SM AH Series Heat pump SM024 | SM036 | SM048 | SMO60 | SM070 873392084 (2013/11) Installation, Operation and Maintenance Manual
| SM AH Series Heat Pump CONTENTS SYSTEM CHECKOUT.........................................................13 AH MODEL NOMENCLATURE .............................................. 3 KEY TO SYMBOLS .............................................................. 3 SAFETY WARNINGS ........................................................... 3 INITIAL INSPECTION .......................................................... 4 SM AH STANDARD PACKAGES ...........................................
SM AH Series Heat AH Model Nomenclature | 3 AH MODEL NOMENCLATURE SM 024 - 1 AV X - X L T A FAN MOTOR OPTIONS SERIES SM A - Constant Airflow ECM SIZE DISCHARGE AIR CONFIGURATION 024 036 048 060 070 T - Top (AV only) S - Straight (AH only) E - End (AH only) RETURN AIR CONFIGURATION L - Left R - Right X - None VOLTAGE DESIGNATIONS 1 - 208/1/60 & 230/1/60 CABINET CONFIGURATION Not Used for Air Handlers AH - Air Handler Horizontal AV - Air Handler Vertical Revision Level A Figure # 2 KEY T
| INITIAL INSPECTION SM AH Series Heat Pump To avoid equipment damage, DO NOT use these units as a source of heating or cooling during the construction process. Doing so may affect the unit’s warranty. The mechanical components and filters will quickly become clogged with construction dirt and debris, which may cause system damage. INITIAL INSPECTION Be certain to inspect all cartons or crates on each unit as received at the job site before signing the freight bill.
SM AH Series Heat Installation | 5 Condensing Section Locate the condensing section in an area that provides sufficient room to make water and electrical connections, and allows easy removal of the access panels, for service personnel to perform maintenance or repair. Consult the condensing section of this manual for more information, or your CS factory’s tech support.
| CONDENSATE DRAIN SM AH Series Heat Pump Mounting Horizontal Air Handler Units While horizontal units may be installed on any level surface strong enough to hold their weight, they are typically suspended above a ceiling by threaded rods. The rods are usually attached to the unit corners by hanger bracket kit. (See Figure #5). The rods must be securely anchored to the ceiling. Refer to the hanging bracket assembly and installation instructions for details.
SM AH Series Heat DUCT SYSTEM A supply air outlet collar and return air duct flange are provided on all units to facilitate duct connections. Refer to the FHP individual data specification sheet for physical dimensions of the collar and flange. A flexible connector is recommended for supply and return air duct connections on metal duct systems.
| Electrical SM AH Series Heat Pump Low Voltage Control Wiring The SM series units incorporate the ECM variable speed fan motor and control interface board. The thermostat should be connected to the air handlers and then from the air handler to the condensing section. The low voltage power supply is located in the air handler. In this application utilize a 9 conductor cable from the thermostat to the air handler and 7 conductor cable from the air handler to the condensing section.
SM AH Series Heat Electrical | 9 Units supplied with internal electric heat require two (2) separate power supplies: one for the unit compressor and one for the electric heater elements, blower motor and control circuit. Refer to Figure #7 for wiring instructions, minimum circuit ampacities and maximum fuse/ breaker sizing. Electronic Thermostat Installation Position the thermostat subbase against the wall so that it is level and the thermostat wires protrude through the middle of the subbase.
| Electrical 1. 2. 3. 4. SM AH Series Heat Pump For the condensate overflow sensor, connect ‘CS’ at the condensing section to ‘CS’ at the air handler. Be sure to ground power supply. If service LED is utilized connect ‘ALR’ terminal on the UPM board to ‘L’ on the thermostat sub base. The wiring may be spliced in the air handling unit. The ALR output is always dry contact between the OUT and COM Terminals. See Thermostat connections section of this manual for additional information.
SM AH Series Heat Just above and to the right of the thermostat connection block are four sets of jumper pins labeled ADJ, DELAY, HEAT and COOL. The ADJ set of pins are labeled NORM, (+), (-) and TEST. AP units will all be set on the NORM position from the factory, however, airflow can be increased (+) or decreased (-) by 15% from the pre-programmed setting by relocating the jumper in this section. The TEST position is used to verify proper motor operation.
| Refrigerant Lines • • • SM AH Series Heat Pump Oil is continually being circulated with the refrigerant so, oil return to the compressor is always a consideration in line sizing. Suction lines on split system heat pumps are also hot gas lines in the heating mode, but are treated as suction lines for sizing purposes. If the recommended suction lines sizes are used, there should be no problem with oil return. Vertical lines should be kept to a minimum.
