Trane Odyssey 6 To 25 Tons Installation And Maintenance Manual Split System Air Conditioners , Heat Pump Condenser — 20
2015-04-02
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Installation, Operation, and Maintenance Split System Air Conditioners Odyssey™ ™ Heat Pump Condenser — 6 to 20 Tons (60 Hz) TWA073D***A TWA090D***A TWA120D***A TWA180E***A TWA240E***A (50 Hz) TWA061D***A TWA076D***A TWA101D***A TWA156E***A TWA201E***A S A F E T Y WA R N I N G 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. January 2014 SSP-SVX14C-EN Introduction Read this manual thoroughly before operating or servicing this unit. Warnings, Cautions, and Notices Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions. The three types of advisories are defined as follows: WARNING CAUTION 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 accidents. Important Environmental Concerns Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs such as HCFCs and HFCs. Important Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. 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. ©2014 Trane All rights reserved WA R N I N G Prope r Fi el d Wi ring a nd Groundi ng Required! Fa il u re to f ol lo w c ode c o ul d r es u lt i n de at h or s e r i o u s i n j u r y. All field w ir in g MUST be p er for med b y qualif ied per sonnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION h a z a r d s . To a v o i d t h e s e h a z a r d s , y o u M U S T f o l l o w requirements for field wiring installation and grounding as described in NEC and your local/ state electrical codes. WA R N I N G Pe r s o n a l P r o t e c t i v e E q u i p m e n t ( P P E ) Required! Fa il u re to w ea r pro pe r PPE f or t he j ob b ei ng u n d e rt a k e n c o u l d r e s u l t i n d e a t h o r s e r i o u s i n j u r y. Te ch n i c i a n s , i n o r d e r t o p r o t e c t t h e m s e l v e s f r o m p o t e n t i a l e l e c t r i c a l , m e ch a n i c a l , a n d ch e m i c a l h azards, MUST follow pr ecaut io ns in th is man ual a n d o n t h e t a g s , s t i ck e r s , a n d l a b e l s , a s w e l l a s t h e instructions below: • Before installing/servicing this unit, t e ch n i c i a n s M U ST p u t o n a l l Pe r s o n a l Pr o t e c t i v e E q u i p m e n t ( P P E ) r e c o m m e n d e d f o r t h e w o r k b e i n g u n d e rt a k e n . A LWAY S r e f e r to appropriate MSDS sheets and OSHA guidelines for proper PPE. • When working with or around hazardous ch e m i c a l s , A LWAY S r e f e r t o t h e a p p r o p r i a t e MSDS sheets and OSHA guidelines for in for mat io n on a ll owa bl e pe r s ona l e x pos ur e levels, proper respiratory protection and handling recommendations. • I f t h e r e i s a r i s k o f a r c o r f l a s h , t e ch n i c i a n s M U S T p u t o n a l l Pe r s o n a l P r o t e c t i v e E q u i p m e n t ( P P E ) i n a c c o r d a n c e w i t h N F PA 7 0 E o r o t h e r c o u n t r y- s p e c i f i c r e q u i r e m e n t s for arc flash protection, PRIOR to servicing the unit. SSP-SVX14C-EN Introduction WA R N I N G Re f r i g e r a n t u n de r H i g h Pr e s s u r e ! Fai l ure t o fol l ow i ns tr uc ti on s be l ow c ou ld re s ul t in a n e x p l o s i o n w h i ch c o u l d r e s u l t i n d e a t h o r s e r i o u s injury or equipment damage. Sy s t e m c o n t a i n s o i l a n d r e f r i g e r a n t u n d e r h i g h pre ssu re . Recove r r ef ri ge ra nt to re li e ve pre ssu re befor e op en in g t he system. See u nit namep late for re fri ge ra nt ty pe . Do no t u se non -a pp rove d refrigerants, refrigerant substitutes, or refrigerant additi ves. WA R N I N G R - 4 10 A R e f r i g e r a n t u n d e r H i g h e r Pr e s s u r e t h a n R - 2 2 ! Fai l ure t o us e pr ope r eq ui pm e nt o r c om p on en ts a s de sc ri b ed be l ow, c ou ld re s ul t i n e qu i pme nt fa i li ng a n d p o s s i b l y e x p l o d i n g , w h i ch c o u l d r e s u l t i n d e a t h , s e r i o u s i n j u r y, o r e q u i p m e n t d a m a g e . T h e u n i t s d e s c r i b e d i n t h i s m a n u a l u s e R - 4 10 A r e f r i g e r a n t w h i ch o p e r a t e s a t h i g h e r p r e s s u r e s t h a n R - 2 2 . U s e O N LY R - 4 10 A r a t e d s e r v i c e eq ui pm e nt or c om p one nt s w it h the s e un it s. For s p e c i f i c h a n d l i n g c o n c e r n s w i t h R - 4 10 A , p l e a s e c o n t a c t y o u r l o c a l Tr a n e r e p r e s e n t a t i v e . SSP-SVX14C-EN Copyright This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part, without the written permission of Trane. Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any person of such revision or change. Trademarks All trademarks referenced in this document are the trademarks of their respective owners. Revision History Removed warranty chapter, updated with running edits. 3 Table of Contents Model Number Description . . . . . . . . . . . . . . . . . 6 Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Inspection Checklist . . . . . . . . . . . . . . . . . . . 8 Control Circuit Features . . . . . . . . . . . . . . . . . . Discharge Temperature Limit (DTL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Evaporator Defrost Control (EDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low Pressure Cut-Out (LPCO) . . . . . . . . . High Pressure Cut-Out (HPCO) . . . . . . . . Internal Overload Protector (IOL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Testing for Leaks. . . . . . . . . . . . . . . . . . . . . . . . . . 8 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Lifting Recommendations . . . . . . . . . . . . . . . . . 8 ReliaTel™ Controls . . . . . . . . . . . . . . . . . . . . . . 32 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 32 Functions and Features . . . . . . . . . . . . . . . 32 Heat Pump Condenser . . . . . . . . . . . . . . . . . . . . 6 General Information . . . . . . . . . . . . . . . . . . . . . . . . 7 Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Unit Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . Structural Preparation . . . . . . . . . . . . . . . . . Rooftop Mounting . . . . . . . . . . . . . . . . . . . . Ground Level Mounting . . . . . . . . . . . . . . . 9 9 9 9 Snow Belt Recommendations . . . . . . . . . . . . . 9 Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . 10 Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Heat Pump Condenser . . . . . . . . . . . . . . . . . . . 14 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Refrigerant Piping Guidelines. . . . . . . . . . . . . 15 Refrigerant Piping Procedures (Outdoor Units). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Refrigerant Piping Procedures (Indoor Unit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 31 31 31 31 31 Service Test Modes for ReliaTel™ Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Test Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step Test Mode . . . . . . . . . . . . . . . . . . . . . . Resistance Test Mode . . . . . . . . . . . . . . . . Auto Test Mode . . . . . . . . . . . . . . . . . . . . . . 37 37 37 37 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Troubleshooting ReliaTel™ Controls. . . . . . . 38 System Status Checkout Procedure . . . . . . . 38 Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Resetting Cooling and Heating Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 System Evacuation. . . . . . . . . . . . . . . . . . . 17 Zone Temperature Sensor (ZTS) Service Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Insulating and Isolating Refrigerant Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Temperature Tests . . . . . . . . . . . . . . . . . . . . . . . Test 1 - Zone Temperature Thermistor (ZTEMP). . . . . . . . . . . . . . . . . . Test 2 - Cooling Set Point (CSP) and Heating Set Point (HSP). . . . . . . . . . . . . . . Test 3 - System Mode and Fan Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test 4 - LED Indicator Test (SYS ON, HEAT, & COOL). . . . . . . . . . . . . . . . . . . . . . . Refrigerant Charging Procedure . . . . . . . . . . 18 Liquid Charging . . . . . . . . . . . . . . . . . . . . . . . . . 19 Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . Unit Power Supply . . . . . . . . . . . . . . . . . . . Low Voltage Wiring . . . . . . . . . . . . . . . . . . ReliaTel™ Controls . . . . . . . . . . . . . . . . . . . Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . 20 20 20 20 21 22 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Charging Charts and Superheat . . . . . . . . . . . 26 Installation Checklist. . . . . . . . . . . . . . . . . . . . . . . 30 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . 30 Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 30 Pre-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4 31 40 40 40 40 41 Programmable & Digital Zone Sensor Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Testing Serial Communication Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 RLCI Loss of Communications. . . . . . . . . 41 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Annually (Cooling Season) . . . . . . . . . . . . . . . 42 Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 SSP-SVX14C-EN Ta b l e o f C o n t e n t s Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . 43 Charging Charts and Superheat . . . . . . . . . . . . . . Wiring Diagram Matrix . . . . . . . . . . . . . . . . . . . . 44 Dimensional Data. . . . . . . . . . . . . . . . . . . . . . . . . . . Charging Charts and Superheat . . . . . . . . . . . . . . Charging Charts and Superheat . . . . . . . . . . . . . . SSP-SVX14C-EN 5 Model Number Description Heat Pump Condenser TWA 2 40 E 3 00 * * 123 456 7 8 9 10 11 12 TWA 201 E 3 00 * * 123 456 7 8 9 10 11 12 All products are identified by a multiple-character model number that precisely identifies a particular type of unit. An explanation of the alphanumeric identification code is provided. Its use will enable the owner/operator, installing contractors, and service engineers to define the operation, specific components, and other options for any specific unit. When ordering replacement parts or requesting service, be sure to refer to the specific model number, serial number, and DL number (if applicable) stamped on the unit nameplate. D I G I T S 1 - 3 : Pr o d u c t Ty p e TWA = Split System Heat Pump DIGITS 4 - 6: Nominal Gross Cooling Capacity (MBh) 061 = 5 Tons (50Hz) 076 = 6.25 Tons (50Hz) 101 = 8.33 Tons (50Hz) 156 = 13.0 Tons (50Hz) 201 = 16.7 Tons (50Hz) 090 = 7.5 Tons (60Hz) 120 = 10 Tons (60Hz) 180 = 15 Tons (60Hz) 240 = 20 Tons (60Hz) DIGIT 7: Major Develo pment Seq uence DIGIT 8: Electrical Characteristics 3 = 208–230/60/3 4 = 460/60/3 W = 575/60/3 D = 380-415/50/3 K = 380/60/3 D I G I T S 9 - 10 : F a c t o r y I n s t a l l e d O p t i o n s 00 = Packed Stock 0R = ReliaTel, no LCI Board 0T = ReliaTel, no LCI Board with Black Epoxy Coated Coil 0U = ReliaTel, with LCI Board 0W = ReliaTel, with LCI Board and Black Epoxy Coated Coil HR = Hail Guard with ReliaTel, no LCI Board HT = Hail Guard with ReliaTel, no LCI Board with Black Epoxy Coated Coil HU = Hail Guard with ReliaTel, with LCI Board HW = Hail Guard with ReliaTel, with LCI Board and Black Epoxy Coated Coil D I G I T S 11 : M i n o r D e s i g n S e q u e n c e * = Current Design Sequence1 D I GI TS 12 : Serv i c e D ig it * = Current Design Sequence1 D = Single Compressor, Single Circuit E = Dual Compressor, Dual Circuit 1. 6 * = sequential alpha character SSP-SVX14C-EN General Information This manual 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 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. I m p o rt a n t : All phases of this installation must comply with the NATIONAL, STATE & LOCAL CODES. In addition to local codes, the installation must conform with National Electric Code -ANSI/NFPA NO. 70 LATEST REVISION. Any individual installing, maintaining, or servicing this equipment must be properly trained, licensed and qualified. I m p o rt a n t : Do not remove the VFD without first contacting technical support! For performance-related questions and diagnostic support in North America call 1877-872-6363. Any return requires a claim number FIRST. Removal of the VFD prior to this step will void the unit’s warranties. Installation procedures should be performed in the sequence that they appear in this manual. Do not destroy or remove the manual from the unit. The SSP-SVX14C-EN manual should remain weather-protected with the unit until all installation procedures are complete. N o t e : It is not the intention of this manual to cover all possible variations in systems that may occur or to provide comprehensive information concerning every possible contingency that may be encountered during an installation. If additional information is required or if specific problems arise that are not fully discussed in this manual, contact your local sales office. Use the ”Installation Checklist,” p. 30 provided In this manual to verify that all necessary installation procedures have been completed. Do not use the checklist as a substitute for reading the information contained in the manual. Read the entire manual before beginning installation procedures. Unit Description These condensers come with single and dual compressor options. Single compressor outdoor units feature a single refrigeration circuitry, requiring only one set of refrigerant lines. Dual compressor/dual circuit models give true stand-by protection; if one compressor fails, the second will automatically startup. Also, the first compressor can be serviced without shutting down the unit since the refrigerant circuits are independent. During light load conditions, only one compressor will operate to save energy. 