Addison TRS Series Installation, Operation And Maintenance Manual
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Addison TRS Series Installation, Operation And Maintenance Manual

High efficiency packaged model trs series air conditioning systems
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INSTALLATION OPERATION and MAINTENANCE MANUAL
High Efficiency Packaged Model TRS Series Air Conditioning
--- The TRS Series uses R- 410A Refrigerant -
General Description ..................................3
Unpacking, Inspection ........................3
Design Certification..............................3
Codes & Ordinances ............................3
Installation..............................................3- 7
Unit Location, Clearances ...................3
Curb Installation ...................................4
Rigging...................................................4
Electrical .............................................4-5
Ductwork ...............................................5
Condensate Piping ...............................5
Gas Piping and Venting .......................5
Service Clearances ........................6-7
Cooling System Options ...........................7
Hot Gas Bypass .................................7-8
Head Pressure Control.........................8
Variable Speed Control ........................8
Mechanical Adjustments ....................8- 10
Evaporator Blower Fan ..................8- 10
Electrical System Options .................10-11
Air Flow Switch...................................10
!
WARNING: READ SAFE OPERATION RULES AND MANUAL CAREFULLY
1
Systems, Model Sizes 036 Thru 420

TABLE OF CONTENTS

Clogged Filter Indicator ..........................10
Convenience Outlet .......................10-11
Exhaust Fan Interlock ........................11
Power Through the Curb ...................11
Firestat.................................................11
..........................................11
Unit Controller.....................................11
Sequence of Operation ..........................11
Hydronic and Steam Heat.................11
Electric Heat ........................................11
Gas Heat ..............................................11
Gas Furnace..................................12-20
ECW Wheel....................................21-22
Trouble Shooting Guides...................23-28
Hot Gas Bypass Regulator ................26
General Gas Furnace ....................27-28
Maxitrol-Regulator .........................27-28

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Summary of Contents for Addison TRS Series

  • Page 1: Table Of Contents

    INSTALLATION OPERATION and MAINTENANCE MANUAL High Efficiency Packaged Model TRS Series Air Conditioning Systems, Model Sizes 036 Thru 420 --- The TRS Series uses R- 410A Refrigerant – TABLE OF CONTENTS Safety Labeling and Signal Words...2 Clogged Filter Indicator ......10 General Description ........3...
  • Page 2 ® installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable governmental authorities pertaining to the installation, service, operation and labeling of the equipment. To help facilitate optimum performance and ®...

  • Page 3: Safety Labeling And Signal Words

    SAFETY LABELING AND SIGNAL WORDS Danger, Warning and Caution Danger Label The signal words DANGER, WARNING and White lettering on a black background except the word CAUTION are used to identify levels of hazard DANGER which is white with a red background. seriousness.

  • Page 4: General Description

    GENERAL DESCRIPTION The model TRS Series A packaged cooling and heating unit is designed to cool a conditioned space with mechanical refrigeration, chilled water, energy conservation wheel or a combination of these systems. During the heating mode supply air may be heated by indirect fired gas, electric strip, steam or hot water. The cabinet design provides space for a number of options, including 100% outside air applications and the use of desiccant wheels.

  • Page 5: Curb Installation

    INSTALLATION (CONT’D) Curb Installation, Protrusions Proper installation for the TRS series requires that the roof mounting of the curb be firmly and permanently attached to the roof structure. Check for adequate fastening method prior to setting rooftop unit on curb.

  • Page 6: Ductwork

    Ductwork Properly sized and installed ductwork is critical to reliable performance of the unit and system. The TRS Series is down flow (vertical), horizontal supply and 100% outside air or horizontal supply and return duct connections with the use of a tall horizontal duct curb.

  • Page 7: Gas Piping And Venting

    INSTALLATION (CONT’D) Figure 2 CAUTION: Units with high internal and external static pressure drops will require a deeper trap. Use the graph and table in Figure 2. WARNING GAS PIPING AND VENTING For TRS units with gas furnace options locate the gas furnace instruction manual located inside each unit control vestibule.

  • Page 8: Cooling System Options

    INSTALLATION (CONT’D) Clearances Adequate clearance around the unit must be kept for safety, accessibility, service, and maintenance. 48 inches clearance is required on the side (furnace and electrical) end of the unit. This clearance must be maintained for compressor removal and up to 64 inches in the case of a furnace or ECW wheel unit.

  • Page 9: Head Pressure Control

    COOLING SYSTEM OPTIONS (CONT”D) Head Pressure Control Low ambient control. Cycling the condenser fan or fans in response to compressor discharge pressure will permit stable operation in ambients down to 32F. The operating pressure switch is adjustable to match customer needs; it is factory set to re-energize the fans when discharge pressure drops to 295 psig and energize them when pressure increases to 410 psig.
  • Page 10 MECHANICAL ADJUSTMENTS (CONT’D) FORWARD CURVE Figure 4 Blower Rotation DRIVE BELT TENSION AND ALIGNMENT For ease of service the TRS model unit is equipped with a slide out fan assembly. Two screws must be removed and the wire harness wire tie must be cut to allow the fan to slide forward. WARNING: The fan can slide completely out of the cabinet so us extreme care not to slide fan out to a point where the fan could fall out of the cabinet causing severe personal injury and or equipment and roof damage.

  • Page 11: Electrical System Options

    MECHANICAL ADJUSTMENTS (CONT’D) 11.Turn the outer half of the adjustable pulley counter clockwise the correct number of turns to obtain the desired CFM (L/s). NOTE: To increase the blower speed, turn the outer half of the adjustable pulley clockwise. To decrease the blower speed, turn the outer half of the adjustable pulley counter clockwise.

