Bosch Singular 5200 - User Manual

User Manual
Gas Condensing Combi Boilers
Singular
Singular 4000 | Singular 5200
BTC 439003302 A / 03.2021
WARNING:
If the information in these instructions are not followed exactly, a fi re or explo-
sion may result causing property damage, personal injury or death.
WARNING:
Do not store or use gasoline or other fl ammable 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 neighbor’s phone. Follow the gas
supplier’s instructions.
— If you cannot reach your gas supplier, call the fire department.
WARNING:
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury (exposure to hazardous materials)* or loss of
life. Refer to the user's information manual provided with this boiler. Installation
and service must be performed by a qualifi ed installer, service agency or the gas
supplier who must read and follow the supplied instructions before installing,
servicing, or removing this boiler. This boiler contains materials that have been
identifi ed as carcinogenic, or possibly carcinogenic, to humans.
This boiler must be installed in accordance with local, state, and federal codes.
In the absence of such requirements, then to the latest edition of the National
Fuel Gas Code, ANSI Z223.1./NFPA 54. In Canada, installation must be in
accordance with the requirements of CAN/CSA B149.1, Natural Gas and
Propane Installation Code.

Summary

Key to Symbols and Safety Instructions

Understanding Warning Symbols

Explanation of warning symbols and keywords used in the manual for risk identification.

Essential Safety Warnings

Covers critical fire, explosion, and scald hazards associated with boiler operation and installation.

Front Panel Overview

Digital Display and Icons Explained

Details the function of various icons and the digital display on the boiler's front panel.

Front Panel Control Buttons

Explanation of the buttons used to operate the boiler, adjust settings, and monitor status.

Operating the Boiler

Turning the Boiler On and Off

Procedure for powering the boiler on and off using the designated power button.

Setting Space Heating Temperature

Guide to adjusting the temperature for space heating mode via the control panel.

Setting Domestic Hot Water (DHW) Temperature

Instructions for adjusting the Domestic Hot Water temperature settings.

Viewing Basic Information and Modes

How to view general operational data and access various status modes on the boiler.

Inspection and Maintenance

Draining the Boiler Procedure

Step-by-step guide on how to drain the boiler for maintenance or freeze protection.

Maintenance Safety Precautions

Key safety warnings for electrical shock, scalding, explosion, and flue gas exposure during maintenance.

Cleaning Inlet and Air Filters

Procedures for cleaning the cold water inlet filter and the air intake filter.

Boiler Freezing Protection and Schedules

Guidelines for preventing freezing and recommended maintenance schedules for owners and technicians.

Inspecting System Components

Procedures for inspecting installation area, boiler interior, condensate trap, and flue vent system.

Troubleshooting Common Issues

Basic Problems and Solutions

Table of common operational problems, their causes, and recommended actions for resolution.

Understanding Error Codes

List of error codes, their causes, and recommended self-diagnosis or professional actions.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

This document is the User Manual for Bosch Gas Condensing Combi Boilers, specifically the Singular 4000 and Singular 5200 models. It provides comprehensive information on the boiler's operation, maintenance, and troubleshooting.

Function Description

The Bosch Singular Combi Boiler is a gas-fired condensing appliance designed to provide both space heating and domestic hot water (DHW). As a combi boiler, it integrates both functions into a single unit, eliminating the need for a separate hot water tank. The condensing technology allows for higher efficiency by recovering heat from the exhaust gases.

Important Technical Specifications

The manual highlights several important safety and operational specifications:

• Safety Standards: The boiler must be installed in accordance with local, state, and federal codes. In the absence of such requirements, it adheres to the latest edition of the National Fuel Gas Code, ANSI Z223.1./NFPA 54. For Canada, installation must comply with CAN/CSA B149.1, Natural Gas and Propane Installation Code.
• Certifications: The boiler is ETL Listed (US), ENERGY STAR certified, ASME H certified, AHRI Certified®, and NSF Certified to NSF/ANSI 372.
• Water Temperature and Scald Hazard: Water temperatures over 125°F (51°C) can cause severe burns or death from scalding. The manual provides a table detailing the time to produce serious burns at various temperatures, ranging from over 5 minutes at 120°F (48°C) to approximately 1 second at 155°F (68°C). Special caution is advised for children, the disabled, and the elderly.
• Power Supply: The boiler is designed to be powered by 120 V-1 PH-60 Hz.
• Temperature Ranges:
  • Space Heating Temperature: Adjustable from 82–180°F (Fahrenheit mode) in 2°F increments, or 27–82°C (Celsius mode) in 1°C increments.
  • DHW Temperature: Adjustable from 82–180°F (Fahrenheit mode) in 2°F increments, or 31–50°C (Celsius mode) in 1°C increments. Specific increments for Celsius mode are 1°C (31-45°C) and 46, 48, 50°C. For temperatures over 120°F, a 5-second hold on the button is required to unlock the setting.
• Pressure Unit: The boiler displays pressure in PSI.
• Fan Revolutions: The fan's revolutions per minute (RPM) can be monitored.
• Exhaust Gas Temperature: The current exhaust gas temperature is displayed in °F.
• Hot Water Temperature: The current hot water temperature is displayed in °F.
• Ambient Temperature: The current ambient temperature is displayed in °F.
• Return Temperature: The return temperature of the boiler is displayed in °F.
• PCB Version: The current PCB (Printed Circuit Board) version is displayed (e.g., 1.0).

