TA Series Table of Contents Table oF CoNTeNTs Model Nomenclature ............3 Heating Mode ..............13 Initial Inspection ............4 Well Water Systems ............13 General Description ............4 Installation Of Pressure Regulating Valves ....13 Moving And Storage ............4 Cooling Tower/Boiler Systems ........14 Safety Considerations ............4 Earth Coupled Systems ..........14...
Initial Inspection Ta series INITIal INsPeCTIoN less than 6 tons, no more than three high. “Do not stack units larger than 6 tons.” Be certain to inspect all cartons or crates on each unit as received at the job site before signing the freight saFeTY CoNsIderaTIoNs bill.
Mounting Horizontal units Ta series slightly larger than the base to minimize vibration transmission to the building structure. It is not necessary to anchor the unit to the floor. (See Figure #1). MouNTING HorIZoNTal uNITs Figure #3 pan is usually placed on a plywood base isolated from the ceiling joists by additional layers of vibration absorbing mesh.
Should your well driller express connections. Refer to the Bosch individual data concern regarding the quality of the well water specification sheet for physical dimensions of the available or should any known hazards exist in your collar and flange.
Ta series eCM Interface board Properly sized fuses or HACR circuit breakers must be installed for branch circuit protection. See unit nameplate for maximum fuse or breaker size. The unit is provided with a concentric knock-out in the front left corner post for attaching common trade sizes of conduit, route power supply wiring through this opening.
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1200 CFM. Refer to Figure #7 for factory thermostat inputs on to the rest of the control programmed air delivery settings for the TA Series. circuit. Remember to always turn off unit power at the circuit breaker before attaching or disconnecting...
Controller Ta series saFeTY deVICes aNd THe uPM CoNTroller Each unit is factory provided with a Unit Protection Module (UPM) that controls the compressor opera- tion and monitors the safety controls that protect the unit.
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Controller Ta series • MalFuNCTIoN ouTPuT—Alarm output is Normally - One blink—High pressure lockout Open (NO) dry contact. If 24 VAC output is needed - Two blinks—Low pressure lockout R must be wired to the ALR-COM terminal; 24VAC - Three blinks—Freeze sensor lockout...
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Ta series 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...
Once the thermostat is satisfied, the compressor compressor power supply failure. Each TA Series shuts down accordingly and the fan ramps down to model has a number of heater sizes available. Refer to...
With the the same manner as cooling, but with the reversing Bosch heat pumps these valves are not required. However, valve de-energized. On a call for auxiliary heat (W1), if installed, a pair of valves are required for proper...
Coupled systems TA Series valve for heating (indirect acting). A refrigerant tap is No unit should be connected to the supply or return provided in the refrigerant line located between the piping until the water system has been completely...
Heat recovery Package TA Series reversing valve solenoid should energize. The refrigerant discharge gas from the compressor. This compressor and fan should not run. waste heat of the cooling mode captured by the heat recovery increases the capacity and efficiency of the 3.
Initial start-uP TA Series TroublesHooTING Problem Possible Cause Checks and Corrections No Flow No Power Check power supply On/Off Switch Position Set switch to “ON” position Low Flow Compressor Contactor Engage heat pump contactor Broken or loose wires Repair or tighten wires...
Maintenance TA Series MaINTeNaNCe 3. Lubrication of the blower motor is not required, however may be performed on some 1. Filter changes or cleanings are required at regular motors to extend motor life. Use SAE-20 intervals. The time period between filter changes non-detergent electric motor oil.
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TA Series Well Water application Figure 10: Well Water application 6 720 220 046 Subject to change without prior notice Revised 05-12...
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Cooling Tower/Boiler Application TA Series Figure 11: Cooling Tower/Boiler Application 6 720 220 046 Revised 05-12...
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Coupled application TA Series Figure 12: earth Coupled application 6 720 220 046 Subject to change without prior notice Revised 05-12...
Typical Wiring diagram TA Series TYPICal WIrING dIaGraM Single Phase | Two Stage | ECM Blower Motor | Electric Heat | 2—6 Ton 6 720 220 046 Subject to change without prior notice Revised 05-12...
Troubleshooting TA Series TroublesHooTING Problem Possible Cause Checks and Corrections 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 Low If voltage is below minimum voltage specified on unit data plate, contact local power company.
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Troubleshooting TA Series Insufficient Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding insulation and shading will rectify the problem cooling or heating Loss of conditioned Check for leaks in duct work or introduction of ambient air through...
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Notes TA Series 6 720 220 046 Subject to change without prior notice Revised 05-12...
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Notes TA Series 6 720 220 046 Revised 05-12...