Trane IntelliPak SXHG 90 Series Installation Operation & Maintenance

Commercial single-zone rooftop air conditioners with cv or vav controls

Hide thumbs

Table Of Contents

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

page of 176

/ 176
Contents
Table of Contents
Bookmarks

Table of Contents

Quick Links

Installation

Operation

Maintenance

IntelliPak™

Commercial Single-Zone Rooftop Air

Conditioners with CV or VAV Controls

Models

"H" and later Design Sequence

SAHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75

SEHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75

SFHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75

SLHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75

SSHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75

SXHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75

"2" and later Design Sequence

SXHG -*90, -*11, -*12, -*13

SFHG -*90, -*11, -*12, -*13

SEHG -*90, -*11, -*12, -*13

SLHG -*90, -*11, -*12, -*13

*indicates C, D or F

March 2009

RT-SVX10H-EN

Table of Contents

Need help?

Do you have a question about the IntelliPak SXHG 90 Series and is the answer not in the manual?

Questions and answers

Summary of Contents for Trane IntelliPak SXHG 90 Series

Page 1 Installation Operation Maintenance IntelliPak™ Commercial Single-Zone Rooftop Air Conditioners with CV or VAV Controls Models "H" and later Design Sequence SAHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75 SEHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75 SFHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75 SLHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75 SSHF -*20, -*25, -*30, -*40, -*50, -*55, -*60, -*70, -*75...
Page 2: Warnings, Cautions And Notices
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.
Page 3: Compressor Nameplate
Warnings, Cautions and Notices Compressor Nameplate The Nameplate for the Scroll Compressor is located on the compressor lower housing. Literature Change History RT-SVX10H-EN (March 2009) Updated issue of manual to include BACNet® Communication Interface (BCI) module. RT-SVX10G-EN (November 2008) Re-issue of manual to add options to S_HFF models with “F” and later design sequence. RT-SVX10F-EN (February 2008) Re-issue of manual to add optional R-407C Refrigerant for S_HFF models with “A”...
Page 4: Precautionary Measures
Warnings, Cautions and Notices with “Y” and later design sequence with constant volume (CV) or variable air volume (VAV) controls. RT-SVX10B-EN (October 2003) Updated issue of this manual; provides specific installation, operation and maintenance instructions for S_HF with “6” and later design sequence and S_HG with “Y” and later design sequence with constant volume (CV) or variable air volume (VAV) controls.
Page 5: First Aid Measures
Warnings, Cautions and Notices 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. Overview of Manual This booklet describes proper installation, start-up, operation, and maintenance procedures for 20 through 130 Ton rooftop air conditioners designed for Constant Volume (CV) and Variable Air Volume (VAV) applications.
Page 6: Storage
Note: Do not use the unit's heater for temporary heat without first completing the startup procedure detailed under "Starting the Unit". Trane will not assume any responsibility for equipment damage resulting from condensate accumulation on the unit's electrical and/or mechanical components.
Page 7: Table Of Contents
Unit Clearances ..........30 Trane Roof Curb and Ductwork ....... . . 39 Pitch Pocket Location .
Page 8 O/A Sensor & Tubing Installation ....... 51 Gas Heat Units (SFH_) ......... 53 Flue Assembly Installation .
Page 9 Maintenance ............154 Fan Belt Adjustment .
Page 10: Model Number Description
Model Number Description S F H F F55 F H A 5 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 W = 100% Return 7.5 HP w/o Statitrac Note: When the second digit calls for "E"...
Page 11 31 N = Ventilation Override Module 32 R = Extended Grease Lines 33 T = Access Doors 34 V = Inter-Processor Communication Bridge 35 Y = Trane Communication Interface (TCI) Module 35 7 = Trane LonTalk Communication Interface (LCI) Module M = Trane BACnet Communication...
Page 12 Model Number Description S X H G D14 4 O A 1 2 3 4 567 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 DIGIT 11 - EXHAUST OPTION VFD w/o Bypass DIGIT 1 - UNIT TYPE...
Page 13 Ventilation Override Module 31 R Extended Grease Lines 32 T Access Doors 33 V Inter-Processor Communication Bridge 34 Y Trane Communication Interface (TCI) Module 34 7 Trane LonTalk Communication Interface (LCI) Module 35 0 None 36 6 Factory-Powered 15A GFI...
Page 14: General Information
General Information Commonly Used Acronyms For convenience, a number of acronyms and abbreviations are used throughout this manual. These acronyms are alphabetically listed and defined below. BAS = Building automation systems BCI = BACnet® Communication Interface module CFM = Cubic-feet-per-minute CKT.
Page 15: Unit Description
An optional roof curb, specifically designed for the S_HF and S_HG units is available from Trane. The roof curb kit must be field assembled and installed according to the latest edition of the curb installation guide.
Page 16: Compressor Module
General Information Table 2. RTM Resistance Value vs. System Operating Mode Resistance applied to RTM MODE input Terminals (Ohms) Max. Tolerance Constant Volume Units Fan Mode System Mode 2320 Auto 4870 Auto Cool 7680 Auto Auto 10770 13320 Cool 16130 Auto 19480 Auto...
Page 17: Trane Communications Interface Module
The Trane Communication Interface module expands communications from the unit UCM network to a Trane Tracer 100TM or a Tracer Summit system and allows external setpoint adjustment and monitoring of status and diagnostics. DIP Switch settings on the TCI module for these applications should be: Tracer 100 (Comm3): Switches 1, 2, and 3 are "Off";...
Page 18: Generic Building Automation System Module
Sensor Sequence of Operation" section for VCM operation. Figure 2. Velocity Pressure Transducer/Solenoid Assembly Generic Building Automation System Module (GBAS - Optional 1U51 used with non-Trane building control systems); 0-5 or 0-10 vdc The Generic Building Automation System (GBAS) module allows a non-Trane building control system to communicate with the rooftop unit and accepts external setpoints in form of analog inputs for cooling, heating, supply air pressure, and a binary Input for demand limit.
Page 19: Multipurpose Module
General Information Multipurpose Module The Multipurpose Module (MPM) receives information from the Return Plenum Pressure sensor and provides for Return Fan control to maintain this pressure to the Active Return Plenum Pressure Setpoint and Deadband. Input Devices & System Functions The descriptions of the following basic Input Devices used within the UCM network are to acquaint the operator with their function as they interface with the various modules.
