Bock Water heaters ezFIT EZ 75-76PDV Installation And Operation Instruction Manual

Power direct vent gas water heater

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To the Installer:
Please attach these instructions
next to the water heater.
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
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 instal-
lation. Test water at the tap nearest to the
water heater. See page 32 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.
23417
To the Consumer:
Installation and Operation Instructions Manual
Power Direct Vent Gas Water Heater
Models: EZ 75-76PDV, EZ 100-76PDV
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.
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.
Rev5 4/21

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Summary of Contents for Bock Water heaters ezFIT EZ 75-76PDV

  • 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 Power Direct Vent Gas Water Heater Models: EZ 75-76PDV, EZ 100-76PDV Warranty, Registration Card and Parts List are included.
  • Page 2 IMPORTANT SAFETY INSTRUCTIONS WARNING If the information in these instructions 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 vapors and liquids in the vicinity of this or any other appliance.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS Section I: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Section II: General Information .
  • Page 4: Section I: Specifications

    Q.A. THE INFORMATION CONTAINED IN THIS MATERIAL D IME NSI ONS I NC HES (cm ) DRAWING IS THE SOLE PROPERTY OF COMMENTS: BOCK WATER HEATERS, INC. ANY FINISH REPRODUCTION IN PART OR AS A WHOLE xxxx SIZE DWG. NO.
  • Page 5: Section Ii: General Information

    SECTION II: GENERAL INFORMATION WHEN YOU RECEIVE YOUR NEW WATER HEATER Check the new equipment to see if all components are in good condition. If damage is observed or parts appear to be missing, contact your wholesaler. WATER TREATMENT/FILTRATION In areas where poor water conditions are suspected (i.e. lime, iron, and other minerals), it is essential that the water be tested and appropriate action taken to prevent damage to the water heater and ensure the quality of the water.
  • Page 6 SECTION II: GENERAL INFORMATION (cont .) ANODE RODS The anode rod is used as a sacrificial element within the volume of the storage tank. The purpose of the magnesium anode rod is to protect the inside of the tank against corrosion. Anode rods should be inspected twice in the first year and at least yearly once a time interval for inspection has been developed.
  • Page 7: Section Iii: Pre-Installation

    SECTION II: GENERAL INFORMATION (cont .) BACKFLOW PREVENTER (CLOSED SYSTEM) Some local municipal codes and ordinances require the use of these devices on potable (domestic) water lines. Where backflow preventers, check valves, or pressure regulating valves are required, it will be necessary to install a thermal expansion tank (designed for use with potable water) in order to prevent pressure build up in the water heater and associated piping, which could cause the T&P valve to discharge.
  • Page 8 SECTION III: PRE-INSTALLATION (cont .) CAUTION Do not drop water heater or lay heater down on its side. Move the water heater into position by sliding or using an appropriately sized hand truck. CAUTION If the water heater is installed directly on carpeting, the water heater shall be installed on a metal or wood panel extending beyond the full width and depth of the water heater by at least 3 inches (76.2 mm) in any direction or, if the water heater is installed in an alcove or closet, the entire floor shall be covered by the panel.
  • Page 9 SECTION III: PRE-INSTALLATION (cont .) UNCONFINED SPACE Unconfined space is defined by NFPA 54 as a space with a volume greater than 50 cubic feet (during typical use) per 1000 BTUH of the total combined input of all fuel burning appliances in the space.
  • Page 10: Section Iv: Installation