Usage Features

The boiler features a user-friendly front panel with a digital display and intuitive buttons for operation:

• Digital Display and Icons: The digital display shows water temperature, error codes, and other operational information. Icons indicate various modes and statuses:
  • Power (A): Turns the boiler on or off.
  • Mode (B): Changes the operating mode.
  • Up (C): Increases temperature settings.
  • Down (D): Decreases temperature settings.
  • Space Heating Mode (B): Indicates space heating operation.
  • DHW Mode (C): Indicates DHW operation.
  • Pressure (D): Indicates pressure in the boiler (psi).
  • RPM (E): Indicates fan revolutions per minute.
  • Freeze Protection Mode (F): Indicates freeze protection mode operation.
  • Outdoor Reset Mode (G): Indicates ambient temperature sensor operation.
  • Combustion (H): Indicates gas burner operation.
  • Error (I): Indicates an error.
• Turning the Boiler On/Off: A dedicated power button allows for easy activation and deactivation.
• Setting Temperatures: Users can set desired space heating and DHW temperatures using the MODE button to select the function and the up/down buttons to adjust the value.
• Viewing Basic Information: The MODE button, in conjunction with the up/down buttons, allows users to cycle through various information displays, including:
  • H0 mode: Previous error.
  • H1 mode: Most recent error.
  • H2 mode: Current error.
  • H3 mode: Current pressure in the system (PSI).
  • H4 mode: Current fan revolutions (RPM).
  • H5 mode: Output voltage of the fan.
  • H6 mode: Current exhaust gas temperature (°F).
  • H7 mode: Current hot water temperature (°F).
  • H8 mode: Current ambient temperature (°F).
  • H9 mode: Return temperature of the boiler (°F).
  • HA mode: Hot water and heating modes (FF for hot water, 00 for heating).
  • HB mode: Current PCB version.
• Troubleshooting: The manual includes a detailed troubleshooting section with basic problems, possible causes, and recommended actions. It also lists error codes (A2-EF) with their causes and self-diagnosis/actions, advising users to contact a qualified installer or licensed professional for more complex issues.

Maintenance Features

Regular inspection and maintenance are crucial for the boiler's safe, long, and efficient operation. The manual outlines both owner and service technician maintenance schedules:

• Draining the Boiler: Instructions are provided for draining the boiler for maintenance or to prevent freezing during extended periods of disuse. This involves turning off the boiler, disconnecting power, turning off the gas valve, turning off the water supply valve, opening the drain valve, removing the cold water inlet filter, and reinserting it once drained.
• Cleaning the Cold Water Inlet Filter: The filter should be removed, rinsed with clean running water, and reinserted.
• Cleaning the Air Intake Filter: Recommended every 2-3 months, this involves turning off the boiler, disconnecting power, removing the front cover, removing the filter, rinsing it, drying it completely, and reinserting it.
• Protecting from Freezing:
  • The boiler has a built-in freeze protection function that operates as long as power is connected.
  • Users are advised not to unplug the power cord unless for routine maintenance.
  • If power or gas supply is disconnected for an extended period, the boiler should be drained.
  • All water pipes, including the condensate trap drain line, should be protected and insulated from freezing.
  • Annual checking of the frost protection level during scheduled maintenance.
• Owner Maintenance Schedules:
  • Daily: Check the area for combustible/flammable materials and air contaminants; visually inspect the boiler exterior.
  • Monthly: Inspect the condensate trap and PVC fittings; visually inspect piping (water and gas) for leaks; visually inspect vent piping for leakage and blockage.
  • Every 6 Months: Inspect piping (water and gas) for leaks; inspect vent piping for leakage and blockage; test the pressure relief valve.
• Service Technician Maintenance Schedules (Every Year):
  • Inspect the boiler interior.
  • Clean the condensate trap and fill with fresh water.
  • Clean the air intake filter.
  • Check for leaks (gas, water, flue, and condensate).
  • Check system pressure (gas and water).
  • Check ignition and flame rod.
  • Check wiring connections.
  • Perform combustion analysis.
• Addressing Reported Problems: Inspect and correct any problems reported by the owner.
• Inspecting Installation Area: Verify the area is free of combustible materials, flammable vapors, and contaminants in the air intake vicinity.
• Inspecting Boiler Interior: Remove the front cover, vacuum sediment, and remove obstructions.
• Cleaning Condensate Trap: Inspect the drain line, fittings, and trap; remove sediment; refill the trap.
• Checking Flue Vent System and Air Piping: Visually inspect for blockage, deterioration, or leakage; repair joints; verify air inlet pipe connection and seal; ensure vent discharge and air intake are clean and free of obstructions.

The manual strongly emphasizes that improper installation, adjustment, alteration, service, or maintenance can lead to property damage, personal injury, or loss of life, and that such tasks must be performed by a qualified installer or service agency.

Bosch Singular 5200 Specifications

General

Brand	Bosch
Model	Singular 5200
Category	Boiler
Language	English