Nibe ClimateMaster Tranquility Rooftop ST Series Installation, Operation & Maintenance Manual
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Nibe ClimateMaster Tranquility Rooftop ST Series Installation, Operation & Maintenance Manual

Commercial 60hz - r-454b
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COMMERCIAL
TranquiliTy® (ST) rOOFTOP SEriES
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
Part#: 97B0162N01 | Created: May 14, 2024
Models: ST 036-240
60Hz – R-454B
PRELIMINARY

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Summary of Contents for Nibe ClimateMaster Tranquility Rooftop ST Series

  • Page 1 COMMERCIAL TranquiliTy® (ST) rOOFTOP SEriES INSTALLATION, OPERATION & MAINTENANCE MANUAL Part#: 97B0162N01 | Created: May 14, 2024 Models: ST 036-240 60Hz – R-454B PRELIMINARY...

  • Page 2: Table Of Contents

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Table of Contents 036-240 Model Nomenclature Electrical: Low Voltage Wiring Attentions, Warnings & Cautions Electrical: Thermostat Wiring General Information Controls: CXM2 and DXM2.5 Minimum Installation Area Operating Limits and Commissioning Conditions Refrigerant System Servicing Sound Data Physical Data Startup Procedure...

  • Page 3: Model Nomenclature

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Model Nomenclature 036-240 PRODUCT SPECIAL OPTIONS NAME S = Standard S = Tranquility BLOWER MOTOR MODEL M = Plug EC TYPE T = Rooftop Series EXTENDED OPTIONS 0 = None AIR DAMPER F = Smoke Detector OPTIONS 0 = None DRAIN PAN/HEAT EXCHANGER OPTIONS...

  • Page 4: Attentions, Warnings & Cautions

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Attentions, Warnings & Cautions 036-240 SAFETY WARNING Do not pierce or burn. Warnings, cautions, and notices appear throughout this manual. Read these items carefully WARNING before attempting any installation, service, or All refrigerant discharged from this unit must be recovered WITHOUT troubleshooting of the equipment.
  • Page 5 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Attentions, Warnings & Cautions 036-240 CAUTION DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life.

  • Page 6: General Information

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: General Information 036-240 INSPECTION PRE-INSTALLATION Upon receipt of the equipment, carefully check Installation, operation and maintenance instructions the shipment against the bill of lading. Make sure are provided with each unit. Before unit startup, all units have been received.
  • Page 7 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: General Information 036-240 CHECKS TO THE AREA Ventilated area Prior to beginning work on systems containing FLAMMABLE REFRIGERANTS, safety checks are Ensure that the area is in the open or that it is necessary to ensure that the risk of ignition adequately ventilated before breaking into the is minimized.
  • Page 8 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: General Information 036-240 REQUIRED AREA FOR INSTALLATION Checks to Electrical Devices Repair and maintenance to electrical The minimum room area of the space (A ) or a components shall include initial safety checks minimum room area of conditioned space (TA ) shall and component inspection procedures.

  • Page 9: Minimum Installation Area

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Minimum Installation Area 036-240 Minimum area and CFM requirements for the conditioned space Model (ST) Charge [oz] 63.00 90.00 99.75 81.00 90.00 97.50 144.00 255.00 = Minimum conditioned area 3.23 4.61 5.11 4.15 4.61 5.00 7.38 11.53...

  • Page 10: Refrigerant System Servicing

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Refrigerant System Servicing 036-240 REFRIGERANT SYSTEM To maintain sealed circuit integrity, do not install The outlet for the vacuum pump shall not service gauges unless unit operation appears be close to any potential ignition sources, abnormal.
  • Page 11 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Refrigerant System Servicing 036-240 Leak detection equipment shall be set at a percentage of the lower flammability limit of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25% maximum) is confirmed.

  • Page 12: Physical Data

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Physical Data 036-240 Tranquility (ST) Series IP Units ST Series Compressor Scroll Number of Circuits (Compressors) Factory Charge R-454B - (oz.) per circuit Refrigerant Leak Detection System Number of Sensors Blower Motor Blower Motor Quantity Standard Motor (hp) Blower Backward Curved Plug...
  • Page 13 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Physical Data 036-240 Tranquility (ST) Series SI Units ST Series Compressor Scroll Number of Circuits (Compressors) Factory Charge R-454B - (kg) per circuit 1.81 2.02 2.90 3.21 2.61 2.90 3.15 5.17 7.24 Refrigerant Leak Detection System Number of Sensors Blower Motor Blower Motor Quantity...

