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Garmin Automobile Installation And Service Manual

Summary of Automobile

  • Page 1

    Tm installation & service manual models: snr150-100, snr200-100, sna285-125, sna400-125, and sna500-125 this manual must only be used by a qualified heating installer / service technician. Read all instructions in this manual before installing. Perform steps in the order given. Failure to comply cou...

  • Page 2

    2 contents please read before proceeding . . . . . . . . . . . 3 hazard definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 the shield -- how it works . . . . . . . . . . . . . . . . . 4-6 ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1. Determine ...

  • Page 3

    Please read before proceeding installer – read all instructions, in this manual before installing. Perform steps in the order given. Have this water heater serviced/inspected by a qualified service technician, at least annually. Failure to comply with the above could result in severe personal injury...

  • Page 4

    4 the shield - how it works... 1. Access cover - front provides access to the gas train and heat exchanger. 2. Air intake adapter allows for the connection of the pvc air intake pipe to the water heater. 3. Air pressure switch the air pressure switch detects blocked inlet conditions. 4. Air shroud (...

  • Page 5

    1 9 25 front view - models snr150-100 -- sna285-125 29 17 5 16 19 18 9 13 2 23 21 10 20 28 11 14 33 left side (inside unit) -- models snr150-100 - sna285-125 29 17 5 16 33 26 9 25 13 8 2 23 14 30 27 3 22 right side (inside unit) -- models snr150-100 - sna285-125 the shield - how it works... (continu...

  • Page 6

    6 the shield - how it works... 2 13 35 32 36 34 7 31 rear view - model sna400-125 2 15 35 32 36 34 7 28 25 24 rear view - model sna500-125 right side (inside unit) - model sna500-125 right side (inside unit) - model sna400-125 model sna400-125 model sna500-125 9 26 35 22 8 23 15 16 33 17 29 5 30 9 2...

  • Page 7

    Ratings notes: 1. Shield water heaters require special gas venting. Use only the vent materials and methods specified in the shield installation and service manual. 2. Standard shield water heaters are equipped to operate from sea level to 4,500 feet only with no adjustments. The water heater will d...

  • Page 8

    8 the shield water heater gas manifold and controls met safe lighting and other performance under tests specified in ansi z21.10.3 – latest edition. Failure to keep water heater area clear and free of combustible materials, gasoline, and other flammable liquids and vapors can result in severe person...

  • Page 9

    Open front 1" minimum clearance around hot water pipes and vent pipe figure 1-2 alcove installation - minimum required clearances 1" minimum clearance around hot water pipes and vent pipe closed door ventilating air opening ventilating air opening * area of each opening: 1 sq. Inch per 1000 btu per ...

  • Page 10

    10 do not install the water heater on carpeting even if foundation is used. Fire can result, causing severe personal injury, death, or substantial property damage. When local codes require compliance with nsf 5, the heater must be sealed to the floor with a food grade silicone to prevent debris and ...

  • Page 11

    When removing a water heater from existing common vent system: do not install the shield water heater into a common vent with any other appliance. This will cause flue gas spillage or appliance malfunction, resulting in possible severe personal injury, death, or substantial property damage. Failure ...

  • Page 12

    1 determine water heater location 12 figure 1-3_combustion air direct from outside 1. If air is taken directly from outside the building with no duct, provide two permanent openings to the equipment room (see fig. 1-3): (a) combustion air opening, with a minimum free area of one square inch per 4000...

  • Page 13

    1 determine water heater location (continued) 13 table - 1b minimum recommended combustion air supply to equipment room model number fig. 1-3 fig. 1-4 fig. 1-5 fig. 1-6 *outside air from 2 openings directly from outdoors *outside air from 2 ducts delivered from outdoors **inside air from 2 ducts del...

  • Page 14

    14 figure 2-1 vertical direct venting (two-pipe vertical termination) - see page 25 for more details figure 2-2 sidewall direct venting (two-pipe sidewall termination) - see page 18 for more details figure 2-3 concentric vertical termination - see page 27 for more details figure 2-4 concentric sidew...

  • Page 15

    15 vent piping materials use only the materials listed in table 2a below for vent pipe, and fittings. Failure to comply could result in severe personal injury, death, or substantial property damage. Installation must comply with local requirements and with the national fuel gas code, ansi z223.1 for...

