Trane VariTrac Dampers Installation and Maintenance Manual
Contents
1. 5 Round Dampers 2 2 eee 5 Table 1 Round bypass dampers 0000 e eee eee eee 5 Table 2 Round zone dampers 2 20 cere eee ee 5 Rectangular Bypass Damper ccc eee eee ees 5 Table 3 Rectangular bypass dampers 02 eee eee eee 5 Rectangular Zone Damper 00 c eee eee 6 Table 4 Rectangular zone dampers eee ee 6 Actuator Specification 0 0 cece eee eee eee 6 Install Bypass Dampers 0occccccccoc nennen nn 6 Bypass Damper Wiring 00 e cee ete 7 Figure 1 Bypass damper installation saasaa saana naana 7 Installation ori ee ater hn Soda hale LUKES GANG die Aone 8 Installing the Communicating Sensor Bypass Control 8 Figure 2 Installing the communicating sensor bypass control 8 Connect the Communicating Sensor Bypass Control Wiring 9 Install the VariTrac Dampers 0 000 cece teens 9 Figure 3 Proper damper mounting positions anana 9 Figure 4 VariTrac damper installation een 10 Connect UCM Wiring 000 cece eee 11 DIP Switch Settings ccc eens 11 Table 5 DIP switch settingS 00 00 cece eee ee 12 Figure 5 Typical VariTrac Zone Changeover Wiring Diagram 13 4 VAV SVN04B EN TRANE General Damper Descriptions amp Actuator Specifications Round Dampers Cylinder 18 gage galvanized rolled and seam welded D2. 3 p 9 Figure 3 Proper damper mounting positions Dampers must always be installed with the drive shaft horizontal Ss TRANE Installation Figure 4 VariTrac damper installation IMPORTANT Mounting screws must be away from damper bend to avoid interference with rotating damper Hard or Flex Duct Attach unit to hard duct using aminimum of four sheet metal screws Hard or Flex Duct Attach flex duct to unit using self locking plastic tie strap Ascrew amp washer can be used to secure the tie strap if required Hard or Flex Duct gt FE Hard or Flex Duct 10 VAV SVN04B EN Attach unit to hard duct using ER A a minimum of four sheet metal screws Ss TRANE Installation Connect UCM Wiring WARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury CAUTION 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 l
3. communication link must have a unique address in order for the CCP to communicate to it Refer to Table 5 p 12 for UCM 4 1 DIP switch settings 11 Ss TRANE Installation Table 5 DIP switch settings UCM Unit Dip 1 Dip 2 Dip 3 Dip 4 Dip 5 Dip 6 1 OFF ON ON ON ON ON 2 ON OFF ON ON ON ON 3 OFF OFF ON ON ON ON 4 ON ON OFF ON ON ON 5 OFF ON OFF ON ON ON 6 ON OFF OFF ON ON ON 7 OFF OFF OFF ON ON ON 8 ON ON ON OFF ON ON 9 OFF ON ON OFF ON ON 10 ON OFF ON OFF ON ON 11 OFF OFF ON OFF ON ON 12 ON ON OFF OFF ON ON 13 OFF ON OFF OFF ON ON 14 ON OFF OFF OFF ON ON 15 OFF OFF OFF OFF ON ON 16 ON ON ON ON OFF ON 17 OFF ON ON ON OFF ON 18 ON OFF ON ON OFF ON 19 OFF OFF ON ON OFF ON 20 ON ON OFF ON OFF ON 21 OFF ON OFF ON OFF ON 22 ON OFF OFF ON OFF ON 23 OFF OFF OFF ON OFF ON 24 ON ON ON OFF OFF ON 33 OFF ON ON ON ON OFF a Bypass damper must always be addressed at 33 12 VAV SVN04B EN VAV SVNO4B EN AA a S terminal not to be used with VariTrane If unit mounted transformer is not provided polarity from unit to unit must be maintained to prevent permanent da
4. AUTION 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 NOTICE Indicates a situation that could result in equipment or property damage only accidents ZA WARNING Personal Protective Equipment PPE Required Installing servicing this unit could result in exposure to electrical mechanical and chemical hazards e Before installing servicing this unit technicians MUST put on all Personal Protective Equipment PPE recommended for the work being undertaken ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE e When working with or around hazardous chemicals ALWAYS refer to appropriate MSDS and OSHA guidelines for information on allowable personal exposure levels proper respiratory protection and handling recommendations e Ifthereisa risk of arc or flash technicians MUST put on all Personal Protective Equipment PPE in accordance with NFPA70E or other country specific requirements for arc flash protection PRIOR to servicing the unit Failure to follow recommendations could result in death or serious injury Z WARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and