Page 20 General Information dampers (if equipped) are "closed", economizer dampers (if equipped) are "closed", and a manual reset diagnostic is initiated. 3S69 is a binary input device used on all rooftop units equipped with an exhaust/return fan. It is located in the exhaust/return fan section of the unit and is connected to the RTM (1U48). During a request for fan operation, if the differential switch is detected to be open for 40 consecutive seconds, the economizer is closed to the minimum position setpoint, the request for exhaust/return fan operation is turned "Off"...
Page 21 General Information above the "lower limit" of the control band, the Compressor Module (SCM/MCM) starts sequencing condenser fans "On". If the operating fans can not bring the condensing temperature to within the control band, more fans are turned on. As the saturated condensing temperature approaches the lower limit of the control band, fans are sequenced "Off".
Page 22 General Information Space Pressure Transducer (3U62) This is an analog input device used on CV & VAV applications with the Statitrac option. It modulates the exhaust dampers to keep the space pressure within the building to a customer designated control band. It is mounted in the filter section just above the exhaust damper actuator and is connected to the ECEM (1U52).
Page 23: Constant Volume (Cv) Units
"Freezestat" diagnostic to the Human Interface. High Duct Temp Thermostats (Optional 3S16, 3S17) These are binary input devices used on CV & VAV applications with a Trane Communication Interface Module (TCI). They provide "high limit" shutdown of the unit and requires a manual reset.
Page 24: Variable Air Volume (Vav) Units
General Information setpoint deadband. The supply fan will be requested to operate any time there is a requested for heat. On gas heat units, the fan will continue to run for 60 seconds after the furnace is turned off. Supply Air Tempering On CV units equipped with staged heat, if the supply air temperature falls 10°F below the occupied heating setpoint temperature while the heater is "Off", the first stage of heat will be turned "On".
Page 25: Space Temperature Averaging
General Information Figure 4. Unit Component Layout and "Ship with" Locations Space Temperature Averaging Space temperature averaging for Constant Volume applications is accomplished by wiring a number of remote sensors in a series/parallel circuit. The fewest number of sensors required to accomplish space temperature averaging is four. The Space Temperature Averaging with Multiple Sensors figure illustrates a single sensor circuit (Single Zone), four sensors wired in a series/parallel circuit (Four Zone), nine sensors wired in a series/parallel circuit (Nine Zone).
Page 26 General Information Figure 5. Space temperature averaging Space Temperature Averaging with Multiple Sensors Unit Control Modules (UCM) Unit control modules are microelectronic circuit boards designed to perform specific unit functions. These modules through Proportional/Integral control algorithms provide the best possible comfort level for the customer. They are mounted in the control panel and are factory wired to their respective internal components.
Page 27 General Information Figure 6. Control module locations for S_HF 20 and 25 ton units Figure 7. Control module locations for S_HF 30 ton units RT-SVX10H-EN...
Page 28 General Information Figure 8. Control module locations for S_HF 40, 60, 70 and 75 ton units Figure 9. Control module locations for S_HF 50 and 55 ton units RT-SVX10H-EN...
Page 29 General Information Figure 10. Control module locations for S_HG 90 - 130 ton units Bracket 1U48 Bracket GBAS MOD 1U51 Mounting Plate Bracket 1U53 J1-1 1TB9 J1-1 Bracket J2-1 Bracket ECEM J2-1 1U49 1U52 Mounting Plate Bracket Heat MOD 1PCB MOD J1-1 1U55 1U50...
Page 30: Installation
Installation Unit Clearances Figure 11 illustrates the minimum operating and service clearances for either a single or multiple unit installation. These clearances are the minimum distances necessary to assure adequate serviceability, cataloged unit capacity, and peak operating efficiency. Providing less than the recommended clearances may result in condenser coil starvation, "short- circuiting"...
Page 31 Installation Figure 11. Minimum operation and service clearances for single and multiple unit installation RT-SVX10H-EN...
Page 32 Installation Figure 12. SAHF cooling-only units (20 - 75) Use Table Table 5 Table 6 Table 4. Unit dimensional data Unit Size Dimensions 20 & 25 Ton 24'-1 3/8" 5'-3 1/8" 7'-6 1/2" 5'-8 15/16" 3'-9 5/16" 13'-3" 1" 7" '1'-3 1/2"...
Page 33 Installation Table 5. Unit base dimensional data Dimensions w/exhaust w/return exhaust return w/exhaust w/return Unit Size 20 - 30 Ton 14'-0 1/4" 2'-2 1/2" 11 3/4" 5'-7" 3'-4 3/8" 2'-9 15/16" 5 13/16" 28 5/8” 6'-6 15/16" 40 - 55 Ton 16'-7 13/16"...
Page 34 Installation Figure 13. SEHF, SFHF, SLHF, SSHF, SXHF units (20 - 75 ton) Use Table Table 8 Table Table 7. Unit dimensional data Unit Dimensions Unit Size 20 & 25 Ton 24'-1 3/8" 5'-3 1/8" 7'-6 1/2" 5'-8 15/16" 3'-9 5/16" 13'-3"...
Page 35 Installation Table 7. Unit dimensional data Unit Dimensions Unit Size 70 & 75 Ton 30'-2 1/2" 6'-1 5/8" 9'-8" 6'-7 3/8" 5'-9 5/16" 15'-11 1/8" 1" 1'-4" 19'-7" 8 1/8" 6 1/4" 9" Note Note: 19'-6" for SFHF "High Heat" units or 20'-3" for SFHF "Low Heat" units. Table 8.
Page 36 Installation Figure 14. S_HG cooling and heating units (90 - 130 ton) (See CPVC Dimensional Table) RT-SVX10H-EN...
Page 37 Installation Table 11. Center of gravity data Units with 100% Units without Units with Supply & Exhaust/Return Fan Exhaust/Return Fan Exhaust/Return VFD Unit Model Unit Size Dim. A Dim. B Dim. A Dim B. Dim. A Dim. B 12' 6" 3' 8"...
Page 38 Installation Figure 15. Center of gravity data Table 12. Typical unit and curb weights Roof Curb Max. Weight Typical Unit Operating Weight SE,SL, Unit SAHF SFHF SXHF SEHG SFHG SXHG SAHF S*HF/G Size SSHF 4360 4690 4970 4580 4520 4860 5130 4750 5220...
Page 39: Trane Roof Curb And Ductwork
4. Insure that the curb is level and square. The top surface of the curb must be true to assure an adequate curb-to-unit seal. Step-by-step curb assembly and installation instructions ship with each Trane accessory roof curb kit. Follow the instructions carefully to assure proper fit-up when the unit is set into place.
Page 40: If A Trane Curb Accessory Kit Is Not Used
Note: Trane roof curbs are recommended. If using a non-Trane roof curb with right-angle return airflow approaches to a return fan inlet, a rigid, solid flow baffle wall should be installed...
Page 41: Unit Rigging & Placement
Installation Figure 17. Solid flow baffle wall installation for non-Trane roof curbs Return Fan Roof Curb Flow Baffle Return Airflow Return Airflow Duct Unit Rigging & Placement WARNING Heavy Objects! Do not use cables (chains or slings) except as shown. Each of the cables (chains or slings) used to lift the unit must be capable of supporting the entire weight of the unit.
