensure that the wiring between controls and the unit’ s termination point does not exceed two and a half (2.5) ohms/conductor for the length of the run.

3. Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires.

Table 5. DC conductors zone sensor module wiring

Distance from Unit to Control Recommended Wire Size

0 - 150 feet (0 - 45.7 m) 22 gauge (0.33 mm2)

151 - 240 feet (46 - 73.1 m) 20 gauge (0.50 mm

241 -385 feet (73.5 - 117.3 m) 18 gauge (0.75 mm 386 - 610 feet (117.7 - 185.9 m) 16 gauge (1.3 mm 611 - 970 feet (186.2 - 295.7 m) 14 gauge (2.0 mm

)

RT-SVX33E-EN 21

Page 22

Installation

Figure 18. Typical field wiring diagrams for optional controls (ReliaTel™ only)

BAYSENS075* ASYSTAT669*

BAYSENS119* ASYSTAT666*

BAYSENS077* ASYSTAT669*

BAYSENS073*

BAYSENS074*

BAYSENS075* ASYSTAT669*

BAYSENS107*

BAYSTAT023*

BAYSENS109*

22 RT-SVX33E-EN

Page 23

Installation

Space Temperature Averaging

Space temperature averaging is accomplished by wiring a number of remote sensors in a series/parallel circuit.

Using the BAYSENS016* or BAYSENS075*, at least four sensors are required to accomplish space temperature averaging. Example #1 illustrates two series circuits with two sensors in each circuit wired in parallel. The square of

Figure 19. Space temperature averaging examples

any number of remote sensors is required. Example #2 illustrates three sensors squared in a series/parallel circuit. Using BAYSENS075*, two sensors are required to accomplish space temperature averaging. Example #3 illustrates the circuit required for this senor. Table 6, p. 24 lists the temperature versus resistance coefficient for all sensing.

RT-SVX33E-EN 23

Page 24

Installation

100

AV VD–

-----------------------





Volt1 Volt2 Volt3++

---------------------------------------------------------------- -





221 230 227++

-----------------------------------------------

2.2per cent=

100

226 221–

226

----------------------------





2.2percent=

Table 6. Temperatu re vs. resistance

Temperature

Nominal ResistanceDegrees F° Degrees C°

-20° -28.9° 170.1 K - Ohms

-15° -26.1° 143.5 K - Ohms

-10° -23.3° 121.4 K - Ohms

-5° -20.6° 103.0 K - Ohms 0° -17.8° 87.56 K - Ohms 5° -15.0° 74.65 K - Ohms

10° -12.2° 63.80 K - Ohms 15° -9.4° 54.66 K - Ohms 20° -6.7° 46.94 K - Ohms 25° -3.8° 40.40 K - Ohms 30° -1.1° 34.85 K - Ohms 35° 1.7° 30.18 K - Ohms 40° 4.4° 26.22 K - Ohms 45° 7.2° 22.85 K - Ohms 50° 10.0° 19.96 K - Ohms 55° 12.8° 17.47 K - Ohms 60° 15.6° 15.33 K - Ohms 65° 18.3° 13.49 K - Ohms 70° 21.1° 11.89 K - Ohms 75° 23.9° 10.50 K - Ohms 80° 26.7° 9.297 K - Ohms 85° 29.4° 8.247 K - Ohms 90° 32.2° 7.330 K - Ohms 95° 35.0° 6.528 K - Ohms

100° 37.8° 5.824 K - Ohms

Voltage Imbalance

Three phase electrical power to the unit must meet stringent requirements for the unit to operate properly. Measure each leg (phase-to-phase) of the power supply. Each reading must fall within the utilization range stamped on the unit nameplate. If any of the readings do not fall within the proper tolerances, notify the power company to correct this situation before operating the unit.

Excessive three phase voltage imbalance between phases will cause motors to overheat and eventually fail. The maximum allowable voltage imbalance is 2%. Measure and record the voltage between phases 1, 2, and 3 and calculate the amount of imbalance as follows:

% Voltage Imbalance =

Example: If the voltage readings of the supply power measured 221, 230, and 227, the average volts would be:

VD (reading farthest from average) = 221 The percentage of Imbalance equals:

The 2.2% imbalance in this example exceeds the maximum allowable imbalance of 2.0%. This much imbalance between phases can equal as much as a 20% current imbalance with a resulting increase in motor winding temperatures that will decrease motor life. If the voltage imbalance is over 2%, notify the proper agencies to correct the voltage problem before operating this equipment.

Electrical Phasing (Three Phase Motors)

The compressor motor(s) and the supply fan motor are internally connected for the proper rotation when the incoming power supply is phased as A, B, C.

Proper electrical supply phasing can be quickly determined and corrected before star ting the unit by using an instrument such as an Associated Research Model 45 Phase Sequence Indicator and following the steps below:

• T urn the field supplied disconnect switch that provides power to the main power terminal block or to the “Line” side of the optional factory mounted disconnect switch to the “Off” position.

• Connect the phase sequence indicator leads to the terminal block or to the “Line” side of the optional factory mounted disconnect switch as follows;

• Black (phase A) to L1

• Red (phase B) to L2

• Yellow (phase C) to L3

• Close the field supplied main power disconnect switch or circuit protector switch that provides the supply power to the unit.

• Observe the ABC and CBA phase indicator lights on the face of the sequencer. The ABC indicator light will glow if the phase is ABC. If the CBA indicator light glows, open the disconnect switc h or circuit protection switc h and reverse any two power wires.

• Restore the main electrical power and recheck the phasing. If the phasing is correct, open the disconnect switch or circuit protection switch and remove the phase sequence indicator.

where Average Voltage (AV);

V1, V2, V3 = Line Voltage Readings VD = Line Voltage reading that deviates the far thest f rom

the average voltage.

24 RT-SVX33E-EN

Page 25

Installation

Compressor Crankcase Heaters

NOTICE:

Compressors Failure!

Unit must be powered and crankcase heaters ener gized at least 8 hours BEFORE compressors are started. This will protect the compressors from premature failure.

Each compressor is equipped with a crankcase heater . The proper operation of the crankcase heater is important to maintain an elevated compressor oil temperature during the “Off” cycle to reduce oil foaming during compressor starts. Oil foaming occurs when refrigerant condenses in the compressor and mixes with the oil. In lower ambient conditions, refrigerant migration to the compressor could increase.