7 Pre-Installation Unit Inspection Inspect material carefully for any shipping damage. If damaged, it must be reported to, and claims made against the transportation company. Compare the information that appears on the unit nameplate with ordering and submittal data to ensure the proper unit was shipped. Available power supply must be compatible with electrical characteristics specified on component nameplates. Replace damaged parts with authorized parts only. Inspection Checklist To protect against loss due to damage incurred in transit, complete the following checklist upon receipt of the unit. Inspect individual pieces of the shipment before accepting the unit. Check for obvious damage to the unit or packing material. Inspect the unit for concealed damage before it is stored and as soon as possible after delivery. Concealed damage must be reported within 15 days. If concealed damage is discovered, stop unpacking the shipment. 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 carrier’s terminal of damage immediately by phone and by mail. Request an immediate joint inspection of the damage by the carrier and the consignee. Notify the sales representative and arrange for repair. Do not repair the unit until the damage is inspected by the carrier’s representative. Testing for Leaks All units are shipped with a holding charge of nitrogen in each circuit and should be leak tested before installation. 1. Remove the access panel. 2. Locate the liquid line or suction line access valve for each circuit. 3. Install gauges to determine if the circuits are still pressurized. If not, the charge has escaped and should be repaired as required to obtain a leak-free circuit. Lifting Recommendations WA R N I N G I m p r o p e r U n i t L i ft ! F a i l u r e t o p r o p e r l y l i ft u n i t c o u l d r e s u l t i n u n i t dropping and possibly crushing operator/ t e ch n i c i a n w h i ch c o u l d r e s u l t i n d e a t h o r s e r i o u s i n j u r y, a n d e q u i p m e n t o r p r o p e rt y- o n l y d a m a g e . Te s t l i ft u n i t a p p r o x i m a t e l y 2 4 i n ch e s t o v e r i f y p r o p e r c e n t e r o f g r a v i t y l i ft p o i n t . To a v o i d d r o p p i n g o f u n i t , r e p o s i t i o n l i ft i n g p o i n t i f u n i t i s not level. N OT I C E Equipment Damage! Use spreader bar s to prevent straps from d a m a g i n g t h e u n i t . I n s t a l l t h e b a r s b e t w e e n l i ft i n g s t r a p s , b o t h u n d e r n e a t h t h e u n i t a n d a b ov e t h e unit to prevent the straps from crushing the unit cabinet or damaging the finish. Before preparing the unit for lifting, estimate the approximate center of gravity for lifting safety. Because of placement of internal components, the unit weight may be unevenly distributed. See ”Weights”, p. 14 for approximate unit weights. The crated unit can be moved using a forklift of suitable capacity. For lifting the unit, attach lifting straps or slings securely to the lifting holes at each corner (see unit drawings in ”Weights”, p. 14). Use spreader bars to protect the unit casing from damage. Test lift the unit to determine proper balance and stability. Clearances Provide enough space around the unit to allow unrestricted access to all service points. Refer to the ”Dimensional Data,” p. 10 for unit dimensions and minimum required service and free air clearances. Observe the following points to ensure proper unit operation. 1. Do not install the unit under a low overhang. Condenser discharge must not be restricted—refer to notes in ”Dimensional Data drawings,” p. 10. I m p o rt a n t : Do not obstruct condenser discharge air. This can result in warm air recirculation through the coil. 2. Do not locate the unit in a position where runoff water can fall into the fan discharge openings. 3. Condenser intake air is supplied from three or four sides of the unit. Adhere to the minimum required clearances given in unit dimensional drawings (see ”Dimensional Data,” p. 10). 8 SSP-SVX14C-EN Pre-Installation Unit Mounting Ground Level Mounting WA R N I N G Mounting Integrity! Fai l ure t o fol l ow i ns tr uc ti on be l ow c ou ld r es ul t i n death or serious injury or possible equipment or p r o p e rt y- o n l y d a m a g e . E n s u r e t h e r o o f s t r u c t u r e s u p p o rt s a r e s t r o n g e n o u g h t o s u p p o rt t h e w e i g h t o f t h e u n i t a n d a n y accessories. Structural Preparation N OT I C E Ro o f D a m a g e ! Sy s t e m c o n t a i n s o i l a n d r e f r i g e r a n t u n d e r h i g h pressu re. Roof s shou ld b e pr otected fro m exposure to oils and refrigerant in the system. If r o o ft o p i s n o t p r o t e c t e d , d a m a g e t o t h e r o o f m a y o c c u r. I m p o rt a n t : Refer to local building codes for proper installation. All installation must comply with local building codes. Rooftop Mounting For ground level installation, the unit base should be adequately supported and hold the unit near level. The installation must meet the guidelines set forth in local codes. The support should extend two inches beyond the unit base channels at all points. The unit and support must be isolated from any adjacent structure to prevent possible noise or vibration problems. Any ground level location must comply with required clearances given in the unit dimensional drawings (see ”Dimensional Data,” p. 10). Snow Belt Recommendations In regions where deep snow is encountered, raise the unit a minimum distance of 8 to 12 inches above the mounting surface. This will reduce the risk of snow blocking the coil and improves runoff of water produced during the defrost cycle. Avoid locating the unit where snow tends to drift. Snow accumulations must be removed from around the unit immediately to prevent drastic efficiency reduction. A snow drift barrier may be constructed around the unit to prevent snow blockage. Clearance between the snow barrier and the unit must comply with the clearances given in ”Dimensional Data drawings,” p. 10. If the unit will be roof mounted, determine for certain that the structure is strong enough to support the unit and any required accessories, see ”Weights”, p. 14. The unit should be elevated on a level, field fabricated fourinch steel or wood 4" x 4" mounting frame. Complete the frame and secure it into position before lifting the unit to the roof. The mounting frame must support a minimum of three of the unit’s four sides and should span roof supports to distribute the load on the roof. Figure 1. Roof mounted unit Ou td o o r Un it Ga s (S u ctio n ) Lin e - In s u la te d Liq u id Lin e In s u la te d Un it Mo u n tin g Ch a n n e ls 6” Ra d iu s Ele va tio n (Mo u n tin g Fra m e ) Ro o f Co n s tru ctio n Ro o f Tru s s in g Ce ilin g SSP-SVX14C-EN 9 Dimensional Data Figure 2. Height, width and depth measurements H H W D 10 D W H - in. (mm) W - in. (mm) D - in. (mm) TWA061, 073, 076, 090 39.125 (993.8) 42.125 (1070) 36 (914.4) TWA101, 120 39.125 (993.8) 52.125 (1324) 40 (1016) TWA156, 180, 201, 240 45.125 (1146.1) 52.125 (1324) 40 (1016) SSP-SVX14C-EN Dimensional Data Figure 3. 5, 6, 6.25, 7.5 ton heat pump, single compressor SEE NOTE 3 NOTES : 1. ACCES S OP ENING IS FOR FIELD INS TALLED BAYLOAM ACCES S ORY. 2. MINIMUM CLEARANCE FOR P ROP ER OP ERATION IS 36" ( 914.4) FROM WALLS , S HRUBBERY, P RIVACY FENCES ETC. MINIMUM CLEARANCE B ETWEEN ADJ ACENT UNITS IS 72" (1828.8). RECOMMENDED S ERVICE C LEARANCE 48" (1219.2) 3. TOP DIS CHARGE AREA S HOULD BE UNRES TRICTED FOR 100" (2540) MINIMUM. UNIT S HOULD BE P LACED S O ROOF RUN-OFF WATER DOES NOT P OUR DIRECTLY ON UNIT 4. OUTDOOR AIR TEMP ERATURE S ENS OR OP ENING (DO NOT BLOCK OP ENING) SERVICE PANEL HAIL GUARD (OP TIONAL) SEE NOTE 4 S ERVICE CLEARANCE 48" (1219.2) (S EE NOTE 2 FOR CLEARANCE) HAIL GUARD (OP TIONAL) 35 15 /16" (912.8 ) WITH HAIL GUARD 33 15 /16" (86 2) LINE VOLTAGE S EE NOTE 1 REFRIGERANT ACCES S CONT ROL WIRING 36 3/8" (923.9) 39 3/16" (995.4) 26 15/16" (684.2) SER VICE P ANEL 29 13/16" (757.2) 14 3/8" (365.1) 8 5/16" 5 5/8" (211.1) (143) 1/16" (1.6) LIQUID LINE 6" (152 .4) 6" (152 .4) 2" (50.8) 21 11 /16" (55 0.9) SUCTION LINE 41 1/16" (1043) 33 13/1 6" (858 .8) 42 1/8" (1070) WITH HAIL GUARD SERVIC E P ANEL S IDE 3" (76. 2) 40 3/4" (1035) 34 3/4" (882.7) 4 3/16" (106.4) 1 13/16" (46) SSP-SVX14C-EN 3 1/16" (77.8) 7/16" (11.1) DIA. IS OLATOR MOUNTING HOLES (OUTS IDE HOLES - 4 P LACES ) BOTTOM OF UNIT 27 11/ 16" (703.3 ) 2 5/16" (58.7) 11 Dimensional Data Figure 4. 8.33, 10 ton heat pump, single compressor SEE NOTE 3 NOTES : 1. ACCES S OP ENING IS FOR FIELD INS TALLED BAYLOAM ACCES S ORY. 2. MINIMUM CLEARANCE FOR P ROP ER OP ERATION IS 36" (914.4) FROM WALLS , S HRUBBERY, P RIVACY FENCES ETC. MINIMUM CLEARANCE BETWEEN ADJ ACENT UNITS IS 72" (1828.8). RECOMMENDED S ERVICE CLEARANCE 48" (1219.2) 3. TOP DIS CHARGE AREA S HOULD BE UNRES TRICTED FOR 100" (2540) MINIMUM. UNIT S HOULD BE P LACED S O ROOF RUN-OFF WATER DOES NOT P OUR DIRECTLY ON UNIT 4. OUTDOOR AIR TEMP ERATURE S ENS OR OP ENING (DO NOT BLOCK OP ENING) SERVICE PANEL SEE NOTE 4 HAIL GUARD (OP TIONAL) S ERVICE CLEARANCE 48" (1219.2) (S EE NOTE 2 FOR CLEARANCE 39 15/16" (1014.4) WITH HAIL GUARD 4 1/4" (108) HAIL GUARD (OP TIONAL) 1 1/4" ( 31.7) LINE VOLTAGE 37 15 /16" (96 3.6) CONTROL WIRING 42 5/16" 35 3/4" (1074.7) (908) 5 9/16" (141.3) S EE NOTE 1 REFRIGERANT ACCES S 44 3/4" (1136.6) S ERVICE P ANEL 32 7/8" (835) 14 5/16" (363.5) 8 1/4" (209.5) 1/16" (1.6) LIQUID LINE 25 11 /16" (65 2.5) 6" (152. 4) 4" (101. 6) 6" (152. 4) 37 11 /16" (95 7.3) SUCTION LINE 4 3/8" (111.1) 1 13/16" (46) 2 7/8" (73) 50 15/16" (1293.8) 51 15/16" (1319.2) WITH HAIL GUARD SERVI CE P ANEL S IDE 3" (76. 2) 7/16" (11.1) DIA. IS OLATOR MOUNTING HOLES (OUTS IDE HOLES - 4 P LACES ) 50 3/4" (1289) 44 3/4" (1136.6) BOTTOM OF UNIT 3 13/16 " (96.8) 2 3/16" (55.6) 12 31 11 /16" (80 5) 1 11/16" (42.9) SSP-SVX14C-EN Dimensional Data Figure 5. 13, 15, 16.7, 20 ton heat pump, dual compressor SEE NOTE 2 NOTES : 1. MINIMUM CLEARANCE FOR P ROP ER OP ERATION IS 36" (914.4) FROM WALLS , S HRUBBERY, P RIVACY FENCES ETC. MINIMUM CLEARANCE B ETWEEN ADJ ACENT UNITS IS 72" (1829). RECOMMENDED S ERVICE C LEARANCE 48" (1219.2) 2. TOP DIS CHARGE AREA S HOULD BE UNRES TRICTED FOR 100" (2540) MINIMUM. UNIT S HOULD BE P LACED S O ROOF RUN-OFF WATER DOES NOT P OUR DIRECTLY ON UNIT 3. OUTDOOR AIR TEMP ERATURE S ENS OR OP ENING (DO NOT BLOCK OP ENING). HAIL GUARD (OP TIONAL) SEE NOTE 3 S ERVICE CLEARANCE 48" (1219.2) (S EE NOTE 1 FOR CLEARANCE) DETAIL A 46" (1168. 4) WITH HAIL GUARD SERVICE PANEL 44 3/16" (1122.4) 95 7/16" (2424.112) WITH HAIL GUARD HAIL GUARD (OP TIONAL) HAIL GUARD (OP TIONAL) 45 1/8" (1146.2) SER VICE P ANEL 1/16" (1.6) 41 3/8" (1051) 9" (228.6) 93 5/16" (2370.1) 25 11/16" (652.5) 9" (228.6) 9 1/4" (235) 6 13/16" (173) 7/16" (11.1) ( DIA. ISOLATOR MOUNTING HOLES (OUTS IDE HOLES - 4 P LACES ) CONTROL WIRING 1 3/16" (30.2) LINE VOLTAGE SERVICE PANEL SIDE REFRIGERANT ACCES S 41 5/8" 39 7/8" (1057.3) (1012.8) BOTTOM OF UNIT 36 7/8" (936.6) 41 1/ 2" (1054 .1) 14 1/2" 14 5/8" 12 5/8" (368.3) (371.5) (320.7) 5 5/8" 4 1/4" (143) (108) SUCTI ON LINES 3" (76. 