SM AH Series Heat Charging the system | 13 CHARGING THE SYSTEM • Do not overcharge the system. Charge all systems by weight as determined from Figure #15 and the supplied factory charge. Remember the condensing unit is factory charged with sufficient refrigerant to support the air handler, condensing section and 25 feet of liquid line. If the lines are less orm ore than 25 feet, then a charge adjustment must be calculated. Refer to examples #1 and #2 in Figure #15..
| SYSTEM CHECKOUT SM AH Series Heat Pump SYSTEM CHECKOUT INITIAL START-UP After completing the installation, and before energizing the unit, the following system checks should be made: • Verify that the supply voltage to the heat pump is in accordance with the nameplate ratings. • Make sure that all electrical connections are tight and secure. • Check the electrical fusing and wiring for the correct size. • Verify that the low voltage wiring between the thermostat and the unit is correct.
SM AH Series Heat | 15 5. Periodic lockouts almost always are caused by air or water flow problems. The lockout (shutdown) of the unit is a normal protective measure in the design of the equipment. If continual lockouts occur call a mechanic immediately and have them check for: water flow problems, water temperature problems, air flow problems or air temperature problems. Use of the pressure and temperature charts for the unit may be required to properly determine the cause.
| Operating Pressures & Temperatures SM AH Series Heat Pump OPERATING PRESSURES & TEMPERATURES Operating Temperatures and Pressures COOLING Model Entering Water Temp.
SM AH Series Heat Operating Pressures & Temperatures | 17 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 Pressures & Temperatures SM AH 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 AH Series Heat Operating Pressures & Temperatures | 19 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 Pressures & Temperatures SM AH 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 AH Series Heat Unit Checkout Sheet | 21 UNIT CHECKOUT SHEET Customer Data Customer Name _____________________________________________ Address ______________________________________________________ _______________________________________________________________ Phone _______________________________________________________ Date ___________________________________ Unit Number ___________________________ Unit Nameplate Data Unit Make _________________________________________ Model Number _______________
| Troubleshooting SM AH Series Heat Pump TROUBLESHOOTING Unit Troubleshooting Problem ENTIRE UNIT DOES NOT RUN UNIT OFF ON HIGH PRESSURE CONTROL UNIT OFF ON LOW PRESSURE CONTROL UNIT SHORT CYCLES 873392084 (2013/11) Possible Cause Checks and Correction Power Supply Off Apply power, close disconnect Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses Voltage Supply Low If voltage is below minimum voltage specified on unit data plate, contact local power company.
SM AH Series Heat Troubleshooting | 23 Unit Troubleshooting Problem INSUFFICIENT COOLING OR HEATING BLOWER OPERATES BUT COMPRESSOR DOES NOT Revised 11-13 Possible Cause Checks and Correction Unit undersized Recalculate heating and or cooling loads.
| Wiring Diagrams SM AH Series Heat Pump WIRING DIAGRAMS Figure # 16 SM - No Electric Heat Kit 873392084 (2013/11) Subject to change without prior notice SM AH Series Heat Pump
SM AH Series Heat Wiring Diagrams | 25 Figure # 17 SM- With Electric Heat Kit Revised 11-13 873392084 (2013/11)
| Dimensional drawings SM AH Series Heat Pump DIMENSIONAL DRAWINGS 873392084 (2013/11) Subject to change without prior notice SM AH Series Heat Pump
SM AH Series Heat Revised 11-13 Dimensional drawings | 27 873392084 (2013/11)
| Notes SM AH Series Heat Pump NOTES 873392084 (2013/11) Subject to change without prior notice SM AH Series Heat Pump
SM AH Series Heat Revised 11-13 Notes | 29 873392084 (2013/11)
| Notes 873392084 (2013/11) SM AH Series Heat Pump Subject to change without prior notice SM AH Series Heat Pump
SM AH Series Heat Revised 11-13 Notes | 31 873392084 (2013/11)
601 N.W. 65th Court, Ft. Lauderdale, FL 33309 Phone: 866-642-3198 | Fax: 954-776-5529 www.boschtaxcredit.com | www.bosch-climate.