  • Page 12: Exhaust Fan Interlock

    ELECTRICAL SYSTEM OPTIONS (CONT’D) Convenience Outlet. (Factory Wired) A 115V GFCI receptacle mounted in a 2"x4" enclosure may be furnished with a 15 amp circuit breaker, disconnect and 1500 Watt transformer. The transformer will be field connected to the line side of the unit disconnect switch.

  • Page 13: Gas Furnace

    GAS FURNACE WARNING WARNING WARNING WARNINGS OF POTENTIAL HAZARDS DANGER: Failure to comply will result in severe personal injury or death and/or property damage. 2. WARNING: Failure to comply could result in severe personal injury or death and/or property damage. 3.
  • Page 14 GAS FURNACE (CONT’D) 3. Gas Piping (Individual or Multiple Furnace Applications) All piping must be in accordance with the National Fuel Gas Code ANSI Z223.1a (latest edition), published by the American Gas Association or CAN/CGA-B149.1 and B149.2 (latest edition), published by the Canadian Gas Association. Always refer to local codes where required.
  • Page 15 GAS FURNACE (CONT’D) PROPANE GAS: Contact the gas supplier to size pipes, tanks and 100% lockup gas pressure regulator. Adjust propane regulator provided by the gas supplier for 13 IN. WC maximum pressure. Propane Gas Required Pressures:  Maximum: 13 IN. WC ...
  • Page 16 GAS HEAT (CONT’D) 4a Operation – Lighting instructions WARNING: To ensure safety, follow the instructions provided on the “LIGHTING INSTRUCTIONS” label located inside of the vestibule access door and on this page.
  • Page 17 GAS HEAT (CONT’D) sequence Read Lighting Instructions on page 15. 2. Raise space thermostat to call for heat. 3. Inducer motor energizes. After pressure switch proves proper airflow, control module initiates a 30-second purge. 4. Control module sparks the direct spark igniter and opens main gas valve. a.
  • Page 18 GAS HEAT (CONT’D) 4b Operation wiring diagrams Figure 3A - 2 Stage Control System Connection Wiring Diagram...
  • Page 19 GAS HEAT (CONT’D) HF - Sequence of Operation – Two Stage Operation with Speed Controller...
  • Page 20 GAS HEAT (CONT’D) 4e Operation wiring diagrams – Continued Figure 4A - 25 to 100% Modulation Control System Connection Wiring Diagram...
  • Page 21 GAS HEAT (CONT’D) MD - Sequence of Operation –Electronic Modulation with Inducer Speed Control...

  • Page 22: Ecw Wheel

    ENERGY CONSERVATION WHEEL Before starting up the unit, check the following: 1. Does the rotor rotate freely by hand? If not, recheck the seal to determine whether or not it is binding and if so adjust seals following the instructions below. 2.
  • Page 23 ENERGY CONSERVATION WHEEL (CONT’D) 1. Remove air handler plenum sections so that the front or back of the cassette may be easily accessed and cleared. 2. Support the wheel from the bottom. 3. If the unit is equipped with an external flanged bearing, loosen the Allen screws in the bearing housing that keeps the shaft affixed in the horizontal plane of both bearing, front and back.

  • Page 24: Trouble Shooting Guides

    TROUBLE SHOOTING GUIDES General Refrigeration Circuit SYMPTOM POSSIBLE CAUSE REMEDY 1. Power off, loose electrical connections or fuse open. 1. Check disconnect switch, fuses and wiring. Replace parts or repair as necessary. 2. Compressor contactor not closing. 2. Check voltage to contactor coil, transformer, slave relay, system. Replace parts as necessary. A.Compressor will not start 3.
  • Page 25 TROUBLE SHOOTING GUIDES CONTINUED General Refrigeration Circuit Continued SYMPTOM POSSIBLE CAUSE REMEDY 1.Blower rotational noise. 1. Check blower, motor and drive for faulty adjustment or noisy bearings, loose parts, blower out of balance. 2.Air noise. 2. Check ductwork. Air velocity too high. G.Noisy unit operation.

  • Page 26: Varispeed™ Condenser Control

    TROUBLE SHOOTING GUIDES CONTINUED General Refrigeration Circuit Continued SYMPTOM POSSIBLE CAUSE REMEDY 1. Refrigerant undercharge or leak in system. 1. Check subcooling and check for leaks. 2. Evaporator plugged with dirt or ice. 2. Check evaporator, airflow and filter. 3. Check superheat and adjust TXV, check bulb. 3.

  • Page 27: Hot Gas Bypass Regulator

    2. Worn or eroded seating surface on regulator. 2. Replace defective part. 1. Regulator is oversized. 1. Contact Addison manufacturer for correctly sized regulator. C. Regulator hunting 2. Regulator and liquid injection Thermo Valve 2. Increase superheat setting. Dampen bulb response by repositioning.

  • Page 28: General Gas Furnace

    TROUBLE SHOOTING GUIDES CONTINUED General Gas Furnace See Instruction Manual Included with gas furnace(s) for trouble shooting details. TROUBLE SHOOTING GUIDES CONTINUED Maxitrol-Regulator SYMPTOM POSSIBLE CAUSE FIELD TEST REMEDY 1. Faulty automatic control valve. 1. Remove wire from valve, if valve doesn’t close —valve is faulty. 1.
  • Page 29 If erratic or pulsating voltage continues, contact Addison. *Control circuits external to the Maxitrol-Regulator and Amplifier can cause burner malfunction. Always check gas valve to be certain it is turned on, and check limit controls for normal operation.
  • Page 32 0571I-1500 TRSA/H 0411...

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