Page 42: General Unit Requirements
Installation Figure 18. Unit rigging Figure 19. Typical unit base and roof curb cross section General Unit Requirements The checklist listed below is a summary of the steps required to successfully install a Commercial rooftop unit. This checklist is intended to acquaint the installing personnel with what is required RT-SVX10H-EN...
Page 43: Main Electrical Power Requirements
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 Trane office. • Verify that the installation location of the unit will provide the required clearance for proper operation.
Page 44: Requirements For Gas Heat
Installation SEHF Units w/200V or 230V Electric Heat: (Requires Separate Power Supply to Heater) • Connect properly sized and protected power supply wiring for the electric heat from a dedicated, field- supplied/installed disconnect to terminal block 4TB2, or to an optional unit mounted disconnect switch 4S15.
Page 45: Condensate Drain Connections
Installation Figure 20. Condensate drain locations Condensate Drain Connections Each S_HF unit is provided with four 1" evaporator condensate drain connections (two on each side of the unit). Each S_HG unit is provided with four 1-1/4" evaporator drain connections (two on each side of the unit.) Due to the size of these units, all condensate drain connection must be connected to the evaporator drain connections.
Page 46: Shipping Fasteners
Installation Figure 21. Condensate trap installation Shipping Fasteners Removing Compressor Assembly Shipping Hardware (20 through 60 Ton) Each manifolded compressor assembly is rigidly bolted to a mounting rail assembly. The rail assembly sets on four (4) rubber isolators. The assembly is held in place by two shipping braces that secure each compressor rail assembly to the unit's base rail.
Page 47 Installation 1. At each "Tiedown" location (6), remove and discard the tiedown bolt and the slotted shipping spacer located between the compressor rails and the unit base rail illustrated in Figure "Tiedown Bolt" detail. 2. Remove the bolt in each rubber isolator and the slotted shipping spacer located between the compressor rails and the unit base rail illustrated in Figure 24, "Isolator Bolt"...
Page 48: Spring Isolators
Installation Figure 24. Removing scroll compressor shipping hardware for 115 and 130 ton units Removing Supply and Exhaust/Return Fan Shipping Channels (Motors >5Hp) Each supply fan assembly and exhaust fan assembly for S_HF units shipped with a motor larger than 5 HP is equipped with rubber isolators (as standard) or optional spring isolators. Each return fan assembly for S_HF units shipped with a motor larger than 5 HP is equipped with spring isolators.
Page 49 Installation Figure 25. Removing supply and exhaust fan assembly shipping hardware (20-75 Ton) Figure 26. Removing return fan assembly shipping hardware (20-75 Ton) RT-SVX10H-EN...
Page 50 Installation Figure 27. Removing supply and exhaust fan assembly shipping hardware (90-130 Ton) RT-SVX10H-EN...
Page 51: O/A Sensor & Tubing Installation
Installation O/A Sensor & Tubing Installation An Outside Air Pressure Sensor is shipped with all units designed to operate on variable air volume applications, units equipped with a return fan, or constant volume units with 100% modulating exhaust w/Statitrac. On VAV systems, a duct pressure transducer (3U60) and the outside air sensor is used to control the discharge duct static pressure to within a customer-specified parameter.
Page 52 Installation Figure 28. Pressure Sensing Outside Air Sensing Kit Duct, Space and Return Plenum Pressure Transducer Tubing Schematic Return Plenum Transducer Sensing Tube to Return Plenum Duct and Space Static Pressure Return Fan Plenum Pressure Control Component Layout Control Component Layout If equipped with Return Fan and Statitrac, Statitrac Static Reference Tubing Connects here...
Page 53: Gas Heat Units (Sfh_)
Installation Gas Heat Units (SFH_) All internal gas piping is factory-installed and pressure leak-tested before shipment. Once the unit is set into place, the gas supply line must be field-connected to the elbow located inside the gas heat control compartments. WARNING Hazardous Gases and Flammable Vapors! Exposure to hazardous gases from fuel substances have been shown to cause cancer, birth...
Page 54 Installation 9. Check the supply pressure before connecting it to the unit to prevent possible gas valve damage and the unsafe operating conditions that will result. Note: Do not rely on the gas train shutoff valves to isolate the unit while conducting gas pressure/ leak test.
Page 55 Installation Table 16. Gas heating capacity altitude correction factors Altitude (Ft.) Sea Level - 2000 2001 - 2500 2501 - 3500 3501 - 4500 4501 - 5500 5501 - 6500 6501 - 7500 Capacity 1.00 Multiplier Note: Correction factors are per AGA Std. 221.30 - 1964, Part VI, 6.12. Local codes may supersede. Notes: 1.
Page 56 Installation Figure 31. Unit gas trains (natural gas) 1000 MBH Figure 32. Modulating 500 - 1000 MBH Pilot Shutoff Valve Pilot Shutoff Valve Burner Nozzle Burner Nozzle Pilot Solenoid Valve Pilot Solenoid Valve Pilot Regulator Valve Pilot Regulator Valve Pilot Shutoff Valve Pilot Shutoff Valve Modulating Gas Valve Modulating Gas Valve...
Page 57: Flue Assembly Installation
Installation Flue Assembly Installation 1. Locate the flue assembly and the extension (refer to Figure 33 for extension usage) in the shipwith section of the unit. 2. Install the flue extension onto the flue assembly as shown in Figure 3. Slide the pipe clamp onto the heater flue tube located inside the heater compartment. 4.
Page 58: Steam Heat Units (Ssh_)
Installation 2. Use swing joints or flexible connectors adjacent to the heating coil. (These devices will absorb the strains of expansion and contraction). 3. All return lines and fittings must be equal to the diameter of the "outlet" connection on the hot water coil.
Page 59 Installation Note: The valve actuators are not waterproof. Failure to protect the valve from moisture may result in the loss of heating control. 1. Support all field-installed piping independently from the heating coil. 2. Use swing joints or flexible connectors adjacent to the heating coil. (These devices will absorb the strains of expansion and contraction.) 3.
Page 60 Installation Figure 34. Hot water piping (20 - 75 ton) Figure 35. Hot water piping (90 - 130 ton) RT-SVX10H-EN...
Page 61 Installation Figure 36. Steam coil piping (20 - 30 ton) Figure 37. Steam coil piping (40 - 130 ton) RT-SVX10H-EN...
Page 62: Disconnect Switch External Handle
Installation Disconnect Switch External Handle (Factory Mounted Option) Units ordered with the factory mounted disconnect switch comes equipped with an externally mounted handle. This allows the operator to disconnect power from the unit without having to open the control panel door. The handle locations and its three positions are shown below; "ON"...