  • Page 16

    16 air intake/vent connections 1. Combustion air intake connector (fig.’s 2-5 and 2-6) - used to provide combustion air directly to the unit from outdoors. A fitting is provided on the unit for final connection. Combustion air piping must be supported per guidelines listed in the national mechanical...

  • Page 17

    17 2 general venting (continued) vent, air piping and termination: the shield water heater vent and air piping can be installed through the roof or through a sidewall. Follow the procedures in this manual for the method chosen. Refer to the information in this manual to determine acceptable vent and...

  • Page 18

    18 3 sidewall direct venting vent/air termination – sidewall follow instructions below when determining vent location to avoid possibility of severe personal injury, death, or substantial property damage. A gas vent extending through an exterior wall shall not terminate adjacent to a wall or below b...

  • Page 19

    19 vent/air termination – sidewall 3 sidewall direct venting (continued) vent / air termination 12" min. 12" min. 12" min. Figure 3-2 clearance to gravity air inlets forced air inlet vent / air termination 7' min. Above any public walkway if less than 10’ 36" min. Figure 3-3a clearance to forced air...

  • Page 20

    20 3 sidewall direct venting vent piping galvanized thimble vent cap air piping wall plate vent plate figure 3-4a sidewall termination assembly prepare wall penetrations 1. Use the factory supplied wall plate as a template to locate the vent and air intake holes and mounting holes. Air pipe penetrat...

  • Page 21

    21 3 sidewall direct venting (continued) vent/air termination – sidewall all vent pipes and air inlets must terminate at the same height to avoid possibility of severe personal injury, death, or substantial property damage. Multiple vent/air terminations 1. When terminating multiple shield water hea...

  • Page 22

    22 3 sidewall direct venting figure 3-7 kit contents_cvk3003 - snr150-100 -- snr200-100 sidewall termination installation 1. Determine the best location for the termination kit (see fig. 3-6). 2. The total length of piping for vent or air must not exceed the limits given in the general venting secti...

  • Page 23

    23 sidewall termination – optional concentric vent figure 3-9 concentric vent dimensional drawing - models snr150-100 -- snr200-100 / cvk3003 instead of cementing the smaller pipe to the rain cap, a field-supplied stainless steel screw may be used to secure the two (2) components together when field...

  • Page 24

    24 3 sidewall direct venting sidewall termination – optional concentric vent multiventing sidewall terminations when two (2) or more direct vent appliances are vented near each other, each appliance must be individually vented (see fig. 3-13). Never common vent or breach vent this appliance. When tw...

  • Page 25

    25 4 vertical direct venting vent/air termination – vertical follow instructions below when determining vent location to avoid possibility of severe personal injury, death or substantial property damage. Installation must comply with local requirements and with the national fuel gas code, ansi z223....

  • Page 26

    26 4 vertical direct venting vent/air termination – vertical prepare roof penetrations 1. Air pipe penetration: a. Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter. 2. Vent pipe penetration: a. Cut a hole for the vent pipe. For either combustib...

  • Page 27

    27 4 vertical direct venting (continued) vertical termination – optional concentric vent description and usage lochinvar offers an optional concentric combustion air and vent pipe termination kit. Both combustion air and vent pipes must attach to the termination kit. The termination kit must termina...

  • Page 28

    28 4 vertical direct venting vertical termination – optional concentric vent figure 4-6 concentric vent roof installation ensure termination height is above the roof surface or anticipated snow level (12 inches in u.S.A. Or 18 inches in canada) as shown in fig. 4-4, page 27. If assembly is too short...

  • Page 29

    29 the shield water heater may be installed with a single pipe carrying the flue products to the outside while using combustion air from the equipment room. The vent pipe may terminate either vertically (fig. 5-1) above the roof line in a conventional vent manner or on a sidewall (fig. 5-2). Follow ...

  • Page 30

    30 6 system piping system water piping methods observe a minimum of one inch clearance around all un-insulated hot water pipes when openings around the pipes are not protected by non-combustible materials. 2. If this water heater is installed in a closed water supply system, such as the one having a...

  • Page 31

    31 6 system piping (continued) see the *piping illustrations included in this section, fig.’s 6-2 thru 6-4 for suggested guidelines in piping the shield water heater. *please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment an...

