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To the Installer:
Please attach these instructions
next to the water heater.
WARNING: If the information in these instructions is not followed exactly, a
fire or explosion may result causing property damage, pesonal injury or death.
– Do not store or use gasoline or other flammable
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.
W RNING
Improper installation, adjustment, alteration, ser-
vice or maintenance can cause serious injury or
property damage. Refer to this manual. For assis-
tance or additional information, consult a qualified
installer or service agency.
W RNING
Do not install on combustible flooring. Install in ac-
cordance with all local codes. In the absence of
local codes, refer to NFPA 54 or ANSI Z21.10.3.
C UTION
The recommended temperature for normal residen-
tial 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 11 for measuring the out-
coming water temperature.
W RNING
Hotter water increases the risk of scald injury. Be-
fore adjusting the water temperature setting, read
this instruction manual. Temperatures at which in-
jury occurs vary with the person's age and the
length of exposure. The slower reaction time of
children, elderly or physically or mentally chal-
lenged persons increases the scalding hazard to
them. It is recommended that lower water tempera-
tures be used where these exposure hazards exist.
Households with small children or invalids may re-
quire a temperature setting less than 120°F to pre-
vent accidental contact with hot water. To
produce less than 120°F, use point-of-use tem-
perature limiting devices.
23412
To the Consumer:
Installation and Operation Instructions Manual
Atmospheric Gas Water Heater
Models: EZ 75-135, EZ 80-156, EZ 80-199, EZ 90-199, EZ 100-199
Warranty, Registration Card and Parts List are included.
Homeowner: Please remember to return the Registration Card!
Please read these and all component
instructions and keep for future reference.
• Immediately call your gas supplier from a neigh-
bor'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.
If higher water temperature is needed in part of the
water system, automatic temperature limiting de-
vices must be used on all lines to water taps.
W RNING
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 fol-
lowed in the installation of this water heater. In the
absence of a local code use the UNIFORM PLUMB-
ING CODE and the NFPA Code. Local codes may su-
persede instructions in this installation manual.
These instructions are a guide for the correct instal-
lation of the water heater. The manufacturer will
not be liable for damages caused by failure to com-
ply with the installation and
operating instructions outlined on the
following pages.
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.
FAILURE TO FOLLOW THESE INSTRUCTIONS OR ALL
APPLICABLE BUILDING CODES
AND REGULATIONS VOIDS THE WARRANTY ON
THIS WATER HEATER.
Rev 6 6/16
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Related Manuals for Bock Water heaters ezFIT
Summary of Contents for Bock Water heaters ezFIT
- Page 1 To the Installer: To the Consumer: Please attach these instructions Please read these and all component next to the water heater. instructions and keep for future reference. Installation and Operation Instructions Manual Atmospheric Gas Water Heater Models: EZ 75-135, EZ 80-156, EZ 80-199, EZ 90-199, EZ 100-199 Warranty, Registration Card and Parts List are included.
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Page 2: Specifications
SPECIFICATIONS COLD Anode Rod (2) Draft Hood Flue Damper T&P Relief Valve Control Enclosure Hand Hole COLD Drain Chamber Inspection Port Figure 1: All Models Table 1: Dimensions D i m e n s i o n s ( i n c h e s ) Model EZ 75-135N 183 73.25 65.5... -
Page 3: Water Heater Placement
Figure 2. Consult with local code officials before using this method. Please consult local codes, NFPA 54 and/or contact Bock Water Heaters with questions concerning proper flooring materials. Leave adequate room for periodic maintenance of heater and burner. -
Page 4: Combustion And Ventilation Air
COMBUSTION AND VENTILATION AIR The water heater must be installed in a location with an adequate air supply for combustion, ventilation and draft control. Unsafe levels of carbon monoxide (CO), condensation and soot- ing may result if the room does not have an adequate air supply. See “National Fuel Gas Code (NFPA 54)”... - Page 5 VENTING The water heater shall be located as close to the chimney as practical. Long lateral runs will result in intermittent combustion problems and unsafe operating conditions. Total vent height should be a minimum of 6 feet. Shorter vent heights could result in unstable draft and nuisance lock outs.
- Page 6 VENTING (cont.) Table 2: Power Vent Terminal Clearances 36 inches (91 cm) 36 inches (91 cm) DRAFT HOOD, DAMPER AND REDUCER COLLAR ASSEMBLY Your Bock water heater is equipped with a vent hood, reducer collar and an electronic flue damper. This system has been specifically designed to give your Bock water heater exceptional reliability and safe operation.
