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GENERAL RULES TO FOLLOW
FOR SAFE OPERATION

1.

You should follow these instructions when you install your

heater.  In the United States: The installation must conform
with  local  codes  or,  in  the  absence  of  local  codes,  the
National Fuel Gas Code ANSI Z223.1/NFPA 54.
In  Canada:  The  Installation  should  conform  with  CGA
B149.(1,2) INSTALLATION CODES and /or local installation
codes.

2.

Carefully  plan  where  you  install  the  heater.  Correct

combustion  air  supply  and  flue  pipe  installation  are  very
important. If not installed correctly, fatal accidents can be
caused by lack of air, carbon monoxide poisoning or fire.

3.

The place where you install the heater must have enough

ventilation. The National Fire Codes do not allow gas fired
water  heater  installation  in  bathrooms,  bedrooms  or  any
occupied rooms normally kept closed. See the section below
on locating the heater.

4.

You  must  vent  your  heater.  See  section  on  VENTING,

Page 7.

5.

The appliance must be disconnected from the gas supply

piping system during any pressure testing at pressures in
excess of 1/2 Psig (3.5 kPa).
The appliance must be isolated from the gas supply piping
system by closing its individual manual shutoff valve during
any pressure testing of the gas supply piping system at test
pressures  equal  to  or  more  than  1/2  Psig  (3.5Kpa).    The
appliance and its gas connection must be leak tested before
placing the appliance in operation.

6.

Keep water heater area clear and free from combustibles

and  flammable  liquids.  Do  not  locate  the  heater  over  any
material which might burn.

7. Correct  gas  pressure

  is  critical  for  the  optimum

operation of this heater (see specifications on page 2). Gas
piping must be sized to provide the required pressure at the
maximum  output  of  the  heater,  while  all  the  other  gas
appliances  are  in  operation.  Check  with  your  local  gas
supplier, and see the section on connecting the gas supply.

8.

Should overheating occur or the gas supply fail to shut

off, turn off the gas supply at the manual gas shut off valve
on the gas line.

9.

Do not use this appliance if any part has been underwater.

Immediately  call  a  qualified  service  technician  to  inspect
the appliance and to replace any part of the control system
and any gas control which has been underwater.

PROPER LOCATION FOR INSTALLING YOUR
HEATER

Carefully  select  the  location  of  your  new  heater.  For  your
safety and for proper heater operation, you must provide an
abundant supply of combustion air and a proper venting.

Fig. 1 - Water heater drain plug

The heater may still operate even when improperly vented.
It will, however, be less efficient and could eventually damage
the heater. It could even result in human sickness or death
due to oxygen deprivation and carbon monoxide poisoning.
Follow the guidelines below:

1.

Place  your  heater  as  close  to  a  vent  or  chimney  as

possible.

2.

National  building  codes  require  that  you  do  not  install

this  appliance  in  bathrooms,  bedrooms  or  any  occupied
rooms normally kept closed.

3.

Simultaneous  operation  of  other  appliances  such  as

exhaust fans, ventilation systems clothes dryers, fireplaces
or wood stoves  could create a vacuum effect in your home
which could cause dangerous combustion by-products to
spill back into your home rather than venting to the outside
through  the  flue.  Confirm  that  your  125  HX  is  venting
properly when all these other appliances are running. See
section on venting.

Do not obstruct the flow of combustion and ventilation
air to the appliance.

  If installed near a clothes dryer it is

very important that the dryer be properly vented. Failure to
properly vent a dryer could result in a gradual accumulation
of lint on the water heater fin coils and burners, leading to a
dangerous  condition  of  vent  blockage  and  poor  unsafe
combustion.

4.

Your hot water lines should be kept short to save energy.

It is always best to have hot water lines insulated.

5.

This product is neither designed nor approved for outside

installations. This product is not approved for manufactured
homes (mobile home), recreational vehicles (RV) or boats.
Reference ANSI Z21.10.3.