  • Page 14: Dimensional Data

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Dimensional Data Models: 036-072 036-240 Model Outdoor Air Opening Water In/Out (IPT) Condensate ST036 12.57” x 30.00” 3/4” 1” ST048 12.57” x 30.00” 3/4” 1” Actual area is 7.25” w x 8.875”h ST060 12.57” x 30.00” 1”...
  • Page 15 TranquiliTy® (ST) rOOFTOP SEriES– iOM Dimensional Data Models: 096-144 036-240 Model Outdoor Air Opening Water In/Out (IPT) Condensate ST096 18.95” x 36.00” 1-1/2” 1” ST120 18.95” x 36.00” 1-1/2” 1” Actual area is 7.25” w x 8.875”h ST144 18.95” x 36.00” 1-1/2”...
  • Page 16 TranquiliTy® (ST) rOOFTOP SEriES– iOM Dimensional Data Models: 168-240 036-240 Model Outdoor Air Opening Water In/Out (IPT) Condensate ST168 18.95” x 74.00” 2” 1” ST240 18.95” x 74.20” 2” 1” Actual area is 7.25” w x 8.875”h Guides indicate .125” bleed all around 113.5 *Rain Hood...

  • Page 17: Roof Curbs

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Standard Roof Curbs 036-240 Models 036 048 060 072 72.25” 18.00” 35.25” 72.25” 35.25” 14.00” or 24.00” 096 120 144 82.25” 21.00” 41.25” 82.25” 41.25” 14.00” or 24.00” 168 240 82.25” 21.00” 78.88” 82.25” 78.88”...
  • Page 18 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Standard Curb with Vibration Isolation 036-240 Models 036 048 060 072 72.25” 18.00” 35.25” 72.25” 35.25” 14.00” or 24.00” 096 120 144 82.25” 21.00” 41.25” 82.25” 41.25” 14.00” or 24.00” 168 240 82.25” 21.00” 78.88”...
  • Page 19 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Side Discharge Supply & Return Roof Curb 036-240 Models 036 048 060 072 72.25” 18.00” 35.25” 096 120 144 82.25” 21.00” 41.25” 168 240 82.25” 21.00” 78.88” w w w. c l i m a t e m a s t e r. c o m C r e a t e d : M a y 1 4 , 2 0 2 4 PA G E : 1 9...
  • Page 20 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Side Discharge Supply & Roof Isolation Curb 036-240 Models 036 048 060 072 72.25” 18.00” 35.25” 096 120 144 82.25” 21.00” 41.25” 168 240 82.25” 21.00” 78.88” PA G E : 2 0 C r e a t e d : M a y 1 4 , 2 0 2 4 w w w.

  • Page 21: Installation

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Installation 036-240 LOCATION, ACCESS AND The installation of rooftop water-source heat pump units and all associated components, parts CURB INSTALLATION and accessories that make up the installation Install curbs with adequate clearance to allow shall be in accordance with the regulations of ALL unit maintenance and servicing.

  • Page 22: Piping Installation

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Piping Installation 036-240 INSTALLATION SUPPLY AND RETURN PIPING CONDENSATE PIPING Install a condensate trap at each unit with the top of Follow these piping guidelines. the trap positioned below the unit condensate drain Install a drain valve at the base of each supply connection.

  • Page 23: Water Quality Requirements

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Water Quality Requirements 036-240 Table 2: Water Quality Requirements Clean water is essential to the performance and life span of water source heat pumps. Contaminants, chemicals, and minerals all have the potential to cause damage to the water heat exchanger if not treated properly.
  • Page 24 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Water Quality Requirements 036-240 α The ClimateMaster Water Quality Table provides Hydrogen Sulfide has an odor of rotten eggs. water quality requirements for coaxial and If one detects this smell, a test for H S must be brazed plate heat exchangers.
  • Page 25 TranquiliTy® (ST) rOOFTOP SEriES– iOM Actual area is 7.25” w x 8.875”h Models: Water Quality Requirements Guides indicate .125” bleed all around 036-240 Measuring Earth Ground Resistance for Ground-Water Applications � 0.02 Building Well Casing Ground Rod Ohm meter Measure the earth ground bond using an Ohm meter between the building’s ground rod and the steel well casing.
  • Page 26 TranquiliTy® (ST) rOOFTOP SEriES– iOM Actual area is 7.25” w x 8.875”h Models: Water Quality Requirements Guides indicate .125” bleed all around 036-240 Measuring Electrolysis, Voltage, and Current for Ground-Water Applications 300mV Heat Pump Volt Meter Wire Electrode inserted into port for Voltage Measurement Pete’s Port Water in...