2) 87" (2210) 93" (2362.2) 2 3/16" 6 13/16" (55.6) (173) LIQUID LINES 15/16" (23.8) 3 11/16" (94) 6 5/16" (160.3) FRO NT DETAIL A DIMENS IONAL DETAIL SSP-SVX14C-EN 13 Weights Heat Pump Condenser Table 1. TWA unit and corner weights — lbs (60 Hz) Tons Model No. Shipping Max (lbs) Net Max (lbs) Corner Weights 1 2 3 4 6 TWA073D 382 328 113 83 56 76 7.5 TWA090D 394 340 117 86 58 79 10 TWA120D 509 438 127 121 72 118 15 TWA180E 898 765 202 192 181 190 20 TWA240E 981 848 254 266 147 181 Table 2. TWA unit and corner weights — lbs (50 Hz) Corner Weights Tons Model No. Shipping Max (lbs) Net Max (lbs) 1 2 3 4 5 TWA061D 172 148 51 37 25 34 6.25 TWA076D 177 153 53 39 26 36 8.33 TWA101D 229 197 57 54 32 53 13 TWA156E 404 344 91 86 81 86 16.7 TWA201E 441 382 114 120 66 81 Figure 6. TWA073, 090, 120, TWA061, 076, 101 Figure 7. TWA180, 240, TWA156, 201 #4 #3 #4 #1 #1 #3 #2 S ER AC C VIC E ES S #2 S ER AC C VIC E ES S S ER AC C VIC E ES S LIFTING HOLES (BOTH S IDES ) LIFTING HOLES (BOTH S IDES ) 14 SSP-SVX14C-EN Installation Refrigerant Piping Guidelines Figure 8. Allowable elevation difference: Cooling only TTA above indoor unit Contact m an ufacturer for review Figure 9. Allowable elevation difference: TTA below indoor unit Contact m anufacturer for review Accep tab le liq uid -riser heig ht b ased on total liq uid -lin e len g th (TTA b elow ind oor un it) N o t e : Route refrigerant piping for minimum linear length, minimum number of bends and fittings (no reducers) and minimum amount of line exposed to outdoor ambients. SSP-SVX14C-EN 15 Installation Refrigerant Piping Procedures (Outdoor Units) WA R N I N G R - 4 10 A R e f r i g e r a n t u n d e r H i g h e r Pr e s s u r e t h a n R - 2 2 ! Fai l ure t o us e pr ope r eq ui pm e nt o r c om p on en ts a s de sc ri b ed be l ow, c ou ld re s ul t i n e qu i pme nt fa i li ng a n d p o s s i b l y e x p l o d i n g , w h i ch c o u l d r e s u l t i n d e a t h , s e r i o u s i n j u r y, o r e q u i p m e n t d a m a g e . T h e u n i t s d e s c r i b e d i n t h i s m a n u a l u s e R - 4 10 A r e f r i g e r a n t w h i ch o p e r a t e s a t h i g h e r p r e s s u r e s t h a n R - 2 2 . U s e O N LY R - 4 10 A r a t e d s e r v i c e eq ui pm e nt or c om p one nt s w it h the s e un it s. For s p e c i f i c h a n d l i n g c o n c e r n s w i t h R - 4 10 A , p l e a s e c o n t a c t y o u r l o c a l Tr a n e r e p r e s e n t a t i v e . Each TTA unit ships with a holding charge of dry nitrogen. The nitrogen should be removed and the entire system evacuated (at the proper time) to avoid possible contamination. 1. Remove the compressor service access panel. 2. Locate the liquid and suction line service valves. Check that the piping connection stubs on the valves (Figure 10, p. 16) line up properly with the holes in the unit cabinet. Figure 10. Outdoor units - refrigerant piping (with dry nitrogen) N OT I C E Syste m Component Dam age! Do no t remov e th e sea l ca ps f rom re fr ig era nt connections, or open the service valves until p r ep ar ed t o b r a ze r e f r ig er an t li n e s t o t h e connections. Excessi ve exposure to atmosphere (> 5 m i n . ) m a y a l l o w m o i s t u r e o r d i rt t o c o n t a m i n a t e the system, damaging valve seals and causing ice formation in system components. WA R N I N G Hazard of Explosion and Deadly Gases! Fa il u re to f ol lo w a ll pro pe r s af e re fr ig era nt handling practices could result in death or serious i n j u r y. N e v e r s o l d e r, b r a z e o r w e l d o n r e f r i g e r a n t l i n e s o r a ny uni t comp one nt s th at a re a bov e a tmosp he ric pressure or where refrigerant may be present. Al way s re move re fri ge ra nt by fol l ow in g t he g u i d e l i n e s e s t a b l i s h e d b y t h e E PA F e d e r a l C l e a n Air Act or other state or local codes as appropriate. A ft e r r e f r i g e r a n t r e m o v a l , u s e d r y n i t r o g e n t o b r i n g s y s t e m b a ck t o a t m o s p h e r i c p r e s s u r e b e f o r e opening system for repair s. Mixtures of refrigerants and air under pressure may become combustible in the presence of an ignition source leading to an explosion. Excessi ve heat from soldering, brazing or welding with refrigerant v a p o r s p r e s e n t c a n f o r m h i g h l y t ox i c ga s e s a n d e x t r e m e l y c o rr o s i v e a c i d s . 4. Cut, fit and braze tubing, starting at the outdoor unit and work toward the indoor unit. See recommended tube sizes, Table 4, p. 18. N o t e : Use long radius ells for all 90° bends. All brazing should be done using a 2 to 3 psig dry nitrogen purge flowing through the pipe being brazed, see Figure 10, p. 16. N OT I C E Syste m Component Dam age! Install a regulating valve between the nitrogen s o u r c e a n d t h e ga u g e m a n i f o l d . U n r e g u l a t e d pressure can damage system components. 3. Remove the refrigerant connection seal caps and open the service valve slowly to release the nitrogen from the unit. N OT I C E Syste m Component Dam age! We t - w r a p a l l v a l v e s a n d p r o t e c t p a i n t e d s u r f a c e s from excessi ve heat. Heat can damage system components and the unit finish. 5. Shut off nitrogen supply. Shut off the manifold valve for the line that is connected to the suction line service valve. Disconnect the line from the gauge port on the valve. 16 SSP-SVX14C-EN Installation Refrigerant Piping Procedures (Indoor Unit) Once liquid and suction lines are complete to the refrigerant connections on the indoor unit, remove the gauge port core(s) on the indoor unit connection stubs to release the dry nitrogen charge. N OT I C E Unit Damage! Do n ot a ppl y h ea t to re move se al ca ps un ti l th e ga u g e p o rt c o r e s h a v e b e e n r e m o v e d . I f s e a l c a p s are intact, application of heat may generate excessi ve pressure in the unit and result in damage to the coil or expansion valve. 1. Remove both seal caps from the indoor unit connection stubs. N OT I C E Unit Damage! Do n ot re move the se a l cap s fr om r ef ri ge ra nt connections, or open the service valves until prepared to braze refrigerant lines to the c o n n e c t i o n s . D u e t o t h e h i g h hy g r o s c o p i c p r o p e rt i e s o f t h e R - 4 10 A o i l , e x c e s s i v e e x p o s u r e t o atmosphere will allow moisture to contaminate t h e s y s t e m , d a m a g i n g t h e c o m p r e s s o r. 2. Turn on nitrogen supply. Nitrogen enters through the liquid line gauge port. WA R N I N G Hazard of Explosion! Fa il u re to f ol lo w re co m m en de d s af e le a k te s t procedures could result in death or serious injury o r e q u i p m e n t o r p r o p e rt y- o n l y - d a m a g e . N e v e r u s e a n o p e n f l a m e t o d e t e c t ga s l e a k s . U s e a leak test solution for leak testing. After the brazing operation of refrigerant lines to both the outdoor and indoor unit is completed, the field brazed connections must be checked for leaks. Pressurize the system through the service valve with dry nitrogen to 200 psi. Use soap bubbles or other leakchecking methods to ensure that all field joints are leak free. If not, release pressure, repair and repeat leak test. System Evacuation 1. After completion of leak check, evacuate the system. 2. Attach appropriate hoses from manifold gauge to gas and liquid line pressure taps. N o t e : Unnecessary switching of hoses can be avoided and complete evacuation of all lines leading to sealed system can be accomplished with manifold center hose and connecting branch hose to a cylinder of R410A and vacuum pump. 3. Attach center hose of manifold gauges to vacuum pump. N OT I C E 3. Braze the liquid line connections. 4. Open the gauge port on the suction line and then braze the suction line to the connection stub. Nitrogen will bleed out the open gauge port on the suction line. O p e r a t i n g U n d e r Va c u u m ! Do not operate or apply power to the compressor w hi le und er a v a cu um . Fa i lu re to f ol lo w th es e instructions will result in compressor failure. 5. Shut off nitrogen supply. 4. Evacuate the system to hold a 500 micron vacuum. Leak Check WA R N I N G Hazard of Explosion! Fai l ure t o fol l ow t he se rec o m m en da ti ons c oul d result in death or serious injury or equipment or p r o p e rt y- o n l y d a m a g e . Use only dry nitrogen with a pressure regulator for pre ssu ri zin g uni t. Do n ot use a ce ty le ne , ox yg en or compressed air or mixtures containing them for pressure testing. Do not use mixtures of a hy d r o g e n c o n t a i n i n g r e f r i g e r a n t a n d a i r a b ov e atmospheric pressure for pressure testing as they may become flammable and could result in an e x p l o s i o n . Re f r i g e r a n t , w h e n u s e d a s a t r a c e ga s should only be mixed with dry nitrogen for pressurizing units. SSP-SVX14C-EN 5. Close off valve to vacuum pump and observe the micron gauge. If gauge pressure rises above 500 microns in one minute, then evacuation is incomplete or the system has a leak. 6. If vacuum gauge does not rise above 500 microns in 10 minutes, the evacuation should be complete. N OT I C E Equipment Damage! C h a r g e w i t h a c c e s s p o rt o n t h e l i q u i d l i n e s e r v i c e v a l v e o n l y. 7. With vacuum pump and micron gauge blanked off, open valve on R-410A cylinder and allow refrigerant pressure to build up to about 80 psig. 8. Close valve on the R-410A supply cylinder. Close valves on manifold gauge set and remove refrigerant charging hoses from liquid and gas 17 Installation Refrigerant Charging Procedure gauge ports. 9. Leak test the entire system. Using proper procedures and caution, as described in the previous section, repair any leaks found and repeat the leak test. If charging by weight, refer to Table 4, p. 18 for starting change. If refrigerant adjustments are needed because of length of line, refer to ”Charging Charts and Superheat,” p. 26. Insulating and Isolating Refrigerant Lines Charge by weight through the gauge port on the liquid line. Once the charge enters the system, backseat (open) the liquid line service valve and disconnect the charging line and replace the cap on the gauge port. Insulate the entire suction line with refrigerant piping insulation. Also insulate any portion of the liquid line exposed to temperature extremes. Insulate and isolate liquid and suction lines from each other. Isolate refrigerant lines from the structure and any duct work. Notes: • R-410A should only be charged in the liquid state. • When possible, always charge the refrigerant into the liquid line of the unit. • If the entire charge can’t be charged into the liquid line, the balance of the unit charge can be metered through a charging manifold set as liquid — preferably through a schrader valve into the suction line to the compressor — only while the compressor is running. • Check and adjust superheat using Table 9, p. 29, then re-check charging charts to determine if charge corrections are necessary. I m p o rt a n t : 1. To prevent possible noise or vibration problems, be certain to isolate refrigerant lines from the building. 2. All suction and hot gas bypass piping (if installed) should be insulated from the termination in the air handler to the condensing unit cabinet entry. Failure to do so can cause condensate drip off and performance degradation. 3. Prior to starting a unit, it is advisable to have the approved oils available in the event oil needs to be added to the system. N OT I C E Equipment Damage! T h i s i s P O E o i l , w h i ch r e a d i l y a b s o r b s m o i s t u r e . Alwa ys us e ne w oi l a nd n ev e r l e av e c on ta in er s open to atmosphere while not in use. N OT I C E Equipment Damage! N e v e r ch a r g e l i q u i d r e f r i g e r a n t i n t o t h e s u c t i o n l i n e o f t h e u n i t w i t h t h e c o m p r e s s o r o ff. Figure 11. Outdoor units - refrigerant piping Table 3. TWA approved oils Unit Model Number Approved Oils TWA061, TWA073, TWA076, TWA090, TWA101, TWA120, TWA156, TWA180, TWA201, TWA240 Trane Oil Part Number OIL00094 (1 quart container) For units equipped with compressors containing site glasses, the oil level must be visible through the sight glass when the compressor is running under stabilized conditions and a few minutes after the compressor has stopped. 18 SSP-SVX14C-EN Installation Table 4. Estimated charge levels at ARI rated line lengths (25 feet) Refrigerant Charge (a) Per Circuit Matched Set Circuit 1 Circuit 2 Liquid Line Diameter Vapor Line Diameter TWA061D w/TWE076D(a) 20.4 NA 0.5 (1/2”) 1.125 (1 1/8”) TWA073D w/TWE090D(a) 20.4 NA 0.5 (1/2”) 1.125 (1 1/8”) TWA076D w/TWE076D 20.6 NA 0.625 (5/8”) 1.375 (1 3/8”) TWA090D w/TWE090D 20.6 NA 0.625 (5/8”) 1.375 (1 3/8”) TWA101D w/TWE101D 27.9 NA 0.5 (1/2”) 1.375 (1 3/8”) TWA120D w/TWE120D 27.9 NA 0.5 (1/2”) 1.375 (1 3/8”) TWA156E w/TWE156E 22.9 24.2 0.5 (1/2”) 1.375 (1 3/8”) TWA180E w/TWE180E 22.9 24.2 0.5 (1/2”) 1.375 (1 3/8”) TWA201E w/TWE201E 23.5 23.5 0.625 (5/8”) 1.375 (1 3/8”) TWA240E w/TWE240E 23.5 23.5 0.625 (5/8”) 1.375 (1 3/8”) TWA061D and TWA073D need a reducer for vapor line. (1.375 to 1.125) (1 3/8” to 1 1/8”) Liquid Charging This procedure is accomplished with the unit operating. Electrical connections must be complete. Do not proceed until the system is ready to operate. N o t e : The compressor access panel must be installed when the unit is running and being charged. Manifold hoses must be routed through refrigerant gauge access hole(s). See ”Dimensional Data,” p. 10 for specific locations. WA R N I N G Li ve Electrical Components! Fai l ure t o fol l ow al l e le c tr ic a l s af et y pr ec a uti on s when exposed to li ve electrical components could r e s u l t i n d e a t h o r s e r i o u s i n j u r y. When it is necessary to work with li ve electrical components, have a qualified licensed electrician or other indi vidual who has been properly trained in handling li ve electrical components perform these tasks. 