SM CS Series Heat pump SM024 | SM036 | SM048 | SMO60 | SM070 8 733 920 846 (2013/11) Installation, Operation and Maintenance Manual
| SM CS Series Heat Pump CONTENTS Maintenance ...................................................................20 Model Nomenclature.......................................................... 3 Key to Symbols.................................................................. 3 Unit Check-Out Sheet.......................................................21 Safety Warnings................................................................ 3 Troubleshooting ..................................................
SM CS Series Heat Model Nomenclature | 3 MODEL NOMENCLATURE SM 024 - 1 CS C - F SERIES WATER CONNECTIONS SM F - Front SIZE COAX OPTIONS 024 036 048 060 070 C - Copper N - Cupro-Nickel CABINET CONFIGURATION CS - Condensing Section VOLTAGE DESIGNATIONS 1 - 208/1/60 & 230/1/60 Revision Level A KEY TO SYMBOLS Warnings Warnings in this document are identified by a warning triangle printed against a grey background.
| Standard SM CS package SM CS Series Heat Pump STANDARD SM CS PACKAGE MOVING AND STORAGE If the equipment is not needed for immediate installation upon its arrival at the job site, it should be left in its shipping carton and stored in a clean, dry area. Units must only be stored or moved in the normal upright position as indicated by the “UP” arrows on each carton at all times.
SM CS Series Heat Piping | 5 Air Handler Locate the air handler unit in an indoor area that allows easy removal of the filter and access panels, and has enough room for service personnel to perform maintenance or repair. Provide sufficient room to make electrical and duct connections. If the unit is located in a confined space such as a closet, provisions must be made for return air to freely enter the space. On horizontal units, allow adequate room below the unit for a condensate drain trap.
| Electrical SM CS Series Heat Pump ELECTRICAL 6 Refer to electrical component box layout. (Figure #4) Field wiring must comply with local and national electric codes. 1 5 Power to the unit must be within the operating voltage range indicated on the unit nameplate or on the performance data sheet. 4 2 Operation of unit on improper line voltage or with excessive phase imbalance will be hazardous to the unit, constitutes abuse and may void the warranty.
SM CS Series Heat Electrical | 7 Safety Devices and the UPM Controller 13 If the thermostat is provided with a malfunction light powered off of the hot (R) side of the transformer, then the thermostat malfunction light connection should be connected directly to the (ALR) contact on the unit’s UPM board. 11 12 1 Each unit is factory provided with a Unit Protection Module (UPM) that controls the compressor operation and monitors the safety controls that protect the unit.
| Electrical • SM CS Series Heat Pump Evaporator freeze protection sensor, mounted after the thermal expansion device and the evaporator, monitors refrigerant temperature between the evaporator coil and thermal expansion valve. If temperature drops below or remains at freeze limit trip for 30 seconds, the controller will shut down the compressor and enter into a soft lockout condition. The default freeze limit trip is 30°F.
SM CS Series Heat • Electrical | 9 active. The LED will flash (three (3) times) the code associated with this alarm condition. If this alarm occurs 2 times (or 4 if Dip switch is set to 4) within an hour the UPM controller will enter into a hard lockout condition. It will constantly monitor the refrigerant temperature with the sensor mounted close to the evaporator between the thermal expansion valve and evaporator coil as shown in Figure #5.
| Options SM CS Series Heat Pump OPTIONS DPS Water Flow Proving Number of factory installed options are available on SM Series of Heat Pumps. The following details the purpose, function and components of each option. The DPS water flow proving switch is a factory installed option available for the SM series. The DPS prevents compressor operation if there is inadequate water flow through the water to refrigerant heat exchanger in the heat pump.
SM CS Series Heat Heat Recovery Package | 11 To identify a Flash Code number, count the number of consecutive flashes. Every time the module powers up, the last ALERT Flash Code that occurred prior to shut down is displayed for one minute.Heat Recovery Package 5. Once drained the tank should be flushed with cold water until the water leaving the drain hose is clear and free of sediment. 6. Close all valves and remove the drain hose. 7. Install HR water piping.
| Heat Recovery Package SM CS Series Heat Pump Water Tank Refill Initial Start-Up 1. Open the cold water supply to the tank. 2. Open a hot water faucet to vent air from the system until water flows from the faucet, then close. 3. Depress the hot water tank pressure relief valve handle to ensure there is no air remaining in the tank. 4. Carefully inspect all plumbing for water leaks. Correct as required. 5. Purge all air from HR by depressing the schrader valve on the HR Unit.