WARNING:

 

The water in this water heater is cold and

always remains cold except  for the times that hot water is
being used

 

DO NOT INSTALL IN  AN AREA WHERE IT

COULD FREEZE.
This  heater  is  neither  designed  for  nor  approved  for
outside installation

.

Drain  the  heater  entirely  if  freezing  temperatures  are
anticipated  in  area  where  heater  is  installed  by
disconnecting both the inlet and outlet water connections
from the heater (disconnect the outlet flex line from where
it connects to the copper heat exchanger). Additionally
remove the drain plug under the water valve. 

See Fig. 1.

Содержание 125HX

Страница 1: ...sing 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 Follo...

Страница 2: ...f 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 ...

Страница 3: ... will not exceed the heating capacity of the heater On Off Switch to activate system Red LED indicator flashes with low water pressure Green LED indicator main burner operation BOSCH is constantly improving our products therefore specifications are subject to change without prior notice 125 HX LP and 125 HX NG Specifications Gas Input max 117 000 Btu hr min 28 000 Btu hr Water Connection Thread fi...

Страница 4: ...INIMUM INSTALLATION CLEARANCES FROM COMBUSTIBLE AND NON COMBUSTIBLE MATERIALS FOR ALCOVE OR CLOSET INSTALLATIONS FRONT VIEW SIDE VIEW MODEL 125HX MODEL 125 HX TOP A 12 FRONT B 4 BACK 0 SIDES 4 FLOOR C 12 VENT DIAMETER 5 ...

Страница 5: ...control which has been underwater PROPER LOCATION FOR INSTALLING YOUR HEATER Carefully select the location of your new heater For your safety and for proper heater operation you must provide an abundant supply of combustion air and a proper venting Fig 1 Water heater drain plug The heater may still operate even when improperly vented It will however be less efficient and could eventually damage th...

Страница 6: ...ng 2000 Btu hr if all air is taken from the outside by horizontal ducts 4000 Btu hr if all air is taken from the outside by direct openings or vertical ducts Or the confined space must be provided with one permanent opening or duct that is within 12 inches of the ceiling of the enclosure This opening must have a minimum free area of one square inch per 3000 Btu hr if all air is taken from the outs...

Страница 7: ...s stamped with a number 79 for LPG and 120 for Natural Gas Fig 2 Mounting the Heater WALL STUDS 1 X 4 SPACE BOARD SUPPORT BOARD 13 Fig 3 Incandescent Particle Tray Illustration The incandescent particle tray shipped loose in the carton with the water heater must be attached at the bottom of the water heater front cover at the time of installation Use the screws provided See figure 3 SCREWS INCANDE...

Страница 8: ...ter heater to a masonry chimney the following connector guidelines must be followed for safe and proper operation An approved gas vent connector must be attached to the top of the water heater and rise vertically at least 12 before entering into an approved gas vent connector elbow Any gas vent section that is greater than 45 degrees from the vertical is considered horizontal If a horizontal vent ...

Страница 9: ...the gas lines or malfunction of the supply system the gas valve and regulator must be checked for safe operation Make sure that the regulator vent is protected against blockage When your connections are made check for gas leaks at all joints not just the ones you made Apply some soapy water to all gas fittings and gas valve Soap bubbles are a sign of a leak NOTE Do not apply soap solution to the p...

Страница 10: ...l length of piping and then adding 5 ft for every elbow or T to the actual length Use the charts below to determine the pipe diameter necessary to accommodate the BTU demand of the unit If there are more gas drawing appliances on the line size according to the maximum amount of BTU demand Follow boxed numbers for piping just one 125 HX example 3 4 B I Natural Gas pipe for 30 ft will handle 152 000...

Страница 11: ...runs as short as possible When facing the heater the cold water inlet will be on the right and the hot water outlet on the left Although water piping throughout the building may be other than copper copper or galvanized piping should be used when connecting to the heaters male NPT flex connectors follow local codes if more stringent Plastics or other PEX type plumbing line materials are not suitab...