1. Turn on power to the unit. Allow the system to run for 15 minutes to stabilize operating conditions. 2. Measure airflow across the indoor coil. Compare the measurements with the fan performance data in the Data/Submittal or Service Facts. Once proper airflow is established, compare discharge pressure and liquid temperature to the ”Charging Charts,” p. 26. Add or remove refrigerant (liquid only) as required to obtain correct discharge pressure and liquid temperature. I m p o rt a n t : If the unit is charged and left without power until a later date, the crankcase heater should be energized for a minimum of 8 hours prior to powering the compressor(s). WA R N I N G H a z a r d o u s Vo l t a g e w / C a p a c i t o r s ! F a i l u r e t o d i s c o n n e c t p o w e r a n d d i s ch a r g e capacitor s before servicing could result in death or s e r i o u s i n j u r y. D i s c o n n e c t a l l e l e c t r i c p o w e r, i n c l u d i n g r e m o t e d i s c o n n e c t s a n d d i s ch a r g e a l l m o t o r s t a rt / r u n c a p a c i t o r s b e f o r e s e r v i c i n g . F o l l o w p r o p e r l o ck o u t / tagout procedures to ensure the power cannot be i n a d v e rt e n t l y e n e r g i z e d . F o r v a r i a b l e f r e q u e n c y dri ves or other energy storing components p r ov i d e d b y Tr a n e o r o t h e r s , r e f e r t o t h e a p p r o p r i a t e m a n u f a c t u r e r ’s l i t e r a t u r e f o r a l l o wa b l e w a i t i n g p e r i o d s f o r d i s ch a r g e o f c a p a c i t o r s . Ve r i f y w i t h a n a p p r o p r i a t e v o l t m e t e r t h a t a l l c a p a c i t o r s h a v e d i s ch a r g e d . Fo r a dd it io na l i nfo rm a ti on re gar di ng th e s af e d i s ch a r g e o f c a p a c i t o r s , s e e P R O D - S V B 0 6 A - E N . 5. Remove the charging system from the unit. 6. Replace all panels. 3. Check suction line superheat and condenser subcooling to ensure the unit is operating properly. 4. Disconnect all power to the unit. SSP-SVX14C-EN 19 Installation Electrical Wiring WA R N I N G Pr o p e r F i e l d W i r i n g a n d G r o u n d i n g Re q u i r e d! Fai l ure t o fol l ow c od e c oul d re s ul t in d ea th o r s e r i o u s i n j u r y. A l l f i e l d w i r i n g M U ST b e p e r f o r m e d b y q u a l i f i e d per sonnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION h a z a r d s . To a v o i d t h e s e h a z a r d s , y o u M U ST f o l l o w requirements for field wiring installation and grounding as described in NEC and your local/ state electrical codes. Field wiring consists of providing power supply to the unit, installing the system indoor thermostat and providing low voltage system interconnecting wiring. Access to electrical connection locations is shown in ”Dimensional Data,” p. 10. Determine proper wire sizes and unit protective fusing requirements by referring to the unit nameplate and/or the unit Service Facts. Field wiring diagrams for accessories are shipped with the accessory. N OT I C E Use Copper Conductor s Only! Fa il u re to u se co ppe r c ond uc to r s c oul d re s ul t in equipment damage as unit terminals are not designed to accept other types of conductor s. Low Voltage Wiring Mount the indoor thermostat, zone sensor, or Night Setback Panel (NSB) in accordance with the corresponding thermostat installation instructions. Install color-coded, weather-proof, multi-wire cable according to the field wiring schematics (see ”Field Wiring”, p. 21). ReliaTel™ ™ Controls Wiring shown with dashed lines is to be furnished and installed by the customer. All customer supplied wiring must be copper only and must conform to NEC and local electrical codes. Codes may require line of sight between disconnect switch and unit. Notes: 1. When electric heater accessory is used, single point power entry or dual point power entry is field optional. Single point power entry option is through electric heater only. Unit Power Supply The installer must provide line voltage circuit(s) to the unit main power terminals as shown by the unit wiring diagrams (available through e-Library or by contacting a local sales office) or field wiring. Power supply must include a disconnect switch in a location convenient to the unit. Ground the unit according to local codes and provide flexible conduit if codes require and/or if vibration transmission may cause noise problems. 2. ***Choose only one of the following; Thermostat, Zone Sensor, or NSB Panel. ReliaTel jobsite connections Figure 12. Disconnect S witch (By Others) Note 2 B I m p o rt a n t : All wiring must comply with applicable local and national (NEC) codes. Type and location of disconnect switches must comply with all applicable codes. Electric Heat Accessory WA R N I N G D Pr o p e r F i e l d W i r i n g a n d G r o u n d i n g Re q u i r e d! Fai l ure t o fol l ow c od e c oul d re s ul t in d ea th o r s e r i o u s i n j u r y. A l l f i e l d w i r i n g M U ST b e p e r f o r m e d b y q u a l i f i e d per sonnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION h a z a r d s . To a v o i d t h e s e h a z a r d s , y o u M U ST f o l l o w requirements for field wiring installation and grounding as described in NEC and your local/ state electrical codes. B A C E T’s t a t Zo n e Sensor A. F Disconnect S witch (By Others) Note 2 Disconnect S witch (By Others) NSB P anel D. 3 power wires, line voltage for 3 phase, (2 power wires for single phase) 3 power wires, line voltage for 3 phase, (2 power wires for single phase) Heat Pump thermostat: 5 to 8 wires depending on stages of electric heat 3 to 7 wires depending on type of outdoor unit(s) E. Zone Sensor: 4 to 10 wires depending on zone sensor model(a) F. Night Setback Panel: 7 wires B. C. (a) 20 Air Handler For SZVAV air handlers: 4 additional wires are required (2 of which require twisted pair or shielded wire) in order to make connections between ReliaTel boards in the condenser and air handler. SSP-SVX14C-EN Installation Field Wiring Figure 13. Night setback panel field wiring Figure 14. Zone sensor field wiring SSP-SVX14C-EN 21 Installation Figure 15. Thermostat field wiring X X Refrigerant Circuit Figure 16. Typical split system heat pump - cooling - refrigerant circuit HEAT PUMP CIRCUIT DIAGRAM COOLING MODE Note A EQUALIZER LINE FIELD SUPPLIED INTER-CONNECTING TUBING 4-WAY SWITCHOVER VALVE EQUALIZER TUBE EXPANSION VALVE BULB Note A V OUTDOOR COIL AIR SERVICE VALVE EXPANSION VALVE BULB TXV FILTER DRIER HIGH PRESSURE SWITCH (HPCO) TXV D CHECK VALVES INDOOR COIL AIR GAUGE CONNECTION S COMPRESSOR Note A DISCHARGE TEMPERATURE LIMIT(DTL) LOW PRESSURE SWITCH (LPCO) Note A V SERVICE VALVE INDICATES DIRECTION OF REFRIGERANT FLOW NOTE A: ONLY ONE OUTDOOR AND INDOOR COIL REFRIGERANT ENTRY AND EXIT CIRCUIT IS SHOWN. ALL MODELS HAVE MULTIPLE ENTRY AND EXIT CIRCUITS. NOTE B: DUAL CIRCUIT MODELS HAVE 2 REFRIGERATION CIRCUITS. 22 SSP-SVX14C-EN Installation Figure 17. Typical split system heat pump - heating - refrigerant circuit HEAT PUMP CIRCUIT DIAGRAM HEATING MODE FIELD SUPPLIED INTER-CONNECTING TUBING EQUALIZER LINE NOTE A EQUALIZER LINE NOTE A SERVICE VALVE 4-WAY SWITCHOVER VALVE V EXPANSION VALVE BULB OUTDOOR COIL TXV HIGH PRESSURE SWITCH (HPCO) TXV AIR INDOOR COIL AIR HANDLER FILTER DRIER LOW PRESSURE SWITCH (LPCO) AIR D S COMPRESSOR CHECK VALVES NOTE A NOTE A GAUGE CONNECTIONS DISCHARGE TEMPERATURE LIMIT (DTL) SERVICE VALVE DE-ICE LOOP V INDICATES DIRECTION OF REFRIGERANT FLOW NOTE A: ONLY ONE OUTDOOR AND INDOOR COIL REFRIGERANT ENTRY AND EXIT CIRCUIT IS SHOWN. ALL MODELS HAVE MULTIPLE ENTRY AND EXIT CIRCUITS. NOTE B: DUAL CIRCUIT MODELS HAVE 2 REFRIGERATION CIRCUITS. SSP-SVX14C-EN 23 Electrical Data Table 5. Electrical characteristics — compressor and condenser fan motors — heat pumps — 60 Hz Compressor Motor Tons Unit Model Number Condenser Fan Motor Amps No. Volts Phase RLA Amps LRA No. Volts Phase FLA (Ea.) (Ea.) 6 7.5 10 15 20 LRA (Ea.) (Ea.) TWA073D3 1 208-230 3 22.4 149 1 208-230 1 3.1 8.1 3.8 TWA073D4 1 460 3 10.6 75 1 460 1 1.6 TWA073DK 1 380 3 11.3 88 1 380 1 2.7 7 TWA073DW 1 575 3 8.3 54 1 575 1 1.2 3 TWA090D3 1 208-230 3 25 164 1 208-230 1 3.1 8.1 TWA090D4 1 460 3 13 100 1 460 1 1.6 3.8 TWA090DK 1 380 3 14.3 94.3 1 380 1 2.7 7 TWA090DW 1 575 3 10.8 78 1 575 1 1.2 3 TWA120D3 1 208-230 3 30.1 225 1 208-230 1 5 14.4 TWA120D4 1 460 3 16.7 114 1 460 1 2.5 5.8 TWA120DK 1 380 3 24.4 145 1 380 1 3.4 7.8 TWA120DW 1 575 3 12.3 80 1 575 1 2 5.1 TWA180E3 2 208-230 3 25 164 2 208-230 1 5 14.4 TWA180E4 2 460 3 12.6 100 2 460 1 2.5 5.8 TWA180EK 2 380 3 14.3 94.3 2 380 1 3.4 7.8 TWA180EW 2 575 3 10.4 78 2 575 1 2 5.1 TWA240E3 2 208-230 3 33.8 239 2 208-230 1 5 14.4 TWA240E4 2 460 3 18 125 2 460 1 2.5 5.8 TWA240EK 2 380 3 24.4 145 2 380 1 3.4 7.8 TWA240EW 2 575 3 13.7 80 2 575 1 2 5.1 Table 6. Unit wiring — heat pumps — 60 Hz Tons 6 7.5 10 15 24 Unit Model Number Unit Operating Voltage Range Minimum Circuit Ampacity Maximum Fuse or HACR Circuit Breaker Size TWA073D3 187-253 31.1 40 TWA073D4 414-506 14.9 20 TWA073DK 342-418 16.8 20 TWA073DW 518-632 11.6 15 TWA090D3 187-253 34.4 45 TWA090D4 414-506 17.9 25 TWA090DK 342-418 20.6 25 TWA090DW 518-632 14.7 20 TWA120D3 187-253 42.6 60 TWA120D4 414-506 23.4 30 TWA120DK 342-418 33.9 45 TWA120DW 518-632 17.4 25 TWA180E3 187-253 66.3 80 TWA180E4 414-506 33.4 40 TWA180EK 342-418 39.0 45 TWA180EW 518-632 27.4 30 SSP-SVX14C-EN Electrical Data Table 6. Unit wiring — heat pumps — 60 Hz (continued) Tons Unit Operating Voltage Range Unit Model Number 20 Minimum Circuit Ampacity Maximum Fuse or HACR Circuit Breaker Size 100 TWA240E3 187-253 86.1 TWA240E4 414-506 45.5 50 TWA240EK 342-418 61.8 70 TWA240EW 518-632 34.8 40 Note: HACR type circuit breaker per NEC. Table 7. Electrical characteristics — motors — heat pumps — 50 Hz Compressor Motor Condenser Fan Motor Amps Unit Model Number No. Volts TWA061DD 1 380/415 3 10.9 TWA076DD 1 380/415 3 12.5 TWA101DD 1 380/415 3 17.2 111 TWA156ED 2 380/415 3 12.5 TWA201ED 2 380/415 3 18.5 Phase RLA LRA (Ea.) (Ea.) Amps No. Volts Phase RLA LRA (Ea.) (Ea.) 74 1 380/415 1 1.6 3.8 101 1 380/415 1 1.6 3.8 1 380/415 1 1.9 5.8 100 2 380/415 1 1.9 5.8 118 2 380/415 1 1.9 5.8 Table 8. Unit wiring — heat pumps — 50 Hz 5 TWA061DD 380/415 15.2 Maximum Fuse Size or Maximum Circuit Breaker 20 6.25 TWA076DD 380/415 17.3 25 8.33 TWA101DD 380/415 23.4 30 13 TWA156ED 380/415 32.0 40 16.7 TWA201ED 380/415 45.4 60 Tons Unit Model Number Unit Operating Voltage Range Maximum Circuit Ampacity Note: HACR type circuit breaker per NEC. SSP-SVX14C-EN 25 Charging Charts and Superheat Figure 18. TWA061D Cooling Figure 21. TWA073D Heating TWA073D Ch a rg in g Cu rv e - He a tin g Mo d e TWA061D Ch a rg in g Cu rve - Co o lin g Mo d e 450 650 625 425 600 375 525 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig 550 75°F Return Air Re m o v e c h a rg e 400 575 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 65°F Return Air 350 55°F Return Air 325 300 275 250 Ad d c h a rg e 225 300 200 275 175 250 225 150 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 5 10 15 20 25 30 140 35 40 45 50 55 60 65 70 75 80 120 125 130 135 140 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F Figure 22. Figure 19. TWA061D Heating TWA076D Cooling TWA076D Ch a rg in g Cu rve - Co o lin g Mo d e TWA061D Ch a rg in g Cu rv e - He a tin g Mo d e 650 450 625 600 425 75°F Return Air Re m o v e c h a rg e Dis c h a rg e P re s s u re , p s ig 575 550 375 65°F Return Air 350 55°F Return Air 325 300 275 250 Dis c h a rg e P re s s u re , p s ig 400 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 Ad d c h a rg e 225 525 300 275 200 250 175 225 200 150 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 55 80 60 65 70 75 80 Figure 20. 