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WARNING

Improper installation, adjustment, alteration, 

service or maintenance can cause serious injury 

or property damage. Refer to this manual.  

For assistance or additional information,  

consult a qualified installer or service agency.

WARNING

If the information in these instructions is not 

followed exactly, a fire or explosion may result 

causing property damage, personal injury or 

death.

WARNING

Do not install on combustible flooring.  

Install in accordance with all local codes.  

In the  absence of local codes, refer to ANSI 223.1/

NFPA 54 and/or CSA B149.1.

CAUTION

The recommended temperature for normal 

residential use is 120°F. The dial on the aquastat 

does not always reflect the out-coming water 

temperature and it could occasionally exceed 

120°F. Variation in out-coming temperature could 

be based on factors including but not limited to 

usage patterns and type of installation. Test water 

at the tap nearest to the water heater. See page 9 

for measuring the out- coming water temperature.

WARNING

Hotter water increases the risk of scald injury. 

Before adjusting the water temperature setting, 

read this instruction manual. Temperatures 

at which injury occurs vary with the person’s 

age and the length of exposure. The slower 

reaction time of children, elderly or physically 

or mentally challenged persons increases the 

scalding hazard to them. It is recommended that 

lower water temperatures be used where these 

exposure hazards exist. Households with small 

children or invalids may require a temperature 

setting less than 120°F to prevent accidental 

contact with hot water.

 To produce less than 

120°F, use point-of-use temperature limiting 

devices.

If higher water temperature is needed in part 

of the water system, automatic temperature 

limiting devices must be used on all lines to 

water taps.

WARNING

Flammable vapors may be drawn to this water 

heater from other areas of the structure by air 

currents. Do not store or use any flammable 

liquids in the vicinity of this heater.

WARNING

Water heater blankets may restrict air flow to 

the water heater and cause fire, asphyxiation, 

personal injury or death.

THIS MANUAL HAS BEEN PREPARED TO 

 ACQUAINT YOU WITH THE INSTALLATION, 

OPERATION, AND MAINTENANCE OF 

YOUR WATER HEATER AND TO PROVIDE 

IMPORTANT SAFETY INFORMATION.

Read all instructions thoroughly before 

attempting installation or operation of your 

water heater. Keep these instructions for future 

reference.
Local plumbing and electrical codes must 

be followed in the installation of this water 

heater. In the absence of a local code use the 

UNIFORM PLUMBING CODE and the NFPA 

Code. Local codes may supersede instructions 

in this installation manual.
These instructions are a guide for the correct 

installation of the water heater. The manufac-

turer will not be liable for damages caused by 

failure to comply with the installation and  

operating instructions outlined on the  

following pages.
Installation, testing, and replacement of gas 

piping, appliances, or accessories, and repair 

and servicing of equipment, shall be performed 

only by a qualified agency.

FAILURE TO FOLLOW THESE INSTRUCTIONS 

OR ALL APPLICABLE BUILDING CODES  

AND REGULATIONS VOIDS THE WARRANTY 

ON THIS WATER HEATER.

Warranty, Registration Card and Parts List are included.

Homeowner: Please remember to return the Registration Card!

To the Consumer:

  

Please read these and all component  

instructions and keep for future reference.

To the Installer:

  

Please attach these instructions  

next to the water heater.

Rev5 3/21

Atmospheric Gas 

Instruction Manual

23405

EZ 75-76, EZ 100-76

Summary of Contents for EzFit EZ 100-76

Page 1: ...perature is needed in part of the water system automatic temperature limiting devices must be used on all lines to water taps WARNING Flammable vapors may be drawn to this water heater from other areas of the structure by air currents Do not store or use any flammable liquids in the vicinity of this heater WARNING Water heater blankets may restrict air flow to the water heater and cause fire asphy...

Page 2: ...ection III Pre Installation 7 Section IV Installation 10 Section V Operation 13 Section VI Maintenance 15 Section VII Troubleshooting 16 Section VIII Parts List 17 Section IX Warranty 19 DANGER Water heaters utilizing Liquefied Petroleum gas LP are different from natural gas models A natural gas heater will not function safely on LP gas and vice versa To avoid possible equipment damage personal in...

Page 3: ...rature becomes excessive 200 F the ECO will shut off all gas to the water heater If an ECO has detected an over temperature condition and has opened the control will not function and a replacement will be required The thermostat is factory set at 120 F See Figure 6 for thermostat letter and temperature relationships If hotter water is required a tempering device or anti scald device must be instal...

Page 4: ...ing of the lever or the normal operation of the T P valve If it is not piped to a proper drain If the valve fails to flow water or reseat call your plumber The T P valve is factory installed A discharge drain tube must be installed responsibility of the installer and shall terminate plain not threaded 6 inches above the floor drain The drain tube material must be approved for temperatures of 120o ...

Page 5: ...tu hr of the combined total input of all fuel burning appliances in the space Each opening shall have an area of not less than 100 square inches or a minimum dimension of not less than 3 inches Figure 2 SECTION III PRE INSTALLATION cont CONFINED SPACE CONT B Outside Air Supply Confined spaces shall be provided with two permanent openings one within 12 inches of the top and one within 12 inches of ...

Page 6: ...e the National Fuel Gas Code NFPA 54 DANGER Substitution elimination or relocation of the draft hood will result in unsafe operation and void the warranty of your water heater Improper venting or misuse of the draft hood can result in unsafe operation causing bodily injury explosion fire or death To avoid the risk of fire explosion or asphyxiation from carbon monoxide NEVER operate this water heat...

Page 7: ...d remain lit If it goes out repeat steps 3 through 8 Do not use this appliance if any part has been under water 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 under water WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal in...

Page 8: ...be measured and monitored Run water out of the tap nearest the heater until it comes out warm Using a calibrated thermometer take a measurement If the water is not at a suitable temperature for the installation have a qualified service person adjust the temperature control Contact Bock for further information if needed This log or a similar one should be filled out as follows Date Time Person runn...

Page 9: ... Tighten connection at thermostat 1 Refer to lighting instructions 1 Gas control knob not positioned correctly 2 Air in gas line 2 Purge gas line 3 Excessive water temperature and pilot failure 3 Replace thermostat Water too hot or not hot enough 1 Thermostat set too high or low 1 Adjust setting as required 2 Thermostat out of calibration 2 Replace thermostat Insufficient hot water Rumbling noise ...

Page 10: ...e leak is due to a defect in materials and workmanship we will replace the tank with a tank that is the nearest Bock model available at the time of replacement If a replacement tank is provided it will remain warranted under this section as if it were the original tank For example if we send you a replacement tank under this limited warranty two years after the original installation date then the ...

Page 11: ...t somewhere else Fail to follow the care and maintenance instructions provided with the water heater Remove the anode rods Fail to inspect and replace the anode rods you must retain and present your paid receipts as proof of anode rod replacement HOW DOES STATE LAW RELATE TO THIS LIMITED WARRANTY This is a limited warranty WE MAKE NO OTHER EXPRESS WARRANTIES WITH RESPECT TO THIS WATER HEATER We wi...

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