Page 63: Use Copper Conductors Only
Installation 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.
Page 64 Installation non-fused disconnect switch 1S14, inside the unit control panel. 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. Figure 39. Typical field power wiring (20 - 75 ton) RT-SVX10H-EN...
Page 65 Installation Figure 40. Typical field power wiring (90 - 130 ton) RT-SVX10H-EN...
Page 66 Installation Figure 41. Customer connection wire range Table 18. Electrical service sizing data (20 - 130 ton) 200/60/3, Nominal 230/60/3, Nominal 460/60/3, Nominal 575/60/3, Nominal (180-220V Utiliz.) (207-253V Utiliz.) (414-506V Utiliz.) (517-633V Utiliz.) Compressor Designator RLA (ea) LRA (ea) RLA(ea) LRA (ea) RLA (ea) LRA (ea) RLA (ea) LRA (ea) 20 Ton A &...
Page 67 Installation Table 18. Electrical service sizing data (20 - 130 ton) (continued) 200/60/3, Nominal 230/60/3, Nominal 460/60/3, Nominal 575/60/3, Nominal (180-220V Utiliz.) (207-253V Utiliz.) (414-506V Utiliz.) (517-633V Utiliz.) 130 Ton 1,2A,B,C,D 62.8 62.8 27.3 21.8 Condenser Fans: Total FLA (1) Total FLA (1) Total FLA (1) Total FLA (1)
Page 68 Installation Table 19. Electrical service sizing data (20 - 130 ton) 200/60/3, 230/60/3, 460/60/3, Nominal(180- Nominal (207- Nominal (414- 575/60/3, Nominal Unit Component(s) 220V Utiliz.) 253V Utiliz.) 506V Utiliz.) (517-633V Utiliz.) 90 Kw 249.8 216.5 108.3 86.6 110 Kw 305.3 264.6 132.3 105.9...
Page 69 Installation Load Definitions: LOAD 1 = CURRENT OF THE LARGEST MOTOR (COMPRESSOR OR FAN MOTOR) LOAD 2 = SUM OF THE CURRENTS OF ALL REMAINING MOTORS LOAD 3 = CURRENT OF ELECTRIC HEATERS LOAD 4 = ANY OTHER LOAD RATED AT 1 AMP OR MORE CONTROL POWER TRANSFORMER FOR ALL MODES 20 - 40 Ton Units, add 3 FL Amps 50 - 75 Ton Units, add 6 FL Amps...
Page 70: Field Installed Control Wiring
Installation Note: If selected MOP is less than the MCA, then select the lowest standard maximum fuse size which is equal to or larger than the MCA, provided the selected fuse size does not exceed 800 amps. RDE = (1.5 x LOAD 1) + LOAD 2 + LOAD 3 + LOAD 4 The selected RDE value will be the larger of the cooling mode RDE value or the heating mode RDE value calculated above.
Page 71: Controls Using 24 Vac
Installation The various field installed control panels, sensors, switches, and contacts discussed in this section require both AC and DC consideration. These diagrams are representative of standard applications and are provided for general reference only. Always refer to the wiring diagram that shipped with the unit for specific electrical schematic and connection information.
Page 72: Constant Volume System Controls
3. Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires. Units equipped with a Trane Communication Interface (TCI), BACnet Communication Interface (BCI), or LonTalk communication Interface (LCI) option which utilizes a serial communication link;...
Page 73 Table 22 for the Temperature vs. Resistance coefficient. Remote Zone Sensor (BAYSENS074*) This electronic analog sensor features single setpoint capability and timed override with override cancellation. It is used with a Trane Integrated Comfort system. Refer to Table 22 for the Temperature vs.
Page 74 Installation External Auto/Stop Switch (5S67) A field supplied single pole single throw switch (5S67) may be used to shut down the unit operation. This switch is a binary input wired to the RTM. When opened, the unit shuts down immediately and can be cancelled by closing the switch. Refer to the appropriate illustrations in Figure 42 Figure 43 for the proper connection terminals in the unit control panel.
Page 75 Installation – Exhaust/Return fan - ON, Exhaust/Return dampers - Open – O/A dampers - Open – Heat - All stages OFF , Modulating Heat output at 0 vdc – Occupied/Unoccupied output - Energized (Unoccupied) – VO Relay - Energized – Pre-heater State - Off (if equipped) 5.
Page 76 Installation – Exhaust/Return Dampers -Open (if equipped) – OA Dampers - Closed – Heat - All heat stages Off (staged gas and elec.), Hydronic – heat & Mod Gas Heat output at 0%. – Occupied/Unoccupied output - De-energized – VO Relay - Energized (with VOM module installed) –...
Page 77 Installation The UCM network relies on various sensors located throughout the system to provide temperature information in the form of an analog input. All of the sensors used have the same temperature vs. resistance co-efficient and are made from Keystone Carbon D97 material with a 1 degree Centigrade tolerance.
Page 78 Temperature vs. Resistance coefficient. Generic Building Automation System (1U51) The Generic Building Automation System (GBAS) module allows a non-Trane building control system to communicate with the rooftop unit and accepts external setpoints in form of analog inputs for cooling, heating, demand limiting, and supply air pressure parameters.
Page 79 Installation Figure 42. Typical field wiring diagram for 20 through 130 ton CV control options RT-SVX10H-EN...
Page 80 Installation Figure 43. Typical ventilation override binary output wiring diagram for 20 through 130 Ton CV control options. Refer to wiring notes on Figure RT-SVX10H-EN...
Page 81 Installation Figure 44. Field Connection Diagram Notes for 20 through 130 Ton CV or VAV Applications RT-SVX10H-EN...
Page 82 Installation Figure 45. Typical field wiring diagram for 20 through 130 ton VAV control option RT-SVX10H-EN...
Page 83 Installation Figure 46. Typical field wiring diagram for 20 through 130 ton VAV control option RT-SVX10H-EN...
Page 84 Installation Figure 47. Typical GBAS analog input wiring diagram for 20 through 130 Ton CV & VAV control options RT-SVX10H-EN...
Page 85 Installation Table 23. GBAS voltage vs. setpoint Setpoint GBA S 0-5vdc GB AS 0-10vdc V alid Range Occ Zon e Co oling Setpo int(CV o nly) 0.5 to 4.5 vd c 0.5 t o 9.5vdc 50 t o 90°F U nocc Zon e Co oling Setpo int 0.5 to 4.5 vd c 0.5 t o 9.5vdc 50 t o 90°F...
Page 86: Unit Start Up
Unit Start Up Cooling Sequence of Operation Time delays are built into the controls to increase reliability and performance by protecting the compressors and maximizing unit efficiency. Sequence of Operation Compressor Crankcase Heaters Each compressor is equipped with a crankcase heater and is controlled by a 600 volt auxiliary switch on the compressor contactor.
Page 87 Unit Start Up Units with Return Fan The return fan is started once the supply fan is verified ON by the supply fan proving function. If equipped, the variable speed return fan is modulated to control return plenum pressure to the Return Plenum Pressure Setpoint and Return Plenum Pressure Deadband.
Page 88: Lead-Lag Operation
Unit Start Up Lead-Lag Operation When Lead-Lag is enabled, each time the system cycles after having stages 1 and 2 "On", "Stage 2" (K11 on SCM or K3 on MCM) and the corresponding condenser fan output "2A" will start first. The compressor module cycles the compressors "On"...