SM CS Series Heat Sequence of Operation | 13 SEQUENCE OF OPERATION Heating Mode Cooling Mode The first two stages of heating (Y1 & Y2) operate in the same manner as cooling, but with the reversing valve de-energized. On a call for auxiliary heat (W1), the fan ramps up to auxiliary heat air flow immediately and the electric heater package is energized along with the compressor. Energizing the “O” terminal energizes the unit reversing valve thus placing the unit into cooling mode.
| Sequence of Operation SM CS Series Heat Pump UPM Sequence of Operation (SOO) Flow Chart Y1=1 NO YES Power/Switchs/Sensor Status Check V > 18VAC NO Lockout Can Be Set To 4 Via Dip Switch YES HPC = 1 Blink Code On Status LED Soft Lockout Record Alarm Start Counter (If Applicable) NO COUNT = 2 YES NO YES YES LPC = 1 Start Timer NO NO YES FRZ > TEMP LIM NO Start Timer TIME > 30 SEC YES CC Output = Off NO YES CON > 0 TIME > 120 SEC Blink Code On Status LED Report Alarm Fault H
SM CS Series Heat Application Considerations | 15 APPLICATION CONSIDERATIONS pressure must always be maintained in the heat exchanger. This can be accomplished with either control valve or a bladder type expansion tank. When using a single water well to supply both domestic water and the heat pump care must be taken to insure that the well can provide sufficient flow for both. In well water applications a slow closing solenoid valve must be used to prevent water hammer.
| Application Considerations SM CS Series Heat Pump Cooling Tower/Boiler Systems Consult the specification sheets for piping sizes. The cooling tower and boiler water loop temperature is usually maintained between 50° F to 100 ° F to assure adequate cooling and heating performance. Do not overtighten the connections. Flexible hoses should be used between the unit and the rigid system to avoid possible vibration In the cooling mode, heat is rejected from the unit into the water loop.
SM CS Series Heat Application Considerations | 17 Diagram shows typical installation and is for illustration purposes only. Ensure access to Heat Pump is not restricted.
| Application Considerations SM CS Series Heat Pump Geothermal Systems Closed loop and pond applications require specialized design knowledge. No attempt at these installations should be made unless the dealer has received specialized training. Utilizing the Ground Loop Pumping Package (GLP), makes the installation easy. Anti-freeze solutions are utilized when low evaporating conditions are expected to occur. Refer to the GLP installation manuals for more specific instructions.
SM CS Series Heat System Checkout | 19 SYSTEM CHECKOUT UNIT START-UP After completing the installation, and before energizing the unit, the following system checks should be made: 1. Verify that the supply voltage to the heat pump is in accordance with the nameplate ratings. 2. Make sure that all electrical connections are tight and secure. 3. Check the electrical fusing and wiring for the correct size. 1. Set the thermostat to the highest setting. 2.
| Maintenance SM CS Series Heat Pump MAINTENANCE 2. An annual “checkup” is recommended by a licensed refrigeration mechanic. Recording the performance measurements of volts, amps, and water temperature differences (both heating and cooling) is recommended. This data should be compared to the information on the unit’s data plate and the data taken at the original startup of the equipment. 3. Lubrication of the blower motor is not required, however may be performed on some motors to extend motor life.
SM CS Series Heat Unit Check-Out Sheet | 21 UNIT CHECK-OUT SHEET Customer Data Customer Name _____________________________________________ Address ______________________________________________________ _______________________________________________________________ Phone _______________________________________________________ Date ___________________________________ Unit Number ___________________________ Unit Nameplate Data Unit Make _________________________________________ Model Number _____________
| Troubleshooting SM CS Series Heat Pump TROUBLESHOOTING Troubleshooting Information Solution column may reflect a possible fault that may be one of, or a combination of causes and solutions. Check each cause and adopt "process of elimination" and or verification of each before making any conclusion.
SM CS Series Heat Troubleshooting | 23 Unit Troubleshooting Problem INSUFFICIENT COOLING OR HEATING Possible Cause Checks and Correction Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding insulation and shading will rectify the problem Loss of conditioned air by leakage Check for leaks in duct work or introduction of ambient air through doors or windows Airflow Lack of adequate air flow or improper distribution of air.
| Troubleshooting SM CS Series Heat Pump Comfort Alert Module -Flash Codes Status LED Status LED Description Status LED Troubleshooting Information Solution YELLOW "ALERT" FLASH CODE 3 Short Cycling Compressor is running only briefly 1. Thermostat demand signal is intermittent 2. Time delay relay or control board defective 3. If high pressure switch present go to Flash Code 2 information 4. If low pressure switch present go to Flash Code 1 information YELLOW "ALERT" FLASH CODE 4 Locked Rotor 1.
SM CS Series Heat Troubleshooting | 25 Comfort Alert Module -Flash Codes Status LED Status LED Description Status LED Troubleshooting Information Solution YELLOW "ALERT" FLASH CODE 8 Welded Contactor Compressor always runs 1. Compressor contactor has failed closed 2. Thermostat demand signal not connected to module YELLOW "ALERT" FLASH CODE 9 Low Voltage Control circuit < 17VAC 1. Control circuit transformer is overloaded 2.
| Operating Temperatures and Pressures SM CS Series Heat Pump OPERATING TEMPERATURES AND PRESSURES Operating Temperatures and Pressures COOLING Model Entering Water Temp.