  • Page 27: Electrical Data: Plug Ec

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Electrical Data: Plug EC 036-240 Total Min. Fuse/ Compressor Blower Motor Voltage Voltage Model Voltage Unit Circuit HACR Code Min/max QTY RLA 208/230-3-60 187/252 82.0 14.7 17.1 27.0 ST036 460-3-60 432/504 44.3 14.1 208/230-3-60 187/252 11.9 112.0 16.7...
  • Page 28 TranquiliTy® (ST) rOOFTOP SEriES– iOM Electrical Data: Plug EC Models: with Internal Secondary Pump 036-240 High Head Variable Pump Min. Fuse/ Compressor Blower Motor Pump Voltage Voltage Rated Model Voltage Circuit HACR Code Min/max Current QTY RLA ST036 208/230-3-60 187/252 82.0 1.44 16.1...

  • Page 29: Electrical: Power Wiring

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Electrical: Power Wiring 036-240 Table 3: Recommended Thermostat Wire Size WARNING WIRE SIZE MAX. WIRE LENGTH* Disconnect electrical power source to prevent injury or death from 22 - Gauge 30 feet [9.14m] electrical shock. 20 - Gauge 50 feet [15.24m] CAUTION...

  • Page 30: Electrical: Dxm2.5 Example Wiring Diagram

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Electrical: DXM2.5 Example Wiring Diagram 036-240 PA G E : 3 0 C r e a t e d : M a y 1 4 , 2 0 2 4 w w w. c l i m a t e m a s t e r. c o m...

  • Page 31: Electrical: Low Voltage Wiring

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Electrical: Low Voltage Wiring 036-240 THERMOSTAT CONNECTIONS The thermostat should be wired directly to the water temperature, which is a better indication of DXM2.5 or CXM2 board. See Electrical: Thermostat how water flow rate/temperature is affecting the Wiring for specific terminal connections.
  • Page 32 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Electrical: Low Voltage Wiring 036-240 ACCESSORY CONNECTIONS A terminal paralleling the compressor contactor coil Only relay- or triac-based electronic thermostats has been provided on the CXM2/DXM2.5 control. should be used with slow closing valves. When Terminal “A”...
  • Page 33 TranquiliTy® (ST) rOOFTOP SEriES– iOM Electrical: Low Voltage Wiring Models: For Units Using External Motorized Water Valve 036-240 Figure 6: Accessory Motorized Water Valve Figure 8: Two-Stage Piping Typical Wiring Example #1 Solenoid Flow Valve Regulator Unit Controller Stage 2 To Discharge Stage 1 Accessory Motorized...
  • Page 34 TranquiliTy® (ST) rOOFTOP SEriES– iOM Electrical: Low Voltage Wiring Models: Refrigeration Detection System 036-240 REFRIGERANT DETECTION SYSTEM (RDS) FIELD-INSTALLED RDS SYSTEM The function, operation, and required servicing Field-installed RDS sensors should be placed per the measures for the Refrigerant Detection System (RDS) preferred locations featured in Figure 10.

  • Page 35: Electrical: Thermostat Wiring

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Electrical: Thermostat Wiring 036-240 THERMOSTAT INSTALLATION The thermostat should be located on an interior Position the thermostat back plate against the wall wall in a larger room, away from supply duct so that it appears level and so the thermostat wires drafts.

  • Page 36: Controls: Cxm2 And Dxm2.5

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Controls: CXM2 and DXM2.5 036-240 CXM2 Controls For detailed controller information, see the CXM2 Application, Operation, and Maintenance (AOM) manual (part # 97B0137N01). To confirm the controller type of your particular unit, refer to digit 9 on the unit model number and the unit nomenclature diagram found on page 3 of this manual.

  • Page 37: Operating Limits And Commissioning Conditions

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Operating Limits and Commissioning Conditions 036-240 OPERATING LIMITS COMMISSIONING CONDITIONS Environment – Units are designed for roof mount or Starting conditions vary depending upon model and indoor installation. are based upon the following notes: Power Supply –...