Page 89: Propane Gas
Unit Start Up timing open to the combustion blower relay (4K33) and the 2nd stage solenoid on the gas valve (4L15). The pre-purge time delay relay (4DL5) will initiate another ignition sequence. The combustion blower motor will continue to operate as long as a heating requirement exists and the service switch (4S24) is "On".
Page 90: Furnace
Unit Start Up and pilot ignition sequence to The post purge time delay relay (4DL4) delays the starting of the combustion blower motor by approximately 60 seconds. Once the timing has elapsed, the combustion blower motor will start, closing the combustion air switch (4S25). Energize the control relay (4K31) and the sequence time delay relay (4DL6).
Page 91: Electric Heat Sequence Of Operation
Unit Start Up motor 4B11 continues to run as long as a heating requirement exists and control circuit switch 4S24 is ON.) Once locked out on flame failure, the IC board will not reactivate the ignition/combustion control circuit until it is reset manually. To do this, press the reset button on the front of the IC board case. A set of relay contacts are available for external use for heat fail (Information Only).
Page 92: Hazardous Voltage
Unit Start Up Use the checklist provided below in conjunction with the “General Unit Requirement" checklist” to ensure that the unit is properly installed and ready for operation. Be sure to complete all of the procedures described in this section before starting the unit for the first time. •...
Page 93: Electrical Phasing
Unit Start Up • Check the supply fan belts for proper tension and the fan bearings for sufficient lubrication. If the belts require adjustment, or if the bearings need lubricating, refer to the Service/ Maintenance section of this manual for instructions. •...
Page 94 Unit Start Up 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.
Page 95 Unit Start Up Table 26. Service test guide for component operation COMPONENT COMPONENT CONFIGURATION BEING TESTED Supply Return Exhaust Condenser Heat Stages Compressor Stage Econo Exhaust Unocc Fans Damper Damper Output Relay COMPRESSOR 20 thru 30 Ton A-Off/B-On K10-Off K11-On Closed Closed Closed...
Page 96 Unit Start Up Service test guide for component operation COMPONENT COMPONENT CONFIGURATION BEING TESTED Supply Return Exhaust Condenser Heat Stages Compressor Stage Econo Exhaust Unocc Fans Damper Damper Output Relay CONDENSER FANS 20 Ton A-2B1 A-On/B-Off Closed Closed Closed Default B-2B2 A-Off/B-On Closed...
Page 97 Unit Start Up Service test guide for component operation COMPONENT COMPONENT CONFIGURATION BEING TESTED Supply Return Exhaust Condenser Heat Stages Compressor Stage Econo Exhaust Unocc Fans Damper Damper Output Relay SUPPLY FAN ALL OFF Closed Closed 100% 100% Unocc Open RETURN FAN ALL OFF Closed...
Page 98: Verifying Proper Fan Rotation
Unit Start Up Verifying Proper Fan Rotation 1. Ensure that the "System" selection switch at the remote panel is in the "Off" position and the "Fan" selection switch for constant volume units is in the "Auto" position. (VAV units do not utilize a "Fan"...
Page 99: System Airflow Measurements
Unit Start Up factory mounted disconnect switch 1S14 is ABC as outlined in the "Electrical Phasing" section. If some of the fans are rotating backwards; • Press the STOP key at the Human Interface Module in the unit control panel to stop the fan operation.
Page 100 Unit Start Up Figure 49. Condenser fan location with human interface designator 5. Use Table 26 to program the Supply Fan for operation by scrolling through the displays. 6. Once the configuration for the Fan is complete, press the NEXT key until the LCD displays the “Start test in __Sec.
Page 101: Exhaust Airflow Measurement (Optional With All Units)
Unit Start Up 7. Press the TEST START key to start the test. Remember that the delay designated in step 6 must elapse before the fans will begin to operate. 8. With the system in the SERVICE MODE and the supply fan rotating in the proper direction, measure the amperage at the supply fan contactor 1K16 &...
Page 102: Traqtm Sensor Airflow Measurement
Unit Start Up – Fresh Air dampers (100% Open) – Variable Frequency Drive (100%, if applicable) – RTM Occ/Unocc Output (Default) 5. Once the configuration for the components is complete, press the NEXT key until the LCD displays the “Start test in __Sec. ” screen. Press the + key to designate the delay before the test is to start.
Page 103: Return Plenum Pressure Control (Units Equiped With Return Fan)
Unit Start Up 3. Once the configuration for the components is complete, press the NEXT key until the LCD displays the “Start test in __Sec. ” screen. Press the + key to designate the delay before the test is to start. This service test will begin after the TEST START key is pressed and the delay designated in this step has elapsed.
Page 104: Fan Performance Tables
Unit Start Up Fan Performance Tables Figure 50. 20 & 25 Ton supply fan performance without Inlet Guide Vanes (IGV) S_HF*20 & 25 Ton 1700 RPM Dual 15 X 15 Fans Entrance Losses - without Inlet Guide Vanes 1600 RPM - without Evap Coil 20 HP - without Filters...
Page 105 Unit Start Up Figure 51. 30 Ton supply fan performance without Inlet Guide Vanes (IGV) S_HF*30 Dual 18 X 18 Fans Entrance Losses 1400 R P M - without Inlet Guide Vanes - without Evap Coil - without Filters 1300 R P M - without Return Air Dampers - without Exhaust 25 HP...
Page 106 Unit Start Up Figure 53. 60, 70 and 75 Ton supply fan performance without Inlet Guide Vanes (IGV) 1200 RPM S_HF*60, *70, *75 Dual 22 X 22 Fans 1100 RPM Entrance Losses - without Inlet Guide Vanes - without Evap Coil 50 HP - without Filters 1000 RPM...
Page 107 Unit Start Up Figure 55. Wet Airside Pressure Drop at 0.075 lb/cu.ft. 20 through 60 Ton Standard Evaporator Coil Wet Airside Pressure Drop at 0.075 lb/cu.ft. 20-60 Ton Standard Evaporator Coil 0.09 0.08 0.07 0.06 0.05 4000 5000 6000 7000 8000 9000 10000 10000...
Page 108 Unit Start Up Figure 57. Dry Airside Pressure Drop at 0.075 lb/cu.ft. 70 through 130 Ton Standard Evaporator Coil Wet Airside Pressure Drop at 0.075 lb/cu.ft. 70-130 Ton Ton Standard Evaporator Coil 20000 30000 40000 50000 60000 Unit Airflow, CFM Figure 58.
Page 109 Unit Start Up Figure 59. Wet Airside Pressure Drop at 0.075 lb/cu.ft. 20 through 60 Ton Standard Evaporator Coil (Hi-Cap not available on 115 and 130 Ton units) Wet Airside Pressure Drop at 0.075 lb/cu.ft. 20-105 TON Hi-Cap Evaporator Coil (Hi-Cap Not Available on 115 &...
Page 110 Unit Start Up Figure 61. 20 & 25 Ton supply fan performance with Inlet Guide Vanes (IGV) S_HF*20 & 25 Ton 1700 R P M Entrance Losses - with Inlet Guide Vanes - without Evap Coil 1600 R P M - without Filterts - without Return Air dampers 20 HP...
Page 111 Unit Start Up Figure 63. 40, 50 and 55 Ton supply fan performance with Inlet Guide Vanes (IGV) S_HF*40, *50, *55 Dual 20 X 20 Fans Entrance Losses - with Inlet Guide Vanes 1200 RPM - without Evap Coil - without Filters 40 HP - without Return Air Dampers 30 HP...