  • Page 32

    32 6 system piping cold water supply flow check valve (typical) building return mixing valve ball valve (typical) union (typical) hot water supply expansion tank system circulator figure 6-2 single unit installation & service manual tm.

  • Page 33

    33 6 system piping (continued) mixing valve ball valve (typical) hot water supply union (typical) system circulator building return expansion tank flow check valve (typical) cold water supply figure 6-3 multiple units installation & service manual tm.

  • Page 34

    34 6 system piping flow check valve (typical) ball valve (typical) expansion tank thermometer (typical) cold water supply 140° hot water supply high temperature building return union (typical) low temperature building return 180° hot water supply mixing valve figure 6-4 two temperature - single unit...

  • Page 35

    35 7 gas connections connecting gas supply piping 1. Install ground joint union for servicing, when required. 2. On models snr150-100 -- sna285-125 install a manual shutoff valve in the gas supply piping outside water heater jacket when required by local codes or utility requirements. 3. In canada –...

  • Page 36

    36 failure to apply pipe sealing compound as detailed in this manual can result in severe personal injury, death, or substantial property damage. Shield water heaters are typically shipped ready to fire on natural gas. Check the water heater rating plate to determine which fuel the water heater is s...

  • Page 37

    37 nominal iron pipe size (inches) natural gas pipe capacity chart length of pipe in straight feet for 1/2 psi 10 20 30 40 50 60 70 80 90 100 125 150 175 200 1/2 175 120 97 82 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 3/4 369 256 205 174 155 141 128 121 113 106 95 86 79 74 1 697 477 384 328 292 267 24...

  • Page 38

    38 7 gas connections gas pressure the gas pressure must remain between 4 inches w.C. (natural), 8 inches w.C. (lp) minimum and 14 inches w.C. (natural and lp) maximum during stand-by (static) mode and while in operating (dynamic) mode. If an in-line regulator is used, it must be a minimum of 10 feet...

  • Page 39

    39 8 field wiring electrical shock hazard – for 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. Wiring must be n.E.C. Class 1. If original wiring as supplied wi...

  • Page 40

    40 8 field wiring figure 8-3 low voltage field wiring connections buildi n g m a nag m ent sy st em alar m bell low w a t e r cu t o f f installation & service manual tm.

  • Page 41

    8 field wiring (continued) 41 figure 8-4 control inputs/outputs tank sensor low voltage connection board inlet temperature sensor outlet temperature / high limit sensor flue gas sensor flame sensor low water cutoff blocked drain switch display panel control board blocked air inlet pressure switch lo...

  • Page 42

    42 9 condensate disposal condensate drain 1. This water heater is a high efficiency appliance that produces condensate. 2. Slope condensate tubing down and away from the water heater into a drain or condensate neutralizing filter. Condensate from the shield water heater will be slightly acidic (typi...

  • Page 43

    43 10 start-up chlorine concentration less than 200 ppm 1. Do not fill the water heater or operate with water containing chlorine in excess of 200 ppm. 2. Filling with chlorinated fresh water should be acceptable since drinking water chlorine levels are much lower. 3. Do not use the water heater to ...

  • Page 44

    44 10 start-up start the water heater 1. Read and follow the operating instructions in fig.’s 10-2 and 10-3, pages 45 and 46. If water heater does not start correctly 1. Check for loose connections, blown fuse or service switch off. 2. Is external limit control (if used) open? Is water temperature a...

  • Page 45

    45 figure 10-2 operating instructions - models snr150-100 -- sna285-125 10 start-up (continued) installation & service manual tm.

  • Page 46

    46 figure 10-3 operating instructions - models sna400-125 -- sna500-125 10 start-up installation & service manual tm.

  • Page 47

    47 11 operating information general how the water heater operates the shield water heater combines an advanced stainless steel heat exchanger, electronic control module, and tank that allows fully condensing operation. The blower pulls in air and pushes flue products out of the heat exchanger and fl...

  • Page 48

    48 water heater temperature regulation operating temperature (target) the electronic control module senses water temperature in the tank and regulates water heater ignition and firing rate to achieve a target temperature. The target temperature can be set between 60°f and 185°f. High limit operation...

  • Page 49

    49 11 operating information (continued) operation display 1. When the tank temperature falls below the set point minus the differential, the control will start the burner. Htr: standby tank: 123.8f(129) 2. The control connects 120 vac to the blower. The blower does not run at this time. • the manual...

