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  5. Service Manual

Lochinvar ARMOR 150 Service Manual

Other manuals for ARMOR 150: Service Manual
Manual is about: Lochinvar Water Heater User Manual

Summary of ARMOR 150

  • Page 1

    Service manual models: 150 - 500 starting serial #h07h10046464 this manual must only be used by a qualified heating installer / service technician. Read all instructions, including this manual and the armor water heater installation and operation manual, before installing. Perform steps in the order...

  • Page 2

    2 hazard definitions the following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.  danger  warning  caution caution notice danger indicates an imminently hazardous s...

  • Page 3

    Service manual please read before proceeding installer – read all instructions, including this manual and the armor water heater installation and operation manual, before installing. Perform steps in the order given. Have this water heater serviced/inspected by a qualified service technician at leas...

  • Page 4

    4 service manual what is in this manual? Service near water heater piping • typical system components the armor water heater display • display panel readout, buttons and their functions control module inputs • control module inputs and options control module outputs • control module outputs and opti...

  • Page 5

    1 service service manual 5 the armor water heater display.

  • Page 6: Smart System

    1 service 6 service manual gas pressure switch dhw thermostat flow switch tank sensor sequencer / building management system low voltage connection board inlet temperature sensor outlet temperature sensor flue gas sensor high limit sensor flame sensor low water cutoff blocked drain switch display pa...

  • Page 7: Smart System

    Service manual 7 low voltage connection board smart system control board alarm bell aux. Device relay runtime contacts sequencer / building management system dhw pump igniter blower gas valve display panel pc interface control outputs 1 service (continued).

  • Page 8

    1 service 8 service manual general operation how the water heater operates the 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 ...

  • Page 9

    Service manual 9 sequence of operation table 1a sequence of operation operation display 1. Upon a call for heat, the control turns on the water heater pump. Whr: standby out: 123.8f(129) 2. The control connects 120 vac to the blower. The blower does not run at this time. • if the unit is equipped wi...

  • Page 10

    1 service 10 service manual display panel menu access table 1b use this procedure to access menus from the display panel display button operation enter menu code: 0000 hold for 5 seconds -- display will change press 9 times to change last digit in readout to "9" press 2 times to move to the second d...

  • Page 11

    Service manual 11 display panel parameter access table 1c this is a typical example of accessing a parameter, shown for parameter h3, cascade address display button operation >a general b n/a beginning of menu listings. - >c data log d functions press 1 time to toggle menu listing down >e whr settin...

  • Page 12

    1 service 12 service manual parameter table table 1d this table lists smart system control module parameters and where to access them menu sub item description see page user access installer access display modify display modify a 1 boiler model 13 yes no yes no 2 user code 13 yes yes yes yes 3 date ...

  • Page 13

    1 service service manual 13 1 service (continued) viewable and changeable control parameters a: general boiler model the control will display “armor heater” as the model number because the same control is used on several models. This will be displayed when parameter a1 has been accessed. This parame...

  • Page 14

    1 service 14 service manual h: control modes control source the control source parameter selects the method used to control the modulation of the water heater. This parameter is adjustable by the installer by accessing parameter h2. The control methods are as follows: 1 - thermostat. The control mod...

  • Page 15

    Service manual 15 i: circulation pumps dhw pump delay the dhw pump delay parameter sets the length of time the dhw (whr) pump will run after a heater demand has been satisfied. Setting the delay time to 0 will disable the pump. This parameter is adjustable by the installer by accessing parameter i3....

  • Page 16

    2 maintenance 16 service manual maintenance and annual startup table 2a service and maintenance schedules service technician (see the following pages for instructions) general: • address reported problems • inspect interior; clean and vacuum if necessary; • clean condensate trap and fill with fresh ...

  • Page 17

    2 maintenance service manual 17 2 maintenance (continued) follow the service and maintenance procedures given throughout this manual and in component literature shipped with the water heater. Failure to perform the service and maintenance could result in damage to the water heater or system. Failure...

  • Page 18

    2 maintenance 18 service manual flue vent system and air piping 1. Visually inspect the entire flue gas venting system and air piping for blockage, deterioration or leakage. Repair any joints that show signs of leakage. Verify that air inlet pipe is connected and properly sealed. 2. Verify that wate...

