Table of Contents
Advertisement
OAW-SER Rev C
Outdoor Armor
Service Manual
Models:
151 - 801
This manual must only be used by
WARNING
a qualified heating installer / service
technician. Read all instructions,
including this manual and the Outdoor
Armor Water Heater 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.
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Lochinvar 151 - 801
Summary of Contents for Lochinvar 151 - 801
- Page 1 OAW-SER Rev C Outdoor Armor Service Manual Models: 151 - 801 This manual must only be used by WARNING a qualified heating installer / service technician. Read all instructions, including this manual and the Outdoor Armor Water Heater Installation and Operation Manual, before installing.
-
Page 2: Table Of Contents
Contents 2. MAINTENANCE CONTENTS ................ 2 Maintenance and Annual Startup ........ 19-23 Hazard Definitions .............. 2 3. TROUBLESHOOTING PLEASE READ BEFORE PROCEEDING ......3 Before Troubleshooting ............ 24 Handling Ceramic Fiber Materials ........3 Check Control Module Fuses .......... 24 When servicing water heater ........ -
Page 3: Please Read Before Proceeding
Outdoor Armor Water Heater Service Manual Please read before proceeding Installer – Read all instructions, When calling or writing about the water heater WARNING NOTICE including this manual and the Outdoor – Please have the water heater model and serial Armor Water Heater Installation and number from the water heater rating plate. -
Page 4: What Is In This Manual
Outdoor Armor Water Heater Service Manual What is in this manual? Service Maintenance • Service and maintenance schedules The Outdoor Armor water heater display • Address reported problems • Inspect water heater area and water heater interior • Display panel readout, buttons and their functions •... -
Page 5: Service
Outdoor Armor Water Heater Service Manual Service The Outdoor Armor water heater display The information on the bottom of the display shows the functions of the two SELECT keys (on either corner), and the NAVIGATION dial (in the center): MENU = Left SELECT Key SETPOINTS = NAVIGATION Dial - Pressing Down SHDN = Right SELECT Key... -
Page 6: Control Inputs
Outdoor Armor Water Heater Service Manual Service Control inputs GAS PRESSURE SWITCH DHW THERMOSTAT LOW VOLTAGE FLOW SWITCH CONNECTION BOARD TANK SENSOR SEQUENCER / BUILDING MANAGEMENT SYSTEM LOW WATER CUTOFF O-TEMP HEAT EXCHANGER SWITCH INLET TEMPERATURE SENSOR OUTLET TEMPERATURE SENSOR FLUE GAS SENSOR AIR PRESSURE SWITCH LOUVER PROVING SWITCH... -
Page 7: Control Outputs
Outdoor Armor Water Heater Service Manual Service (continued) Control outputs ALARM BELL LOW VOLTAGE CONNECTION BOARD RUN TIME CONTACTS SEQUENCER / BUILDING MANAGEMENT SYSTEM BUILDING RECIRCULATION PUMP WATER HEATER PUMP IGNITOR BLOWER SMART SYSTEM GAS VALVE CONTROL BOARD DISPLAY PANEL PC INTERFACE... -
Page 8: General Operation
Outdoor Armor Water Heater Service Manual Service General Operation How the water heater operates The Outdoor Armor water heater uses an advanced stainless steel heat exchanger and an electronic control module that allows fully condensing operation. The blower pulls in gas and air and pushes flue products out of the water heater through the heat exchanger and flue piping. -
Page 9: Sequence Of Operation
Outdoor Armor Water Heater Service Manual Service (continued) Table 1A Sequence of operation OPERATION DISPLAY 1. The control will turn on the water heater pump (always ON except in Night Setback). The flow switch and/or LWCO must close. 2. The control turns on power to the louver relay. The louver proving switch, air pressure switch, and blocked drain switch must close. -
Page 10: Display Panel Menu Access
Outdoor Armor Water Heater Service Manual Service Display panel menu access Table 1B Use this procedure to access menus from the display panel SCREEN BUTTON OPERATION DISPLAY STATUS [SHDN] Press the RIGHT SELECT soft key [SHDN]. [YES] Press the LEFT SELECT soft key [YES]. Press and hold the LEFT SELECT soft key [MENU] [MENU] for five (5) seconds. -
Page 11: Display Panel Parameter Access
Outdoor Armor Water Heater Service Manual Service (continued) Display panel parameter access Table 1C This is a typical example of accessing a parameter, shown for parameter DHW Settings, TANK MIN Setpt SCREEN BUTTON OPERATION DISPLAY STATUS This example shows how to access parameter Temperature Settings. The first display shown is at the beginning of the menu listings, after entering the installer access code. -
