Lochinvar EnergyRite ER252 Service Manual
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Also See for EnergyRite ER252:
- Installation & operation manual (52 pages) ,
- Service manual (32 pages) ,
- User's information manual (12 pages)
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ERP-SER_100161004_2000003725_Rev F
Service Manual
Models: ER152, ER202,
ER252, ER302, and ER402
⚠WARNING
This manual must only be used by
a qualified heating installer / service
technician.
Read
all
instructions,
including this manual and the EnergyRite
Installation and Operation 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.
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Table of Contents
Troubleshooting
Related Manuals for Lochinvar EnergyRite ER252
Summary of Contents for Lochinvar EnergyRite ER252
- Page 1 ERP-SER_100161004_2000003725_Rev F Service Manual Models: ER152, ER202, ER252, ER302, and ER402 ⚠WARNING This manual must only be used by a qualified heating installer / service technician. Read instructions, including this manual and the EnergyRite Installation and Operation Manual, before installing. Perform steps in the order given.
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Page 2: Table Of Contents
Service Manual Contents Contents........................ 2 Hazard definitions....................2 Please read before proceeding................3 What is in this manual?..................5 1. Service......................6 General Operation..................9 Access Setup Menu..................10 Access Service Menu................. 11 2. Maintenance....................13 Burner removal and cleaning..............15 Heat exchanger cleaning................ -
Page 3: Please Read Before Proceeding
Service Manual Please read before proceeding Installer – Read all instructions, When calling or writing about the pool ⚠WARNING NOTICE including this manual heater – Please have the pool heater model EnergyRite Installation and Operation and serial number from the pool heater Manual, before installing. - Page 4 Service Manual Please read before proceeding When servicing pool heater – • To avoid electric shock, disconnect electrical supply before performing maintenance. • To avoid severe burns, allow the pool heater to cool before performing maintenance. Pool heater operation – •...
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Page 5: What Is In This Manual
Service Manual What is in this manual? Service Maintenance The EnergyRite display • Service and maintenance schedules • Inspect pool heater area and pool heater interior • Display panel readout, buttons and their functions • Check all piping for leaks Control module inputs •... -
Page 6: Service
Service Manual Service The EnergyRite display POOL/SPA/OFF RESET/MENU POOL/SPA/OFF RESET/MENU (Press to Exit Menu/Settings) (Hold for Menu/Settings) SWIPE BUTTONS ALONG ARROWS TO UNLOCK *WAIT 5 SECONDS BETWEEN UNLOCK ATTEMPTS DISPLAY SCREEN DOWN NOTE: The control must be unlocked before adjustments can be made. When locked, the display will alternate between its current mode and “Keypad Locked”... - Page 7 Service Manual Service (continued) Control inputs POOL/SPA/OFF RESET/MENU (Press to Exit Menu/Settings) (Hold for Menu/Settings)
- Page 8 Service Manual Service Control outputs POOL/SPA/OFF RESET/MENU (Press to Exit Menu/Settings) (Hold for Menu/Settings) POOL/SPA/OFF RESET/MENU (Press to Exit Menu/Settings) (Hold for Menu/Settings)
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Page 9: General Operation
Service Manual Service (continued) General Operation How the pool heater operates The EnergyRite uses a copper finned tube heat exchanger and an electronic control module. The blower provides both primary and secondary air to the burners and forces the flue products out of the combustion chamber and into the vent system. -
Page 10: Access Setup Menu
Service Manual Service Access setup menu NOTE: The control must be unlocked before adjustments can be made. Reference page 6 of this manual for instructions on how to unlock the control keypad. Table 1A Use this procedure to access the Setup Menu from the display panel The pool heater will continue to operate while the Setup Menu Switch - Select this option when the heater is used in is being accessed. -
Page 11: Access Service Menu
Service Manual Service (continued) Access service menu NOTE: The control must be unlocked before adjustments can be made. Reference page 6 of this manual for instructions on how to unlock the control keypad. Table 1B Use this procedure to access the Service Menu from the display panel Service menu descriptions Outlet temperature This is the outlet temperature as measured by the outlet water... - Page 12 Service Manual Service Keypad lockout Unlocking the keypad Locking the keypad Press any button and hold for 5 seconds. The Display Screen The user has the ability to lock the keypad to prevent will show ENTER PASSCODE. The digit on the far left will be unauthorized adjustments.
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Page 13: Maintenance
Service Manual Maintenance Maintenance and annual startup Table 2A Service and Maintenance Schedules Owner maintenance Service technician (see the EnergyRite User’s Information Manual for (see the following pages for instructions) instructions) General: • Address reported problems Daily • Inspect interior; clean and vacuum if •... - Page 14 Service Manual Maintenance Follow the service and maintenance procedures given throughout this manual and in component literature ⚠WARNING shipped with the pool heater. Failure to perform the service and maintenance could result in damage to the pool 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.
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Page 15: Burner Removal And Cleaning
Service Manual Maintenance (continued) Inspect ignition and flame sense electrodes 1. Remove the ignition and flame sense electrodes from the combustion chamber door. 2. Remove any deposits accumulated on the ignition/ flame sense electrode using sandpaper. If the electrodes cannot be cleaned satisfactorily, replace with new ones. 3. - Page 16 Service Manual Maintenance Burner removal and cleaning procedure: The combustion chamber lining in this ⚠WARNING appliance contains ceramic fiber materials. a) Turn off main power to the pool heater. Ceramic fibers transform into cristobalite (crystalline silica) when exposed b) Turn off main manual gas shutoff to the pool heater. to temperatures above 2192°F (1200°C) dependent upon the length of exposure c) Remove the front and top outer jacket panels.