When the compressor starts, the sudden reduction in crankcase pressure causes the liquid refrigerant to boil rapidly causing the oil to foam. This condition could damage compressor bearings due to reduced lubrication and could cause compressor mechanical failures.

Before starting the unit in the “Cooling” mode, set the system switch to the “Off” position and turn the main power disconnect to the “On” position and allow the crankcase heater to operate a minimum of 8 hours.

Before closing the main power disconnect switch, insure that the “System” selection switch is in the “Off” position and the “Fan” selection switch is in the “Auto” position.

Close the main power disconnect switch and the unit mounted disconnect switch, if applicable.

Final Steps

Use the checklist provided below in conjunction with the chec klist in “G eneral Unit R equirements,” p. 18, to ensure that the unit is properly installed and ready for operation.

• Check all electrical connections for tightness and “point of termination” accuracy.

• Verify that the condenser airflow is unobstructed.

• Verify that the condenser fan and indoor blower turn freely without rubbing and are properly tightened on the shafts.

• Check the supply fan belts for proper tension an d the fan bearings for sufficient lubrication. If the belts require adjustment, or if the bearings need lubricating, refer to the maintenance section of this manual for instructions.

• Verify that a condensate trap is installed and the piping is properly sized and pitched.

• Verify that the cor rect siz e and number of filters are in place.

• Inspect the interior of the unit for tools and debris and install all panels in preparation for starting the unit.

ReliaTel Controls

Upon power initialization, the RTRM performs selfdiagnostic 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 RT RM module is turn ed “ O n” within one second of power-up if internal operation is okay.

Use one of the following “T est” procedure 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 “T est” terminals for two to three seconds. The Liteport LED located on the RTRM module will blink when the test mode has been initiated. The unit can be left in any “Test” step for up to one hour before it will automatically terminate, or it can be terminated by opening the main power disconnect switch. Once the test mode has been terminated, the Liteport LED will glow continuously and the unit will revert to the “System” control.

RT-SVX33E-EN 25

Page 26

Factory-Mounted Unit Options

Wire Ties

Circuit Breaker (FIYUCB) & Unit Disconnect (FIYUDC)

WARNING

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. Verify with an appropriate voltmeter that all capacitors hav e dischar ged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.

For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN

WARNING

Proper Field Wiring and Grounding Required!

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

power conductors to the lugs provided. Connect the ground wire to the unit ground lug.

Note: Wire size for the length of run should be

determined using the circuit ampacity found on the unit nameplate and the N.E.C.

4. Route low voltage (class II), control wiring through hole in base of unit but not through high voltage conduit. Feed control wiring through b ushing provided on side panel and into the flexible conduit provided in the heat section of the unit (Figure 20). Route wires through loose wire ties provided in unit as in Figure 20.

5. Tighten the wire ties. Secure the excess wire bundle under the wire ties in the outdoor section. Do not leave excess wire in the electrical enclosure. Use the unit wiring diagram to make the low voltage connections.

Figure 20. Main power entrance for units with factory

mounted disconnect or circuit breaker

Important: All phases of this installation must comply

with NATIONAL, STATE, and LOCAL CODES. In addition to local codes, the installation must comply with National Electric Code - ANSI/NFPA NO. 70 LATEST REVISION.

1. Field connections are made by first removing all access panels on the front of the unit. Unscrew the assembly around the outside of the disconnect switch or circuit breaker. This assembly is located between the evaporator and heat section of the unit (Figure 20,

p. 26).

For downflow configurations, the hole in the base section is for both high and low voltage power wiring on down flow units. Horizontal units will route through the front plate located directly under the circuit breaker or disconnect panel. The hole is sized for 1 1/2" conduit. Horizontal units will use the front plat e located directly under the circuit breaker panel.

2. If the conduit required for your application is larger, remove the termination plate and connect to the larger hole using field supplied reducing washers.

3. Route the power wires and ground conductor through conduit and into the bottom of the factory installed disconnect switch or circuit breaker. Connect the

26 RT-SVX33E-EN

Page 27

Powered/Unpowered Convenience Outlet

WARNING

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. Verify with an appropriate voltmeter that all capacit ors ha ve discharged. Fa ilur e t o disconnect power and discharge capacitors before servicing could result in death or serious injury.

For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN

Factory-Mounted Unit Options

WARNING

Proper Field Wiring and Grounding Required!

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

Powered Convenience Outlet Powered Option (FIYCOPO)

When the powered convenience outlet option is installed, the unit will include a dedicated transformer located in the evaporator section of the unit. Additionally, a service receptacle disconnect switc h will be provided on the side wall of the evaporator section. The service receptacle switch is shipped in the OFF position.

The powered outlet comes completely wired from the factory except for 208 volt applications.

1 . For 208 volt applications, disconnect and tape the blue

230 volt wire.

2. Then connect the brown 208 volt wire.

Figure 21. Wiring schematic 12½ through 25 ton options

RT-SVX33E-EN 27

Page 28

Factory-Mounted Unit Options

A - Powered

B - Powered

Unpowered Convenience Outlet Unpowered Option (FIYCOUP)

1. When the unpowered convenience outlet option is installed, remove the receptacle.

2. The field wiring should be routed through the hole in the base for downflow applications or front panel for horizontal applications then through holes provided in the “J” box (bottom for EMT and top for flexible conduit).

3. Connect the three (3) wires to terminals inside outlet box.

Figure 22. Pow er options

WARNING

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the pow er cannot be inadvertently energized. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors befor e servicing could result in death or serious injury.

For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN

WARNING

Proper Field Wiring and Grounding Required!

Return Air Smoke Detector

Pre-Requisite

Note: The following field installation instructions apply

to downflow only. Horizontal return air smoke detectors require no field installation.

When a unit is ordered with a downflow economizer and a return air smoke detector as factory installed options, the return air smoke detector cannot be completely installed because the economizer, when it is in the shipping position, is occupying the space where the return air smoke detector is to be installed.

The partial assembly and set-up required for each factory installed economizer must be completed up to the point where the barometric relief hood is to be installed into the unit. Prior to this operation, go to Step 5 of this instruction and perform the operations described there. After this is completed, the economizer installation is to be completed in its entirety as outlined in the installation guide.

Smoke Detector Installation

Important: The shipping screw that holds the

barometric relief damper must be removed before proceeding with the smoke detector installation.