Page 12: Parameter Table
Outdoor Armor Water Heater Service Manual Service Parameter table Table 1D This table lists SMART SYSTEM control module parameters and where to access them User Access Installer Access Menu Description Page Display Modify Display Modify Time and Date Software Version (read only) Temperature Units (ºC/ºF) DHW Night Setback Offset DHW Night Setback On Times... -
Page 13: Parameter Table
Outdoor Armor Water Heater Service Manual Service (continued) Parameter table Table 1D (continued from previous page) This table lists SMART SYSTEM control module parameters and where to access them User Access Installer Access Menu Description Page Display Modify Display Modify BMS Tstat Input ModBus ModBus T/O... -
Page 14: Viewable And Changeable Control Parameters
Outdoor Armor Water Heater Service Manual Service Viewable and changeable control parameters Before changing parameters, note the Domestic Hot Water (DHW) Night Setback On CAUTION settings so that the unit can be returned to Times its original operating parameters. This is the time in which the Night Setback Offset becomes General active. -
Page 15: Dhw Settings
Outdoor Armor Water Heater Service Manual Service (continued) Tank Minimum Set Point To save any changes and return to the Home Screen, press the RIGHT SELECT [HOME] key. To return to the Status Screen This setting controls the minimum tank set point for the tank without saving the changes, press the LEFT SELECT [EXIT] key. - Page 16 Outdoor Armor Water Heater Service Manual Service Control modes Cascade Address The water heater designated as the Leader needs to be BMS Thermostat Input programmed with address 0. All the Member water heaters When controlling the water heater through the 0 - 10V require addresses from 1 to 7, and the addresses must be BMS input or through ModBus, the water heater can different for each Member.
-
Page 17: Circulation Pumps
Outdoor Armor Water Heater Service Manual Service (continued) Circulation pumps Maximum Cascade Set Point This parameter determines the set point used by the individual DHW Pump Delay water heaters in a Cascade. When a water heater is commanded The DHW pump delay parameter sets the length of time the to fire by the Leader water heater, it will attempt to achieve DHW pump (if connected) will run after a DHW demand has this temperature at its outlet. - Page 18 Outdoor Armor Water Heater Service Manual Service Rate at Maximum Volts This feature has been disabled by the manufacturer. enable this feature change the Service Notification in Months When programmed for BMS control through the 0 - parameter to the desired time range. 10V BMS input or through ModBus and the BMS Type is programmed as POWER, the modulation percentage Service Notification Running Time...
-
Page 19: Maintenance
Outdoor Armor Water Heater Service Manual Maintenance Maintenance and annual startup Table 2A Service and Maintenance Schedules Service technician Owner maintenance (see the following pages for instructions) General: • Address reported problems • Inspect interior; clean and vacuum if Daily •... -
Page 20: Address Reported Problems
Outdoor Armor Water Heater 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 21: Flue Vent System And Air Piping
Outdoor Armor Water Heater Service Manual Maintenance (continued) Flue vent system and air piping Safety relief valves should be re-inspected WARNING AT LEAST ONCE EVERY THREE YEARS, Visually inspect the entire flue gas venting system and air by a licensed plumbing contractor or piping for blockage, deterioration or leakage. -
Page 22: Check Burner Flame
Outdoor Armor Water Heater Service Manual Maintenance Maintenance Inspect ignition and flame sense Check burner flame electrodes 1. Inspect flame through observation window. 1. Remove the ignition and flame sense electrodes from 2. If the flame is unsatisfactory at either high fire or low fire, the water heater heat exchanger access cover. -
Page 23: Cleaning Heat Exchanger
Outdoor Armor Water Heater Service Manual Maintenance (continued) Cleaning heat exchanger Table 2B Heat Exchanger Cleaning Kits recommended materials; including brush, Part Component Model appropriate extension(s), refractory cover, and detailed Number Number Description instructions see Table 2B - Heat Exchanger Cleaning CTN20005 Rear Refractory Cover Kits. -
Page 24: Troubleshooting