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Page 7: Connect Water Piping
The Bock ezFIT series includes hot outlet and cold inlet water connections on the top and side of the water heater. Choose a cold inlet and hot outlet combination that best suits the installation. -
Page 8: Temperature Control Module
TEMPERATURE CONTROL MODULE Your Bock water heater is equipped with an electronic temperature control with many ad- vanced features. The temperature control is located in the control enclosure along with the burner ignition module. This temperature control uses two probes to measure the average water temperature in the tank. -
Page 9: Connect The Gas Line
Do not use open flame. The pipe thread compound that is used on gas piping must be of the type resistant to propane gas. Do not use teflon tape on gas piping. Note: For high alti- tude applications (above 2000 feet) contact Bock Water Heaters. WATER SYSTEM OPERATION Partially open all hot water faucets. - Page 10 GAS SYSTEM OPERATION Turn off all electrical power to the water heater. Verify that the gas main is open and gas pressure does not exceed 14" W.C. in the gas line. Gas pressures over 14" W.C. will damage the gas valve. If gas pressure is under 14" W.C. open the gas cock and bleed the gas lines until all air is purged from the line.
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Page 11: To Turn Off Gas To Appliance
TO TURN OFF GAS TO APPLIANCE 1. Set thermostat to lowest setting. 2. Turn off all electric power to appliance if service is to be performed. 3. Push in gas control knob slightly and turn clockwise to “OFF”. DO NOT FORCE. 4. -
Page 12: Maintenance
MAINTENANCE Notice to the Owner: If you are having a mechanical problem with your water heater, con- tact your service company or installer. Lime and Sediment: A program of regular maintenance should be established to keep your water heater operating at peak efficiency. Important: The tank can fail prematurely from an accumulation of lime and sediment in the bottom, excessive pressure and/or corrosion. -
Page 13: Troubleshooting
CHAMBER INSPECTION PORT The chamber inspection port is located near the bottom of your Bock water heater. If access to the combustion chamber for flame inspection or maintenance is necessary, following these steps: • Wear protective handwear. Areas around the combustion chamber may be hot after operation of the appliance. - Page 14 BURNER CONVERSION KIT The Bock ezFIT series is designed for use with natural gas or LP gas. Do not operate this water heater with a gas other than the type listed on the rating label. A burner conversion kit shall be purchased and installed in the event that a fuel change from natural to LP gas is desired.
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Page 15: Parts List
PARTS LIST Figure 10: ezFIT Parts Table 4: ezFIT Parts Part Description Draft Hood Temp. Sensor (lower) Flue Damper Inspection Port Plug Reducer Collar Inspection Port Door Hot Outlet Nipple (Top) Cold Inlet (flow diverter) Nipple (side) Flue Baffle Wire Harness (Temp. Control/Damper) Temp. - Page 16 PARTS LIST Figure 11: ezFIT Control Enclosure Parts Figure 12: ezFIT Burner Parts Table 5: ezFIT Control Enclosure and Burner Parts Part Description Power Cord Gas Valve (Natural or LP) Temperature Control Ignitor & Flame Rod Assembly Burner Ignition Module...
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Page 17: What Does This Limited Warranty Cover
LIMITED WARRANTY FOR GAS-FIRED WATER HEATER Bock Water Heaters, Inc. 110 S. Dickinson Street Madison, WI 53703 Phone: 608-257-2225 WHAT DOES THIS LIMITED WARRANTY COVER? This limited warranty applies only to the original consumer purchaser. General Defects and Malfunctions: This warranty covers defections and malfunctions in your new water heater for a period of one year from the original installation date. - Page 18 AND WHETHER ARISING IN CONTACT OR TORT. Some states do not allow the exclusion of incidental or consequential damages, so the above exclusion may not apply to you. Bock Water Heaters, Inc. • 110 South Dickinson Street • Madison, WI 53703 Telephone 608 -257-2225 • Fax 608 -257- 5304...
- Page 19 Atmospheric Gas Page 19...
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Questions and answers
I have a Bock water heater Ez75-135N I just bought on April 2, 2025 for my Motel 6 I own . The other day it stop supplying hot water . There is no spark .. I have power going to automatic ignition system but that system is not powering on nor do I have any power leaving the system . Is there anything that can be done or just buy a new one?