SM Series Heat Pump CONTENTS HR Water Piping ............38 Water Tank Refill ............38 Initial Start-Up ............39 Model Nomenclature............3 Sequence of Operation ............ 40 Standard package..............4 Cooling Mode ............40 General Description............4 Heating Mode ............40 Moving and Storage............5 Application Considerations..........
SM Series Heat Pump MODEL NOMENCLATURE SM 048 VT C F L T - A A SERIES: REVISION LEVEL FAN/MOTOR OPTIONS: T - CONSTANT TORQUE ECM SUPPLY AIR LOCATIONS: T - TOP (VT ONLY) E - END (HZ ONLY) 1 - 208/1/60 & 230/1/60 RETURN AIR LOCATION: VT - VERTICAL R - RIGHT (CF and HZ ONLY)
4 | Standard package SM Series Heat Pump STANDARD PACKAGE SM Series Water-to-Air Heat Pumps are available in Vertical (VT), Horizontal (HZ) and Counter-Flow (CF) configurations. VT units are field convertible for three discharge/supply air orientations and left-hand (LH) or right-hand (RH) return configurations.
Moving and Storage | 5 SM Series Heat Pump Unit connections and components are identified in MOVING AND STORAGE Figure #3 for Horizontal Units. Refer to If the equipment is not needed for immediate Dimensional Drawings for Vertical and Counter installation upon its arrival at the job site, it should Flow unit detail.(Pg#90 through Pg#94) be left in its shipping carton and stored in a clean,...
Additionally, blower orientation: end blow (default) and straight overall unit wiring will need to be through. (Figure #4 and #5) reconfigured for single power connection. Contact Bosch After Sales for guidance. Required Tools • 5/16" hex head driver •...
Horizontal configurability | 7 SM Series Heat Pump 3. Remove and retain bracket by removing (3) 6. Rotate the blower into its new screws. (Figure #8) position.(Figure#11) Figure # 8 Figure # 11 4. Loosed blower assembly by removing (4) 7.
8 | Horizontal configurability SM Series Heat Pump 9. Remove and discard blower collar by removing 12. Reinstall bracket removed in step (#3) using (8) screws. (Figure #14) (3) screws in the same location. (Figure#17) Figure # 14 10. Reorient the blower assembly 180 degree with Figure # 17 blower “belly”...
Horizontal configurability | 9 SM Series Heat Pump 16. Remove and retain plastic Blower opening Instructions - Right-Hand Unit (SM0**- cover by removing (6) screws and reinstall it in 1HZ-*R*-**) the new location (Figure#20 and #21) 1. Remove and retain end and side panels.(Figure#22) Figure # 22 2.
10 | Horizontal configurability SM Series Heat Pump 6. Remove and discard horizontal blower bracket Air coil is in close proximity to the blower. by removing (3) screws. (Figure #27) Air coil fins are easily damaged. Great care must be taken during this step to avoid coil damage.
Horizontal configurability | 11 SM Series Heat Pump 11. Reorient the blower assembly 180 degree with Unit top is notched to allow blower to slide blower “belly” up. (Figure #32) through. Figure # 32 12. Move the blower back into the cabinet. (Figure #33) Figure # 30 10.
(Figure#36 and #37) overall unit wiring will need to be reconfigured for single power connection. Contact Bosch After Sales for guidance. Blower, E-box and panel configuration changes should be done prior to unit being installed in the final location.
Vertical configurability | 13 SM Series Heat Pump Figure # 38 Top Discharge (Default) Figure # 39 Back Discharge Figure # 41  Logo/Front Panel  Electrical Box  Default Configuration Internally mounted electric heat is only available in Top Discharge configuration. See table below for details Blower Orientation and Electric Heat Compatibility...
14 | Vertical configurability SM Series Heat Pump Required steps Possible unit configurations How to use this table: Default • Select desired configuration from “possible unit configurations”. • Instructions with “X” have to be performed to reconfigure the unit. Right return, Right return, Left return, Right...