5. Sa TRANE Installation Guide Varilrac Dampers N SAFETY WARNING Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment September 2010 VAV SVN04B EN TRANE Warnings Cautions and Notices Warnings Cautions and Notices Note that warnings cautions and notices appear at appropriate intervals throughout this manual Warnings are provided 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 notices indicate a situation that could 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 Indicates a potentially hazardous situation which if not avoided could result in death or serious injury C
6. ally on the top or bottom of a duct Note Each of the three steps below may be found illustrated in Figure 2 p 8 Each step has a corresponding oval in the figure 1 Plug the actuator connector from the BYPS damper onto the master damper UCM socket ACT 2 Iftwo bypass dampers are used connect the actuator plug of the second bypass damper to the spare connector socket pigtailed on the first BYPS damper cable assembly 3 Ifthe cable assembly needs to be extended cut and splice additional wire on the BYPS damper end of the cable Figure 2 Installing the communicating sensor bypass control CLOSE OPEN HOT To NEC Class 2 ACTUATOR 24V Transformer Load 8 VA without actuator IE W HOT BK OPEN R CLOSE SPARE CONNECTOR Mo SIS T Female plug end of bypass ieee settee al al al sensor assembly cable Address DDC UCM J3 Male plug end located on Switch Control Board o DDC UCM control board HABHE e 1 4 snen tmtm ene YEL GRAN 20927202 o alel 020 8080 alalalalal Q ATP ZONEGNDSET A CO2 GND 77 DDC UCM Control Board Napa Shielded Twisted Pair Communications Wiring VAV SVN04B EN Ss TRANE Installation Connect the Communicating Sensor Bypass Control Wiring WARNING Proper Field Wiring and Grounding Required All field wiring MUST be perfo
7. amper Two 22 gage galvanized steel plates locked together with an elastomeric gasket sandwiched between Actuator Internal actuator w synchronous motor and gear reduction is direct coupled to the damper shaft It has a drive time of 60 seconds e Electrical Rating e Power Supply 24 VAC 20 to 30 VAC at 50 60 Hz e Transformer Sizing 2 0 VA maximum at nominal voltage Class 2 Table 1 Round bypass dampers Size Diameter in Length in Shipping Weight 6 17 17 Ibs 8 17 19 Ibs 10 17 20 Ibs 12 17 21 Ibs 14 17 23 Ibs 16 17 25 Ibs Table 2 Round zone dampers Size Diameter in Length in Shipping Weight 6 17 19 Ibs 8 17 21 Ibs 10 17 22 Ibs 12 17 23 Ibs 14 17 25 Ibs 16 17 27 Ibs Rectangular Bypass Damper Sheet Metal Box 22 gage galvanized steel Length 16 Damper Frame 18 gage galvanized steel Damper Blades 18 gage galvanized steel Damper Shaft 1 2 Diam Table 3 Rectangular bypass dampers Size W x H No of Blades Shipping Weight 14x 12 3 16 Ibs 16 x 16 4 21 lbs 20 x 20 4 29 Ibs 30 x 20 4 40 Ibs VAV SVNO4B EN 5 S TRANE General Rectangular Zone Damper Sheet Metal Box 22 gage galvanized steel Length 16 Damper Frame 18 gage galvanized steel Damper Blades 18 gage galvanized steel Crank Bearings Glass filled Nylon Damper Shaft 1 2 Diam Table 4 Rectangular zone dampers Size H x W No of Blades Shipping Weig
8. grounding as described in NEC and your local state electrical codes Failure to follow codes could result in death or serious injury 2010 Trane All rights reserved VAV SVNO4B EN VAV SVNO4B EN S TRANE Warnings Cautions and Notices Overview of Manual Note At least one copy of this document ships with every order and is customer property It must be retained by the unit s maintenance personnel This booklet describes proper installation procedures for delivered air systems By carefully reviewing the information within this manual and following the instructions the risk of improper operation and or component damage will be minimized It is important that periodic maintenance be performed to help assure trouble free operation Should equipment failure occur contact a qualified service organization with qualified experienced HVAC technicians to properly diagnose and repair this equipment General These instructions do not cover all variations in systems nor provide for every possible contingency that may arise at a job site installation Inspection Check carefully for any shipping damage This must be reported to and claims made against the transportation company immediately Any missing parts should be reported to your supplier at once and replaced with authorized parts only S TRANE Table of Contents General cese sucee anne KANAL ERE A Soe ee tad eee eke Bhd eee 5 Damper Descriptions amp Actuator Specifications