  • Page 50

    50 shield control module • press once to go into menu mode • press again to exit menu mode • press to toggle between digits when entering the hour, minutes, etc., or when entering date and time figure 11-1 control panel use the control panel (fig. 11-1) to set temperatures, operating conditions, and...

  • Page 51

    51 11 operating information (continued) status display screens by using the previous/next ( , ) arrow keys on the electronic control module display panel, you can navigate through the five (5) display screens. Each screen will contain two (2) viewable items. The following is a description of the ind...

  • Page 52

    52 11 operating information status display screens (cont’d) by using the previous/next ( , ) arrow keys on the electronic control module display panel, you can navigate through the five (5) display screens. Each screen will contain two (2) viewable items. The following is a description of the indivi...

  • Page 53

    53 12 maintenance maintenance and annual startup table 12a 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 water • check...

  • Page 54

    54 12 maintenance 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 to follow the directions in this manual...

  • Page 55

    55 12 maintenance (continued) 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 water ...

  • Page 56

    56 12 maintenance 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 electrodes cannot be cleaned satisfactor...

  • Page 57

    57 12 maintenance (continued) cleaning heat exchanger 1. Shut down water heater: • follow the “to turn off gas to appliance” instructions for the water heater on pages 45 and 46. • do not drain the water heater unless it will be exposed to freezing temperatures. 2. Allow time for the water heater to...

  • Page 58

    58 13 troubleshooting 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 property damag...

  • Page 59

    59 13 troubleshooting (continued) table 13a troubleshooting chart - no display fault cause corrective action no display - no 120 vac supplied to unit. • check external line switch, fuse, or breaker. • check wiring harness connection between display board and main control board. Connect harness at bo...

  • Page 60

    60 13 troubleshooting table 13b - inlet/outlet tank 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 -- -- table 13c - flue temperature sensor resistance vs...

  • Page 61

    61 13 troubleshooting (continued) table 13d 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 to...

  • Page 62

    62 13 troubleshooting table 13e troubleshooting chart - fault messages displayed on water heater interface fault description corrective action flame sequence (will require a manual reset once the condition has been corrected. Press the reset button on the display to reset.) the flame detector circui...

  • Page 63

    63 13 troubleshooting (continued) table 13e (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 button on the...

  • Page 64

    64 13 troubleshooting table 13e (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 button on the disp...

  • Page 65

    65 13 troubleshooting (continued) table 13e (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 the reset but...

  • Page 66

    66 13 troubleshooting table 13e (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 water heater. ...

  • Page 67

    67 13 troubleshooting (continued) table 13e (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 a draw to re...

  • Page 68

    68 13 troubleshooting combustion analysis procedure 1. Press the shutdown button on the display until htr:off appears in the display window. 2. Remove the screws securing the top panel to the unit. Remove the panel from the unit to gain access to the flue sensor. 3. Locate the flue sensor in the top...

  • Page 69

    69 13 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 snr150-100 -- sna285-125 locate the throttle adjustment screw on the side of the venturi valve (f...

  • Page 70

    70 14 diagrams box depicts optional items ladder diagram lbl20026 rev a 120 vac 24 vac 120vac terminal strip 120v supply "l" x1-6 dhw pump relay blower relay x1-3 x1-1 dhw pump "l" dhw pump dhw pump "n" 1 2 3 blower junction box x1-5 x6-8 x6-3 f5 x5-7 x6-7 neutral cn2-4 cn2-10 connection board cn2-6...

  • Page 71

    71 14 diagrams (continued) display x1-8 x5-5 x5-13 x5-6 x5-12 integrated control blower x1-1 x2-2 x2-1 x1-7 gas valve flame rod spark rod w/r g r r t w bk g r 1 3 2 w g box depicts optional items wiring diagram lbl20025 rev a warning disconnect power before servicing inlet sensor outlet sensor flue ...

  • Page 72

    Revision notes: revision a (eco #c02299) initial release. Revision b (eco #c02870) reflects the addition of a mixing valve to the piping diagrams (fig.’s 6-2 and 6-3, pgs. 32 - 34). Revision c (eco #c02738) reflects edits made to the gas valve adjustment procedure for model sna400-125 on page 69. Re...