  • Page 38: Sound Data

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Sound Data 036-240 Free Air Inlet Combined With Casing (Cabinet) Ducted Discharge Octave Band Frequency, Hz Radiated Octave Band Frequency, Hz Model Mode 1000 2000 4000 8000 1000 2000 4000 8000 Fan Only Cooling: Full Load ST036 Heating: Full Load Cooling: Part Load...

  • Page 39: Startup Procedure

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Startup Procedure 036-240 When the cleaning process is complete, remove WARNING the short-circuited hoses. Reconnect the hoses to To prevent injury or death due to electrical shock or contact with the proper supply and return the connections to moving parts, open unit disconnect before servicing unit.

  • Page 40: Blower Motor Controls

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Blower Motor Controls 036-240 BLOWER DESCRIPTION BLOWER SEQUENCE OF OPERATION Electrically Commutated Motors The blower comes factory programmed with the are electronically-switched, standard DXM2.5 (for 036-072) or CXM2 (for 096-240) brushless, DC, external-rotor controls. The DXM2.5 or CXM2 controls the blower motors with permanent controller using a 0–10VDC control signal, and comes magnets.
  • Page 41 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Blower Motor Controls 036-240 LAT CONTROL BLOWER OPERATION The DXM2.5 or CXM2 will come factory configured The blower-control voltage is increased or decreased for LAT control operation. The blower speed will be incrementally based on the magnitude of the controlled by the control board to maintain the differential between the current LAT and the target LAT factory default LAT set point, 55°...

  • Page 42: Unit And System Checkout

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Unit and System Checkout 036-240 UNIT CHECKOUT SYSTEM CHECKOUT Voltage: Ensure that voltage is within the System Water Temperature: Ensure that it is within † † utilization range specifications of the unit an acceptable range to facilitate start-up. (When compressor and fan motor.

  • Page 43: Unit Startup

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Unit Startup 036-240 a. If the unit has a MCO thermostat, set the WARNING temperature indicator to the highest setting Polyolester Oil, commonly known as POE oil, is a synthetic oil used in many and set the selector switch to HEAT.

  • Page 44: Operating Temperatures And Pressures

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Operating Temperatures and Pressures 036-240 Subcooling/Superheating Cooling Heating Entering Water Flow Suction Discharge Water Air Temp Suction Discharge Water Air Temp Water Super- Sub- Super- Sub- GPM/ton Pressure Pressure Temp Drop F Pressure Pressure Temp Rise F Temp ºF...

  • Page 45: Startup Log Sheet

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Startup Log Sheet Startup Log Sheet 036-240 Models: Rooftop – Water Cooled Units TrE, TrT 7300 S.W. 44th Street, Oklahoma City, OK 73179 • Phone: 405.745-6000 Installer: Complete Unit and System Checkout and follow Unit Startup Procedures in the IOM. Use this form to record unit information, temperatures, and pressures during startup.
  • Page 46 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Preventative Maintenance 036-240 MAINTENANCE PROCEDURES FAN MOTORS Perform the maintenance procedures outlined below Conduct Amperage checks annually. Amp draw periodically as indicated. should not exceed normal full load or rated load amps by more than 10 percent of the values noted on the WARNING unit nameplate.

  • Page 47: Warranty (U.s. & Canada)

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Warranty (U.S. & Canada) 036-240 w w w. c l i m a t e m a s t e r. c o m C r e a t e d : M a y 1 4 , 2 0 2 4 PA G E : 4 7...

  • Page 48: Warranty (International)

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Warranty (International) 036-240 PA G E : 4 8 C r e a t e d : M a y 1 4 , 2 0 2 4 w w w. c l i m a t e m a s t e r. c o m...
  • Page 49 TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Notes 036-240 w w w. c l i m a t e m a s t e r. c o m C r e a t e d : M a y 1 4 , 2 0 2 4 PA G E : 4 9...

  • Page 50: Revision History

    TranquiliTy® (ST) rOOFTOP SEriES– iOM Models: Revision History 036-240 Date Section Description 05/14/2024 Created 7300 SW 44th St. | Oklahoma City, OK 73179 *97B0162N01* Phone: 1-800-299-9747 www.climatemaster.com ClimateMaster works continually to improve its products. As a result, the design and specifications of each product at the time of order may be changed without notice and may not be as described herein.

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