Lochinvar Veritus 60 Service Manual
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Lochinvar Veritus 60 Service Manual

Lochinvar Veritus 60 Service Manual

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If the information in this manual
⚠
WARNING
is not followed exactly, electrical
shock or excessive pressure may result causing
property damage, personal injury, or loss of life.
-- Installation and service must be performed by a
qualified installer or service agency.
LOW LEAD CONTENT
*Models 200 through 350 are composed of combinations
of models 60 and 140 which are the certified units.
Service Manual
Models: 60 - 350*
Series: 100
This manual must only be used by
⚠
WARNING
a qualified heating installer / service
technician. Read all instructions,
including this manual and the
Veritus Water Heater Service
Manual, before installing. Perform
steps in the order given. Failure
to comply could result in severe
personal injury, death, or substantial
property damage.
Save this manual for future reference.
100375661_2000735927_Rev A

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  • Page 1 100375661_2000735927_Rev A Service Manual Models: 60 - 350* Series: 100 If the information in this manual ⚠ WARNING is not followed exactly, electrical shock or excessive pressure may result causing property damage, personal injury, or loss of life. -- Installation and service must be performed by a qualified installer or service agency.

  • Page 2: Table Of Contents

    Contents 2. MAINTENANCE CONTENTS ................ 2 HAZARD DEFINITIONS ........... 2 Maintenance and Annual Startup .........20-25 PLEASE READ BEFORE PROCEEDING ...... 3 3. TROUBLESHOOTING Handling Ceramic Fiber Materials ........3 Before Troubleshooting ............. 26 When servicing water heater ........... 3 Check Following Items ............26 Water heater operation ............

  • Page 3: Please Read Before Proceeding

    Service Manual Please read before proceeding Installer - Read all instructions, including ⚠WARNING this manual and the Veritus Water Heater Installation and Operation Manual, before installing. Perform steps in the order given. User - This manual is for use only by qualified heating installer/service...

  • Page 4: What Is In This Manual

    Service Manual What is in this manual? Service Maintenance • Service and maintenance schedules The Veritus water heater display • Address reported problems • Display panel readout, buttons • Inspect water heater area • Inspect water heater interior Control module inputs •...

  • Page 5: The Veritus Water Heater Display - Home Screen

    Service Manual Service Veritus Water Heater Display - Home Screen VIEW INFORMATION SETUP SETTINGS HOME...

  • Page 6: Control Inputs

    Service Manual Service Control Inputs NFC KEY TANK SENSOR (1 REQUIRED, 5 OPTIONAL) SEQUENCER/ BUILDING MANAGEMENT SYSTEM AUXILIARY TEMPERATURE SENSORS LOW VOLTAGE SYSTEM SUPPLY CONNECTION TEMPERATURE SENSOR BOARD SYSTEM RETURN TEMPERATURE SENSOR RECIRCULATION 2000659574 00 RETURN SENSOR OUTDOOR SENSOR LOUVER PROVING SWITCH DISPLAY PANEL ENABLE SWITCH HIGH PRESSURE...

  • Page 7: Control Outputs

    Service Manual Service (continued) Control Outputs ALARM BELL LOW VOLTAGE LOUVER RELAY CONNECTION BOARD RUN TIME CONTACTS 2000659574 00 SEQUENCER / BUILDING MANAGEMENT SYSTEM COMPRESSOR WATER HEAT PUMP EEV 1 EEV 2 2000659574 00 WATER BALL VALVE CONTROL BOARD REFRIGERANT 4 WAY VALVE FAULT LIGHT HEAT TAPE...

  • Page 8: General Operation

    Service Manual Service General Operation Sequence of operation How the water heater operates Table 1-1 shows control module normal sequences of operation for water heating operation. The Veritus water heater uses a scroll compressor to compress low pressure vapor refrigerant to a high pressure vapor state. Access modes The high pressure vapor is passed through a brazed plate heat exchanger along with cold water that passes through the heat...