After completion of the economizer installation as outlined above, proceed with the installation of the return air smoke detector as follows:

1. Remove the smoke detector assembly from its shipping position in the indoor fan compartment. This assembly is attached with three screws to the indoor fan board near the top of the unit.

2. Remove and discard the shipping bracket from the smoke detector assembly. This is the angled piece of sheet metal that secured the smoke detector assembly to the interior parts of the unit during shipment.

3. Place the end of the smoke detector 16 inch metal exhaust tube provided into the bottom hol e in the back of the smoke detector. Line up the tab in the exhaust tube with one of the slots in the detector and insert the tube until the tube can be rotated. Rotate the tube 45 degrees to lock it in place.

Figure 23. Brackets

28 RT-SVX33E-EN

Page 29

Figure 24. R eturn air smoke detector for downflow units

SMOKE DETECTOR

COPPER TUBE

(FACTORY INSTALLED)

PLASTIC ELBOW

VINYL TUBES (7-3/4 INCHES LONG)

TWO PIECE HOOD

METAL INTAKE TUBE

METAL EXHAUST TUBE

(16.34 INCHES LONG)

VINYL TUBES (2 INCHES LONG)

TUBES INSTALL FROM BOTTOM, TOP DOES NOT NEED TO BE REMOVED FROM SMOKE DETECTOR

Factory-Mounted Unit Options

4. Slide one 2” piece of the vinyl tubing provided onto the short smoke detector inlet tube whic h protrudes out of the back side of the smoke detector . P ush this piece of vinyl tubing onto the inlet tube until it contacts the end of the plastic extension on the backside of the smoke detector.

5. Slide the long piece of vinyl tubing provided onto one leg of the plastic barbed elbow provided. Slide the other end of this piece of vinyl tubing with the elbow attached appro ximately 1” onto the end of the copper sampling tube installed in the unit’ s return air opening. Position the leg of elbow without the vinyl tubing suc h that it points toward the front side of the unit (directly out of the unit toward the filter access panel).

6. Mount the smoke detector assembly into the unit. Align the smoke detector (exhaust tube down) with the holes in the outer panel of the barometric relief hood and position the smoke detector flush on the panel.

Note: On all units there is a hole with a plastic snap

bushing located on the inner vertical side of the barometric relief hood that the long exh au s t tube must pass through. Be sure that the exhaust tube is aligned with this hole before positioning the smoke detector flush on the outer panel of the barometric relief hood.

7. Secure the smoke detector to the hood with two #10-16 x 3/4’ sheet metal screws provided.

Note: In order to perform the last part of this operation, it

will be necessary to remove the barometric relief

filter, open t he barometric relief damper , and reach inside through the barometric relief outlet to access and connect the copper exhaust elbow to the smoke detector exhaust tube.

8. Connect the leg of the plastic elbow without the vinyl tubing attached that was installed in Step 5 to the smoke detector inlet tube pushing it onto the piece of vinyl tubing attached to the inlet tube.

9. Refer to Figure 25, p. 30 for wire connections of return air smoke detector to the unit wiring harness.

10. This completes the installation of the return air smoke detector. If the unit’ s air filter(s) and/or barometric relief filter were removed to ease installation of the smoke detector, they need to be replaced at this time.

Airflow & Sampling

Refer to the instructions provided below regarding unit airflow to assure that the return air smoke detector will function properly.

Important: The return air smoke detector is designed to

shut off the unit if smoke is sensed in the return air stream. This function is performed by sampling the airflow entering the unit at the return air opening. Foll ow the instructions provided below to assure that the airflow through the unit is sufficient for adequate sampling. Failure to follow these instructions will prevent the smoke detector from performing its design function.

RT-SVX33E-EN 29

Page 30

Factory-Mounted Unit Options

In order for the return air smoke detector to properly sense smoke in the return air stream, the air velocity entering the unit must be between 500 and 4000 feet per minute.

Notes:

• Airflow through the unit is affected by the amount of

dirt and debris accumulated on the indoor coil and filters. To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector, complete adherence to the maintenance procedures, including recommended intervals between filter changes and coil cleaning, is required.

• Periodic chec ks and mai ntenance procedures must be performed on the smoke detector to insure that it will function properly . For detailed instructions concerning these checks and procedures, refer to the appropriate section(s) of the smoke detector Installation and Maintenance Instructions provided with the literature package for this unit.

Important: Refer to the service literature provided for

testing and other information about the smoke detector or if problems are encountered.

Figure 25. Smoke detector wiring scheme

30 RT-SVX33E-EN

Page 31

Pre-Start

Test Modes

resistance value is placed across the two test terminals. The unit will remain in the specific test mode

There are three methods in which the “T est” mode can be cycled at LTB-Test 1 and LTB-Test 2.

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 one hour to complete the chec k.

2. Resistance Test Mode - This method can be used for start-up providing a decade box for variable resistance outputs is available. This method initiates the different components of the unit, one at a time, when a specific

for approximately one hour even though the resistance is left on the test terminals.

3. Auto Test Mo de - 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, test modes, and step resistance values to cycle the various components, refer to Table 7, p. 31.

Table 7. Service test guide for component operation

TEST STEP M ODE Fan Econ

2 Economizer Test Open On Open Off Off Off Off 3.3K 3 Cool Stage 1 On Minimum Position On

Notes:

1. The condenser fans will operate any time a compressor is "On" providing the outdoor air temperatures are within the operating values.

2. The exhaust fan will turn on anytime the economizer damper position is equal to or greater than the exhaust fan setpoint.

3. Steps for optional accessories and non-applicable modes in unit will be skipped.

Fan On

Minimum Ventilation On Selectable Off Off Off Off

Cool Stage 2 On Minimum Position On

Reheat On Minimum On On Off Off 33K Heat Stage 1 On Minimum Off Off On Off 10K Heat Stage 2 On Minimum Off Off On On 15K

Minimum Position Off

Setpoint 0%

Comp 1 Comp 2 Heat 1 Heat 2 Ohms

Off Off Off 2.2K

Off Off Off 4.7K

Off Off 6.8K

RT-SVX33E-EN 31

Page 32

Pre-Start

Verifying Proper Air Flow (Units with Belt Drive Indoor Fan)

Much of the systems performance and reliability is closely associated with, and dependent upon having the proper airflow supplied both to the space that is being conditioned and across the evaporator coil.

The indoor fan speed is c hanged by opening or closing the adjustable motor sheave.