9. ht 08 x 12 2 8 Ibs 08 x 14 2 10 Ibs 08 x 16 2 12 Ibs 10x16 2 14 Ibs 10x20 2 16 Ibs 14x18 3 18 Ibs Actuator Specification Actuator Design 3 Wire 18 ga 24 VAC Floating Point Control Non spring return Actuator Housing Housing Type NEMA 1 IP20 Shaft Rotation All damper shafts rotate counter clockwise to open Electrical Rating e Power Supply 24 VAC 20 to 30 VAC at 50 60 Hz e Transformer Sizing 2 5 VA maximum at nominal voltage Class 2 Manual Override External release lever Humidity 90 RH maximum non condensing Temperature Rating e Ambient 35 125 F 2 52 C e Shipping and Storage 20 150 F 29 66 C Torque e Running 35 Ib in 4 N m e Breakaway 35 Ib in 4 N m minimum e Stall 40 Ib in 4 5 N m minimum Running Time for 90 Rotation e 60 seconds at 60 Hz nominal e 72 seconds at 50 Hz nominal Weight 1 5 Ib 0 68 kg Install Bypass Dampers Bypass damper s should be located before the first zone runs out from the supply air duct VariTrac dampers or supply duct branches should be installed downstream of bypass dampers The distance between bypass dampers and the communicating sensor bypass control should be two to three equivalent duct diameters see Figure 1 p 7 6 VAV SVN04B EN S TRANE General In systems with plenum return bypass damper s should be ducted into the return air riser Confirm that sufficient relief or exhaust exists to prevent return plenum pressurization Importa
10. ive electrical components perform these tasks Failure to follow all electrical safety precautions when exposed to live electrical components could result in minor to moderate injury NOTICE Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors could result in equipment damage NOTICE Equipment Damage Connecting a shared UCM power supply with reversed polarity will cause damage to the UCM TCI and central control panel NOTICE Equipment Damage When powering multiple UCMs from one transformer polarity must be maintained Terminal TB1 1 is designated positive and Terminal TB1 2 is negative to unit casing ground Important UCM control box cover must be replaced after field wiring to prevent electromagnetic interference 1 Connect the power to terminals TB1 1 24V and TB1 2 ground 24 Vac is required to power the UCM control 20 Vac to 28 Vac is acceptable Use 18 to 20 AWG for power wiring The power consumption for an auto changeover cooling only UCM model CHGR is 10VA Local heat outputs are rated at 12VA maximum for each output To determine the total UCM power requirements add the power consumption of local heat to the circuit board power DIP Switch Settings VAV SVN04B EN Dip switch SW1 contains six switches for addressing the UCM These switches allow a user to set a unique communication address for each UCM Each UCM on a given
11. mage to control board If one leg of 24VAC supply is grounded then ground leg must be connected to TB1 2 2 Shields of communications wiring should be tied together and insulated Ss TRANE Installation Typical VariTrac Zone Changeover Wiring Diagram Damper C8 To 24V ne Transformer TB1 1 24 VAC TB4 1 BIP EN EN GR NC CONTACT TB1 1 24VAC L5 BK RETURN 781 2 GND NOT CONNECTED OPTIONAL FIELD INSTALLED OCCUPANCY SENSOR uw an O 7 CC TO J11 3RD STG TO J9 MAX COIL HOT TOJB OPTIONAL FIELD INSTALLED ELECTRIC HEATER ELE re Ben ACTUATOR ADDRESS D D CAU C M To se EI eror SWITCH CONTROL BOARD BK CLOSE Tone Vie PARERE TO J10 RIPEN L 1AA MAX OPTIONAL FIELD INSTALLED PROPORTIONAL WATER VALVE ON OFF vn I WATER VALVE TO J8 ANA zl 515 D D C U C M rt ae AT 919 CONTROL BOX 1825 1832 OPTIONAL FIELD INSTALLED ON OFF WATER VALVE SHIELDED J t y t TWISTED PAIR ii ji COMMUNICATIONS Bt Bd 2 1 WIRING AB ZONE SENSOR NOTE REMOTE MTD AENOTEMID 0811 24v j P IG lt 3 5 gt gt IGNI ESS aND ili Factory wiring OPTIONAL FIELD SENSOR our 189 5 A C02 Field wiring INSTALLED CONE SENSOR INSTALLED ZONE SENSOR Optional or alternate wiring OPTIONAL FIELD INSTALLED BER i h CO2 SENSOR 2 1 4 quick connect required for all field connections lt 3 Zone sensor terminals 4 and 5 require shielded twisted pair wiring for comm