Page 112 Unit Start Up Figure 65. 90, 105, 115 and 130 Ton supply fan performance with Inlet Guide Vanes (IGV) 10000 20000 30000 40000 50000 60000 Table 27. 20 - 75 component static pressure drops (inches w.c.) Evaporator Coil Heating System Filters High Econ.
Page 113 Unit Start Up Table 27. 20 - 75 component static pressure drops (inches w.c.) Evaporator Coil Heating System Filters High Econ. Std. Capacity SFHF/G SEHF/G SLHF/G SSHF/G Throwaway Perm Cartridge Std. With Or Std. High Wire Bag & & Roof Without Tons High All KW's Low High Low...
Page 114 Unit Start Up Table 27. 20 - 75 component static pressure drops (inches w.c.) Evaporator Coil Heating System Filters High Econ. Std. Capacity SFHF/G SEHF/G SLHF/G SSHF/G Throwaway Perm Cartridge Std. With Or Std. High Wire Bag & & Roof Without Tons High All KW's Low High Low...
Page 115 Unit Start Up Table 28. Component static pressure drops (in. W.G.)—exhaust damper for return fan Exhaust Damper Return Tons 12000 0.41 16000 0.73 17000 0.82 20000 1.15 22000 1.39 50/55 10000 0.28 14000 0.56 17000 0.75 20000 1.15 24000 1.66 28000 2.26 12000...
Page 116 Unit Start Up Table 29. 20-75 Tons - Modulating 100% exhaust fan performance Negative Static Pressure Nominal 0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000 Tons RPM BHP 4000 0.38 0.75 1.08 1.45 1.87 2.34 2.88 6000 0.74 1.17 1.65 2.22 2.78 8000...
Page 117 Unit Start Up Table 30. 90-130 Tons modulating 100% exhaust fan performance Negative Static Pressure Nominal Std 0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 Tons RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 28000 516 11.42 551 12.41 586 13.70 622 15.25 657 16.71 690 18.16 723 19.90 754 21.74 785 23.60 815 25.45 30000 550 13.94 579 14.86 614 16.25 646 17.72 680 19.45 712 20.93 743 22.54 773 24.41 803 26.38 832 28.36 32000 583 16.82 609 17.68 642 19.12 672 20.58 704 22.34 735 24.12 764 25.67 793 27.42 822 29.41 850 31.50...
Page 118 Unit Start Up Table 31. 20-75 Tons - 50% exhaust fan performance Negative Static Pressure (In. W.G.) Nominal 0.200 0.400 0.600 0.800 1.000 1.200 1.400 Tons RPM BHP RPM BHP RPM BHP RPM BHP 4000 0.29 0.54 0.82 1.07 550 1.30 601 1.56 651 1.87 6000 0.71 0.90...
Page 119 6. Performance data includes cabinet and rain hood effect. Damper pressure drop must be added to the return duct static per Table 28, p. 114 7. Outlined area indicates nonstandard BHP or RPM selections. Contact a local Trane representative for more information. RT-SVX10H-EN...
Page 120 7. Performance data includes cabinet and rain hood effect. Damper pressure drop will have to be added to the return duct static per Table 28, p. 114 8. Outlined area indicates nonstandard BHP or RPM selections. Contact a local Trane representative for more information. RT-SVX10H-EN...
Page 121: Economizer Damper Adjustment
Unit Start Up Table 35. Return Fan Performance—60-75 tons (36.5” fan) Negative Static Pressure Std. 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 12000 1.07 1.59 2.13 2.71 3.31 3.91 4.54 5.20 13000 1.27 1.83 2.40 3.01 3.65 4.29 4.94 5.64 14000 1.49...
Page 122: Hazardous Voltage
Unit Start Up dampers are closed, can overload the supply fan motor and cause building pressurization control problems due to improper CFM being delivered to the space. The fresh air/return air damper linkage is connected to a crank arm with a series of holes that allows the installer or operator to modify the amount of fresh air damper travel in order to match the return static pressure.
Page 123 Unit Start Up 8. With the fresh air dampers fully closed and the supply fan operating at 100% airflow requirements, measure the return static pressure at the location determined in step 1. 9. Press the STOP key at the Human Interface Module in the unit control panel to stop the fan operation.
Page 124 Unit Start Up Table 37. Fresh air damper pressure drop (inches w.c.) (20 and 25 Ton) Units (50 - 55 Ton) Units Damper Position Damper Position 4000 0.03 0.04 0.06 0.13 0.16 0.33 10000 0.03 0.04 0.09 0.18 0.23 0.55 6000 0.03 0.04...
Page 125: Compressor Start-Up (All Systems)
Unit Start Up Figure 66. Fresh air and return air linkage adjustment Top View RETURN AIR FRESH AIR DAMPERS DAMPERS FILTER SECTION Compressor Start-Up (All Systems) 1. Ensure that the "System" selection switch at the remote panel is in the "Off" position. 2.
Page 126 Unit Start Up – Compressor 1B (Off) – Condenser Fans • 40 through 60 Ton – Compressor 1A (On) – Compressor 1B (Off) – Compressor 2A (Off) – Compressor 2B (Off) – Condenser Fans • 70 & 105 Ton – Compressor 1A & 1B (On) –...
Page 127: Refrigerant Charging
Unit Start Up Refrigerant Charging 1. Attach a set of service gauges onto the suction and discharge gauge ports for each circuit. Refer Figure 67 for the various compressor locations. 2. Open the Human Interface access door, located in the unit control panel, and press the SERVICE MODE key to display the first service screen.
Page 128: Compressor Crankcase Heaters
Unit Start Up The scroll compressor uses Trane OIL-42 without substitution. The appropriate oil charge for a 9 and 10 Ton scroll compressor is 8.5 pints. For a 14 and 15 Ton scroll compressor, use 13.8 pints. Compressor Crankcase Heaters 9 and 10 ton scroll compressors have a 100-watt heater installed.
Page 129 Unit Start Up Figure 67. Compressor locations RT-SVX10H-EN...
Page 130: Pressure Curves
Unit Start Up Pressure Curves Note: To Check Operating Pressures • Start the unit and allow the pressures to stabilize. • Measure the outdoor air dry bulb temperature (F) entering the condenser coil. • Measure the discharge and suction pressure (psig) next to the compressor. •...
Page 131 Unit Start Up Figure 70. 25 Ton Hi Eff cond operating pressure curve (all compressors and condenser fans "On") — R-22 refrigerant COOLING PRESSURE CURVE (Based on Indoor Airflow of 400/CFM) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient 65 F OD Ambient...
Page 132 Unit Start Up Figure 72. 30 Ton Hi Eff cond operating pressure curve (all compressors and condenser fans "On") — R-22 refrigerant COOLING PRESSURE CURVE (Based on Indoor Airflow of 400/CFM) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient 65 F OD Ambient...
Page 133 Unit Start Up Figure 74. 50 Ton standard operating pressure curve (all compressors and condenser fans, per ckt, "On")— R-22 refrigerant COOLING CYCLE PRESSURE CURVE (Based on Indoor Airflow of 400 CFM / Ton) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient...
Page 134 Unit Start Up Figure 76. 55 Ton standard operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-22 refrigerant Cooling Cycle Pressure Curve (Based on Indoor Airfow of 400 CFM / Ton) Full Load 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient...
