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Bosch AQ 125BO LP Use And Care Manual

Outdoor water heater
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BOSCH
MODEL
125BO LP and 125BO NG - OUTDOOR
MODEL
For exterior use only
Piezo Ignition
Suitable
for heating potable water only
Not approved for space heating purposes
AQ 125 BO NG - Natural Gas
AQ 125 BO LP - Liquefied
Petroleum
(LP) Gas
-J
LO
o
CO
_O
oo
Warning:
If the information
in this manual is not
followed
exactly,
a fire or explosion
may result
causing property
damage, personal injury or death.
Do not store or use gasoline
or other flammable
vapor and liquids in the vicinity of this or any other
appliance.
Improper
installation, adjustment,
alteration, service
or
maintenance
can
cause
injury
or
property
damage.
Refer to this
manual. For assistance
or
additional
information
consult
a qualified
installer,
service agency or the gas supplier.
In
the
Commonwealth
of
Massachusetts
this
product
is
approved
only
for
seasonal
use.
Installation
must
be
performed
by
a licensed
plumber or gas fitter.
Upon
completion
of
the
installation,
these
instructions
should
be handed to the user of the
appliance
for future reference.
What
to do if you smell gas
Close gas valve.
Do not try to light any appliance.
Do not touch
any electrical
switch;
do not use any
phone in your building.
If you cannot
reach your gas supplier,
calI the fire
department.
Immediately
calI your gas supplier
from a neighbor's
phone. Follow the gas supplier's
instructions
Installation
and
service
must
be performed
by a
qualified installer, service agency or the gas supplier.

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  Summary of Contents for Bosch AQ 125BO LP

  • Page 1 BOSCH MODEL 125BO LP and 125BO NG - OUTDOOR MODEL For exterior use only Piezo Ignition Suitable for heating potable water only Not approved for space heating purposes AQ 125 BO NG - Natural Gas AQ 125 BO LP - Liquefied...
  • Page 2: Table Of Contents

    Index Index Warning Warning Appliance details Features AQ125 BO specifications (Technical data) Unpacking the AQ-1 25-BO heater General rules to follow for safe operation Dimensions and installation clearances Installation instructions Introduction Proper location for installing your heater Heater placement and clearances Mounting installation Gas piping &...
  • Page 3 Warning What to do if you smell gas • Close gas valve. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor's phone.
  • Page 4: Appliance Details

    Easy one person installation • Easy Pilot Flame Ignition with push button piezo Gas types ignition. Natural Gas. LP Gas BOSCH constantly improving products, therefore specifications Safety devices subject to change without prior notice. • Flame failure device (ionization flame rod sensor) •...
  • Page 5: Unpacking The Aq-1 25-Bo Heater

    Appliance details General rules to follow for safe Unpacking the AQ-125-BO heater operation This heater is packed securely. Before installing the unit, be certain you have the • 1. You should follow these instructions when install your heater. In the United States: correct heater for your type of Gas - Propane or...
  • Page 6: Dimensions And Installation Clearances

    Appliance details Dimensions and installation clearances 10_½ " 18" WATER INLET WATER OUTLET INLET AQ125B 10.JS Fig. 3 Dimensions Fig, 4 Minimum clearances 3ft. 4 ft. 0" 4 ft. 1 ft. Table 1 Minimum clearances 8 716 473 147...
  • Page 7: Installation Instructions

    Installation instructions Installation instructions Introduction Please follow these instructions. Failure follow instructions may result in: • Damage or injury. • Improper operation. • Loss of warranty. Please contact BBT North America with any questions. Proper location for installing your heater Carefully select the location of the water heater.
  • Page 8: Heater Placement And Clearances

    Installation instructions Heater placement and clearances Mounting installation AQ125 is design certified installation directly on a combustible wall. (see 3.4 Mounting installation). For installation on vinyl siding see Fig. 7. Keep the area below the heater free of combustible material. Minimum clearances If the appliance...
  • Page 9 Installation instructions Vinyl siding Vinyl siding Fig. 7 • Secure heater to wall using enclosed mounting screws, Use mounting template for proper screw location. • Locate head of screw in the key hole of the top mounting bracket. Vent Safety System The AQ125 BO will shut down if the intake or exhaust louvers on the vent cap are blocked for any reason;...
  • Page 10: Gas Piping & Connections