  • Page 9: Parameters Table

    Service Manual Service Parameter table Table 1-2 This table lists SMART TOUCH control module parameters and where to access them User Access Installer Access Menu Description Display Modify Display Modify Temperature Units (ºC/ºF) Time and DAte Connect to Wi-fi Screen Settings Software Version (Update) Reboot Terminal Tank Set Point...
  • Page 10 Service Manual Service (continued) Parameter table Table 1-2 (continued) This table lists SMART TOUCH control module parameters and where to access them User Access Installer Access Menu Description Display Modify Display Modify BMS Setpoint Mode BMS Enable Mode Volts at Min Volts at Max Min Setpoint Max Setpoint...

  • Page 11: Initial Setup - Settings Screen

    Service Manual Service Initial Setup Screen Figure 1-1 Settings Screen Initial Setup Use the following procedure to set the clock: ⚙ Press the SETTINGS button ( ) in the top center of the Temperature units (°C / °F) screen (see FIG. 1-1). The control can be configured to display temperature in either Press the SET MANUAL TIME button across from the °C or °F.

  • Page 12: Viewable And Changeable Control Parameters

    Service Manual Service (continued) Viewable and changeable control parameters Set Point Screens Figure 1-2 Setup Screen Before changing parameters, note the settings so that the unit can be returned to its original operating CAUTION parameters. Set Point Screens Figure 1-3 Tank Setpoints HW Screen...
  • Page 13 Service Manual Service Tank Setpoint Tank Differential At least one tank sensor must be installed and will be used to The tank temperature must drop this amount below the tank trigger heat pump operation. With the tank sensor installed, the setpoint and clear standby heat loss criteria before the water SMART TOUCH control automatically detects the presence of heater turns back on.
  • Page 14 Service Manual Service (continued) Figure 1-4 Backup Heat Screen Backup Heat Min Voltage Backup Heat 1 & 2 The Volts at Minimum parameter should be set to the Backup Heat ON/OFF minimum voltage signal sent to the SMART TOUCH control. There are different settings for running backup heat under The range of this parameter is 0 to 10V.
  • Page 15 Service Manual Service Figure 1-5 Boost Settings Screen Boost Settings Boost Temp Increments To help the tank recharge faster, the system control board The unit setpoint can be boosted in Boost Temp Increments (SCB) can boost the units’ setpoint if a system supply sensor is or small steps until the tank setpoint has been met.
  • Page 16 Service Manual Service (continued) Figure 1-6 BAS Settings Screen Control Modes ModBus TCP Port The number for the ModBus TCP Port is required if ModBus is turned on. The value entered will be the connection number A building automation system (BAS) allows an operator to the heat pump system.
  • Page 17 Service Manual Service Figure 1-7 BMS Settings Screen Minimum Setpoint BMS Setpoint Mode When BMS is enabled, this setting determines the setpoint when the 0-10V BMS input is equal to or less than the Volts BMS can be set to Enabled or Disabled communication. When at Minimum parameter value.
  • Page 18 Service Manual Service (continued) Figure 1-8 Unoccupied Settings Screen UNOCCUPIED Night Setback Domestic Hot Water (DHW) Night Setback On and Off Times: Vacation Mode This is the time in which the Night Setback Offset becomes Vacation mode can either be turned On or Off. When in active.
  • Page 19 Service Manual Service Figure 1-9 Service Maintenance Screen Service Notification Data Logging Service Notification in Months Reset Log Hours When the water heater control determines that a scheduled The reset log errors function clears the last 10 errors log. service is due based on months of installation, the water heater display will alternate the standard water heater display text on the home screen with the message SERVICE DUE every 5 seconds.