SM CS Series Heat Operating Temperatures and Pressures | 27 Operating Temperatures and Pressures COOLING HEATING 4.5 30° 40° 50° SM036 Part Load 60° 70° 80° 90° 100° 9.0 40° 50° SM036 Full Load 60° 70° 80° 90° 100° 266-325 5-6 15-18 77-94 272-333 3-4 16-19 4.5 117-143 189-231 14-17 18-22 86-105 279-341 6-7 17-21 9.0 112-137 178-217 8-9 19-24 90-110 286-350 4-5 18-22 4.5 126-154 221-270 14-17 18-21 105-125 293-358 7-8 20-24 9.
| Operating Temperatures and Pressures SM CS Series Heat Pump Operating Temperatures and Pressures COOLING HEATING 6.0 30° 40° 50° SM048 Part Load 60° 70° 80° 90° 100° 12.0 40° 50° SM048 Full Load 60° 70° 80° 90° 100° 248-303 5-6 15-18 67-82 254-311 3-4 16-19 6.0 109-134 183-224 18-22 19-23 75-91 261-319 6-8 17-21 12.0 105-128 172-210 10-12 20-25 79-96 267-327 4-5 18-23 6.0 118-144 214-261 18-22 19-23 78-90 273-334 8-10 20-24 12.
SM CS Series Heat Operating Temperatures and Pressures | 29 Operating Temperatures and Pressures COOLING HEATING 7.0 30° 40° 50° SM060 Part Load 60° 70° 80° 90° 100° 14.0 40° 50° SM060 Full Load 60° 70° 80° 90° 100° 256-313 5-7 19-23 73-89 261-319 4-5 20-25 7.0 113-138 172-210 18-22 19-23 81-99 277-339 7-8 22-26 14.0 110-134 161-196 12-14 20-24 86-105 283-346 5-6 23-28 7.0 116-142 206-252 17-21 19-23 93-114 299-365 8-9 24-29 14.
| Operating Temperatures and Pressures SM CS Series Heat Pump Operating Temperatures and Pressures COOLING HEATING 9.0 30° 40° 50° SM070 Part Load 60° 70° 80° 90° 100° 18.0 40° 50° SM070 Full Load 60° 70° 80° 90° 100° 259-316 5-7 19-23 76-92 264-322 4-5 20-25 9.0 116-141 175-213 18-22 19-23 84-102 280-342 7-8 22-26 18.0 113-137 164-199 12-14 20-24 89-108 286-349 5-6 23-28 9.0 119-145 209-255 17-21 19-23 96-117 302-368 8-9 24-29 18.
SM CS Series Heat Water Side Pressure Drop Table | 31 WATER SIDE PRESSURE DROP TABLE Figure 17: Water side pressure drop in PSIG Series SM024 SM036 SM048 SM060 SM070 Revised 11-13 GPM Water PD @ 77°EWT with Water 3 0.7 4 1.2 5 1.7 6 2.4 7 3.2 8 4.0 6 1.1 8 1.8 10 2.7 12 3.7 14 4.9 16 6.2 6 1.1 8 1.8 10 2.7 12 3.7 14 4.9 16 6.2 7.5 1.1 10 1.9 12.5 2.8 15 3.9 17.5 5.2 20 6.6 7.5 1.1 10 1.9 12.5 2.8 15 3.9 17.5 5.2 20 6.
| Wiring Diagrams SM CS Series Heat Pump WIRING DIAGRAMS 8 733 920 846 (2013/11) Subject to change without prior notice SM CS Series Heat Pump
SM CS Series Heat Dimensional Drawings | 33 DIMENSIONAL DRAWINGS Revised 11-13 8 733 920 846 (2013/11)
| Spare Parts List SM CS Series Heat Pump SPARE PARTS LIST Item #1 is not available as a part kit for ordering. Each section is started with kit names and part numbers, followed by an exploded view illustration identifying all the available components, assemblies and kits.
SM CS Series Heat Spare Parts List | 35 CSParts List - Cabinet Figure # 19 Revised 11-13 8 733 920 846 (2013/11)
| Spare Parts List SM CS Series Heat Pump CSParts List -Refrigeration and Electrical Figure # 20 8 733 920 846 (2013/11) Subject to change without prior notice SM CS Series Heat Pump
SM CS Series Heat Spare Parts List | 37 CS Parts List - Handle Revised 11-13 8 733 920 846 (2013/11)
| Spare Parts List SM CS Series Heat Pump CS Parts List - EBOX 8 733 920 846 (2013/11) Subject to change without prior notice SM CS Series Heat Pump
SM CS Series Heat Notes | 39 NOTES Revised 11-13 8 733 920 846 (2013/11)
| Notes 8 733 920 846 (2013/11) SM CS Series Heat Pump Subject to change without prior notice SM CS Series Heat Pump
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