    Installation instructions Gas piping & connections Before connecting the gas supply, check the rating plate on the right side of the heater to be sure that the heater is rated for the same gas to which it will be connected. In the United States: The installation must conform with...
  • Page 11 Installation instructions FOR NATURAL Maximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure drop of 0.3 in Water Column (0.75mbar).(Based on a 0.60 Specific Gravity Gas) Btu numbers given in thousands.
  • Page 12: Measuring Gas Pressure

    Installation instructions Measuring gas pressure are no loose particles or dirt in the piping. Blow out or flush the lines before connecting to the water heater. Connecting manometer Full port valves should be installed on both the cold water supply and hot water outlet lines to facilitate...
  • Page 13: Electrical Connections

    Installation instructions Electrical connections The 125 BO requires an electrical power supply from a 120VAC 60Hz circuit and must be properly grounded. A means for switching off the 120VAC power supply must be provided. 8716473147...
  • Page 14: Operation Instructions

    Operation instructions Operation instructions For your safety read before 8. Observe the pilot flame through the peephole. gas valve button should be held down for at least 15 operating your water heater seconds with pilot burning. When the gas valve button is released, the pilot should continue to burn.
  • Page 15 Operation instructions GAS CONTROL SLIDE ADJUSTMENT KNOB Fig. 10 Temperature Adjustment Controls Temperature adjustment knob The temperature adjustment knob on the front bottom of heater (see Fig. 10) adjusts temperature adjusting flow capacity. See table 4 for details. Degree rise 90°F 45°F Activation...
  • Page 16: Maintenance And Service

    Maintenance and service Maintenance and service Maintenance intervals Pilot The 125 BO requires periodic maintenance. The below Inspecting pilot time maintenance intervals should kept unit The pilot should burn with a clean sharp blue flame. The operating for many years. flame should fully envelope the bend of the flame sensor rod.
  • Page 17: Troubleshooting

    Troubleshooting Troubleshooting Introduction millivoltage from the thermocouple lead to ground. The expected reading is 24mVDC or greater. Many questions customers regarding operation of this unit can be answered by following Burners do not ignite with water troubleshooting steps as outlined below.
  • Page 18: Water Is Too Hot

    Troubleshooting 5. Service water valve See chapter 5.2 for intervals and instructions. 6. ECO (overheat sensor) tripped due to overheating re-ignite the appliance 10 minutes later. If it happens again, contact your service person. Water is too hot • 1. Check gas type on right side panel rating plate.
  • Page 19: Interior Components And Diagram Parts List

    Interior components and diagram parts list Interior components and diagram parts list Interior components Fig. Functional scheme Water valve Heat exchanger Gas control slide Pilot assembly Electronic control box Burner manifold gas pressure test nipple Main gas burner Temperature adjustment selector Pilot gas tubing on/off switch 8716473147...
  • Page 20: Components Diagram

    Interior components and diagram parts list Components diagram ® Fig, 13 Components Diagram 8 716 473 147...
  • Page 21: Parts List

    Interior components and diagram parts list Parts list Screw 8 716 461 314 Heat exchanger 8 705 406 235 0 Temperature limit 8 707 206 017 0 Hot water pipe 8 716 416 714 Thermocouple 8 707 202 087 0 Burner 8 708 120 298 0 (NG) Burner...
  • Page 22: Protecting The Environment

    Protecting the environment Protecting the environment Packing The packing box may be fully recycled as confirmed the recycling symbol &_3' Components Many parts in the heater can be fully recycled in the end of the product life, Contact your city authorities information about the disposal of recyclable...
  • Page 23: Twelve Year Limited Warranty

    Technical Support Department: The Heat Exchanger BBT NORTH AMERICA If the heat exchanger fails within twelve (12) years after Bosch Group the original installation and operation BBTNA will 340 Mad River Park furnish a replacement heat exchanger. However, if the...
  • Page 24 (to be filled out by installer) Installation manual should be left with the owner after the installation is tested and completed Replacement Parts available from: BBT NORTH AMERICA Bosch Group VULCANO Termodomesticos S.A, Bosch Water Heating Mad River Park...