Before starting the SERVICE TEST, set the minimum position setpoint for the economizer to 0 percent using the setpoint potentiometer located on the Economizer Control (ECA), if applicable.

ReliaTel Control

Using the Service T est Guide in T able 7 , p. 31, momentarily jump across the T est 1 & T est 2 terminals on L TB1 one time to start the Minimum Ventilation Test.

Once the supply fan has started, c hec k for proper rotation. The direction of rotation is indicated by an arrow on the fan housing.

With the fan operating properly, determine the total system airflow (CFM) by;

1. Measuring the actual RPM,

2. Measure the amperage at the supply fan contactor and compare it with the full load amp (FLA) rating stamped on the motor nameplate.

a. Calculate the theoretical BHP

Actual Motor Amps X Motor HP Motor Nameplate Amps

b. Using the fan performance tables in the unit Service

Facts, plot the actual RPM (step 1) and the BHP (step 2a) to obtain the operating CFM.

3. If the required CFM is too low, (external static pressure is high causing motor HP output to be below table value),

a. Relieve supply and/or return duct static. b. Change indoor fan speed and repeat steps 1 and 2.

• T o Increase Fan RPM; Loosen the pulley adjustment set screw and turn sheave clockwise.

• To Decrease Fan RPM; Loosen the pulley adjustment set screw and turn sheave counterclockwise.

• If the required CFM is too high, (external static pressure is low causing motor HP output to be above table value), change indoor fan speed and repeat steps 1 and 2.

• To stop the SERVICE TEST, turn the main power disconnect switch to the “Off” position or proceed to the next component start-up procedure. Remove electro mechanical test mode connections (if applicable).

Return Air Smoke Detector

The return air smoke detector is designed to sh ut off the unit if smoke is sensed in the return air stream. Samplin g the airflow entering the unit at the return air opening performs this function.

In order for the smoke detector to properly sense smoke in the return air stream, the air velocity entering the unit must be between 500 and 4000 feet per minute. Equipment covered in this manual will develop an airflow velocity that falls within these limits over the entire airflow range specified in the evaporator fan performance tables.

32 RT-SVX33E-EN

Page 33

Start Up

Economizer Start-Up

Using the Service T est Guide in T able 7 , p. 31, momentarily jump across the T est 1 & T est 2 terminals on L TB1 one time to start the Minimum Ventilation Test.

1 . Set the minimum position setpoint for the economiz er

to the required percentage of minimum ventilation using the setpoint potentiometer located on the Economizer Control Actuator (ECA).

The economizer will drive to its minimum position setpoint, exhaust fans (if applicable) may start at random, and the supply fan will start when the SERVICE TEST is initiated.

The Exhaust Fan will start anytime the economizer damper position is equal to or greater than the exhaust fan setpoint.

2. Verify that the dampers stroked to the minimum position.

3. Momentarily jump across the Test 1 & Test 2 terminals on L TB one additional time if continuing from previous component start-up or until the desired start-up component Test is started.

4. Verify that the dampers stroked to the full open position.

5. To stop the SERVICE TEST, turn the main power disconnect switch to the “Off” position or proceed to the next component start-up procedure. Remove electro mechanical test mode connections (if applicable).

Compressor Start-Up

1. Attach a set of service gauges onto the suction and discharge gauge ports for each circuit. Refer to the refrigerant circuit illustration in the Service Facts.

Using the Service Test Guide in Table 7 , p. 31, continue the SERVICE TEST start-up procedure for each compressor circuit.

Momentarily jump across the Test 1 & Test 2 terminals on LTB1 one additional time if continuing from previous component start-up or until the desired startup component Test is started.

b. If the electrical phasing is incorrect, before

condemning a compressor, interchange any two leads (at the compressor Terminal block) to check the internal phasing. Refer to the following illustration for the compressor terminal/phase identification. If the compressor runs backward for an extended period not to exceed 5 seconds, the compressor will be damaged the motor winding can overheat and cause the motor winding thermostat to open and the oil can turn dark gray.

c. Check th e compressor oil levels. The oil level in each

compressor sight glass should be visible in the compressor sightglass. This only applies to CSHD compressors, SSA and SPA compressors don't have sight glasses.

Note: The Copeland, SSA and SP A scroll compressors for

R-410A units use Trane OIL00094. The correct Oil for Trane CSHD is Trane OIL00079 or OIL00080. Compressor types are listed in the table below. The appropriate oil charge is also listed below

2. After the compressor and condenser fan have started and operated for approximately 30 minutes, observe the operating pressures. Compare the operating pressures to the operating pressure curve in the Service Facts.

3. Check system superheat. Follow the instruction listed on the superheat charging curve in the Service Facts. Superheat should be within ±5ºF of the superheat c hart value.

4. Repeat steps 1 through 4 for each refrigerant circuit.

5. To stop the SERVICE TEST, turn the main power disconnect switch to the “Off” position or proceed to the next component start-up procedure.

6. The Copeland, SSA and SP A scro ll compressors for R-

410A units use Trane OIL00094. The correct Oil for Trane CSHD is Trane OIL00079 or OIL00080. Compressor types are listed in the following table. The appropriate oil charge is also listed below.

Figure 26. Compressor terminal box

Scroll Compressors

a. Once each compressor has started, verify that the

rotation is correct. To check rotation, use a set of refrigeration gauges hooked up to the suction and discharge pressure port. If the compressor is phased correctly the suction pressure should drop and the discharge pressure should rise when the compressor starts and runs. If a scroll compressor is rotating backw ards, it will not pump, the su ction and discharge pressure will no t rise, and a lo ud rattling sound can be observed.

RT-SVX33E-EN 33

Page 34

Start Up

Table 8. Oil charge

Model Circuit 1 Circuit 2

WS*150 56 oz 56 oz WS*155/WS*180 56 oz 56 oz WS*200/WS*240 112 oz 112 oz

Table 9. Compressor types

Tonnage C1 C2

WS*150 SSA067 SSA067 WS*155/WS*180 SSA083 SSA083 WS*200/WS*240 CSHD125 CSHD125

Heating Start-Up

1. Clamp an amp meter around one of 1st stage heater power wires at the heater contactor.

2. Using the Service T est Guide in Table 7, p. 31, continue the SERVICE TEST start-up procedure for each compressor circuit.

Momentarily jump across the Test 1 & Test 2 terminals on L TB one additional time if continuing from previous component start-up or until the desired start-up component Test is started.