85 90 95 100 105 110 115 Liq u id Te mp e ra tu re Le a vin g OD Co il, °F Amb ie n t Te mp e ra tu re , °F TWA073D Cooling Figure 23. TWA076D Heating TWA076D Ch a rg in g Cu rv e - He a tin g Mo d e TWA073D Ch a rg in g Cu rve - Co o lin g Mo d e 400 650 625 75°F Return Air 375 600 Re m o v e c h a rg e 575 350 65°F Return Air 525 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig 550 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 325 300 55°F Return Air 275 250 225 300 275 Ad d c h a rg e 200 250 225 175 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F 26 SSP-SVX14C-EN C h a r g i n g C h a rt s a n d S u p e r h e a t Figure 24. TWA090D Cooling Figure 27. TWA101D Heating TWA101D Ch a rg in g Cu rv e - He a tin g Mo d e TWA090D Ch a rg in g Cu rve - Co o lin g Mo d e 400 650 75°F Return Air 625 375 600 575 Re m o v e c h a rg e 350 525 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig 550 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 65°F Return Air 325 55°F Return Air 300 275 250 225 Ad d c h a rg e 200 300 275 175 250 225 150 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 5 10 15 20 25 30 140 35 40 45 50 55 60 65 70 75 80 120 125 130 135 140 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F Figure 25. Figure 28. TWA090D Heating TWA120D Cooling TWA120D Ch a rg in g Cu rve - Co o lin g Mo d e TWA090D Ch a rg in g Cu rv e - He a tin g Mo d e 650 400 625 75°F Return Air 600 375 350 550 65°F Return Air Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig 575 Re m o v e c h a rg e 325 55°F Return Air 300 275 525 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 250 300 Ad d c h a rg e 275 225 250 225 200 200 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 55 60 65 70 75 Amb ie n t Te mp e ra tu re , °F Figure 26. 85 90 95 100 105 110 115 Liq u id Te mp e ra tu re Le a vin g OD Co il, °F TWA101D Cooling Figure 29. TWA120D Heating TWA120D Ch a rg in g Cu rv e - He a tin g Mo d e TWA101D Ch a rg in g Cu rve - Co o lin g Mo d e 650 450 625 425 600 Re m o v e c h a rg e 400 575 75°F Return Air 375 525 Dis c h a rg e P re s s u re , p s ig 550 Dis c h a rg e P re s s u re , p s ig 80 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 65°F Return Air 350 325 55°F Return Air 300 275 250 225 Ad d c h a rg e 200 175 300 275 150 250 125 225 100 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F SSP-SVX14C-EN 27 C h a r g i n g C h a rt s a n d S u p e r h e a t Figure 30. TWA156E Cooling Figure 33. TWA180E Heating b oth compres s ors running TWA156E Ch a rg in g Cu rve - Co o lin g Mo d e (Ea c h Circ u it) TWA180E Ch a rg in g Cu rv e - He a tin g Mo d e (Ea c h Circ u it) 650 500 625 475 600 450 575 425 550 400 525 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig both compre s s ors running Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 Re m o v e c h a rg e 75°F Return Air 65°F Return Air 375 350 55°F Return Air 325 300 275 250 225 200 300 175 275 150 250 125 225 Ad d c h a rg e 100 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 5 10 15 20 25 30 140 35 40 45 50 55 60 65 70 75 80 125 130 135 140 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F Figure 34. Figure 31. TWA156E Heating b oth compres s ors running TWA201E Cooling TWA201E Ch a rg in g Cu rve - Co o lin g Mo d e (Ea c h Circ u it) TWA156E Ch a rg in g Cu rv e - He a tin g Mo d e (Ea c h Circ u it) both compre s s ors running 650 500 625 475 600 Re m o v e c h a rg e 450 575 425 65°F Return Air 375 350 55°F Return Air 325 300 275 250 225 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig 550 75°F Return Air 400 525 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 200 300 Ad d c h a rg e 175 275 150 250 125 225 200 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 55 80 60 65 70 75 Figure 32. 80 85 90 95 100 105 110 115 120 Liq u id Te mp e ra tu re Le a vin g OD Co il, °F Amb ie n t Te mp e ra tu re , °F TWA180E Cooling Figure 35. TWA201E Heating b oth compres s ors running TWA180E Ch a rg in g Cu rve - Co o lin g Mo d e (Ea c h Circ u it) TWA201E Ch a rg in g Cu rv e s - He a tin g Mo d e (Ea c h Circ u it) both compre s s ors running 650 500 625 475 600 450 575 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig 525 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 75°F Re tu rn Air Re m o v e c h a rg e 425 550 400 65°F Re tu rn Air 375 55°F Re tu rn Air 350 325 300 275 250 Ad d c h a rg e 225 300 275 200 250 175 225 150 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F 28 SSP-SVX14C-EN C h a r g i n g C h a rt s a n d S u p e r h e a t Figure 36. TWA240E Cooling Figure 37. TWA240E Heating b oth compres s ors running TWA240E Ch a rg in g Cu rve - Co o lin g Mo d e (Ea c h Circ u it) TWA240E Ch a rg in g Cu rv e s - He a tin g Mo d e (Ea c h Circ u it) both compre s s ors running 650 500 625 475 600 75°F Re tu rn Air 450 575 525 Dis c h a rg e P re s s u re , p s ig Dis c h a rg e P re s s u re , p s ig Re m o v e c h a rg e 425 550 Re m o ve c h a rg e 500 475 450 425 400 375 Ad d c h a rg e 350 325 65°F Re tu rn Air 400 55°F Re tu rn Air 375 350 325 300 275 250 Ad d c h a rg e 225 300 275 200 250 175 225 150 200 0 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 5 10 140 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Amb ie n t Te mp e ra tu re , °F Liq u id Te mp e ra tu re Le a vin g OD Co il, °F Table 9. TWA superheat with matched TWE air handler Cooling Superheat Heating Superheat Condenser Air Handler Circuit 1 Circuit 2 Circuit 1 Circuit 2 TWA061D TWE076D 14.9 — 12.7 — TWA073D TWE090D 14.9 — 12.7 — TWA076D TWE076D 16.0 — 15.7 — TWA090D TWE090D 16.0 — 15.7 — TWA101D TWE101D 16.3 — 13.1 — TWA120D TWE120D 16.3 — 13.1 — TWA156E TWE156E 15.5 15.5 12.2 12.2 TWA180E TWE180E 15.5 15.5 12.2 12.2 TWA201E TWE201E 14.7 14.7 11.4 11.4 TWA240E TWE240E 14.7 14.7 11.4 11.4 Notes: 1. An adjustable TXV is provided for each circuit in the TWE and TWA models. If the application causes the superheat to deviate from the values shown above by more than 1 degree - after the system has achieved steady state - the TXV should be adjusted to provide the values shown as measured at the compressor. 2. The values given above have been tested and are approved for the matched sets shown. If an alternate combination is used, an expansion device should be used that provides 16-20°F degrees of superheat measured at the compressor. 3. Check and adjust superheat using this table, then compare with charging chart to determine if charge corrections are necessary. SSP-SVX14C-EN 29 Installation Checklist Complete this checklist once the unit is installed to verify that all recommended procedures have been accomplished before starting the system. Do not operate the system until all items covered by this checklist are complete. Inspect unit location for proper required service clearances. Inspect unit location for proper free air clearances. Inspect unit location for secure, level mounting position. Refrigerant Piping Properly sized/constructed liquid and suction lines connected to stubs at both the indoor and outdoor units? Insulated portions of liquid line exposed to extremes in temperature? Performed initial leak test? Evacuated each refrigerant circuit to 500 microns? Charged each circuit with proper amount of R410A? Electrical Wiring Provided unit power wiring (with disconnect) to proper terminals in the unit control section? Installed system indoor thermostat? Installed system low voltage interconnecting wiring to proper terminals of outdoor unit, indoor unit and system thermostat? Insulated the entire suction line? 30 SSP-SVX14C-EN Pre-Start Control Circuit Features High Pressure Cut-Out (HPCO) N o t e : Not all of these features may be required for your unit, check electrical schematic. This control’s sensor is located in the discharge line. This device will shut off the compressor and the outdoor fan(s) if the discharge pressure exceeds the High Pressure Cut-Out’s setting. Once the discharge pressure has returned to normal, the compressor will cycle back on. Discharge Temperature Limit (DTL) The control’s sensor is located on the discharge line. This device will shut off the compressor and the outdoor fan(s) if the discharge temperature exceeds the DTL setting. Once the discharge temperature has returned to normal, the compressor will cycle back on. Evaporator Defrost Control (EDC) This control is located in the Air Handler. The control’s sensing tube is embedded vertically in the evaporator coil, near the center. This device will stop the compressor if the indoor coil temperature drops below its setting. The indoor air will still circulate across the coil bringing the temperature of the coil back up to the cut-in temperature of the evaporator defrost control. Low Pressure Cut-Out (LPCO) This control’s sensor is located in the suction (gas) line, near the compressor. This control will stop the compressor and the outdoor fans if suction pressure drops below the Low Pressure Cut-Out setting. Once the suction pressure has returned to normal, the compressor and outdoor fans will cycle back on. SSP-SVX14C-EN WA R N I N G Prevent I nj ury! D u e t o a g e n c y s a f e t y r e q u i r e m e n t s , n o s ch r a d e r c o r e i s t o b e i n s t a l l e d b e n e a t h t h e H P C O. R e m o v a l o f t h e H P C O w i t h o u t e v a c u a t i n g t h e s y s t e m ch a r g e could cause injury and release of refrigerant. Internal Overload Protector (IOL) This device is embedded in the compressor. It will shut off the compressor if the discharge temperature of the compressor exceeds its design trip temperature. N o t e : The IOL will put the compressor back in operation once the compressor motor heat has dropped below the trip setting; however, a check of the refrigerant and electrical systems should be made to determine the cause and be corrected. 31 Start-Up ReliaTel™ ™ Controls The ReliaTel™ Control is a microelectronic control feature, which provides operating functions that are significantly different than conventional Electromechanical units. The ReliaTel™ Refrigeration Module (RTRM) uses proportional/integral control algorithms to perform specific unit functions that govern the unit operation in response to application conditions. The RTRM provides compressor anti-short cycle (ASC) timing functions through minimum“ “O ff” and “O n ” timing to increase reliability, performance and to maximize unit efficiency. Upon power initialization, the RTRM performs self-diagnostic checks to insure that all internal controls are functioning. It also checks the configuration parameters against the components connected to the system. The system LED located on the RTRM module is turned “O n ” within one second after power-up if all internal operations are correct. The heating and cooling cycles of the heat pump are automatic for Heat and Cool functions when using an optional automatic changeover thermostat (TS). The fan switch on the optional automatic changeover thermostat can be placed in either the O N position, causing continuous evaporator (indoor) fan operation, or the A U TO position causing fan operation to coincide with heating or cooling run cycles. (In A U TO position, the fan switch automatically changes to Heat or Cool in response to sufficient room temperature change.) Anti-Short Cycle Timer CC Compressor Contactor CCH Crankcase Heater CF Outdoor Fan Capacitor CHR Crankcase Heater Relay 32 CPR Compressor CTS Coil Temperature Sensor DTL Discharge Temperature Limit Switch EDC Evaporator Defrost Control Switch FTB Outdoor Fan Terminal Block HPC High Pressure Cutout Switch HTB High Voltage Terminal Block LPC Low Pressure Cutout Switch LTB Low Voltage Terminal Board OAS Outdoor Air Temperature Sensor ODF Outdoor Fan Relay ODM Outdoor Fan Motor PM Phase Monitor RTRM ReliaTel ™ Refrigeration Module SOV Switchover Valve TNS Transformer These subsections describe the following key heat pump functions and features: • ASC Communication Interface Module Functions and Features Terminology The following terms and acronyms may be used in this section. COMM • • • • • Processing Activated When the Disconnect Switch is in O N Position Mechanical Heat Auxiliary Heat Emergency Heat Cooling Demand Defrost Processing Activated When the Disconnect Switch is in the ON Position The following table lists the processing that occurs given the stated condition. SSP-SVX14C-EN S t a rt - U p Condition If the disconnect switch is in the ON position… Resulting Operations 1. Current is supplied to the compressor crankcase heater(s) (CCH) through the normally closed contacts of the crankcase heater relay (CHR) when the compressor is not running. 2. The phase monitor (PM) is powered. 3. The phase monitor (PM) looks at the incoming power to verify that there is no reversed phase, no phase imbalance, and no loss of phase. If the phase monitor detects any of these three conditions, it will shut off control voltage. 4. The control transformer (TNS) is powered. 