Vertical configurability | 15 SM Series Heat Pump Figure # 43 2. Remove and retain Condensing Section access Figure # 45 panels (bottom panel) by removing (3) screws. (Figure #44) 1) UP 1) UP Figure # 44 3. Remove and retain Air Handler Panel by lifting up and out as shown in Figure #46.
16 | Vertical configurability SM Series Heat Pump Blower Re-configuration This instruction details re-configuration of blower from UP to SIDE discharge. Re- configuration to other side uses similar steps. 1. Remove and retain diagonal support brackets on Front and Back sides of the unit. (Figure #47) Figure # 49 4.
Heat components, blower collar, and Electric Heat associated wiring will need to be removed. Additionally, overall unit wiring will need to be reconfigured for single power connection. Contact Bosch After Sales Department for guidance. FRONT OF THE PANEL VIEW Figure # 54 8.
18 | Vertical configurability SM Series Heat Pump 9. Remove and retain (2) horizontal blower 11. Remove and retain vertical brackets from support brackets by removing (4) screws in blower by removing (4) screws, (2) on each each. (Figure #56) side of the blower.
Vertical configurability | 19 SM Series Heat Pump 14. Reinstall blower motor and inlet ring assembly Condensate Drain Connection Re- by reversing Step #6. (Figure #61) configuration When re-configuring the unit from Left-Hand Return to Right-Hand Return it is necessary to relocate condensate drain connection from FRONT left corner post to BACK left corner post.(Figure#63)
20 | Vertical configurability SM Series Heat Pump 3. Locate the BACK left condensate drain and 8. Reinstall condensate drain plastic fitting and remove and retain plastic plug covering the bushing in its new location.(Figure#67) cutout. (Figure#65) Figure # 67 Figure # 65 HRP Switch Relocation 4.
Vertical configurability | 21 SM Series Heat Pump 2. Identify a rectangular knockout and remove it. 1. Identify Electric Heat components. (Figure#71) Along with insulation.(Figure#69) Figure # 69 3. Route HRP Pump Disconnect switch wires to Figure # 71 the new switch location.  Electric Heat Electrical Box Do not route wiring over potentially hot  Electric Heat Elements.
22 | Vertical configurability SM Series Heat Pump 4. Remove and retain Electric Heat 7. Re-install Electric Heat E-box in the new Element(s).(Figure#74) location. (Figure#77) Figure # 74 Figure # 77 5. Disconnect main Electric Heat E-box 8. Remove and retain Blower collar cover(s). plug.(FIgure#75) (FIgure#78) Figure # 75...
Vertical configurability | 23 SM Series Heat Pump 10. Route the Unit E-box to Electric Heat wiring Electrical Box re-configuration harness to the new Electric Heat Element E-box is designed to be removable to support field location. configuration of unit: Left-Hand Return (factory 11.
1. Re-route the LCD wiring to the new location and reconnect LCD screen wiring. Reinstall panels. (Figure #85) Panel containing LCD and Bosch Logo must be installed on the same side as Electrical Box. Figure # 85 2. Reinstall belts. (Figure#86)
Pre Installation Unit Preparation | 25 SM Series Heat Pump PRE INSTALLATION UNIT PREPARATION 3. Remove adhesive backing and install each Corner Cap. (Figure#90 and#91) Corner Cap Installation Instructions Ensure cabinet surface is clean and free of Each corner cap is stamped with one the following debris to ensure proper Corner Cap Adhesion.
26 | Return and Discharge Duct Flanges SM Series Heat Pump RETURN AND DISCHARGE DUCT FLANGES Return and discharge opening duct flanges are shipped unfolded. Flanges bend lines are perforated allowing easy bending using standard sheet metal pliers or channel locks. (Figure #92) Bend flanges one at a time.