Page 135 Unit Start Up Figure 78. 70 Ton standard operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-22 refrigerant Cooling Cycle Pressure Curve (Based on Indoor Airfow of 400 CFM / Ton) Full Load 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient...
Page 136 Unit Start Up Figure 80. 75 Ton Hi Eff cond operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-22 refrigerant Cooling Cycle Pressure Curve (Based on Indoor Airfow of 400 CFM / Ton) Full Load 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient...
Page 137 Unit Start Up Figure 82. 90 Ton Hi Eff cond operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-22 refrigerant COOLING PRESSURE CURVE (Based on Indoor Airflow of 400/CFM) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient 65 F OD Ambient...
Page 138 Unit Start Up Figure 84. 115 Ton standard operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-22 refrigerant COOLING CYCLE PRESSURE CURVE (Based on Indoor Airflow of 400 CFM / Ton) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient...
Page 139 Unit Start Up Figure 86. 20 Ton Hi Eff operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-407C refrigerant COOLING PRESSURE CURVE (Based on Indoor Airflow of 400/CFM) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient 65 F OD Ambient...
Page 140 Unit Start Up Figure 88. 30 Ton Hi Eff operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-407C refrigerant COOLING PRESSURE CURVE (Based on Indoor Airflow of 400/CFM) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient 65 F OD Ambient...
Page 141 Unit Start Up Figure 90. 50 Ton Hi Eff operating pressure curve (all compressors and condenser fans, per ckt, "On") — R-407C refrigerant COOLING PRESSURE CURVE (Based on Indoor Airflow of 400/CFM) FULL LOAD 105 F OD Ambient 95 F OD Ambient 85 F OD Ambient 75 F OD Ambient 65 F OD Ambient...
Page 142: Thermostatic Expansion Valves
Unit Start Up Thermostatic Expansion Valves The reliability and performance of the refrigeration system is heavily dependent upon proper expansion valve adjustment. Therefore, the importance of maintaining the proper superheat cannot be over emphasized. Accurate measurements of superheat will provide the following information.
Page 143: Low Ambient Dampers
Unit Start Up attached. After securing the sensor to the line, insulate the sensor and line to isolate it from the ambient air. Note: Glass thermometers do not have sufficient contact area to give an accurate reading. 3. Determine the system subcooling by subtracting the actual liquid line temperature (measured in step 2) from the saturated liquid temperature (converted in step 1).
Page 144: Hazardous Voltage
Unit Start Up Inspect the damper blades for proper alignment and operation. Dampers should be in the closed position during the "Off" cycle. If adjustment is required; 1. At the Human Interface, program the actuator for 0% on circuit #1 and/or circuit #2. (The output signal will go to 0.0 VDC.) 2.
Page 145: Gas Furnace Start-Up (Constant Volume & Variable Air Volume Systems)
Unit Start Up before the test is to start. This service test will begin after the TEST START key is pressed and the delay designated in this step has elapsed. Press the ENTER key to confirm this choice. WARNING Rotating Components! During installation, testing, servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components.
Page 146: Combustion Air Adjustment
Unit Start Up – Supply Fan (On) – Inlet Guide Vanes (100% Open, if applicable) – Variable Frequency Drive (100% Output, if applicable) – RTM Occ/Unocc Output (Unoccupied) – Heat Stages 1 & 2 (On) – Turn the 115 volt control circuit switch 4S24 located in the heater control panel to the "On" position.
Page 147 Unit Start Up the adjustment screw location. Turn the screw clockwise to increase the gas pressure or counterclockwise to decrease the gas pressure. Note: Do not adjust the combustion air damper while the furnace is operating at low-fire. 4. Check the carbon dioxide levels after each adjustment. 5.
Page 148: Full Modulating Gas Furnace
Unit Start Up Figure 93. Natural gas combustion curve (ratio of oxygen to carbon dioxide in percent) Curve Fuel 1,000 BTU per cu. ft. of Natural Gas. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Percent Oxygen Figure 94.
Page 149 Unit Start Up signal from the Heat Module is an inverse proportional 5 -10V DC. The higher the voltage signal, the lower the call for heat. The 5 -10V DC. signal controls the angular position of the combustion air damper through a direct coupled damper actuator motor.
Page 150: Limited Modulating Gas Furnace
Unit Start Up is controlled by the settings on the regulator (the plus (+) and minus (-) indications relate to the change in gas flow. 7. Set the air/gas ratio to the desired value using the #1 adjustment screw until the optimum values between (8.0 and 9.5%) are obtained (course setting).
Page 151 Unit Start Up 3. Press the STOP key at the Human Interface Module in the unit control panel to stop the system operation. Figure 95. Modulating gas regulator 1. Adjustment and indication of the air to gas ratio. 2. Adjustment and indication of the bias. 3.
Page 152: Final Unit Checkout
Unit Start Up Figure 96. Typical gas furnace Final Unit Checkout After completing all of the checkout and start-up procedures outlined in the previous sections (i.e., operating the unit in each of its Modes through all available stages of cooling and heating), perform these final checks before leaving the unit: •...
Page 153 Unit Start Up • Turn the 24 volt control circuit switch 1S70 to the "On" position. • At the Human Interface Module, press the "SETUP" key. The LCD screen will display various preset "parameters of operation" based on the unit type, size, and the installed options. Compare the factory preset information to the specified application requirements.
Page 154: Maintenance
Maintenance Table 40. Control settings and time delays Control Description Elec. Designation Contacts Open Contacts Closed Compressor Circuit Breakers S*HF 20 - 60 1CB8 thru 1CB11 Table 41, p. 154 Table 41, p. 154 S*HG 90 - 130 1CB14 thru 1CB17 Table 41, p.
Page 155 Maintenance Table 41. Compressor circuit breakers (1CB8 - 1CB11 and 1CB14 - 1CB17) electrical characteristics 200V 230V 460V 575V Unit Compr. Compr. Must Must Must Must Must Must Must Must Size Desig. Size Hold Trip Hold Trip Hold Trip Hold Trip 1,2C &...
Page 156 Maintenance Table 42. Filter data Panel-Type Bag-Type Cartridge Filters Panel-Type Filters Filters (box-type) Prefilters Size of Unit Model each Qty. Size of each Qty. Size of each Qty. Size of each 12 X 24 X 19 12 X 24 X 12 12 X 24 X 2 S_HF-C20 &...
Page 157 Maintenance Table 45. Refrigerant coil fin data Coil Fins Coil Face Coil Tube Coil Area Tube Model Type Config. Dia. Rows Foot (sq. ft.) Type Evaporator wavy-3B "2 20.30 S*HF-C20 Hi-Cap Evaporator wavy-3B "4 20.30 Condenser wavy-3B 0.375 "3 35.00 smooth Evaporator wavy-3B...
Page 158: Fan Belt Adjustment