5. The ReliaTel ™ control board (RTRM) is powered and performs self-diagnostic checks to insure that all internal controls are functioning. 6. The ReliaTel ™ control board (RTRM) checks the configuration parameters against the components connected to the system. 7. The system LED located on the RTRM module is turned ON within one second after power-up if all internal operations are correct. 8. The communications board (COMM) is powered if installed. 9. The indoor thermostat (TS) is powered. Mechanical Heat Smart Recovery In Heat mode the switchover valve (SOV) is turned O F F. When a request for heating occurs, the control system turns O N the mechanical heat (compressors) to perform heating. Dual circuit heat pumps are factory configured to have 2-step mechanical heating enabled (RTRM J4-3 tied to ground). Smart Recovery dictates that if the Active Zone Temperature is making a recovery using only mechanical heating toward the setpoint at a rate of at least 6°F/hour (0.1°F/minute), the electric heat is disabled. If Smart Recovery is not disabling electric heat, an approximate 9 minute stage-up delay (plus or minus a few minutes) is provided for each stage to allow time for recovery to begin. Stages of electric heat are enabled and energized as necessary to meet heating demand. When the request for Auxiliary Heat is removed, the Indoor Fan request is turned O F F at the same time as the Electric Heat Stages. See Table 10, p. 34, Table 11, p. 35, Table 12, p. 35, and Table 13, p. 35 for the staging, sequence, and control. The staging sequence depends on the type of mechanical heating that is enabled. • If 1-Step mechanical heating is enabled (RTRM J4-3 not tied to ground), the unit will stage according to Table 12, p. 35, as a result of the proportional/ integral control algorithms. • Units with 2-step mechanical heating will stage according to Table 13, p. 35, as a result of the proportional/integral control algorithms. With mechanical heating, when a heat request is turned O N , the Indoor Fan request is turned O N . When the heat request is turned O F F, the Indoor Fan request is turned O F F after a specified delay (60 seconds on all dual-compressor units and 80 seconds on all single compressor units). See Table 10, p. 34, Table 11, p. 35, Table 12, p. 35, and Table 13, p. 35 in this document for the staging, sequence, and control. Auxiliary Heat Auxiliary Heat is factory disabled on all Odyssey units (Jumper placed between J2-1 and J2-2 RTRM inputs). If configured (Jumper wire cut or removed between J2-1 and J2-2 on RTRM) and installed, Auxiliary Heat is enabled or disabled by Smart Recovery. All split system units are also configured from the factory for only 1-Stage of Electric Heat (Jumper placed between J1-3 and J1-6 RTRM inputs). To enable two stages of Electric Heat, cut or remove the jumper between J1-3 and J1-6 RTRM inputs. Emergency Heat When Emergency Heat mode is requested and Auxiliary Electric Heat is configured and installed, only the Auxiliary Electric Heat will be turned O N to satisfy the Heat request. Mechanical heat will be held O F F. When the request for Emergency Heat is initiated, the Indoor Fan request is turned O N 1 second before the electric heat stages are activated. See Table 10, p. 34, Table 11, p. 35, Table 12, p. 35, and Table 13, p. 35for the staging, sequence, and control. Cooling With a request for Cooling, the RTRM stages the circuits and control normally for single and dual stage SSP-SVX14C-EN 33 S t a rt - U p Single and Dual Circuits cooling applications. If the unit is configured with a zone sensor, switchover valve 1 (SOV1) and switchover valve 2 (SOV2) are energized for the duration of the Cooling mode and do not change states until the unit either enters O F F mode or transitions to Heat mode. If the unit is controlled with a thermostat, SOV1 and SOV2 are energized while the thermostat W1/O signal output to the RTRM is active. When a circuit enters Defrost mode, the compressor will remain energized, the associated outdoor fan (ODF) will de-energize, the associated switchover valve (SOV) output will energize, and the first stage of Auxiliary Heat energizes. On dual circuit units, the opposite circuit's state will remain unchanged if a defrost cycle has not been initiated on that circuit. Each circuit will enter defrost independently based on its associated Outdoor Coil Temperature Sensor (CTS), the Outdoor Air Temperature Sensor (OAS), and its total accumulated run time. The outdoor fans (ODF) will turn O N and O F F with the compressors. Circuit 1 fan cycles with compressor 1 and circuit 2 fan will cycle with compressor. If a compressor is turned O F F, the anti-short cycle timer (ASC) will hold the compressor O F F for 3 minutes. See Table 10, p. 34, Table 11, p. 35, Table 12, p. 35, and Table 13, p. 35 for the staging, sequence, and control. Termination of the Defrost Cycle A circuit will leave defrost, during normal conditions, once the outdoor coil temperature reaches the outdoor air temperature + 47°F which must be above 57°F and not greater than 72°F. Termination of the defrost cycle includes a "Soft Start" delay of 5 seconds for the switchover valve (SOV) where the outdoor fans (ODF) are turned on 5 seconds before the switchover valve (SOV) is returned to the heating position to help smooth the transition. Demand Defrost When power is first applied to the unit, the first demand-defrost cycle will be initiated based on a cumulative run time of exactly 30 minutes only at the required conditions. The cumulative run time at the required conditions is tracked separately for each compressor. Shortly after completion of the first defrost cycle, the system control calculates the temperature difference between the outdoor coil and outdoor air, using the result as an indicator of unit performance at dry coil conditions. Behavior of Switchover Valves The switchover valves (SOV) will both be energized during cooling mode and will be de-energized during Heat or O F F mode. However, during a defrost cycle, only the circuit that requires a defrost cycle will energize its switchover valve (SOV). For thermostat control, if a thermostat is requesting for the switchover (SOV) to be energized or de-energized, both switchover valve (SOV) outputs will follow the thermostat request (unless a circuit is in a defrost cycle). Conditions Triggering the Defrost Cycle Over time, as moisture and frost accumulate on the coil, the coil temperature will drop, increasing the temperature difference. When the temperature difference is large enough, a defrost cycle is initiated. Demand Defrost is initiated when the outdoor air temperature (OAS) is below 52°F and the outdoor coil temperature (CTS) is below 33°F. Defrost Configuration Facts Units are configured from the factory to have Independent Circuit defrost (RTRM input J9-3 tied to ground with RTRM input J1-5 OPEN). Table 10. Heat pump operation with thermostat Inputs 34 Outputs Y1 Y2 G W1 W2 O X2 Cool Heat1 Indoor Fan ON OFF Don't Care Don't Care OFF HEAT OFF OFF Stage 1 ON OFF ON Don't Care Don't Care OFF HEAT OFF OFF Stage 2 ON ON ON Don't Care Don't Care OFF HEAT OFF OFF Stage 1 + Stage 2 ON ON OFF Don't Care Don't Care ON HEAT OFF OFF Stage 1 + Auxiliary ON OFF ON Don't Care Don't Care ON HEAT OFF OFF Stage 2 + Auxiliary ON ON ON Don't Care Don't Care ON HEAT OFF OFF Stage 1 + Stage 2 + Auxiliary ON SSP-SVX14C-EN S t a rt - U p Table 10. Heat pump operation with thermostat (continued) Inputs Outputs Y1 Y2 G W1 W2 O X2 Cool Heat1 Indoor Fan Don't Care Don't Care Don't Care Don't Care Don't Care Don't Care ON OFF Em Heat ON Note: Stage 1 = Circuit 1 and Stage 2 = Circuit 2 Table 11. Heat pump operation with a zone sensor with lead/lag enabled Table 11. Heat pump operation with a zone sensor with lead/lag enabled (continued) Heating Request Circuit Output Heating Request Circuit Output 0 (None) All Off 0 (None) All Off 1 Circuit 1 1 Circuit 2 + Circuit 1 2 Circuit 2 + Circuit 1 2 Circuit 1 + Circuit 2 3 Auxiliary Heat 1 3 Auxiliary Heat 1 4 Auxiliary Heat 2 4 Auxiliary Heat 2 Table 12. Heat pump control (1-step mechanical heating) (a) (b) Active Unit Mode Stage Indoor Fan Compressor Auxiliary Heat 1 Auxiliary Heat 2 Switchover Valve 1 Switchover Valve 2(a) Heat/Off Off Off Off Off Off Off Off Heat Stage 1 On Both Compressors Off Off Off Off Heat Auxiliary 1 On Both Compressors On Off Off Off Heat Auxiliary 2 On Both Compressors On On Off Off Emergency Heat Stage 1 On Off On Off Off Off Emergency Heat Stage 2 On Off On On Off Off Heat Defrost On Both Compressors On Off On(b) On(b) Cool Don’t Care Off Off Off Off On On Only units configured as an independent circuit heat pump will control the switchover valve 2 output. On units with independent circuits, only the circuit whose conditions are correct for defrost will enter defrost mode and energize the switchover valve. The other circuit's switchover valve will remain in its previous state until it has a defrost request or until the unit mode changes. Table 13. Heat pump control (2-step mechanical heating) Active Unit Mode Stage Indoor Fan Compressor Auxiliary Heat 1 Auxiliary Heat 2 Switchover Valve 1 Switchover Valve 2(a) Heat/Off Off Off Off Off Off Off Off Heat Stage 1 On Compressor 1 Off Off Off Off Heat Stage 2 On Both Compressors Off Off Off Off Heat Auxiliary 1 On Both Compressors On Off Off Off Heat Auxiliary 2 On Both Compressors On On Off Off SSP-SVX14C-EN 35 S t a rt - U p Table 13. Heat pump control (2-step mechanical heating) (continued) (a) (b) 36 Active Unit Mode Stage Indoor Fan Compressor Auxiliary Heat 1 Auxiliary Heat 2 Switchover Valve 1 Switchover Valve 2(a) Emergency Heat Stage 1 On Off On Off Off Off Emergency Heat Stage 2 On Off On On Off Off Heat Defrost On Both Compressors On Off On(b) On(b) Cool Don’t Care Off Off Off Off On On Only units configured as an independent circuit heat pump will control the switchover valve 2 output. On units with independent circuits, only the circuit whose conditions are correct for defrost will enter defrost mode and energize the switchover valve. The other circuit's switchover valve will remain in its previous state until it has a defrost request or until the unit mode changes. SSP-SVX14C-EN Service Test Modes for ReliaTel™ ™ Controls Test Modes Step Test Mode Upon power initialization, the RTRM performs selfdiagnostic checks to ensure that all internal controls are functional. It also checks the configuration parameters against the components connected to the system. The system LED located on the RTRM module is turned “O n ” within one second of power-up if internal operation is okay. This method initiates the different components of the unit, one at a time, by temporarily shorting across the two test terminals for 2 to 3 seconds. For the initial start-up of the unit, this method allows the technician to cycle a component “O n” and have up to one hour to complete the check. Service Test Mode will be ignored if a short is present across Test 1 and Test 2 at start-up. Use one of the following “ Te s t ” procedures to bypass some time delays and to start the unit at the control panel. Each step of unit operation can be activated individually by temporarily shorting across the “ Te s t ” terminals for 2 to 3 seconds. The system LED located on the RTRM module will blink when the test mode has been initiated. The unit can be left in any “ Te s t ” step for up to one hour before it will automatically terminate, or it can be terminated by opening the main power disconnect switch. Once the test mode has been terminated, the system LED will glow continuously and the unit will revert to the “ S y s t e m ” control. Resistance Test Mode This method can be used for start-up when a decade box for variable resistance outputs is available. This method initiates the different components of the unit, one at a time, when a specific resistance value is placed across the two test terminals. The unit will remain in the specific test mode for approximately one hour even though the resistance is left on the test terminals. There are three methods in which the “ Se r v i c e Te s t ” can be cycled at LTB-Test 1(T1) and LTB-Test 2 (T2). Table 14. Test mode states for SZVAV independent circuit heat pump units with auxiliary electric heat TEST STEP MODE FAN VFD COMMAND COMP 1 COMP 2 HEAT 1 HEAT 2 SOV1 SOV2 OHMS 1 FAN ON ON 58% (0 - 2.8 VDC) OFF OFF OFF OFF OFF OFF 2.2K 2 COOL 1 ON 86% (3.8 - 7.7 VDC) ON OFF OFF OFF ON ON 4.7K 3 COOL 2 ON 100% (5.6 - 10 VDC) ON ON OFF OFF ON ON 6.8K 4 HEAT 1 ON 100% (5.6 - 10 VDC) ON OFF OFF OFF OFF OFF 10K 5 HEAT 2 ON 100% (5.6 - 10 VDC) ON ON OFF OFF OFF OFF 15K 6 Heat 3 ON 100% (5.6 - 10 VDC) ON ON ON OFF OFF OFF 22K 7 Heat 4 ON 100% (5.6 - 10 VDC) ON ON ON ON OFF OFF 27K 8 Defrost ON 100% (5.6 - 10 VDC) ON ON ON OFF ON ON 33K 9 Emergency Heat ON 100% (5.6 - 10 VDC) OFF OFF ON ON OFF OFF 47K Auto Test Mode This method is not recommended for start-up due to the short timing between individual component steps. This method initiates the different components of the unit, one at a time, when a fixed jumper is installed across the test terminals. SSP-SVX14C-EN The unit will start the first test step and change to the next step every 30 seconds. At the end of the test mode, control of the unit will automatically revert to the applied “ Sy s t e m ” control method. For unit test steps, test modes, and step resistance values to cycle the various components, refer to Table 14, p. 37. 