Mounting Vertical Units | 27 SM Series Heat Pump MOUNTING VERTICAL UNITS The Secondary drain pan prevents possible condensate overflow or water leakage damage to Vertical units should be mounted level on a the ceiling. vibration absorbing pad slightly larger than the The secondary drain pan is usually placed on a base to minimize vibration transmission to the plywood base isolated from the ceiling joists by...
28 | Duct System SM Series Heat Pump DUCT SYSTEM Never use flexible hoses of a smaller inside A supply air outlet collar and return air duct flange diameter than that of the fluid connections are provided on all units to facilitate duct on the unit.
Electrical | 29 SM Series Heat Pump ELECTRICAL Refer to electrical component box layout. (Figure #95) Field wiring must comply with local and national electric codes. Power to the unit must be within the operating voltage range indicated on the unit nameplate or on the performance data sheet.
30 | Electrical SM Series Heat Pump Safety Devices and the UPM Controller 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.
Electrical | 31 SM Series Heat Pump • Evaporator freeze protection sensor, mounted after the thermal expansion device and the UPM Board Factory Default Settings evaporator, monitors refrigerant temperature between the evaporator coil and thermal TEMP 30°F expansion valve. If temperature drops below or LOCKOUT remains at freeze limit trip for 30 seconds, the controller will shut down the compressor and...
32 | Electrical SM Series Heat Pump • MALFUNCTION OUTPUT: active. The LED will flash (three (3) times) the Alarm output is If pulse is code associated with this alarm condition. If Normally Open (NO) dry contact. selected the alarm output will be pulsed. The this alarm occurs 2 times (or 4 if Dip switch is fault output will depend on the dip switch set to 4) within an hour the UPM controller...
Electrical | 33 SM Series Heat Pump ECM INTERFACE BOARD First Stage Compressor Operation Thermostat wiring is connected to the 10 pin screw type terminal block on the lower center Second Stage Compressor Operation portion of the ECM Interface Board. In addition to providing a connecting point for thermostat wiring, the interface board also translates thermostat Reversing Valve (energized in cooling)
34 | Electrical SM Series Heat Pump When the switch is set for Hot gas re-heat -" YES" the unit will energize the H output on P13 when sensing a 24 VAC input on the TB01-H. This will in terms activate the re-heat coil for active de- humidification.
Hot Gas Reheat (HGRH) Option is not available ranges of 5, 10, 15 and 20 - note that not all sizes on SM024 model. are available on all models. Internal mounted Electric Heat is only available on top blow vertical...
36 | Options SM Series Heat Pump When the heat pump compressor operates, the transformers. The adaptive technology of the HRP will monitor the temperature of the discharge device can also extend compressor life by gas from the compressor. Once discharge gas is providing smoother, lower current starts and by hot enough to provide useful heat to the domestic protecting the compressor from transient low...
Options | 37 SM Series Heat Pump By monitoring and analyzing data from the compressor and the thermostat demand, the module can accurately detect the cause of electrical and system related failures without any sensors. A flashing LED indicator communicates the ALERT code and guides the service technician more quickly and accurately to the root cause of a problem.
38 | Heat Recovery Package SM Series Heat Pump HEAT RECOVERY PACKAGE 6. Close all valves and remove the drain hose. 7. Install HR water piping. Water Tank Preparation Concentric water fitting (p/n 520-105) is 1. Turn off electrical or fuel supply to the water recommended.
Heat Recovery Package | 39 SM Series Heat Pump 6. Before restoring the power or fuel supply to the water heater, adjust the temperature setting on the tank thermostat(s) to ensure maximum utilization of the heat available from the refrigeration system and conserve the most energy.
40 | Sequence of Operation SM Series Heat Pump SEQUENCE OF OPERATION Cooling Mode Energizing the “O” terminal energizes the unit reversing valve in the cooling mode. The fan motor starts when the “G” terminal is energized. Note that the fan motor will take 30 seconds to ramp up to operating speed and will run at fan only rated air fl ow as long as there is no call for compressor or heater operation.