Maintenance Fan Belt Adjustment The supply fan belts and optional exhaust fan belts must be inspected periodically to assure proper unit operation. Replacement is necessary if the belts appear frayed or worn. Units with dual belts require a matched set of belts to ensure equal belt length. When removing or installing the new belts, do not stretch them over the sheaves.
Page 159: Scroll Compressor Replacement
Maintenance Note: Actual belt deflection "force" must not exceed the maximum “force” value shown in Figure 7. Recheck the belt tension at least twice during the first 2 to 3 days of operation. Belt tension will decrease rapidly until the new belts are “run in” . Table 46.
Page 160 Anytime a compressor is replaced, the oil for each compressor within the manifolded set must be replaced. The scroll compressor uses Trane OIL-42 without substitution. The appropriate oil charge for a 9 and 10 Ton scroll compressor is 8.5 pints. For a 14 and 15 Ton scroll compressor, use 13.8 pints.
Page 161: Vfd Programming Parameters
Change Data button and then the Up Arrow button. When the desired selection has been made press the OK button. Should replacing the a VFD become necessary, the replacement is not configured with all of Trane's operating parameters. The VFD must be programmed before attempting to operate the unit.
Page 162: Monthly Maintenance
Maintenance e. Press the Up Arrow button to scroll to the Factory Default setting. f. Press the OK button. g. Press the Up Arrow button to scroll to the Setup Copy menu. h. Press the Change Data button. i. Press the Up Arrow button to scroll to the Copy to Setup 1 setting. j.
Page 163: Heating Season
Maintenance • 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. •...
Page 164: Coil Cleaning
Maintenance • Lubricate the supply fan shaft bearings with a lithium based grease. Refer to Table 44, p. 156 for recommended greases. Note: The bearings are manufactured using a special synthetic lithium based grease designed for long life and minimum lube intervals. Too much lubrication in a bearing can be just as harmful as not enough.
Page 165: Refrigerant Coils
Maintenance CAUTION Coil Cleaners! Coil cleaners can damage roofs, surrounding buildings, vehicles, etc. Cleaning substances should be checked to ensure that they will not cause damage to surroundings. Coils and roof (if applicable) should be rinsed thoroughly. Do not spray coil cleaners in windy conditions. Refrigerant Coils To clean refrigerant coils, use a soft brush and a high volume sprayer (either a garden pump-up type or a high-volume pressure sprayer).
Page 166: Final Process
Maintenance Steam or Hot Water Coils To clean a steam or hot water coil, use a soft brush, a steam-cleaning machine, and water. 1. Verify that switches 1S1 and 1S70 are turned "OFF", and that the main unit disconnect is locked open.
Page 167 Maintenance Table 48. Sample maintenance log Refrigerant Circuit #1 Refrigerant Circuit #2 Suct. Disch. Liquid Suct. Disch. Liquid Current Press. Press Press Press. Press Press Ambient Compr. Psig/ Psig/ Psig/ Super- Sub- Compr. Psig/ Psig/ Psig/ Super- Sub-cool Date Temp F/C Oil Level heat F/C cool F/C...
Page 168: Unit Wiring Diagram Numbers
Unit Wiring Diagram Numbers Table 49. Unit Wiring Diagram Numbers Diagram No. Descriptions 2306-8932 Schematic Wiring Diagram, 2 Circuit, 460V/575V, Electric Heat, 20-75 Ton SEHF 2306-8933 Schematic Wiring Diagram, 3 Circuit, 200V/230V/460V/575V, Electric Heat, 20- 75 Ton SEHF 2306-8934 Schematic Wiring Diagram, 6 Circuit, 200V/230V/460V/575V, Electric Heat, 30- 130 Ton SEHF 2306-8935 Schematic Wiring Diagram, 7 Circuit, 200V, Electric Heat, 30-75 Ton SEHF...
Page 169 Unit Wiring Diagram Numbers Table 49. Unit Wiring Diagram Numbers Diagram No. Descriptions 2307-4515 Schematic Wiring Diagram, Rooftop UCM, Power Wires w/ Supply Fan Variable Frequency Drive, 90-130 Ton S_HG 2307-4516 Schematic Wiring Diagram, Rooftop UCM, Power Wires w/ Exhaust Fan Variable Frequency Drive, 90-130 Ton S_HG 2307-4517 Schematic Wiring Diagram, Rooftop UCM, Power Wires w/ Supply and Exhaust...
Page 170 Unit Wiring Diagram Numbers Table 49. Unit Wiring Diagram Numbers Diagram No. Descriptions 2307-4608 Connection Wiring Diagram, Control Box Area 1 30 Ton S_HF 2307-4609 Connection Wiring Diagram, Control Box Area 1 30 Ton S_HF w/Supply Fan Variable Frequency Drive 2307-4610 Connection Wiring Diagram, Control Box Area 1 30 Ton S_HF w/Exh/Ret Fan Variable Frequency Drive...
Page 171 Unit Wiring Diagram Numbers Table 49. Unit Wiring Diagram Numbers Diagram No. Descriptions 2309-3028 Connection Wiring Diagram, Unit Control Module Detail w/ Exhaust/Return Fan Variable Frequency Drive, 20-30 Ton S_HF 2309-3029 Connection Wiring Diagram, Unit Control Module Detail w/ Supply and Exhaust/ Return Fan Variable Frequency Drives, 20-30 Ton S_HF 2309-3030 Connection Wiring Diagram, Unit Control Module Detail, 40-60 Ton S_HF...
Page 172 Unit Wiring Diagram Numbers Table 49. Unit Wiring Diagram Numbers Diagram No. Descriptions 2309-3065 Connection Wiring Diagram, Raceway Wire Devices - Areas 2-3-4 w/ Exhaust/ Return Fan Variable Frequency Drive 70 & 75 Ton S_HF 2309-3066 Connection Wiring Diagram, Raceway Wire Devices - Areas 2-3-4 w/ Supply and Exhaust/Return Fan Variable Frequency Drives, 70 &...
Page 173: Warranty
Warranty COMMERCIAL EQUIPMENT RATED 20 TONS AND LARGER AND RELATED ACCESSORIES PRODUCTS COVERED - This warranty* is extended by Trane Inc. and applies only to commercial equipment rated 20 Tons and larger and related accessories. The Company warrants for a period of 12 months from initial start-up or 18 months from date of...
Page 174 Index Symbols DIP Switch settings 17 hot water piping 57 DIP switch settings 16 Human Interface Module 16 "Gate" type valve 58 discharge pressure 21 "Ship with" Locations 25 DSP control devices 51 Interprocessor Communications Board 16 AC 71 economizer 102 AC Conductors 71 Economizer Damper Acronyms 14...
Page 175 Breakers 20 Supply and exhaust fan VFD programming parameters 160 swing-check vacuum breaker 59 Thermostatic Expansion Valves 127 Trane Communication Interface 23 Trane Communications Interface Module 17 Trane OIL-42 128 Transducer 22 Traq Sensor 87 Two Stage Gas Furnace 88...
Page 176 December 2008 Supersedes RT-SVX10F-EN www.trane.com For more information, contact your local Trane Trane has a policy of continuous product and product data improvement and reserves the right to office or e-mail us at comfort@trane.com change design and specifications without notice.

This manual is also suitable for:

Intellipak sxhg 11 series Intellipak sxhg 12 series Intellipak sxhg 13 series Intellipak sfhg 90 series Intellipak sfhg 11 series Intellipak sfhg 12 series ... Show all

Trane IntelliPak SXHG 90 Series Installation Operation & Maintenance

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Trane IntelliPak SXHG 90 Series

Summary of Contents for Trane IntelliPak SXHG 90 Series

This manual is also suitable for:

Table of Contents