  • Page 20: Maintenance

    Service Manual Maintenance General Operation Table 2-1 Service and Maintenance Schedules Service Technician Owner Maintenance (See the following pages for instructions) General: • Check water heater area • Address reported problems • Inspect water heater area • Inspect interior, clean and vacuum if necessary.
  • Page 21 Service Manual Maintenance Follow the service and maintenance procedures given throughout this manual and in component literature ⚠ WARNING shipped with the water heater. Failure to perform the service and maintenance could result in damage to the water heater or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.
  • Page 22 Service Manual Maintenance (continued) Check Relief Valve Read Section 4 - System Piping before proceeding further. If you do not understand these instructions or have any questions Inspect the relief valve and lift the lever to verify flow. regarding the temperature-pressure relief valve, call the toll- Before operating any relief valve, ensure that it is piped free number 1-800-722-2101 for technical assistance.
  • Page 23 Service Manual Maintenance If necessary, apply an anti-microbial agent on the insulation Read all the warnings on the bottle of ⚠ WARNING per the instructions provided on the product label. Discard the cleaning products used for evaporator collected microbial contaminants as required by local or cleaning.
  • Page 24 Service Manual Maintenance (continued) This HPWH unit is factory charged with 513A refrigerant. See the rating label on the HPWH unit and Table 2-4 for Figure 2-1 Braze plate refrigerant charge by weight. It should not be necessary to add or remove refrigerant during installation or start up. Refrigerant lost during frequent refrigerant pressure testing can cause low refrigerant conditions.
  • Page 25 Service Manual Maintenance Table 2-5 Saturated Temperature Chart R513A SATURATED TEMPERATURE CHART Saturated Temperature °F Saturated Temperature °C Saturated Pressure PSI 11.9 15.0 18.3 21.9 25.9 30.1 34.6 39.6 44.8 50.5 56.5 63.0 69.9 77.3 85.1 93.4 102.0 112.0 121.0 132.0 143.0 155.0...

  • Page 26: Troubleshooting

    Service Manual Troubleshooting ELECTRICAL SHOCK HAZARD – For ⚠ WARNING Figure 3-1 High Voltage Panel your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.
  • Page 27 Service Manual Troubleshooting Table 3-1 Troubleshooting Chart Problem Possible Causes Corrections • Sheet Metal fasteners are loose. • Tighten Fasteners Heat Pump is too noisy • Operating vibration is transferring to • Place vibration dampers underneath floor or building structure. unit •...
  • Page 28 Service Manual Troubleshooting (continued) Table 3-1 Troubleshooting Chart (continued) Problem Possible Causes Corrections • Increase Tank Setpoint • Tank Setpoint is too low • Increase size of storage tank or install • Heat pump/storage tank undersized gas or electric heater to make up for for application shortfall •...
  • Page 29 Service Manual Troubleshooting Table 3-1 Troubleshooting Chart (continued) Problem Possible Causes Corrections • Disconnect Wires and Tighten Pressure Transducer onto Schrader Valve. • Verify the wire connections to the HPC are intact and the discharge pressure transducer connects to a four pin molex connector.
  • Page 30 Service Manual Troubleshooting (continued) Table 3-1 Troubleshooting Chart (continued) Problem Possible Causes Corrections • Check external line switch, fuse, or breaker • No 120 VAC supplied to display • Check Line and Neutral connections panel inside display panel No Display •...

  • Page 31: Look Up Table For Fan Speed

    Service Manual Troubleshooting Troubleshooting Modes Table 3-2 Fan Speed Look-up Table Service Mode Model 60K Model 140K To aid in troubleshooting, the water heater may be placed into Temperature Fan speed Temperature Fan speed service mode to simulate a call for heating and command the Ambient (°F) (rpm) Ambient (°F)
  • Page 32 Service Manual Troubleshooting (continued) Figure 3-3 Reversing Valve - Normal Operation Figure 3-4 Reversing Valve - Defrost COMPRESSOR COMPRESSOR EVAPORATOR CONDENSER EVAPORATOR CONDENSER ACCUMULATOR ACCUMULATOR Table 3-3 Outlet Water - Sensor A (100170543) Table 3-4 Outlet Water - Sensor B (100170543) Temperature Resistance Temperature...
  • Page 33 Service Manual Troubleshooting Table 3-5 Intlet Water - Sensor (100170559) Table 3-6 Ambient Sensor (100170604) Temperature Resistance Temperature Resistance °F °C Ω °F °C Ω 30902 32650 19553 19900 12690 12490 10291 10000 8406 8057 5715 5327 3958 3603 2786 2488 1752 2004...

