Bosch 125HX NG - Manual
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Table of Contents:
- Page 2 – FEATURES; AquaStar 125HX LP and 125HX NG Specifications; UNPACKING THE AQUASTAR HEATER
- Page 3 – BACK; * Some local codes require 18” in garage installations
- Page 4 – WARNING: The water in this water heater is cold
- Page 5 – b) In unconfined spaces in buildings of conventional frame,; - 4000 Btu/hr if all air is taken from the outside by direct
- Page 6 – See figure 2; VENTING; ” X 6” ADAPTOR
- Page 7 – WARNING: The heater must be disconnected from; Altitude; Above 4.500 ft consult your local gas provider.; MAXIMUM INLET GAS FLOW PRESSURE SETTING
- Page 8 – GAS PIPING, CONNECTIONS and Gas Regulator
- Page 9 – WATER CONNECTIONS; Connecting the pressure relief valve (PRV); Plumbing connections for the Aquastar; THREADED ASSEMBLY
- Page 10 – LIGHTING AND OPERATING INSTRUCTIONS; switch to position “; SETTING THE WATER TEMPERATURE; Temperature Adjustment Knob
- Page 11 – (Pilot assembly shown without pilot hood); MAINTENANCE AND SERVICE; Fig. 11 - Pilot burner with pilot orifice; (Pilot assembly shown without pilot hood
- Page 12 – NO SPARK AT THE PILOT
- Page 13 – Contact your service person or Controlled Energy.
- Page 15 – Diagram of AquaStar 125 HX
- Page 16 – - INTERIOR COMPONENTS DIAGRAM AND PARTS LIST
- Page 17 – INTERIOR COMPONENTS DIAGRAM
- Page 20 – CONTROLLED ENERGY CORP.; Estrada de Cacia; INSTALLATION CHECKLIST; Natural Gas; Nominal Iron Pipe Size*; Liquid Propane; MAXIMUM LENGTH; NOT; Minimum Vent Size* and Height; Minimum Diameter; Water Pressure
WA R N I N G
: I m p r o p e r i n s ta l l a t i o n ,
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.
Upon completion of the installation, these instructions
should be handed to the user of the appliance for
future reference.
In the Commonwealth of Massachusetts this product
must be installed by a licensed plumber.
FEATURING: Automatic Variable Power Modulating Gas
Valve and power generated Electronic Ignition
I N S TA L L AT I O N A N D O P E R AT I N G I N S T R U C T I O N S F O R A U TO M AT I C
INSTANTANEOUS TYPE WATER HEATERS FOR USE WITH NATURAL AND
LIQUEFIED PETROLEUM GAS
MODEL 125HX LP and 125HX NG
(Flow Modulated with Electronic Ignition)
Suitable for heating potable water only
Not approved for space heating purposes
Intended for variable flow applications with steady cold water inlet temperatures.
WARNING
If the information in this manual is not followed
exactly, a fire or explosion may result causing property
damage, personal injury or death.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable,
combustible or corrosive vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
- 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. Follow the gas supplier’s instructions.
- If you cannot reach your gas supplier, call the fire
department.
- Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
Specifications .................................................... Page 2
Rules for safe operation .................................... Page 4
Locating the Heater ............................................ Page 4
Combustion Air Requirements ............................ Page 5
Mounting the Heater ........................................... Page 5
Venting the Heater ............................................. Page 6
Gas Connections ............................................... Page 7
Gas Piping ......................................................... Page 8
Water Connections ............................................ Page 9
Safety before turning on the heater ..................... Page 9
Operating instructions ...................................... Page 10
Setting water temperature ................................ Page 10
Maintenance & Service ...................................... Page 11
Trouble Shooting ............................................... Page 11
Electrical Diagram ............................................ Page 13
Diagram of AquaStar ......................................... Page 15
Interior components diagram ............................ Page 16
Parts List ......................................................... Page 17
TABLE OF CONTENTS
6 720 606 804 (02.10)
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Summary
2 6 720 606 804 (02.10) Principle of Operation:When a hot water faucet is opened, the water flow throughthe heater causes the gas valve to open. At the sametime the hydro-generator activates the electronics whichsends a spark to the pilot. The flame sensor confirms thepilot has been lighted and allo...
3 6 720 606 804 (02.10) MINIMUM INSTALLATION CLEARANCES FROM COMBUSTIBLE AND NONCOMBUSTIBLE MATERIALS FOR ALCOVE OR CLOSET INSTALLATIONS FRONT VIEW SIDE VIEW AQUASTAR MODEL 125HX MODEL 125 HX TOP (A) 12" FRONT (B) 4" BACK 0" SIDES 4" FLOOR (C) 12" * VENT DIAMETER 5" * Some lo...
4 6 720 606 804 (02.10) GENERAL RULES TO FOLLOWFOR SAFE OPERATION 1. You should follow these instructions when you installyour heater. In the United States: The installation mustconform with local codes or, in the absence of local codes,the National Fuel Gas Code ANSI Z223.1/NFPA 54.In Canada: The I...