3. Verify that the heater stage is operating properly.

4. Clamp an amp meter around one of 2 power wires at the heater contactor (if applicable).

5. Using the Service T est Guide in Table 7, p. 31, continue the SERVICE TEST start-up procedure for each compressor circuit. Momentarily jump across the T est 1 & Test 2 terminals on LTB one additional time if continuing from previous component start-u p or until the desired start-up component Test is started.

6. Verify that the heater stage is operating properly.

7. To stop the SERVICE TEST, turn the main power disconnect switch to the “Off” position or proceed to the next component start-up procedure.

stage heater

• Verify that all exterior panels including the control panel doors and condenser grilles are secured in place.

• Close the main disconnect switch or circuit protector switch that provides the supply power to the unit’s terminal bloc k or the u nit moun ted disco nnect switch.

Final System Setup

After completing all of the pre-start and start-up procedures outlined in the previous sections (i.e., operating the unit in eac h of its Mo des thro ug h al l available stages of cooling & heating), perform these final checks before leaving the unit:

• Program the Night Setbac k (NSB) panel ( if applicable) for proper unoccupied operation. Refer to the programming instructions for the specific panel.

• Verify that the Remote panel “System” selection switch, “Fan” selection switch, and “Zone Temperature” settings for automatic operation are correct.

• Inspect the unit for misplaced tools, hardware, and debris.

34 RT-SVX33E-EN

Page 35

Maintenance

Make sure all personnel are standing clear of the unit before proceeding. The system components will star t when the power is applied.

Fan Belt Adjustment - Belt Drive Units

WARNING

Rotating Components!

The following pr ocedur e inv olves w or king with r otating components. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tag out pr ocedur es to ensur e the po w er can not be inadverten tly ener gize d. Fa ilur e to disconnect po we r before servicing could result in rotating components cutting and slashing te chnician which could result in death or serious injury.

The fan belts must be inspected periodically to assur e proper unit operation.

Replacement is necessary if the belts appear frayed or worn. Units with dual belts require a matc hed set of belts to ensure equal belt length.

When removing or installing the new belts, do no t stretc h them over the sheaves. Loosen the belts using the belt tension adjustment bolts on the motor mounting base.

Once the new belts are installed, using a Browning or Gates tension gauge (or equivalent) illustrated in

Figure 27, p. 35; adjust the belt tension as follows;

1. To determine the appropriate belt deflection; a. Measure the center-to-center shaft distance (in

inches) between the fan and motor sheaves.

b. Divide the distance measured in Step 1a by 64; the

resulting value represents the amount of belt deflection that corresponds to the proper belt tension.

2. Set the large O-ring on the belt tension gauge at the deflection value determined in Step 1b.

3. Set the small O-ring at zero on the force scale of the gauge plunger.

4. Place the large end of the gauge at the center of the belt span; then depress the gauge plunger until the large Oring is even with the top of the next belt or even with a straightedge placed across the fan and motor sheaves. Refer to Figure 27, p. 35.

5. Remove the belt tension gauge. The small O-ring now indicates a number other than zero on the plunger’s force scale. This number represents the force (in pounds) required to give the needed deflection.

6. Compare the “force” scale reading (Step 5) with the appropriate “force” value listed in T able 10, p. 35. If the “force” reading is outside the range, readjust the belt tension.

Note: Actual belt deflection “force” must not exceed the

maximum “force” value shown in Table 10, p. 35.

Table 10. Belt tension measurement and deflection

ranges

Deflection Force (Lbs.)

Belts

Cross

Section

Small

P.D

Range

3.0 - 3.6 3 4 1/2 3 7/8 5 1/2 3 1/4 4

3.8 - 4.8 3 1/2 5 4 1/2 6 1/4 3 3/4 4 3/4

5.0 - 7.0 4 5 1/2 5 6 7/8 4 1/4 5 1/4

3.4 - 4.2 4 5 1/2 5 3/4 8 4 1/2 5 1/2

4.4 - 5.6 5 1/8 7 1/8 6 1/2 9 1/8 5 3/4 7 1/4

5.8 - 8.8 6 3/8 8 3/4 7 3/8 10 1/8 7 8 3/4

Super

Gripbelts Gripnotch

Min. Max. Min. Max. Min. Max

Steel Cable

Gripbelts

7. Recheck the belt tens ion at least twice during the first 2 to 3 days of operation. Belt tension may decrease until the new belts are “run in”.

Figure 27. Belt tension gauge

Monthly Maintenance

WARNING

Hazardous Voltage!

Before completing the following chec ks, turn the unit OFF and lock the main power discon nect switch open. Failure to disconnect power before servicing can cause severe personal injury or death.

RT-SVX33E-EN 35

Page 36

Maintenance

Filters

Inspect the return air filters. Clean or replace them if necessary. Refer to the unit Service Facts for filter information.

Condensate Overflow Switch

During maintenance, the switch float (black ring) must be checked to ensure free movement up and down.

Return Air Smoke Detector Maintenance

Airflow through the unit is affected by the amount of dirt and debris accumulated on the indoor coil and filters. To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector, complete adherence to the maintenance procedures, including recommended intervals between filter changes, and coil cleaning is required.

Periodic checks and maintenance procedures must be performed on the smoke detector to insure that it will function properly. For detailed instructions concerning these checks and procedures, refer to the appropriate section(s) of the smoke detector Installation and Maintenance Instructions provided with the literature package for this unit.

Cooling Season

• Check the unit’s drain pans and condensate piping to ensure that there are no blockages.

• Inspect the evaporator and condense r coils for dirt, bent fins, etc. If the coils appear dirty, clean them according to the instructions described in “Coil Cleaning” later in this section.

• Manually rotate the condenser fan(s) to ensure free movement and check motor bearings for wear. Verify that all of the fan mounting hardware is tight.

• Inspect the F/A-R/A damper hinges and pins to ensure that all moving parts are securely mounted. Keep the blades clean as necessary.

• Verify that all damper linkages move freely; lubricate with white grease, if necessary.

• Check supply fan motor bearings; repair or replace the motor as necessary.

• Check the fan shaft bearings for wear. Replace the bearings as necessary.

• Check the supply fan belt. If the belt is frayed or worn, replace it. Refer to the “Fan Belt Adjustment” section for belt replacement and adjustments.

• Verify that all wire terminal connections are tight.

• Remove any corrosion present on the exterior surfaces of the unit and repaint these areas.