    SECTION IV: INSTALLATION VENT & COMBUSTION AIR INTAKE DANGER Failure to properly install the vent and combustion air intake system as outlined in this manual can result in unsafe operation of the water heater. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, never operate this water heater unless it is properly vented and has adequate air supply for combustion and dilution of flue gas.
  • Page 11 SECTION IV: INSTALLATION (cont.) VENT & COMBUSTION AIR INTAKE (cont.) NOTICE Installations in Canada must conform to the requirements of CSA B149 code. Plastic vent systems must be assembled with pipe, fittings, cements, and primers listed to ULC S636. Components of this listed system shall not be interchanged with other vent systems or unlisted pipe/fittings.
  • Page 12 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) For quick reference, Tables 6 and 7 give the maximum allowable length of straight pipe based on the total number of elbows per pipe run. Table 6: Maximum Pipe Lengths Quick Reference (Two-Pipe Terminations) Maximum Equivalent Pipe # of 90°...
  • Page 13 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) The vent and combustion air intake systems must be sufficiently supported along vertical and horizontal sections. At minimum, it is recommended that a support is placed along the vent or air intake piping every 4 feet. For horizontal systems, the first support shall be located immediately adjacent to the first 90-deg.
  • Page 14 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Table 8: Direct Vent Terminal Clearances Canadian Installations US Installations A = Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm) deck, or balcony 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW), 6 in (15 cm) for appliances ≤...
  • Page 15 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Install piping through the wall as shown in Figure 3. Adequate length of pipe must protrude beyond the exterior wall for attachment of the termination fitting. The recommended distance between the terminal fitting and the exterior wall is 1 in. (2.5 cm). Directions for cementing joints (such as the terminal fittings to the straight pipe) can be found on page 24.
  • Page 16 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Horizontal Venting, Power Vent 1-pipe termination This water heater may be vented horizontally (through a sidewall) with a one-pipe termination. In this case, the water heater will be utilizing air from inside the building for combustion air.
  • Page 17 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Table 9: Power Vent Terminal Clearances Canadian Installations US Installations A = Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm) deck, or balcony 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW), 4 feet (1.2 m) below or to side of opening;...
  • Page 18 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Install piping through the wall as shown in Figure 6. Adequate length of pipe must protrude beyond the exterior wall for attachment of the termination fitting. The recommended distance between the terminal fitting and the exterior wall is 1 in. (2.5 cm). Directions for cementing joints (such as the terminal fittings to the straight pipe) can be found on page 24.
  • Page 19 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Horizontal Venting, Direct Vent Concentric termination This water heater may be vented horizontally (through a sidewall) with a concentric vent termination kit. One hole through an exterior wall is required for the concentric vent. Both combustion air intake and vent pipes must be attached to the concentric vent termination.
  • Page 20 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Install the rain cap and small pipe assembly into the wye concentric fitting and large pipe assembly. Ensure small diameter pipe is bottomed and cemented in wye concentric fitting. Complete indoor piping runs and connect piping to the water heater.
  • Page 21 CSA B149. As a basic guide, the following minimum clearances shall be used: THE INFORMATION CONTAINED IN THIS Q.A. MATERIAL DRAWING IS THE SOLE PROPERTY OF COMMENTS: BOCK WATER HEATERS, INC. ANY FINISH REPRODUCTION IN PART OR AS A WHOLE xxxx • Minimum 12 inches (30 cm) above roof. SIZE DWG.
  • Page 22 4" pipe systems Figure 13: Vertical Power Vent Connections to Water Heater Figure 13 : Vertical Power Vent Connections to Water Heater (3" and 4" vent pipe systems) Page 22 BOCK WATER HEATERS, INC. NAME DATE DIMENSIONS ARE IN INCHES...
  • Page 23 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Vertical Venting, Direct Vent Concentric termination This water heater may be vented vertically (through a roof) with a concentric vent termination kit. One hole through the roof is required for the concentric vent. Both combustion air intake and vent pipes must be attached to the concentric vent termination.
  • Page 24 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) Note: Do not allow insulation or other materials to accumulate inside pipe assembly when installing through the roof. Install the rain cap and small pipe assembly into the wye concentric fitting and large pipe assembly. Ensure small diameter pipe is bottomed and cemented in wye concentric fitting.
  • Page 25 SECTION IV: INSTALLATION (cont .) VENT & COMBUSTION AIR INTAKE (cont.) • Over the wet primer, apply a medium coat of cement to the fitting socket and pipe joint area. • Insert pipe into fitting with a slight twisting motion. Ensure that the pipe is bottomed into the fitting.
  • Page 26 SECTION IV: INSTALLATION (cont .) WATER CONNECTIONS CAUTION This water heater incorporates fittings that contain a nonmetallic lining. DO NOT apply heat to these fittings when making sweat connections to the heater. Sweat tubing to an adapter before securing adapter to any fittings on water heaters. ALL PIPING SHOULD CONFORM TO LOCAL CODES AND ORDINANCES.
  • Page 27 Consult your local gas company or Bock Water Heaters with any questions. A manual valve, union, and a sediment trap shall be provided in front of the gas valve. All gas piping must conform to local codes and/or the National Fuel Gas Code ANSI 223.1/NFPA 54 or...
  • Page 28 Drain Valve To Floor Drain Control / Gas Valve or Neutralizer Figure 17: Recommended Water, Gas, Vent Connections Page 28 BOCK WATER HEATERS, INC. NAME DATE DIMENSIONS ARE IN INCHES TOLERANCES: 1/13/11 DRAWN 110 S. DICKINSON ST. MADISON, WI 53703 FRACTIONAL ±...
  • Page 29 SECTION IV: INSTALLATION (cont .) WIRING All electrical wiring and connections must be in accordance with local codes. In the absence of local codes, wiring must conform to the National Electric Code ANSI/NFPA No. 70 or the Canadian Electrical Code C22.1. This water heater must be electrically grounded. Electrical power should be supplied through a fused disconnect switch located near the water heater.
  • Page 30: Section V: Operation