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Page 17: Heat Exchanger Cleaning
Service Manual Maintenance (continued) Heat exchanger cleaning Combustion Air Fan: The combustion air fan should be checked every 6 months or each season of operation. Clean fan as required when installed in a dust or dirt contaminated location. Water Circulating Pump: Ensure that the filter system pump is providing adequate flow to the pool heater. -
Page 18: Combustion Air Shutter Adjustment
Service Manual Maintenance Combustion Air Shutter Adjustment TABLE - 2B This pool heater uses a fan assisted combustion process. The AIR SHUTTER fan air shutter is factory preset and should not need adjusting ADJUSTMENT OPENING in most cases. If adjustment is required, the fan air shutter may be manually adjusted to a dimension specified for each model “A”... - Page 19 Service Manual Maintenance (continued) Gas train and controls Differential air pressure measurement The differential air pressure measurement can be checked with a slack tube manometer (FIG. 2-8). Disconnect the two tubes from the air pressure switch and connect one to each side of a manometer.
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Page 20: Facts About Water Chemistry
Service Manual Maintenance Facts about water chemistry We recommend a periodic analysis be performed to maintain and ensure proper operation of your pool heater (see Table 2D). Factors which affect pool and spa water and, more importantly, the efficiency of your new pool/spa heater are: TABLE 2D RECOMMENDED POOL CHEMISTRY LEVELS Proper Filtration... -
Page 21: Heat Exchanger Inspection
Service Manual Maintenance (continued) Heat exchanger inspection Caution - An equipment room operating under a negative pressure may experience a downdraft in the flue Tubes of a pool heater which is not firing. The cold outside air pulled down the flue may freeze a heat exchanger. This This pool heater is especially designed to operate without condition must be corrected to provide adequate freeze accumulation of scale in the heat exchanger, even in very... -
Page 22: Troubleshooting
Service Manual Troubleshooting Check the following: Label all wires prior to disconnection when ⚠WARNING servicing controls. Wiring errors can cause 1. Wire connectors to control module are securely plugged in improper and dangerous operation. Always at the module and originating control. disconnect power to the pool heater before servicing. -
Page 23: Checking Temperature Sensors
Service Manual Troubleshooting (continued) Checking temperature sensors The pool heater temperature sensors (inlet and outlet water) are both resistance type devices. The following table shows the correct values for the sensors at various temperatures. Use an ohmmeter to read the resistance of the sensor at a known temperature. -
Page 24: Troubleshooting Chart - Noisy System
Service Manual Troubleshooting Table 3C Troubleshooting Chart - Noisy System FAULT CAUSE CORRECTIVE ACTION - Supply gas problem. Natural gas pressures • Refer to Section 6 - Gas Connections of the EnergyRite should be between 4.0 inches w.c. and Installation Operation Manual detailed... -
Page 25: Troubleshooting Chart - Fault Messages
Service Manual Troubleshooting (continued) Table 3D Troubleshooting Chart - Fault Messages Displayed on Pool Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION AUX Device 1 The field supplied safety wired into AUX • Check pool heater pump operation on a call for heat. Device 1 has opened. - Page 26 Service Manual Troubleshooting Table 3D (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Pool Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION outlet water temperature • Verify that the system is full of water and that all air exceeded the fixed setting of the has been properly purged from the system.
- Page 27 Service Manual Troubleshooting (continued) Table 3D (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Pool Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION The pool heater has a call for heat, but • Verify that the system is full of water and that all air there is insufficient water flow.
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Page 28: Gas Manifold Pressure Adjustment Procedure
Service Manual Troubleshooting Gas manifold pressure adjustment Turn the power switch to the “ON” position. procedure Set the thermostat to call for heat. The fan will start. The gas valve is referenced to the fan NOTICE While the combustion air fan is running for the prepurge pressurized chamber by a hose connected cycle and the pressure in the front chamber stabilizes, from the vent of the gas valve regulator... - Page 29 Service Manual Troubleshooting (continued) 19. Replace the cover screw on the regulator and turn the 16. The gas valve will open at the end of the trial for power switch to the “ON” position. Set the thermostat to ignition stage and remain open as the burners fire. call for heat.
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Page 30: Checking Gas Supply Pressure
Service Manual Troubleshooting Checking gas supply pressure Turn the main power switch to the “OFF” position. Shut off gas supply at the field installed manual gas cock in the gas piping to the appliance. If fuel supply is LP gas, shut off gas supply at the tank. On ER152 - ER202 models remove the 1/8"... - Page 31 Service Manual Troubleshooting (continued) 13. Remove the manometer and related fittings from the “inlet” side of the gas valve, replace the 1/8" hex plug in the tee (Models ER252 - ER402) or gas valve (Models ER152 - ER202) and tighten. 14.
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Page 32: Revision Notes
Revision Notes: Revision B (ERP-SER-Rev B) reflects changes made to the Combustion Air Shutter Adjustment section. Revision C (ECO C02134) reflects the revision of Figure 3-2 on Page 28. Revision D (PCP# 3000004413 / CN# 500004678) reflects an update to the T Stat paragraph on page 10. SAP material numbers have been updated.