12. nt The use of a relief fan or backdraft damper is strongly recommended in the return air system This will prevent bypassed air from pressurizing the return air duct system and spilling out of return grills into conditioned space especially when the unit is in economizer mode Bypass Damper Wiring VAV SVN04B EN WARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury The interconnect cable is pre wired to the bypass damper and may be lengthened if necessary Important Mounting screws must be located towards the ends of the damper when hanging straps are used to avoid interference with the rotating damper A label attached to the dampers indicates the acceptable areas for mounting screws NOTICE Equipment Damage The bypass damper must be positioned to orient the drive shaft horizontally Failure t
13. o do this could result in drive train malfunction see Figure 1 p 7 Important Itis important to note the airflow direction when installing dampers A label for this is present on each damper assembly Figure 1 Bypass damper installation Voyager Micro Control Heating and Cooling Coils Bypass Damper Return Air Duct Ductwork TRANE Installation Installing the Communicating Sensor Bypass Control WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury The communicating sensor bypass control is located between the supply fan and the bypass damper in the least turbulent location possible It is recommended that the distance between the control and the nearest upstream transition be two to three equivalent duct diameters If the supply duct branches out at the riser install the control in the largest supply duct A two inch hole is required to insert the temperature and static pressure sensor Use the supplied gasket to seal off air leaks Secure the sensor to the duct with a minimum of three sheet metal screws Important The sensor assembly should be installed on the side of the duct to keep the pressure transducer in a vertical orientation Do not install horizont
14. rmed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury The pre wired interconnect cable plugs into the actuator connector inside the control box The cable is designed to connect in one orientation only Refer to the VariTrac Changeover Bypass VAV Literature VAV PRC003 EN for information regarding system wiring Install the VariTrac Dampers VAV SVNO4B EN A sketch of basic damper installation is shown in Figure 4 p 10 The damper may be connected with hard duct or flex duct at either end If two bypass dampers are installed a pigtail socket is provided on the cable so the second damper can be plugged into the UCM Important Mounting screws must be located towards the ends of the damper when hanging straps are used to avoid interference with the rotating damper A label attached to the dampers indicates the acceptable areas for mounting screws Important It is important to note airflow direction when installing the damper A label for this is present on each damper assembly NOTICE Equipment Damage The control box on each damper must be positioned to orient the drive shaft horizontally Failure to do this could result in drive train malfunction See Figure
15. unications jack equipped zone sensor option TB3 5 TB3 6 lt 4 No additional wiring required for night setback override on cancel cs lt _5 The optional binary input connects between TB4 1 BIP and 24VAC hot from en transformer The binary input can be reconfigured as an occupancy input via the L6 communications interface OPTIONAL FIELD INSTALLED As shipped the AUX input is configured as an AUX input The AUX input can be AUX TEMP SENSOR reconfigured as a CO2 sensor input via the communications interface 13 S TRANE Trane optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments Trane offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www Trane com Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice 2010 Trane All rights reserved Produced with paper that uses fewer trees and VAV SVNO4B EN 10 Sep 2010 chemicals less energy and environmentally friendly 4 IR Supersedes VAV SVNO4A EN May 2008 print practices that reduce waste NG Ingersoll Rand
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