37 Troubleshooting Troubleshooting ReliaTel™ Controls WA R N I N G Li ve Electrical Components! Fai l ure t o fol l ow al l e le c tr ic a l s af et y pr ec a uti on s when exposed to li ve electrical components could r e s u l t i n d e a t h o r s e r i o u s i n j u r y. When it is necessary to work with li ve electrical components, have a qualified licensed electrician or other indi vidual who has been properly trained in handling li ve electrical components perform these tasks. outputs, and all of the external controls (relays, contactors, etc.) that the RTRM outputs energize, for each respective mode. Proceed to Step 6. 6. Step the system through all of the available modes, and verify operation of all outputs, controls, and modes. If a problem in operation is noted in any mode, you may leave the system in that mode for up to one hour while troubleshooting. Refer to the sequence of operations for each mode, to assist in verifying proper operation. Make the necessary repairs and proceed to Step 7 and Step 8. 7. If no abnormal operating conditions appear in the test mode, exit the test mode by turning the power “O ff” at the main power disconnect switch. The RTRM has the ability to provide the service personnel with some unit diagnostics and system status information. 8. Refer to the individual component test procedures if other microelectronic components are suspect. Before turning the main power disconnect switch “O ff,” follow the steps below to check the ReliaTel™ Refrigeration Module (RTRM). All diagnostics & system status information stored in the RTRM will be lost when the main power is turned “O ff”. System Status Checkout Procedure To prevent injury or death from electrocution, it is the responsibility of the technician to recognize this hazard and use extreme care when performing service procedures with the electrical power energized. N o t e : The J6 & J7 screw terminals must be tightened in order to accurately measure voltage in the required steps. 1. Verify that the system LED on the RTRM is burning continuously. If the LED is lit, go to Step 3. 2. If the LED is not lit, verify that 24 VAC is present between J1-1 and J1-2. If 24 VAC is present, proceed to Step 3. If 24 VAC is not present, check the unit main power supply, check transformer (TNS1). Proceed to Step 3 if necessary. 3. Utilizing ”Method 1”, p. 38 or ”Method 2”, p. 39 in the System Status Checkout Procedure section, check the following: • • • Method 1 If the Zone Sensor Module (ZSM) is equipped with a remote panel with LED status indication, you can check the unit within the space. If the ZSM does not have LED’s, use ”Method 2”, p. 39. BAYSENS010B, BAYSENS011B, BAYSENS119A, BAYSENS020A, BAYSENS021A, BAYSENS023A, BAYSENS109 and BAYSENS110 all have the remote panel indication feature. The LED descriptions are listed below. • • System status Heating status Cooling status N o t e : If a System failure is indicated, proceed to Step 4. If no failures are indicated, proceed to Step 5. 4. If a System failure is indicated, recheck Step 1 and Step 2. If the LED is not lit in Step 1, and 24 VAC is present in Step 2, then the RTRM has failed. Replace the RTRM. 5. If no failures are indicated, use one of the TEST mode procedures described in the ”Service Test Modes chapter,” p. 37 to start the unit. This procedure will allow you to check all of the RTRM 38 “ Sy s t e m S t a t u s ” is checked by using one of the following two methods: • L E D 1 ( Sy s t e m ) – “O n ” during normal operation. – “O ff” if a system failure occurs or the LED fails. – “ F l a s h i n g ” indicates test mode LED 2 (Heat) – “O n ” when the heat cycle is operating. – “O ff” when the heat cycle terminates or the LED fails. – “ F l a s h i n g ” indicates a heating failure. LED 3 (Cool) – “O n ” when the cooling cycle is operating. – “O ff” when the cooling cycle terminates or the LED fails. – “ F l a s h i n g ” indicates a cooling failure. The following information describes the complete listing of failure indication causes. SSP-SVX14C-EN Tr o u b l e s h o o t i n g System Failure • H e a t O p e r a t i n g = approximately 32 VDC Check the voltage between terminals 6 and 9 on J6, it should read approximately 32 VDC. If no voltage is present, a System failure has occurred. Refer to Step 4 in the previous section for the recommended troubleshooting procedure. • H e a t O ff = less than 1 VDC, approximately 0.75 VDC • H e a t i n g F a i l u r e = voltage alternates between 32 VDC & 0.75 VDC Cooling Failure Measure the voltage between terminals J6-8 & J6-6. 1. Cooling and heating set point (slide pot) on the zone sensor has failed. Refer to the ”Programmable & Digital Zone Sensor Test”, p. 41. • C o o l O p e r a t i n g = approximately 32 VDC • C o o l O ff = less than 1 VDC, approximately 0.75 VDC • C o o l i n g F a i l u r e = voltage alternates between 32 VDC & 0.75 VDC 2. Zone temperature thermistor ZTEMP on ZTS failed. Refer to the ”Programmable & Digital Zone Sensor Test”, p. 41. 3. CC1 or CC2 24 VAC control circuit has opened, check CC1 & CC2 coils, and any of the controls below that apply to the unit (HPC1, HPC2, DTL1, DTL2). 4. LPC1 has opened during the 3 minute minimum “on time” during 4 consecutive compressor starts, check LPC1 or LPC2 by testing voltage between the J1-8 & J3-2 terminals on the RTRM and ground. If 24 VAC is present, the LPCs have not tripped. If no voltage is present, LPCs have tripped. Simultaneous Heat and Cool Failure WA R N I N G Li ve Electrical Components! Fai l ure t o fol l ow al l e le c tr ic a l s af et y pr ec a uti on s when exposed to li ve electrical components could r e s u l t i n d e a t h o r s e r i o u s i n j u r y. When it is necessary to work with li ve electrical components, have a qualified licensed electrician or other indi vidual who has been properly trained in handling li ve electrical components perform these tasks. • Emergency Stop is activated. Method 2 The second method for determining system status is done by checking voltage readings at the RTRM (J6). The system indication descriptions and the approximate voltages are listed below. System Failure Measure the voltage between terminals J6-9 & J6-6. • N o r m a l O p e r a t i o n = approximately 32 VDC • S y s t e m F a i l u r e = less than 1 VDC, approximately 0.75 VDC • Te s t M o d e = voltage alternates between 32 VDC & 0.75 VDC Heat Failure Measure the voltage between terminals J6-7 & J6-6. SSP-SVX14C-EN Cool Failure To use LED’s for quick status information at the unit, purchase a BAYSENS010B ZSM and connect wires with alligator clamps to terminals 6 through 10. Connected each respective terminal wire (6 through 10) from the Zone Sensor to the unit J6 terminals 6 through 10. N o t e : If the system is equipped with a programmable zone sensor, (BAYSENS119A, or BAYSENS023A), the LED indicators will not function while the BAYSENS010A is connected. Resetting Cooling and Heating Lockouts Cooling Failures and Heating Lockouts are reset in an identical manner.”Method 1”, p. 39 explains resetting the system from the space; ”Method 2”, p. 39 explains resetting the system at the unit. N o t e : Before resetting Cooling Failures and Heating Lockouts check the Failure Status Diagnostics by the methods previously explained. Diagnostics will be lost when the power to the unit is disconnected. Method 1 To reset the system from the space, turn the M O D E selection switch at the zone sensor to the O F F position. After approximately 30 seconds, turn the M O D E selection switch to the desired mode, i.e. H E AT, C O O L , or A U TO. Method 2 To reset the system at the unit, cycle the unit power by turning the disconnect switch O F F and then O N Lockouts can be cleared through the building management system. Refer to the building management system instructions for more information. Zone Temperature Sensor (ZTS) Service Indicator The ZSM SERVICE LED is a generic indicator that will signal the closing of a Normally Open switch at any time, providing the Indoor Motor (IDM) is operating. 39 Tr o u b l e s h o o t i n g This indicator is usually used to indicate an airside fan failure. The RTRM will ignore the closing of this Normally Open switch for 2 (±1) minutes. This helps prevent nuisance SERVICE LED indications. Temperature Tests N o t e : These procedures are not for programmable or digital models and are conducted with the Zone Sensor Module electrically removed from the system. Test 1 - Zone Temperature Thermistor (ZTEMP) This component can be tested by measuring the resistance between terminals 1 and 2 on the Zone Temperature Sensor. See Table 15, p. 40 for typical indoor temperatures, and corresponding resistive values. Table 15. Typical indoor temperatures and values (continued) Zone Temperature Nominal Resistance 65°F or 18.3°C 13.49 Kohms 70°F or 21.1°C 11.9 Kohms 75°F or 23.9°C 10.50 Kohms 80°F or 26.7°C 9.3 Kohms 85°F or 29.4°C 8.25 Kohms 90°F or 32.2°C 7.3 Kohms Test 2 - Cooling Set Point (CSP) and Heating Set Point (HSP) C o o l S P = Terminals 2 and 3 Range = 100 to 900 Ohms approximate H e a t S P = Terminals 2 and 5 Range = 100 to 900 Ohms approximate Table 15. Typical indoor temperatures and values Zone Temperature Nominal Resistance 50°F or 10.0°C 19.9 Kohms 55°F or 12.8°C 17.47 Kohms 60°F or 15.6°C 15.3 Kohms Test 3 - System Mode and Fan Selection The combined resistance of the M O D E selection switch and the FA N selection switch can be measured between terminals 2 and 4 on the Zone Sensor. The possible switch combinations are listed in Table 16, p. 40 with their corresponding resistance values. Table 16. Test 3 - system mode and fan selection 40 Resistance Valves(Ohms) Zone Sensor Unit/Fan Mode Local Unit Mode Local Fan Mode 2.32K Off/Auto Off Auto 4.87K Cool/Auto Cool Auto 7.68K Auto/Auto Auto Auto 10.77K Off/On Off On 13.32K Cool/On Cool On 16.13K Auto/On Auto On 19.48K Heat/Auto Heat Auto 27.93K Heat/On Heat On 35.0K Emergency Heat/Auto Emergency Heat Auto 43.45K Emergency Heat/On Emergency Heat On Out of Range (Short) INVALID/Short Invalid (CV), Auto (VAV) Invalid Out of Range (Open) INVALID/Open Invalid (CV), Off (VAV) Invalid SSP-SVX14C-EN Tr o u b l e s h o o t i n g Test 4 - LED Indicator Test (SYS ON, HEAT, & COOL) WA R N I N G Li ve Electrical Components! Fai l ure t o fol l ow al l e le c tr ic a l s af et y pr ec a uti on s when exposed to li ve electrical components could r e s u l t i n d e a t h o r s e r i o u s i n j u r y. When it is necessary to work with li ve electrical components, have a qualified licensed electrician or other indi vidual who has been properly trained in handling li ve electrical components perform these tasks. J6-11. WA R N I N G Li ve Electrical Components! Fa il u re to f ol lo w a ll el e ct ri c al s a fe ty p re c au ti ons when exposed to li ve electrical components could r e s u l t i n d e a t h o r s e r i o u s i n j u r y. When it is necessary to work with li ve electrical components, have a qualified licensed electrician or other indi vidual who has been properly trained in handling li ve electrical components perform these tasks. Method 1 2. Disconnect wires from J6-11 and J6-12. Measure the voltage between J6-11 and J6-12, should be about 32 VDC. Testing the LED using a meter with diode test function. Test both forward and reverse bias. Forward bias should measure a voltage drop of 1.5 to 2.5 volts, depending on your meter. Reverse bias will show an Over Load, or open circuit indication if LED is functional. 