• Generally inspect the unit for unusual condition s (e.g., loose access panels, leaking piping connections, etc.)

• Make sure that all retaining screws are reinstalled in the unit access panels once these chec ks are complete.

• With the unit running, c h eck and record the: ambient temperature; compressor suction and discharge pressures (each circuit); superheat (each circuit);

Record this data on an “operator’s maintenance log” like the one shown in T able 1 1, p. 37. If the operating pressures indicate a refrigerant shortage, measure the system superheat. For guidelines, refer to the “Compressor Star tUp” section.

Note: Do not release refrigerant to the atmosphere! If

adding or removing refrigerant is required, the service technician must comply with all federal, state and local laws.

Heating Season

• Inspect the unit’s air filters. If necessary, clean or replace them.

• Check supply fan motor bearings; repair or replace the motor as necessary.

• Inspect both the main unit control panel and hea t section control box for loose electrical components and terminal connections, as well as damaged wire insulation. Make any necessary repairs.

• Verify that the electric heat system operates properly.

Coil Cleaning

Regular coil maintenance, including annual cleaning, enhances the unit’s operating efficiency by minimizing: compressor head pressure and amperage draw; evaporator water carryover; fan brake horsepower, due to increase static pressure losses; airflow reduction.

At least once each year , or more often if the unit is located in a “dirty” environment, clean the evaporator and condenser coils using the instructions outlined below. Be sure to follow these instructions as closely as possible to avoid damaging the coils.

To clean refrigerant coils, use a soft brush and a sprayer (either a garden pump-up type or a high-pressure sprayer). A high-quality detergent is also required; suggested brands include “SPREX A.C.”, “O AKITE 161”, “O AKITE 166” and “COIL OX”. If the detergent selected is strongly alkaline (ph value exceeds 8.5), add an inhibitor.

1 . Remove enough panels from the unit to gain access to

the coil. Remove the access panel from the roof located next to the rear condenser fan.

2. Protect all electrical devices such as motors and controllers from any over spray.

3. Straighten any bent coil fins with a fin comb.

4. Mix the detergent with water according to the manufacturer’s instructi ons. If desired, heat the solution to 150° F maximum to improve its cleansing capability.

36 RT-SVX33E-EN

Page 37

WARNING

Hazardous Pressures!

If a heat source is required to raise the tank pressure during r emoval of refri gerant from cylinders, use only warm water or heat blankets to raise the tank temperature. Do not exceed a temperature of 150°F. Do not, under any circumstances apply direct flame to any portion of the cylinder. Failure to follow these safety precautions could result in a sudden rise of pressure possibly resulting in a violent explosion which could result in death or serious injury.

Do not heat the detergent-and-water solution above 150°F. Hot liquids sprayed on the exterior of the coil will raise the coil’ s internal pressure and may cause it to burst. Failure to follow proper procedures can result in personal illness or injury or severe equipment damage.

5. Pour the cleaning solution into the sprayer. If a highpressure sprayer is used:

a. do not allow sprayer pressure to exceed 600 psi. b. the minimum nozzle spray angle is 15 degrees. c. maintain a minimum clearance of 6" between the

sprayer nozzle and the coil.

d. spray the solution perpendicular (at 90 degrees) to

the coil face.

6. Spray the leaving-airflow side of the coil first; then spray the opposite side of the coil. Allow the cleaning solution to stand on the coil for five minutes.

7. Rinse both sides of the coil with cool, clean water.

Maintenance

8. Inspect both sides of the coil; if it still appears to be dirty, repeat Steps 6 and 7.

9. Reinstall all of the components and panels removed in Step 1 and any protective covers installed in step 2.

10. Restore the unit to it’s operational status and check system operation.

Final Process

For future reference, you may find it helpful to record the unit data requested below in the blanks provided.

(1) Complete Unit Model Number: _____________________________________________________

__________________ (2) Unit Serial Number: _____________________________________________________

__________________ (3) Wiring Diagram Numbers (from unit control panel): — schematic(s) _____________________________________________________

__________________ _____________________________________________________

__________________ — connection(s) _____________________________________________________

__________________ _____________________________________________________

__________________

Table 11. Sample maintenance log

Refrigerant Circuit #1 Refrigerant Circuit #2

Current

Date

Ambient temp F/C

RT-SVX33E-EN 37

Compr. Oil Level

Suction Pressure Psig/kPa

Dischcharge Pressure Psig/kpa

Super heat F/C

Sub cool F/C

Compr. Oil Level

Suction Pressure Psig/kPa

Dischcharge Pressure Psig/kpa

Super heat F/C

Sub cool F/C

Page 38

Troubleshooting

WARNING

Hazardous Service Procedures!

The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electr ical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. 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. Failure to follow all of the recommended safety warnin gs provided, could result in death or serious injury.

ReliaTel Controls

start the unit. This procedure will allow you to c hec k 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 as sist in verifying proper operation. Make the necessary repairs and proceed to Steps 7 and 8.

7. If no abnormal operating conditions appear in the test mode, exit the test mode by turning the power “Off ” at the main power disconnect switch.

8. Refer to the individual component test procedures if other microelectronic components are suspect.

System Status Checkout Procedure

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”.

To prevent injury or death from electrocution, it is the responsibility of the technician to recogniz e this hazard and use extreme care when performing service procedures with the electrical power energized.

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 presence 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 Checkout Procedure ” 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

“System Status” is ch ec ked 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. BAYSENS110*, and BAYSENS119* all have the remote panel indication feature. The LED descripti ons 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 evaporator fan failure or

Condensate Overflow Switch (COF) failure.

38 RT-SVX33E-EN

Page 39

Troubleshooting

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 troubleshooti ng procedure.

Cooling Failure

1. Cooling and heating set point (slide pot) on the zone sensor has failed. Refer to the “Zone S e nsor 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 & J32 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 switc h has closed, the unit will

not operate (when connected to RTOM), c hec k the fan motor, belts, and proving switch.

2. Clogged filter switch has closed, check the filters.

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

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.

Note: If the Condensate Overflow Switch is closed, the

unit will not operate. Check to make sure the float position is not in a tripped condition and verify an "open" between wires connecting to RTOM J6-1, J6-2.

To use LED’s for quick status information at the unit, purchase a BAYSENS110* 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, (BAYSENS119*), the LED indicators will not function while the BAYSENS110* is connected.

