EasyManua.ls Logo

Bock Water heaters OT300-A - User Manual

Bock Water heaters OT300-A
52 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
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
Install in accordance with all local codes. In the
absence of local codes, refer to NFPA 54 or ANSI
Z21.10.3.
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 37 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 tempera-
tures 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.
䊱
!
䊱
!
䊱
!
䊱
!
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
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 instal-
lation of the water heater. The manufacturer will
not be liable for damages caused by failure to
comply with the installation and operating instruc-
tions 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.
䊱
!
Warranty, Registration Card and Parts List are included.
Owner: 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.
Rev1 9/2012#23402 EN
– 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.
• 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.
WARNING: If the information in these instructions is not followed exactly, a
fire or explosion may result causing property damage, personal injury or death.
Installation and Operation Instructions Manual
Models: OT300, OT300-A, OT400, OT400-A, OT500, OT500-A
High Efficiency Commercial Gas Water Heater
®

Table of Contents

Questions and Answers

  • D
    Dana YuAug 14, 2025
    Why is my Bock Water Heater not producing enough hot water?
    • J
      Jasmine BenjaminAug 14, 2025
      If your Bock Water Heater isn't providing enough hot water, it might be due to several reasons. First, the heater might be too small for your needs, in which case, try reducing how much hot water you use. The temperature setting could also be too low; adjust it as needed. Also, check the display for any error codes and refer to the corresponding tables for guidance.
  • A
    Andrew MirandaAug 17, 2025
    What to do if the T&P relief valve is gushing hot water in my Bock Water Heater?
    • J
      John MyersAug 17, 2025
      If the T&P relief valve on your Bock Water Heater is gushing hot water, it indicates an excessive temperature condition in the tank (greater than 210°F). Lower the temperature setting on the control. Consult the manual for instructions on how to adjust the temperature.
  • D
    Deborah ChaneyAug 25, 2025
    How to troubleshoot a Bock Water Heater when the burner won't light?
    • S
      Stephanie DuffyAug 25, 2025
      If you're unable to light the burner on your Bock Water Heater, start by checking the display for any error codes and refer to the corresponding tables. Air in the gas line could be the problem, in which case you should contact a qualified agency to purge the air from the gas line. Also, a loose wire connection could be the culprit, so contact a qualified agency to inspect the wiring.
  • M
    Michael TrujilloAug 27, 2025
    Why is the T&P relief valve dripping water on my Bock Water Heater?
    • B
      Brian CarsonAug 27, 2025
      If the T&P relief valve on your Bock Water Heater is dripping water, it suggests an excessive pressure condition in the tank (greater than 150 psi). Contact a qualified agency to inspect the water piping system. Expansion tanks are required in closed systems.
  • S
    Sheila PowellAug 30, 2025
    What causes rumbling noise in my Bock Water Heater tank and how to fix it?
    • D
      Daniel HarrisAug 31, 2025
      If you hear a rumbling noise in the tank of your Bock Water Heater during burner operation, it's likely due to scale or sediment build-up in the tank. Drain the water heater to remove the scale and sediment.
  • J
    Jennifer WatkinsSep 3, 2025
    Why is the LED status OFF on my Bock Water Heater?
    • A
      angelafisherSep 3, 2025
      If the LED status is OFF on your Bock Water Heater, the water heater is not connected to the power supply. Ensure that the water heater is plugged in.
  • R
    Robert JohnsonSep 6, 2025
    What does error code E36 mean on my Bock Water Heater?
    • S
      Samantha EdwardsSep 7, 2025
      When the Bock Water Heater displays error code E36, it means that the blocked vent circuit is open. The intake or exhaust vent is blocked, so inspect and clean it. There may be faulty or loose wiring to switches, so check blue and yellow wires. Excessive wind or room draft is creating high pressures.
  • H
    hamiltongraceSep 10, 2025
    What does error code E38 mean on my Bock Water Heater?
    • S
      Sean SpenceSep 10, 2025
      When the Bock Water Heater displays error code E38, the gas supply pressure is too low. Low supply pressure or undersized piping! see manual. Gas supply is turned off. Pressure drop due to other appliances on the same supply line. Faulty or loose wiring to switch, so check black/yellow wires.
  • D
    Dr. Natasha Forbes MDNov 19, 2025
    Why is the LED status flashing red on my Bock Water Heater?
    • V
      vchangNov 19, 2025
      If the LED status on your Bock Water Heater is flashing red, it could be due to several reasons. It may indicate an error occurred during start-up. Reset the power to the anode power supply by resetting the power supply to the water heater. The tank might not be filled with water, so disconnect the water heater from the power supply and fill the tank with water. Check the insulation on all connecting harnesses for bare spots and check the connections at the power supply and anode terminals due to poor electrical connection between anode power supply and anode rod. Polarity may be reversed due to incorrect wiring, so refer to the wiring diagram and correct polarity. There may be a defective seal in anode bushing, with the anode rod no longer insulated from the tank. With an ohmmeter, check ...

Summary

Important Safety Instructions

General Safety Warnings

Gas Safety Precautions

Details on handling gas leaks and fuel type compatibility for safe operation.

Section I: Specifications

Section III: Pre-Installation

Gas Supply Line Requirements

Section IV: Installation

Vent & Combustion Air Intake

Covers installation of vent piping, air intake, and condensate management.

Horizontal Venting Terminations

Vertical Venting Terminations

Potable Water Connections

Instructions for connecting potable water supply, including expansion tanks.

Gas Connections

Details on proper gas piping, shut-off valves, and sediment traps.

Section V: Operation

Operating Instructions

Adjusting the Controls

Section VI: Maintenance

Inspecting Venting System and Burner

Section VII: Troubleshooting

General Troubleshooting Guide

Lists common problems, causes, and recommended solutions.

Lockout and Blocking Error Codes

Explains error codes displayed on the control for diagnosing issues.

Bock Water heaters OT300-A Specifications

General IconGeneral
BrandBock Water heaters
ModelOT300-A
CategoryWater Heater
LanguageEnglish

Related product manuals