  • Page 19

    2 maintenance service manual 19 2 maintenance (continued) inspect ignition and flame sense electrodes 1. Remove the ignition and flame sense electrodes from the water heater heat exchanger access cover. 2. Remove any deposits accumulated on the ignition/flame sense electrode using sandpaper. If the ...

  • Page 20

    20 service manual 2 maintenance check flame signal 1. At high fire the flame signal shown on the display should be at least 10 microamps. 2. A lower flame signal may indicate a fouled or damaged flame sense electrode. If cleaning the flame sense electrode does not improve, ground wiring is in good c...

  • Page 21

    3 troubleshooting service manual 21 label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Always disconnect power to the water heater before servicing. Failure to comply could result in severe personal injury, death, or substantial ...

  • Page 22

    22 service manual 3 troubleshooting table 3a troubleshooting chart - no display fault cause corrective action no display - no 120 vac supplied to unit. • check external line switch, fuse, or breaker. • check position of on/off switch. Turn switch to the on position. • check 120 vac through the on/of...

  • Page 23

    3 troubleshooting service manual 23 3 troubleshooting (continued) table 3b - inlet/outlet system sensor resistance vs. Temperature temperature °f resistance Ω temperature °f resistance Ω 50 18,780 158 1,990 68 12,263 176 1,458 86 8,194 194 1,084 104 5,592 212 817 122 3,893 -- -- 140 2,760 -- -- tabl...

  • Page 24

    3 troubleshooting 24 service manual table 3d troubleshooting chart - noisy system fault cause corrective action noisy operation - supply gas problem. Natural gas pressures should be between 4 inches w.C. And 14 inches w.C. Lp gas pressures should be between 8 inches w.C. And 14 inches w.C. • refer t...

  • Page 25

    Service manual 25 3 troubleshooting (continued) table 3e troubleshooting chart - fault messages displayed on water heater interface fault description corrective action gas pressure sw (will require a manual reset once the condition has been corrected. Press the reset button on the smart system displ...

  • Page 26

    26 service manual 3 troubleshooting table 3e (continued from previous page) troubleshooting chart - fault messages displayed on water heater interface fault description corrective action no flame ign (will require a manual reset once the condition has been corrected. Press the reset button on the sm...

  • Page 27

    Service manual 27 3 troubleshooting (continued) table 3e (continued from previous page) troubleshooting chart - fault messages displayed on water heater interface fault description corrective action no flame running (will require a manual reset once the condition has been corrected. Press the reset ...

  • Page 28

    3 troubleshooting 28 service manual table 3e (continued from previous page) troubleshooting chart - fault messages displayed on water heater interface fault description corrective action manual reset high limit (will require a manual reset once the condition has been corrected. Press the reset butto...

  • Page 29

    Service manual 29 3 troubleshooting (continued) table 3e (continued from previous page) troubleshooting chart - fault messages displayed on water heater interface fault description corrective action fan high or fan speed high (will require a manual reset once the condition has been corrected. Press ...

  • Page 30

    3 troubleshooting 30 service manual table 3e (continued from previous page) troubleshooting chart - fault messages displayed on water heater interface fault description corrective action temp o/shoot (continued) the temperature rise across the heat exchanger has exceeded the set parameters for the w...

  • Page 31

    Service manual 31 3 troubleshooting (continued) table 3e (continued from previous page) troubleshooting chart - fault messages displayed on water heater interface fault description corrective action service blk while the unit is in service mode, the outlet temperature has exceeded 185°f. • establish...

  • Page 32

    3 troubleshooting 32 service manual combustion analysis procedure 1. Turn the main power off to the water heater by placing the “on/off ” switch in the off position. 2. Remove the flue temperature sensor from the flue pipe connection. Note: combustion measurements will be made at this point. 3. Turn...

  • Page 33

    Service manual 33 3 troubleshooting (continued) gas valve adjustment procedure if adjustment of the gas valve is deemed necessary, use the following procedures: (note: the procedures below are model specific.) models 150 - 285 locate the throttle adjustment screw on the side of the venturi valve (fi...

  • Page 34: Notes

    34 notes.

  • Page 35: Notes

    35 notes.

  • Page 36

    Revision notes: revision b (aw-ser-rev b) reflects the addition of the dungs information to the manual. Revision c (eco #c02407) reflects the addition of the air pressure switch, fig. 3-1, removal of pocket pc references and changes made to the circulation pump section (page 15). Revision d (eco #c0...