Resetting Cooling and Heating

Simultaneous Heat and Cool Failure

1. Emergency Stop is activated.

Method 2

The second method for determining system statu s is done by chec king 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 T est 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

Lockouts

Cooling Failures and Heating Lockouts are reset in an identical manner. Method 1 explains reset ting the system from the space; Method 2 explains resetting the system at the unit.

Note: Before resetting Cooling Failures and Heating

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 space, 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 t he b uil di ng m an age ment system instructions for more information.

RT-SVX33E-EN 39

Page 40

Troubleshooting

Zone Temperature Sensor (ZTS) Service Indicator

The ZSM SERVICE LED is a generic indicator, that will signal the closing of a Normally Open switc h at an y 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. Th e LE D 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 clos ed, indicating a fan failure, and it will shut the unit operations down.

Condensate Overflow Switch

When the condensate overflow switch is closed, a drain pan overflow condition is indicated and it will shut unit operations down.

Zone Temperature Sensor (ZTS) Tests

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 . Below are some typical indoor temperatures, and corresponding resistive values.

Zone Temperature

50 F° 10.0 C° 19.9 K-Ohms 889 Ohms 55 F° 12.8 C° 17.47 K-Ohms 812 Ohms 60 F° 15.6 C° 15.3 K-Ohms 695 Ohms 65 F° 18.3 C° 13.49 K-Ohms 597 Ohms 70 F° 21.1 C° 11.9 K-Ohms 500 Ohms 75 F° 23.9 C° 10.50 K-Ohms 403 Ohms 80 F° 26.7 C° 9.3 K-Ohms 305 Ohms 85 F° 29.4 C° 8.25 K-Ohms 208 Ohms 90 F° 32.2 C° 7.3 K-Ohms 110 Ohms

Nominal ZTEMP

Resistance

Nominal CSP or HSP Resistance

Test 2: Cooling Set Point (CSP) and Heating Set Point (HSP)

The resistance of these potentiometers are measured between the following ZSM terminals. Refer to the chart above for approxim ate re sistanc es at the given setpoints.

Cool SP = Terminals 2 and 3 Range = 100 to 900 Ohms approximate Heat SP = Terminals 2 and 5 Range = 100 to 900 Ohms approximate

Test 3: System Mode and Fan Selection

The combined resistance of the Mode selection switch and the Fan selection switch can be measured between terminals 2 and 4 on the Zone Sensor. The possible switch combinations are listed on the following page with their corresponding resistance values.

Test 4: LED Indicator Test, (SYS ON, HEAT, COOL & SERVICE)

Method 1

T esting the LED using a meter with diode test function. T est both forward and reverse bias. Forward bias should measure a voltage drop of 1.5 to 2.5 volts, depending on your meter. Reverse bias will show an over Load, or open circuit indication if LED is functional.

Method 2

Testing the LED with an analog Ohmmeter. Connect Ohmmeter across LED in one direction, then reverse the leads for the opposite direction. The LED should have at least 100 times more resistance in reverse direction, as compared with the forward direction. If high resistance in both directions, LED is open. If low in both directions, LE D is shorted.

Method 3

To test LED’ s with ZSM connected to unit, test v oltages at LED terminals on ZSM. A measurement of 32 VDC, across an unlit LED, means the LED has failed.

40 RT-SVX33E-EN

Page 41

Troubleshooting

Note: Measurements should be made from LED common

(ZSM terminal 6 to respective LED terminal). Refer to the Zone Sensor Module (ZSM) Terminal Identification table at the beginning of this section.

Programmable & Digital Zone Sensor Test

Testing Serial Communication Voltage

WARNING

Live Electrical Components!

During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

1 . V erify 24 Vac is present between terminals J6-14 & J6-

11.

2. Disconnect wires from J6-11 and J6-12. Measure the voltage between J6-11 and J6-12; it should be about 32 Vdc.

3. Reconnect wires to terminals J6-1 1 and J6-12. Measure voltage again between J6-1 1 and J6-12, voltage should flash high and low every 0.5 seconds. The voltage on the low end will measure about 19 Vdc, while the voltage on the high end will measure from approximately 24 to 38 Vdc.

4. Verify all modes of operation, by running the unit through all of the steps in the “Test Modes” section discussed in “Unit Start-Up”.

5. After verifying proper unit operation, exit the test mode. Turn the fan on continuo usl y at the ZSM, by pressing the button with the fan symbol. If the fan comes on and runs continuously, the ZSM is good. If you are not able to turn the fan on, the ZSM is defective.

Table 12. System mode and fan selection chart

Resistance

Valves (Ohms)

43.45K

Out of Range

(Short)

Out of Range

(Open)

Zone Sensor

Unit/Fan Mode

Emergency Heat/OnEmergency

INVALID/Short

INVALID/Open

Local Unit

Mode

Heat

Invalid (CV),

Auto (VAV)

Invalid (CV), Off

(VAV)

Local Fan

Mode

Invalid

ReliaTel Refrigeration Module (RTRM) Default Chart

If the RTCI loses input from the building management system, the RTRM will control in the default mode after approximately 15 minutes. If the RTRM loses the Heating and Cooling setpoint input, the RTRM will control in the default mode instantaneously. The temperature sensing thermistor in the Zone Sensor Module is the only component required for the “Default Mode” to operate.

Unit Operation without a Zone Sensor

This procedure is for temporary operation only. The economizer and condenser fan cycling functions are disabled.

WARNING

Hazardous Voltage!

1. Open and Lock the unit disconnect switch.

2. Remove the Outside Air Sensor (OAS) from the condenser section of unit.

3. Use two (2) wire nuts, to individually cap the wires.

4. Locate the RTRM (J6). Connect two (2) wires to terminals J6-1 and 2.

5. Connect the sensor (OAS) using two wire nuts to the two (2) field supplied wires that were connected to terminals 1 and 2 on J6.