Outdoor Armor Water Heater Service Manual Troubleshooting Check control module fuses Label all wires prior to disconnection WARNING when servicing controls. Wiring errors can cause improper and dangerous ALWAYS check control module fuses before NOTICE operation. Always disconnect power replacing control module or any major to the water heater before servicing. -
Page 25: Table 3A - Troubleshooting Chart - No Display
Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Table 3A Troubleshooting Chart - No Display FAULT CAUSE CORRECTIVE ACTION • Check external line switch, fuse, or breaker. • Check position of ON/OFF switch. Turn switch to the ON position. - No 120 VAC supplied to unit. •... -
Page 26: Checking Temperature Sensors
Outdoor Armor Water Heater Service Manual Troubleshooting Checking temperature sensors The water heater temperature sensors (inlet water, outlet water, system water, and flue) are all resistance type devices. The following tables show the correct values for the sensors at various temperatures. Use an ohmmeter to read the resistance of the sensor at a known temperature. -
Page 27: Table 3E - Troubleshooting Chart - Noisy System
Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Table 3E Troubleshooting Chart - Noisy System FAULT CAUSE CORRECTIVE ACTION - Supply gas problem. Natural gas pressures • Refer to Section 4 - Gas Connections of the Outdoor Armor should be between 4 inches w.c. and 14 Water Heater Installation and Operation Manual for inches w.c. -
Page 28: Table 3F - Troubleshooting Chart - Fault Messages
Outdoor Armor Water Heater Service Manual Troubleshooting Table 3F Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • Reset the pressure switches. Gas Pressure SW • Measure the supply gas pressure to determine cause of failure. - Page 29 Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION The main control board has received a call • The control board will release the call for heat after a Anti-cycling for heat too quickly after the previous call for set time period.
-
Page 30: Corrective Action
Outdoor Armor Water Heater Service Manual Troubleshooting Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION The unit was running and lost the flame • Check wiring harness connection at the gas valve and signal. - Page 31 Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION Flame Sequence • Check supply voltage for proper polarity. (will require a manual •...
- Page 32 Outdoor Armor Water Heater Service Manual Troubleshooting Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • Vent/air intake lengths exceed the maximum allowed lengths. Fan Low • Check for obstruction or blockage in the vent/air intake pipes or at terminations.
- Page 33 Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION Sensor Shorted • Check the sensors and their associated wiring. (will require a manual Repair or replace the sensor or wiring if damaged.
- Page 34 Outdoor Armor Water Heater Service Manual Troubleshooting Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION • Verify that the system is full of water and that all air has been properly purged from the system.
- Page 35 Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface FAULT DESCRIPTION CORRECTIVE ACTION 120 VAC input to the main control board has • Check 120 VAC supply to the transformer. dropped below 80 VAC.
-
Page 36: Combustion Analysis Procedure
Outdoor Armor Water Heater Service Manual Troubleshooting Combustion Analysis Procedure Table 3G Flue Products 1. Turn the main power off to the water heater by placing the Natural Gas Propane “On/Off” switch in the OFF position. Turn the main power on to the water heater by placing the “On/Off”... -
Page 37: Gas Valve Adjustment Procedure
Outdoor Armor Water Heater Service Manual Troubleshooting (continued) Gas valve adjustment procedure Model 400 If adjustment of the gas valve is deemed necessary, use the following procedures: (Note: The procedures in this section Locate the throttle adjustment screw on the top of the gas are model specific.) valve, see FIG. - Page 38 Outdoor Armor Water Heater Service Manual Troubleshooting Model 501 Models 601 - 801 Locate the throttle adjustment screw on top of the gas valve, Locate the throttle adjustment screw on top of the gas valve, see FIG. 3-5. Using an Allen wrench, turn the screw a 1/4 see FIG.
- Page 39 Notes...
-
Page 40: Revision Notes
Revision Notes: Revision A (ECO #C10942) initial release. Revision B (ECO #C14411) reflects condensate trap changes (R6594). on page 20. Revision C (ECO #C15251) reflects the addition of the burner door temperature switch (R6322) on pages 6 and 28. ARM-SER-01 CP-2M-01/06 OAW-SER Rev C 06/14...