3. Reconnect wires to terminals J6-11 and J6-12. Measure voltage again between J6-11 and J6-12, voltage should flash high and low every 0.5 seconds. The voltage on the low end will measure about 19 VDC, while the voltage on the high end will measure from approximately 24 to 38 VDC. Method 2 4. Verify all modes of operation, by running the unit through all of the steps in ”Service Test Modes for ReliaTel Controls,” p. 37. Testing the LED with an analog Ohmmeter. Connect Ohmmeter across LED in one direction, then reverse the leads for the opposite direction. The LED should have at least 100 times more resistance in reverse direction, as compared with the forward direction. If high resistance in both directions, LED is open. If low in both directions, LED is shorted. Method 3 To test LED’s with ZSM connected to unit, test voltages at LED terminals on ZSM. A measurement of 32 VDC, across an unlit LED, means the LED has failed. I m p o rt a n t : Measurements should be made from LED common (ZSM terminal 6 to respective LED terminal). Programmable & Digital Zone Sensor Test 5. After verifying proper unit operation, exit the test mode. Turn the fan on continuously at the ZSM, by pressing the button with the fan symbol. If the fan comes on and runs continuously, the ZSM is good. If you are not able to turn the fan on, the ZSM is defective. RLCI Loss of Communications If the RLCI loses input from the building management system, the RTRM will control in the default mode after approximately 15 minutes. If the RTRM loses the Heating and Cooling setpoint input, the RTRM will control in the default mode instantaneously. The temperature sensing thermistor in the Zone Sensor Module is the only component required for the “ D e f a u l t M o d e” to operate. Testing Serial Communication Voltage 1. Verify 24 VAC is present between terminals J6-14 & SSP-SVX14C-EN 41 Maintenance WA R N I N G Remove any accumulation of dust and/or dirt from the unit casing. H a z a r d o u s Vo l t a g e w / C a p a c i t o r s ! F a i l u r e t o d i s c o n n e c t p o w e r a n d d i s ch a r g e capacitor s before servicing could result in death or s e r i o u s i n j u r y. D i s c o n n e c t a l l e l e c t r i c p o w e r, i n c l u d i n g r e m o t e d i s c o n n e c t s a n d d i s ch a r g e a l l m o t o r s t a rt / r u n c a p a c i t o r s b e f o r e s e r v i c i n g . F o l l o w p r o p e r l o ck o u t / tagout procedures to ensure the power cannot be i n a d v e rt e n t l y e n e r g i z e d . F o r v a r i a b l e f r e q u e n c y dri ves or other energy storing components p r o v i d e d b y Tr a n e o r o t h e r s , r e f e r t o t h e a p p r o p r i a t e m a n u f a c t u r e r ’s l i t e r a t u r e f o r a l l o w a b l e w a i t i n g p e r i o d s f o r d i s ch a r g e o f c a p a c i t o r s . Ve r i f y w i t h a n a p p r o p r i a t e v o l t m e t e r t h a t a l l c a p a c i t o r s h a v e d i s ch a r g e d . For ad di ti on al i n for m at io n rega rdi ng t he s a fe d i s ch a r g e o f c a p a c i t o r s , s e e P R O D - S V B 0 6 A - E N . N OT I C E O p e r a t i n g U n d e r Va c u u m ! Do not operate or apply power to the compressor whi l e un de r a va c uu m . Fai l ure to fo ll ow t he s e instructions will result in compressor failure. Perform all of the indicated maintenance procedures at the intervals scheduled. This will prolong the life of the unit and reduce the possibility of costly equipment failure. Monthly Conduct the following maintenance inspections once per month. Inspect the control panel wiring to ensure that all connections are tight and that the insulation is intact. N o t e : Condenser fan motors are permanently lubricated. Check refrigerant piping and fittings for leaks Inspect the condenser coils for dirt and debris. If the coils appear dirty, clean them. Coil Cleaning Regular coil maintenance, including annual cleaningenhances the unit's operating efficiency by minimizing: • • • • compressor head pressure and amperage draw water carryover fan brake horsepower static pressure losses At least once each year — or more often if the unit is located in a “dirty” environment — clean the coil using the instructions outlined below. Be sure to follow these instructions as closely as possible to avoid damaging the coils. To clean refrigerant coils, use a soft brush and a sprayer. Contact your local Parts Center for appropriate detergents. 1. Remove enough panels from the unit to gain safe access to coil. 2. Straighten any bent coil fins with a fin comb. Check unit wiring to ensure all connections are tight and that the wiring insulation is intact. 3. Remove loose dirt and debris from both sides of the coil with a soft brush. Inspect the condenser coils for dirt and debris. If the coils appear dirty, clean them. 4. Mix the detergent with water according to the manufacturer's instructions. If desired, heat the solution to 150° F maximum to improve its cleansing capability. With the unit operating in the cooling mode, check the suction and discharge pressures and compare them with Pressure Curve values in unit Service Facts. Record these readings on the ”Maintenance Log”, p. 43. Annually (Cooling Season) The following maintenance procedures must be performed at the beginning of each cooling season to ensure efficient unit operation. 42 Remove corrosion from any surface and repaint. Check the gasket around the control panel door to ensure it fits correctly and is in good condition to prevent water leakage. 5. Pour the cleaning solution into the sprayer. 6. Spray the leaving-airflow side of the coil first; then spray the opposite side of the coil. Allow the cleaning solution to stand on the coil for five minutes. 7. Rinse both sides of the coil with cool, clean water. 8. Inspect both sides of the coil; if it still appears to be dirty, repeat Step 7 and 8. Perform all of the monthly maintenance inspections. 9. Reinstall all of the components and panels removed in Step 1; then restore power to the unit. With the unit operating, check unit superheat and record the reading in the ”Maintenance Log”, p. 43. 10. Using a fin comb, straighten any coil fins that were inadvertently bent during the cleaning process. SSP-SVX14C-EN SSP-SVX14C-EN Dry Bulb Wet Bulb (C1) (C2) Suction Pressure (C1) (C2) Discharge Pressure Compressor Note: Perform each inspection once per month (during cooling season) while unit is operating Date Ambient Temp. (°F) Evaporator Entering Air Circuit #1 Circuit #2 Superheat (°F) (at compressor) Circuit #1 Circuit #2 Subcooling (°F) (at service valve) Maintenance Maintenance Log 43 Wiring Diagram Matrix Table 17. Wiring schematics R-410A heat pump Diagram Number Diagram Type Unit Model Numbers 2313-0405 Power/Control Diagram TWA120D30RAA, TWA120D30TAA, TWA120D3HRAA, TWA120D3HTAA, TWA120D30UAA, TWA120D30WAA, TWA120D3HUAA, TWA120D3HWAA, TWA240E30RAA, TWA240E30TAA, TWA240E3HRAA, TWA240E3HTAA, TWA240E30UAA, TWA240E30WAA, TWA240E3HUAA, TWA240E3HWAA Power/Control Diagram TWA061DD0RAA, TWA061DD0TAA, TWA061DDHRAA, TWA061DDHTAA, TWA061DD0UAA, TWA061DD0WAA, TWA061DDHUAA, TWA061DDHWAA, TWA073D30RAA, TWA073D30TAA, TWA073D3HRAA, TWA073D3HTAA, TWA073D30UAA,TWA073D30WAA, TWA073D3HUAA, TWA073D3HWAA, TWA073D40RAA, TWA073D40TAA, TWA073D4HRAA, TWA073D4HTAA, TWA073D40UAA, TWA073D40WAA, TWA073D4HUAA, TWA073D4HWAA, TWA073DW0RAA, TWA073DW0TAA, TWA073DWHRAA, TWA073DWHTAA, TWA073DW0UAA, TWA073DW0WAA, TWA073DWHUAA, TWA073DWHWAA, TWA073DK0RAA, TWA073DK0TAA, TWA073DKHRAA, TWA073DKHTAA, TWA073DK0UAA, TWA073DK0WAA, TWA073DKHUAA, TWA073DKHWAA, TWA076DD0RAA, TWA076DD0TAA, TWA076DDHRAA, TWA076DDHTAA, TWA076DD0UAA, TWA076DD0WAA, TWA076DDHUAA, TWA076DDHWAA, TWA090D30RAA, TWA090D30TAA, TWA090D3HRAA, TWA090D3HTAA, TWA090D30UAA, TWA090D30WAA, TWA090D3HUAA, TWA090D3HWAA, TWA090D40RAA, TWA090D40TAA, TWA090D4HRAA, TWA090D4HTAA, TWA090D40UAA, TWA090D40WAA, TWA090D4HUAA, TWA090D4HWAA, TWA090DW0RAA, TWA090DW0TAA, TWA090DWHRAA, TWA090DWHTAA, TWA090DW0UAA, TWA090DW0WAA, TWA090DWHUAA, TWA090DWHWAA, TWA090DK0RAA, TWA090DK0TAA, TWA090DKHRAA, TWA090DKHTAA, TWA090DK0UAA, TWA090DK0WAA, TWA090DKHUAA, TWA090DKHWAA, TWA101DD0RAA, TWA101DD0TAA, TWA101DDHRAA, TWA101DDHTAA, TWA101DD0UAA, TWA101DD0WAA, TWA101DDHUAA, TWA101DDHWAA, TWA120D40RAA, TWA120D40TAA, TWA120D4HRAA, TWA120D4HTAA, TWA120D40UAA, TWA120D40WAA, TWA120D4HUAA, TWA120D4HWAA, TWA120DW0RAA, TWA120DW0TAA, TWA120DWHRAA, TWA120DWHTAA, TWA120DW0UAA, TWA120DW0WAA, TWA120DWHUAA, TWA120DWHWAA, TWA120DK0RAA, TWA120DK0TAA, TWA120DKHRAA, TWA120DKHTAA, TWA120DK0UAA, TWA120DK0WAA, TWA120DKHUAA, TWA120DKHWAA, TWA156ED0RAA, TWA156ED0TAA, TWA156EDHRAA, TWA156EDHTAA, TWA156ED0UAA, TWA156ED0WAA, TWA156EDHUAA, TWA156EDHWAA, TWA180E30RAA, TWA180E30TAA, TWA180E3HRAA, TWA180E3HTAA, TWA180E30UAA, TWA180E30WAA, TWA180E3HUAA, TWA180E3HWAA, TWA180E40RAA, TWA180E40TAA, TWA180E4HRAA, TWA180E4HTAA, TWA180E40UAA, TWA180E40WAA, TWA180E4HUAA, TWA180E4HWAA, TWA180EW0RAA, TWA180EW0TAA, TWA180EWHRAA, TWA180EWHTAA, TWA180EW0UAA, TWA180EW0WAA, TWA180EWHUAA, TWA180EWHWAA, TWA180EK0RAA, TWA180EK0TAA, TWA180EKHRAA, TWA180EKHTAA, TWA180EK0UAA, TWA180EK0WAA, TWA180EKHUAA, TWA180EKHWAA, TWA201ED0RAA, TWA201ED0TAA, TWA201EDHRAA, TWA201EDHTAA, TWA201ED0UAA, TWA201ED0WAA, TWA201EDHUAA, TWA201EDHWAA, TWA240E40RAA, TWA240E40TAA, TWA240E4HRAA, TWA240E4HTAA, TWA240E40UAA, TWA240E40WAA, TWA240E4HUAA, TWA240E4HWAA, TWA240EW0RAA, TWA240EW0TAA, TWA240EWHRAA, TWA240EWHTAA, TWA240EW0UAA, TWA240EW0WAA, TWA240EWHUAA, TWA240EWHWAA, TWA240EK0RAA, TWA240EK0TAA, TWA240EKHRAA, TWA240EKHTAA, TWA240EK0UAA, TWA240EK0WAA, TWA240EKHUAA, TWA240EKHWAA Connection Diagram TWA061DD0RAA, TWA061DD0TAA, TWA061DDHRAA, TWA061DDHTAA, TWA061DD0UAA, TWA061DD0WAA, TWA061DDHUAA, TWA061DDHWAA, TWA073D30RAA, TWA073D30TAA, TWA073D3HRAA, TWA073D3HTAA, TWA073D30UAA, TWA073D30WAA, TWA073D3HUAA, TWA073D3HWAA, TWA073D40RAA, TWA073D40TAA, TWA073D4HRAA, TWA073D4HTAA, TWA073D40UAA, TWA073D40WAA, TWA073D4HUAA, TWA073D4HWAA, TWA073DW0RAA, TWA073DW0TAA, TWA073DWHRAA, TWA073DWHTAA, TWA073DW0UAA, TWA073DW0WAA, TWA073DWHUAA, TWA073DWHWAA, TWA073DK0RAA, TWA073DK0TAA, TWA073DKHRAA, TWA073DKHTAA, TWA073DK0UAA, TWA073DK0WAA, TWA073DKHUAA, TWA073DKHWAA, TWA076DD0RAA, TWA076DD0TAA, TWA076DDHRAA, TWA076DDHTAA, TWA076DD0UAA, TWA076DD0WAA, TWA076DDHUAA, TWA076DDHWAA, TWA090D30RAA, TWA090D30TAA, TWA090D3HRAA, TWA090D3HTAA, TWA090D30UAA, TWA090D30WAA, TWA090D3HUAA, TWA090D3HWAA, TWA090D40RAA, TWA090D40TAA, TWA090D4HRAA, TWA090D4HTAA, TWA090D40UAA, TWA090D40WAA, TWA090D4HUAA, TWA090D4HWAA, TWA090DW0RAA, TWA090DW0TAA, TWA090DWHRAA, TWA090DWHTAA, TWA090DW0UAA, TWA090DW0WAA, TWA090DWHUAA, TWA090DWHWAA, TWA090DK0RAA, TWA090DK0TAA, TWA090DKHRAA, TWA090DKHTAA, TWA090DK0UAA, TWA090DK0WAA, TWA090DKHUAA, TWA090DKHWAA, TWA101DD0RAA, TWA101DD0TAA, TWA101DDHRAA, TWA101DDHTAA, TWA101DD0UAA, TWA101DD0WAA, TWA101DDHUAA, TWA101DDHWAA, TWA120D40RAA, TWA120D40TAA, TWA120D4HRAA, TWA120D4HTAA, TWA120D40UAA, TWA120D40WAA, TWA120D4HUAA, TWA120D4HWAA, TWA120DW0RAA, TWA120DW0TAA, TWA120DWHRAA, TWA120DWHTAA, TWA120DW0UAA, TWA120DW0WAA, TWA120DWHUAA, TWA120DWHWAA, TWA120DK0RAA, TWA120DK0TAA, TWA120DKHRAA, TWA120DKHTAA, TWA120DK0UAA, TWA120DK0WAA, TWA120DKHUAA, TWA120DKHWAA 2313-0406 2313-0419 44 SSP-SVX14C-EN Wiring Diagram Matrix Table 17. Wiring schematics R-410A heat pump (continued) Diagram Number Diagram Type Unit Model Numbers Connection Diagram TWA120D30RAA, TWA120D30TAA, TWA120D3HRAA, TWA120D3HTAA, TWA120D30UAA, TWA120D30WAA, TWA120D3HUAA, TWA120D3HWAA 2313-0429 Connection Diagram TWA156ED0RAA, TWA156ED0TAA, TWA156EDHRAA, TWA156EDHTAA, TWA156ED0UAA, TWA156ED0WAA, TWA156EDHUAA, TWA156EDHWAA, TWA180E30RAA, TWA180E30TAA, TWA180E3HRAA, TWA180E3HTAA, TWA180E30UAA, TWA180E30WAA, TWA180E3HUAA, TWA180E3HWAA, TWA180E40RAA, TWA180E40TAA, TWA180E4HRAA, TWA180E4HTAA, TWA180E40UAA, TWA180E40WAA, TWA180E4HUAA, TWA180E4HWAA, TWA180EW0RAA, TWA180EW0TAA, TWA180EWHRAA, TWA180EWHTAA, TWA180EW0UAA, TWA180EW0WAA, TWA180EWHUAA, TWA180EWHWAA, TWA180EK0RAA, TWA180EK0TAA, TWA180EKHRAA, TWA180EKHTAA, TWA180EK0UAA, TWA180EK0WAA, TWA180EKHUAA, TWA180EKHWAA, TWA201ED0RAA, TWA201ED0TAA, TWA201EDHRAA, TWA201EDHTAA, TWA201ED0UAA, TWA201ED0WAA, TWA201EDHUAA, TWA201EDHWAA, TWA240E40RAA, TWA240E40TAA, TWA240E4HRAA, TWA240E4HTAA, TWA240E40UAA, TWA240E40WAA, TWA240E4HUAA, TWA240E4HWAA, TWA240EW0RAA, TWA240EW0TAA, TWA240EWHRAA, TWA240EWHTAA, TWA240EW0UAA, TWA240EW0WAA, TWA240EWHUAA, TWA240EWHWAA, TWA240EK0RAA, TWA240EK0TAA, TWA240EKHRAA, TWA240EKHTAA, TWA240EK0UAA, TWA240EK0WAA, TWA240EKHUAA, TWA240EKHWAA 2313-0430 Connection Diagram TWA240E30RAA, TWA240E30TAA, TWA240E3HRAA, TWA240E3HTAA, TWA240E30UAA, TWA240E30WAA, TWA240E3HUAA, TWA240E3HWAA 2313-0420 Note: Wiring diagrams are available through e-Library or by contacting your local sales office. SSP-SVX14C-EN 45 Notes 46 SSP-SVX14C-EN Notes SSP-SVX14C-EN 47 Notes The manufacturer 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, the manufacturer offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.IRCO.com. The manufacturer has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. ©2014 Trane All rights reserved SSP-SVX14C-EN 14 Jan 2014 We are committed to using environmentally Supersedes SSP-SVX14B-EN (December 2011) conscious print practices that reduce waste.
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