EasyManua.ls Logo

Bock Water heaters OT500 - User Manual

Default Icon
52 pages
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 persons 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.
!
!
!
!
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.
!
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-
bors phone. Follow the gas suppliers 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
®

Questions and Answers

  • G
    Gavin SandersAug 14, 2025
    Why is my Bock Water Heater not producing enough hot water?
    • A
      afryAug 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.
  • D
    dmartinezAug 17, 2025
    What to do if the T&P relief valve is gushing hot water in my Bock Water Heater?
    • J
      Jason DrakeAug 18, 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.
  • H
    Heather WilkersonAug 25, 2025
    How to troubleshoot a Bock Water Heater when the burner won't light?
    • T
      Terri KeithAug 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.
  • J
    Jacob LongAug 28, 2025
    Why is the T&P relief valve dripping water on my Bock Water Heater?
    • H
      huntmichaelAug 28, 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.
  • K
    Kimberly StewartAug 31, 2025
    What causes rumbling noise in my Bock Water Heater tank and how to fix it?
    • K
      Kathleen RichardsonAug 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.
  • C
    Chloe RiveraSep 3, 2025
    Why is the LED status OFF on my Bock Water Heater?
    • W
      wunderwoodSep 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.
  • L
    Lisa LongSep 7, 2025
    What does error code E36 mean on my Bock Water Heater?
    • S
      Scott EllisSep 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.
  • A
    Ann GriffinSep 10, 2025
    What does error code E38 mean on my Bock Water Heater?
    • A
      Anne BernardSep 12, 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
    Derek LopezNov 20, 2025
    Why is the LED status flashing red on my Bock Water Heater?
    • G
      greenrichardNov 20, 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

Section I: Specifications

Section II: General Information

Temperature Control

How the water heater's main control manages temperature and safety functions.

Anode Rods

Explanation of the powered anode system for corrosion prevention and its maintenance.

Temperature and Pressure Relief Valve (T&P)

Requirements for installing T&P valves and safety considerations.

Condensation

Information on condensate formation, acidity, and potential neutralization.

Section III: Pre-Installation

Location Requirements

Guidelines for selecting a suitable installation location and required drain pans.

Gas Supply Line

Sizing and pressure requirements for the gas supply line to the water heater.

Combustion and Ventilation Air

Requirements for providing adequate air for combustion and ventilation.

Section IV: Installation

Vent and Combustion Air Intake

Installation of vent and intake systems, approved materials, and configurations.

Minimum and Maximum System Lengths

Equivalent pipe lengths for vent and air intake systems for 4" and 6" piping.

Condensate Elbow Assembly

Instructions for installing the condensate elbow assembly and its orientation.

Horizontal Venting, Direct Vent 2-pipe termination

Guidelines and clearances for horizontal direct vent termination.

Potable Water Connections

Detailed steps for making potable water connections, including unions and valves.

Gas Connections

Procedures and safety precautions for connecting the gas supply.

Wiring

Electrical wiring requirements, grounding, and safety precautions.

Section V: Operation

Safety Before Operating

Critical safety warnings and instructions before operating the water heater.

Operating Instructions

Step-by-step guide for starting and operating the water heater.

Adjusting the Controls

How to adjust temperature setpoints and navigate the control display.

Measuring Point-of-Use Water Temperature

Procedures for measuring and verifying water temperature at the tap.

Section VI: Maintenance

Maintenance Schedule Overview

A table outlining the required maintenance tasks and their intervals.

Check the Combustion System

Annual verification of combustion system parameters like gas pressure and exhaust readings.

Inspect Venting System and Burner

Annual inspection of vent system for damage/blockage and burner for potential issues.

Section VII: Troubleshooting

General Troubleshooting Guide

Table of common problems, their causes, and recommended actions.

Lockout Error Codes

List of error codes, their messages, and possible causes for control lockouts.

Servicing Flame Rod and Ignitor

Procedures for checking and troubleshooting the flame rod and hot surface ignitor.

Section VIII: Parts List

Water Heater Parts

Identification and listing of major water heater components with part numbers.

Control Panel Parts

Identification and listing of components on the water heater's control panel.

Section IX: Warranty

Limited Warranty Details

Overview of the limited warranty coverage, duration, and terms.

Obtaining Warranty Service

Procedures and contact information for requesting warranty service.

Warranty Exclusions

Items and conditions not covered by the limited warranty.

Bock Water heaters OT500 Specifications

General IconGeneral
BrandBock Water heaters
ModelOT500
CategoryWater Heater
LanguageEnglish

Related product manuals