SM AH Series Heat Pump AH Model Nomenclature | 3 AH MODEL NOMENCLATURE AV X X L T A FAN MOTOR OPTIONS SERIES A - Constant Airflow ECM SIZE DISCHARGE AIR CONFIGURATION T - Top (AV only) S - Straight (AH only) E - End (AH only) RETURN AIR CONFIGURATION L - Left...
4 | INITIAL INSPECTION SM AH Series Heat Pump MOVING AND STORAGE To avoid equipment damage, DO NOT use If the equipment is not needed for immediate these units as a source of heating or cooling installation upon its arrival at the job site, it should during the construction process.
SM AH Series Heat Pump Installation | 5 Condensing Section operate continuously to prevent possible condenser freeze-up and to optimize overall Locate the condensing section in an area that system performance. Consult the factory in these provides sufficient room to make water and instances for guidance.
6 | Hanging Bracket Kit SM AH Series Heat Pump The secondary drain pan prevents possible condensate overflow or water leakage damage to the ceiling. The secondary drain pan is usually placed on a plywood base isolated from the ceiling joists by additional layers of vibration absorbing mesh.
SM AH Series Heat Pump CONDENSATE DRAIN | 7 Figure # 7 Figure # 8 The condensing unit should be pitched approximately 1/4" towards the drain in both NOTE: Plumbing connected to the heat directions, to facilitate condensate removal. (See pump must not come in direct contact with Figure #6) joists, trusses, walls, etc.
8 | Electrical SM AH Series Heat Pump Electric Heater Package Option If the unit will be installed in a new installation which includes new duct work, the installation Factory installed internal electric heater packages should be designed using current ASHRAE are available for all unit sizes, in certain procedures for duct sizing.
10 | Electrical SM AH Series Heat Pump Condensate PACKAGED Sensor (1) THERMOSTAT HEAT PUMP Alarm Output Splice (From UPM) Auxilliary W/W1/W2 Electric Heat EM/W2 Emergency Heat (4) For the condensate overflow sensor, connect ‘CS’ at the condensing section to ‘CS’ at the air handler. Be sure to ground power supply.
SM AH Series Heat Pump Sequence of operation | 11 The thermostat connections and their functions Just above the connector block is a single red LED are as follows: labeled CFM that will blink intermittently when the unit is running and may flicker when the unit is off. Second Stage Compressor Operation This LED indicates the air delivery of the blower at First Stage Compressor Operation...
12 | Refrigerant Lines SM AH Series Heat Pump Once the thermostat is satisfied, the compressor • Pressure drop (friction losses) in refrigerant shuts down accordingly and the fan ramps down to suction lines reduces system capacity and either fan only mode or off over a span of 30 seconds increases power consumption by as much as (ECM Motors).
Wrench 4. Verify the heat pump is operating in the cooling Type Size size mode. 5. Turn the thermostat system switch to the SM024/036 Suction 5/16 "OFF" position. The unit should stop running SM048/060/070 Suction 5/16 and the reversing valve should deenergize.
Auxiliary Heat Unit Make __________________________________ Model Number: ______________________________ Serial Number _____________________________ Max Fuse Size (Amps) _______________________ Volts / Amps _______________________________ Bosch Group Entering Air Temperature _____________________ 555 NW 65th Court Leaving Air Temperature ______________________ Fort Lauderdale, FL 33309 MAIL TO: Phone: (866) 642-3198 Bosch.Fhp.TechSupport@us.bosch.com...
SM AH Series Heat Pump Troubleshooting | 15 TROUBLESHOOTING Unit Troubleshooting Problem Possible Cause Checks and Correction ENTIRE UNIT Power Supply Off Apply power, close disconnect DOES NOT RUN Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses Voltage Supply If voltage is below minimum voltage specified on unit data plate, contact local power company.
16 | Troubleshooting SM AH Series Heat Pump Unit Troubleshooting Problem Possible Cause Checks and Correction INSUFFICIENT Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding COOLING OR insulation and shading will rectify the problem HEATING Loss of Check for leaks in duct work or introduction of ambient air through conditioned air by doors or windows...