Installation, Operation, and Maintenance Split System Air Conditioners Odyssey™ ™ R-22 Dry Charge Heat Pump Condenser — 7.5, 10, 15 and 20 Tons (60 Hz) TWA090A***G* TWA120A***G* TWA180B***G* TWA240B***G* 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.
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.
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 .
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) . . . . . . . . .
Ta b l e o f C o n t e n t s Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . 39 Charging Charts and Superheat . . . . . . . . . . . . . . Wiring Diagram Matrix . . . . . . . . . . . . . . . . . . . . 40 Dimensional Data. . . . . . . . . . . . . . . . . . . . . . . . . . . Charging Charts and Superheat . . . . . . . . . . . . . . Charging Charts and Superheat . . . . . . . . . . . . . .
Model Number Description Heat Pump Condenser TWA 120 A 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.
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.
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.
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.
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) TWA090A 39.125 (993.8) 42.125 (1070) 36 (914.4) TWA120A 39.125 (993.8) 52.125 (1324) 40 (1016) TWA180B, TWA240B 45.125 (1146.1) 52.
Dimensional Data Figure 3. 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.
Dimensional Data Figure 4. 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.
Dimensional Data Figure 5. 15, 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.
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 7.5 TWA090A 394 340 117 86 58 79 10 TWA120A 509 438 127 121 72 118 15 TWA180B 898 765 202 192 181 190 20 TWA240B 981 848 254 266 147 181 Figure 6. TWA090, 120 Figure 7.
Installation Refrigerant Piping Guidelines Figure 8. Allowable elevation difference: Cooling only TTA above indoor unit Contact m an ufacturer for review Figure 9.
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 .
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 .
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 3, p. 18 for starting change. If refrigerant adjustments are needed because of length of line, refer to ”Charging Charts and Superheat,” p. 25. Insulating and Isolating Refrigerant Lines Charge by weight through the gauge port on the liquid line.
Installation Table 3. Estimated charge levels at ARI rated line lengths (25 feet) Refrigerant Charge Per Circuit Matched Set Circuit 1 Circuit 2 Liquid Line Diameter Vapor Line Diameter TWA090A w/TWE090A 20.6 NA 0.625 (5/8”) 1.375 (1 3/8”) TWA120A w/TWE120A 27.9 NA 0.5 (1/2”) 1.375 (1 3/8”) TWA180B w/ TWE180B 22.9 24.2 0.5 (1/2") 1.375 (1 3/8") TWA240B w/ TWE240B 23.5 23.5 0.625 (5/8") 1.375 (1 3/8") Liquid Charging This procedure is accomplished with the unit operating.
Installation wiring diagrams for accessories are shipped with the accessory. 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.
Installation Field Wiring Figure 13. Night setback panel field wiring Figure 14.
Installation Figure 15. Thermostat field wiring X X Refrigerant Circuit Figure 16.
Installation Figure 17.
Electrical Data Table 4. Electrical characteristics — motors — heat pumps — 60 Hz Compressor Motor Tons 7.5 10 15 20 Unit Model Number Condenser Fan Motor Amps No. TWA090A3 1 TWA090A4 TWA120A3 TWA120A4 TWA180B3 TWA180B4 TWA240B3 TWA240B4 Volts Phase RLA LRA (Ea.) (Ea.) Amps No. 208-230 3 22.4 164 1 1 460 3 10.9 100 1 208-230 3 30.1 225 1 460 3 15.5 114 1 208-230 3 22.4 164 1 460 3 10.9 100 1 208-230 3 30.1 225 1 460 3 15.
Charging Charts and Superheat Figure 18. TWA090A Figure 20.
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.
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.
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.
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.
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.
S t a rt - U p Table 7. 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 8. Heat pump operation with a zone sensor with lead/lag enabled Table 8.
S t a rt - U p Table 10.
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.
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.
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.
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.
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.
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.
SSP-SVX15C-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.
Wiring Diagram Matrix Table 14.