Sequence of Operation | 41 SM Series Heat Pump UPM Sequence of Operation (SOO) Flow Chart Y1=1 Power/Switchs/Sensor Status Check 18VAC > Lockout Can Be Set To 4 Via Dip Switch Blink Code On Status LED Soft Lockout HPC = 1 COUNT = 2 Record Alarm Start Counter (If Applicable)
42 | Application considerations SM Series Heat Pump APPLICATION CONSIDERATIONS pressure must always be maintained in the heat exchanger. This can be accomplished with either Well Water Systems control valve or a bladder type expansion tank. Copper is adequate for ground water that is not When using a single water well to supply both high in mineral content.
Application considerations | 43 SM Series Heat Pump open cooling tower may also be used. It is installed in the supply and return lines for unit imperative that all air be eliminated from the isolation and unit water flow balancing. Pressure/ closed loop side of the heat exchanger to insure temperature ports are recommended in both against fouling.
44 | Application considerations SM Series Heat Pump 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. (Figure #107) Figure # 107  Line voltage disconnect (unit)  Flex duct Connection  Low voltage control connection  Line voltage connection (unit)
System Checkout | 45 SM Series Heat Pump SYSTEM CHECKOUT 2. Set the thermostat system switch to “COOL”, and the fan switch to the “AUTO” position. The After completing the installation, and before reversing valve solenoid should energize. The energizing the unit, the following system checks compressor and fan should not run.
46 | Maintenance SM Series Heat Pump 3. Lubrication of the blower motor is not required, however may be performed on some motors to extend motor life. Use SAE-20 non- detergent electric motor oil. 4. The condensate drain should be checked annually by cleaning and flushing to insure proper drainage.
Auxiliary Heat Unit Make __________________________________ Model Number: ______________________________ Serial Number _____________________________ Max Fuse Size (Amps) _______________________ Volts / Amps _______________________________ Bosch Group Entering Air Temperature _____________________ 601 NW 65th Court Leaving Air Temperature ______________________ Fort Lauderdale, FL 33309 MAIL TO: Phone: (954) 776-5471 Bosch.Fhp.TechSupport@us.bosch.com...
48 | troubleshooting SM Series Heat Pump TROUBLESHOOTING SM Series Water Source Heat Pump is equipped UPM Board LED Indications with a externally mounted LCD screen that displays unit errors. (Figure #108) Indication Color Blinks Description GREEN Solid 18-30 VAC Power is present High pressure lockout Low pressure lockout Freeze sensor lockout...
troubleshooting | 49 SM Series Heat Pump Unit Troubleshooting Problem Possible Cause Checks and Correction UNIT OFF ON Discharge In “COOLING” mode: Lack of or inadequate water flow. Entering water HIGH PRESSURE pressure too high temperature is too warm. Scaled or plugged condenser. In “HEATING” CONTROL mode: Lack of or inadequate air flow.
50 | troubleshooting SM Series Heat Pump Compressor Ohms Model Start Winding Run Winding SM024 1.64 SM036 1.52 0.88 SM048 1.86 0.52 SM060 1.63 0.39 SM070 1.85 0.34 Tolerance +/- 7%. All resistance values must be measured with compressor at room temperature.
troubleshooting | 51 SM Series Heat Pump Comfort Alert Module -Flash Codes Status LED Status LED Description Status LED Troubleshooting Information Solution YELLOW "ALERT” Open Start Circuit 1. Run capacitor has failed (may not be bad, verify) FLASH CODE 6 Current only in run 2.
52 | Electronic Thermostat Installation SM Series Heat Pump 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. Mark the position of the subbase mounting holes and drill holes with a 3/16-inch bit.
Table(SM0**-***-***-T*) ECM Const CFM Motor - EON Rated External Static Pressure (in of Water) Models Speed Airflow Adjust Tap 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 SM024 Normal Part Load SM024 Normal Full Load SM036 Normal Part Load...