Страница 12: ...icator light is flashing this is a warning that the water pressure is not enough to ignite the main burner 6 Turn the hot water faucet on to the minimum flow rate required to activate the heater The automatic ignition system first ignites the safety pilot burner which then ignites the main burner in about 4 seconds 7 The green LED indicator is on when the main burner is on 8 The pilot flame will e...

Страница 13: ...have yellow flames while others have good flames it is likely that dust lint or spider webs have partially clogged the burner venturis To clean the burners contact a gas service person Mineral Scale Build up The 125 HX heater when operated at lower temperature settings does not accumulate mineral build up If however the heater is used at the higher temperature settings and the water has a high min...

Страница 14: ...and component parts must be totally free of dirt In hard water areas mineral deposits can eventually 3 5 years in hard water areas corrode the water valve parts to a point where they will need replacing Any sign of moisture or corrosion at the joint of the water valve and the gas valve is a sign that the water valve components need to be serviced immediately 7 Poor circuit connections at the ECO o...

Страница 15: ...is mixing with the hot water between the 125 HX and the outlet Compare water temperature at outlet of the 125 HX hold the 125 HX outlet pipe with your hand and at the tap If these two are very different check for mixing valve or plumbing crossover see NO SPARK AT THE PILOT paragraph 2 5 Parts in water valve are dirty or damaged which will prevent the gas valve from being fully opened Water valve m...

Страница 16: ... reduce such hot water temperature in the event of any temperature instability with the use of a temperature balance shower valve refer to shower valve manufactures instructions for internal adjustment setting Adjustments should be made to the hottest setting in the shower valve Additionally the temperature control of the heater can be adjusted to produce a more comfortable hot water temperature S...

Страница 17: ...ner manifold gas pressure test nipple 4 Main gas burner 5 Pilot gas tubing 6 LED failure indicator 7 on off switch 8 LED operation indicator 9 Water valve 10 Temperature adjustment selector 11 Gas inlet gas pressure test nipple 12 Hose 3 1 4 10 11 2 9 8 6 7 5 12 6 720 606 804 10 1AL ...

Страница 18: ...18 6 720 606 804 Fig 15 INTERIOR COMPONENTS DIAGRAM AND PARTS LIST ...

Страница 19: ...7 Pilot electrovalve 8 708 501 249 18 Burner electrovalve 8 708 501 250 19 O ring 8 700 205 023 20 Hydro generator 8 707 406 043 21 Cold water pipe 8 700 705 947 22 Outlet flex hose 8 700 703 139 23 Washer 8 700 103 658 24 Water valve 8 707 002 649 25 Water valve cover 8 705 500 101 26 Diaphragm 8 700 503 053 27 Water inlet filter 8 700 507 001 28 Water valve selector screw 8 708 500 289 29 Volume...

Страница 20: ...20 6 720 606 804 Fig 16 Flow chart of 125 HX ...

Страница 21: ... in normal use and service within the applicable periods specified below in accordance with the terms of this warranty The CEC replacement will be warranted for the unexpired portion of the original warranty This warranty will be valid only for water heaters in possession of the original purchaser as recorded on the warranty card The Heat Exchanger If the heat exchanger fails within twelve 12 year...

Страница 22: ...22 6 720 606 804 ...

Страница 23: ...23 6 720 606 804 ...

Страница 24: ...ield Vermont 05673 Phone 800 642 3111 Fax 802 496 6924 www controlledenergy com tech techsupport controlledenergy com 3 1 e g a p e e s E L B A T E C N A N E T N I A M R A E Y Y R E V E S R A E Y 2 Y R E V E S R A E Y 5 3 Y R E V E E V L A V R E T A W E T A C I R B U L E V L A V R E T A W D L I U B E R N E E R C S R E T L I F R E T A W T C E P S N I Y L B M E S S A T O L I P T C E P S N I Y L B M ...

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