Resistance

Valves (Ohms)

2.32K Off/ Auto Off Auto

4.87K Cool/Auto Cool Auto

7.68K Auto/Auto Auto Auto

10.77K Off/On Off On

13.32K Cool/On Cool On

16.13K Auto/On Auto On

19.48K Heat/Auto Heat Auto

27.93K Heat/On Heat On

35.0K

RT-SVX33E-EN 41

Zone Sensor

Unit/Fan Mode

Emergency Heat/

Auto

Local Unit

Emergency

Mode

Heat

Local Fan

Mode

Auto

Page 42

Troubleshooting

Unit Economizer Control (ECA) Troubleshooting

Table 13. Verify economizer status by economizer

actuator (ECA) LED indicator:

OFF: No Power or Failure

ON: Normal, OK to Economize

Slow Flash: Normal, Not OK to Economize

1/2 Second On / 2 Seconds Off:

Fast Flash:

Pulse Flash: 2 Second On / 1/2 Second Off:

1 Flash: Actuator Fault 2 Flashes: CO2 Sensor 3 Flashes: RA Humidity Sensor 4 Flashes: RA Temp Sensor 5 Flashes: OA Quality Sensor 6 Flashes: OA Humidity Sensor 7 Flashes: OA Temp Sensor 8 Flashes: MA Temp Sensor 9 Flashes: RAM Fault

10 Flashes: ROM Fault 11 Flashes: EEPROM Fault

Error Code:

Communications Failure

Error Code:

42 RT-SVX33E-EN

Page 43

Wiring Diagrams

Note: Wiring diagrams can be accessed via e-Library by

entering the diagram number in the literature order number search field or by contacting technical support.

Table 14. Wiring diagrams

Type of Airflow

Constant

Volume

Variable Air

Volume/

Multi-speed

Fans/ Single

Zone Variable

Air Volume

Note: * = Downflow and horizontal airflow

Schematic

Type Voltage

Power 200-575 2313-1479 WS*150-240, 50/60HZ, Heat Pump with or without Electric Heat

Control 200-575

Raceway

Connections

Control Box

Connections

Power 208-575 2313-1483 WS*150-240, 60HZ, Heat Pump with or without Electric Heat

Control 208-575

Raceway

Connections

Control Box

Connections

200-575 2313-1515 WS*150-240, 50/60HZ, Heat Pump, with or without Dehumidification

200-230 2313-1499 WS*150-240, 50/60HZ, Heat Pump, with or without Dehumidification 380-575 2313-1500 WS*150-240, 50/60HZ, Heat Pump, with or without Dehumidification

208-575 2313-1519 WS*150-240, 60HZ, Heat Pump, with or without Dehumidification

208-230 2313-1507 WS*150-240, 60HZ, Heat Pump, with or without Dehumidification 460-575 2313-1508 WS*150-240, 60HZ, Heat Pump, with or without Dehumidification

Diagram

Number Description

2313-1488

2313-1495 WS*150-240, 50/60HZ, with or without Dehumidification, Option Modules

2313-1492

2313-1495 WS*150-240, 60HZ, with or without Dehumidification, Option Modules

WS*150-240, 50/60HZ, Heat Pump with or without Electric Heat, with or without Dehumidification

WS*150-240, 60HZ, Heat Pump with or without Electric Heat, with or without Dehumidification

Table 15. Wiring diagrams for units with High Short Circuit Rating (SCCR)

Type of

airflow

Constant

Volume

Multi-speed

Fans/ Single

Zone Variable

Air Volume

Note: * = Downflow and horizontal airflow

Schematic

Type Voltage

Power 208-575 2313-1578 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

Control

Raceway

Connection

Control Box

Connections

Module

Connections

Power 208-575 2313-1578 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

Control

Raceway

Connection

Control Box

Connections

Module

Connections

208-575 2313-1583 WS*180-300, 60HZ, Heat Pump with or without Electric Heat 208-575 2313-1590 WS*180-300, 60HZ, Heat Pump with or without Electric Heat, Options Modules

208-575 2313-2020 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

208-575 2313-2003 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

208-575 2313-2049 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

208-575 2313-1587 WS*180-300, 60HZ, Heat Pump with or without Electric Heat 208-575 2313-1590 WS*180-300, 60HZ, Heat Pump with or without Electric Heat, Options Modules

208-575 2313-2024 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

208-575 2313-2007 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

208-575 2313-2053 WS*180-300, 60HZ, Heat Pump with or without Electric Heat

Diagram

Number Description

RT-SVX33E-EN 43

Page 44

Warranty

Heat Pump

WSD, WSH (Parts Only) Models Less Than or Equal to 20 Tons for

Commercial Use*

This warranty is extended by Trane, to the origin al purchaser and to any succeeding owner of the real property to which the Heat P ump is originally af fixed, and applies to products purc hased and retained for use within the U.S.A. and Canada. There is no warranty against corrosion, erosion or deterioration.

If any part of your Heat Pump fails because of a manufacturing defect within one year from initial start-u p or 18 months from date of shipment - whichever is lesserWarrantor will furnish without charge the required replacement part.

In addition, if the sealed motor-compressor fails because of a manufacturing defect within the second throug h fifth year from the date of original purchase, Warrantor will furnish without charge the required replacement compressor. Warrantor’ s obligations and liabilities under this warranty are limited to furnishing F.O.B. Warrantor factory or warehouse replacement parts for Warrantor ’s products covered under this warranty. W arrantor shall not be obligated to pay for the cost of lost refrigerant. No liability shall attach to W ar rantor until products have been paid for and then liability shall be limited solely to the purchase price of the equipment un der warranty shown to be defective.

THE WARRAN TY AND LIABILITY SET FOR TH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES AND LIABILITIES, WHETHER IN CONTRACT OR IN NE G LIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN FACT, INCLUDING IMPLIED WARRANTIES OF MERCHANT ABILITY AND FITNESS FOR PARTICULAR USE, AND IN NO EVENT SHALL WARRANTOR BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states do not allow limitations on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Trane 2701 Wilma Rudolph Blvd. Clarksville, TN 37040-1008 Attention: Manager, Product Service GW-604-4800

* This warranty is for commercial usage of said equipment and not applicable when the equipment is used for a residential application. Commercial use is any application where the end purchaser uses the product for other than personal, family or household purposes.

*A 5 year limited warranty is provided for the optional Low Leak Economizer, when combined with the optional FDD (Fault Detection & Diagnostics) option.

The manufacturer optimizes the performance of homes and buildings around th e world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments, the manufacturer offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.IRCO.com.

The manufacturer 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 that reduce waste.

Trane Voyager WS 150-24, Voyager WS*150, Voyager WS*155, Voyager WS*180, Voyager WS*200 Installation, Operation And Maintenance Manual

Trane Voyager WS 150-24, Voyager WS150, Voyager WS155, Voyager WS180, Voyager WS200 Installation, Operation And Maintenance Manual