BOSCH
INSTALLATION
AND
OPERATING
INSTRUCTIONS
FOR
AUTOMATIC
INSTANTANEOUS
TYPE
WATER
HEATER
FOR
USE
WITH
NATURAL
AND
LIQUEFIED
PETROLEUM
GAS
MODEL 125FX LP and 125FX NG
(Flow Modulated with Electronic Ignition and Power Venting)
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
- Close gas valve. Open windows.
- 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.
.-J
,<
O
WARNING:
Improper
installation,
adjustment,
alteration,
service or maintenance
can cause
®
injury
or property
damage.
Refer
to this
manual.
For
LO
o
assistance
or additional
information
consult
a qualified
LO
o
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
or gas fitter.
FEATURING:
Electronic
Ignition and Power Venting
TABLE OF CONTENTS
Specifications
............................................. Page 2
Rules for safe operation
........................... Page 4
Locating
the Heater .................................. Page 4
Combustion
Air Requirements
................ Page 5
Mounting
the Heater ................................. Page 6
Venting the Heater .................................... Page 7
Gas Connections
.................................... Page 10
Water Connections
................................. Page 12
Electrical
Safety before turning
on the heater .... Page 14
Lighting and Operating
instructions
.... Page 14
Setting water temperature
..................... Page 14
Maintenance
& Service .......................... Page 15
Trouble Shooting
...................................... Page 16
Diagram of AquaStar
.............................. Page 19
Components