  • Page 34: Yellow

    Service Manual Troubleshooting (continued) Table 3-8 Tank, System Supply, Return, Recirc, Table 3-9 Sensor Wire and Corresponding Color Sensors (100170544) Sensor Wire Color Temperature Resistance Water Outlet Blue °F °C Ω Water Inlet Green 30902 Ambient Black & Red twisted pair 19553 Refrigerant Discharge 12690...

  • Page 35: Checking Temperature Sensors

    Service Manual Troubleshooting (continued) Table 3-10 High Pressure Transducer - Voltage and Table 3-11 Low Pressure Transducer - Voltage and Pressure Pressure High Pressure Transducer Low Pressure Transducer Voltage Output Pressure Voltage Output Pressure (VDC) (PSI) (VDC) (PSI) 10.0 Table 3-12 Pressure Transducer Corresponding Color High Transducer Pressure...

  • Page 36: Core Sense

    Service Manual Troubleshooting Compressor CoreSense Module Figure 3-7 Coresense Diagnostics Module The Copeland compressor is installed with a CoreSense module that is used to switch the compressor on and off, protect the compressor from fault conditions, and alert the user. The CoreSense is installed inside the junction box of the AHP140 compressor and external to the AHP060 compressor.
  • Page 37 Service Manual Troubleshooting (continued) Table 3-14 Rocker DIP Switch default settings Reset to Lockout Switch EXV Injection Digital Control Failsafe Stop Bits Default Enable ▀ ▀ ▀ ▀ ▀ ▀ Table 3-15 Communication DIP Switch default settings ▀ Switch 1. Node Address 2.
  • Page 38 Service Manual Troubleshooting Table 3-16 Error Code Chart Code Heat Pump Fault Recoverability Description Corrective Action All tank sensors All Tank Sensors that are used are • See Sensor Troubleshooting Auto Reset Lockout Faulty (System) disconnected or section and tables shorted Heat Pump Control Control board power...
  • Page 39 Service Manual Troubleshooting (continued) Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action Refrigerant discharge Discharge • See Sensor Troubleshooting Warning temperature sensor Temperature Sensor section and tables disconnected Refrigerant discharge Discharge • See Sensor Troubleshooting Warning temperature sensor Temperature Sensor...
  • Page 40 Service Manual Troubleshooting Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action • Check for blockages in refrigerant piping including Refrigerant suction closed compressor service valve pressure falls • Check for charge leak; check for Refrigerant Low below 5 psig during Auto Reset Lockout...
  • Page 41 Service Manual Troubleshooting (continued) Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action Vertical evaporator suction header • See Sensor Troubleshooting Evap2 Temp Sensor Warning temperature sensor section and tables disconnected Vertical evaporator suction header •...
  • Page 42 Service Manual Troubleshooting Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action • Check condensate tube from unit to the floor drain for proper installation The condensate • Inspect the drain pan and drain pan switch has Blocked Drain Warning condensate tube for blockages...
  • Page 43 Service Manual Troubleshooting (continued) Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action • -Check all legs of power for compressor • Verify compressor crankcase heater is on and has had Compressor Excess Auto Reset Lockout Four consecutive adequate time to prevent excess Trips...
  • Page 44 Service Manual Troubleshooting Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action Voltage supplied to • Check incoming 480VAC power Fan Over Voltage Auto Reset Lockout fan exceeds 523 VAC to the unit Voltage supplied to •...
  • Page 45 Service Manual Troubleshooting (continued) Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action • Check the harness connections Discharge Pressure from the pressure sensors to J6 Discharge Pressure Transducer is on the Heat Pump Control Warning Sensor disconnected or...
  • Page 46 Service Manual Troubleshooting (continued) Table 3-16 Error Code Chart (continued) Code Heat Pump Fault Recoverability Description Corrective Action • Check pump power connections Low Water Flow Water flow did not Auto Reset Lockout • Check for blockages in water Timeout reach minimum flow lines such as closed valves NFC Key...
  • Page 47 Service Manual NOTES...

  • Page 48: Revision Notes

    Revision Notes: Revision A (PCP #3000058109/ CN #500044379) initial release. 100375661_2000735927_Rev A 12/23...

This manual is also suitable for:

Veritus60kVeritus 140kVeritus 350

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