    SECTION V: OPERATION Figure 19: Instructions To Put The Water Heater In Operation Page 30...
  • Page 31 SECTION V: OPERATION (cont .) SEQUENCE OF OPERATION Figure 20 gives a step-by-step description of the sequence of operations for this water heater. See Troubleshooting section of this manual for solutions to error codes. Figure 20: Sequence of Operation Page 31...
  • Page 32 SECTION V: OPERATION (cont .) INSPECT THE INSTALLATION AND ADJUST THE CONTROLS For natural gas, the manifold pressure is preset at 4.0” w.c. and the acceptable inlet pressure is in the range of 5-14” w.c. For propane gas, the manifold pressure is preset at 10.0” w.c. and the acceptable inlet pressure is in the range of 11-14”...
  • Page 33: Section Vi: Maintenance

    SECTION VI: MAINTENANCE NOTICE TO THE OWNER: If you are having a mechanical problem with your water heater, contact your service company or installer. WATER PIPING On an annual basis, all piping should be checked for leakage at joints, shut-off valves, and unions.
  • Page 34 SECTION VI: MAINTENANCE (cont .) INSPECT THE VENTING SYSTEM, FLUE, AND BURNER The vent and combustion air intake system should be checked at least once a year for damage and blockage. Make sure all joints are secure and that the system is properly supported. Inspect the outdoor terminals and screens to make sure they are free of obstructions.
  • Page 35: Section Vii: Troubleshooting

    SECTION VII: TROUBLESHOOTING CAUTION For your safety, the repair and servicing of this equipment shall only be performed by a qualified agency. Table 10: Troubleshooting Problem Possible causes Recommended Action 1) Contact qualified agency to purge the air from the 1) Air in the gas line.
  • Page 36 SECTION VII: TROUBLESHOOTING (cont .) Table 11: Control LED Codes Page 36...
  • Page 37: Section Viii: Parts List

    MATERIAL EZ PDV DRAWING IS THE SOLE PROPERTY OF COMMENTS: Blower Assembly Inner Door, Right Side BOCK WATER HEATERS, INC. ANY REPRODUCTION IN PART OR AS A WHOLE FINISH Flue Baffle Inner Door, Left Side (w/sight port) SIZE DWG. NO.
  • Page 38 Q.A. THE INFORMATION CONTAINED IN THIS MATERIAL EZ PDV/SKG DRAWING IS THE SOLE PROPERTY OF Table 13: ezFIT Burner Parts COMMENTS: BOCK WATER HEATERS, INC. ANY FINISH REPRODUCTION IN PART OR AS A WHOLE xxxx SIZE DWG. NO. REV. WITHOUT THE WRITTEN PERMISSION OF xxxxx BOCK WATER HEATERS, INC.
  • Page 39: Section Ix: Warranty

    SECTION IX: WARRANTY 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 40 INDIRECT, 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 www .bockwaterheaters .com...

This manual is also suitable for:

Ezfit ez 100-76pdv

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