Trane Voyager 12.5 to 25 Tons Installation and Maintenance Manual

Installation, Operation, and Maintenance

Packaged Rooftop Air Conditioners Voyager™

– Heat Pump

12½ – 20 Ton, 60/50 Hz

Model Numbers

WS*150-240

SAFETY WARNING

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

RT-SVX33E-EN

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

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

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

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

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

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

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.

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

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

Unit Dimensions

WITHOUT ECONOMIZER

5' 8" WITH ECONOMIZER

5' 0"

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

RT-SVX33E-EN 11

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.

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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.

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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.

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