Viessmann Vitodens 100-W B1HA 125 User Manual

Installation and Service
Instructions
VITODENS 100-W
5784 568 - 18 04/2020
for use by heating contractor
Vitodens 100-W B1HA/B1KA
Models 26 to 125
Wall-Mounted, gas-fired condensing boilers
On demand domestic hot water with Combi boiler
Read and save these instructions
for future reference.
IMPORTANT
Please file in Service Binder
Heating input: 21 to 125 MBH
6.2 to 36.6 kW
H

Viessmann Vitodens 100-W B1HA 125 Specifications

General

Model	Vitodens 100-W B1HA 125
Category	Boiler
Type	Wall-mounted condensing boiler
Fuel Type	Natural Gas
Heat Exchanger Material	Stainless Steel
Heating Capacity	125 MBH
Efficiency	95% AFUE
Max. Input (Natural Gas)	35 kW
Max. Output (Natural Gas)	125 MBH
Warranty	10 years on heat exchanger

Summary

Installation and Service Instructions

Vitodens 100-W B1HA/B1KA Models

Details installation and service for specific Vitodens boiler models.

Safety, Installation and Warranty Requirements

Key Requirements and Precautions

Covers product documentation, warranty, contractor needs, safety, and owner advice.

Dimensions and Clearances

Minimum Service and Combustible Clearances

Details required space around the boiler and clearance to combustible materials.

Boiler Dimensions and Connections

Boiler Dimensions and Connection Legends

Provides physical size measurements and explains symbols for boiler connections.

Piping Connections Overview

Illustrates and labels all piping connections for B1HA and B1KA models.

Boiler Connections

Vent Connections

Discusses proper routing and installation of the venting system for exhaust.

Piping Practices and Gas Connection

Gas Piping Requirements and Pressure Testing

Details codes, sizing, and leak testing procedures for gas supply piping.

Condensate and Siphon Management

Covers condensate drain connection and siphon filling for proper operation.

Safety Connections

Installing Safety Devices and Low Water Cut-Off

Instructions for installing pressure relief valve and low water cut-off requirements.

Installation Examples

Waterside Flow and Boiler Flow Rate Data

Provides charts for calculating waterside flow and lists maximum boiler flow rates.

B1HA One Heating Circuit System Diagram

Illustrates a typical system setup for B1HA boilers with one heating circuit.

B1KA One Heating Circuit System Diagram

Illustrates a typical system setup for B1KA boilers with one heating circuit.

Accessories

Neutralization Unit and Low-Loss Header Information

Start-up, Inspection and Maintenance

Tools, Controls Overview, and Power Check

Setup Menu and System Filling Procedures

Overview of configurable settings and initial system filling steps.

Detailed System Filling and Bleeding Procedures

In-depth instructions for filling the heating system and removing air.

Gas Type, Conversion, and Pressure Measurement

Checking the CO2 Content/Relay Tests

Procedures for measuring flue gas CO2 and performing relay tests for diagnostics.

DHW Sensor, Unit, and Comfort Function Settings

Gas Meter Clocking, Leak Checks, and Combustion Analysis

Electrode Adjustment and Condensate Drain Check

Expansion Tank, Safety Valves, and Gas Leak Checks

Troubleshooting

Troubleshooting Steps and Room Temperature Adjustment

General approach to troubleshooting and adjusting room temperature settings.

Start-Up Cycle Operation and Potential Faults

Control Unit Faults Diagnostics Table

Lists fault codes, causes, and corrective measures for control unit errors.

Boiler Connection Checks (Troubleshooting)

Front Panel Removal and Boiler Temperature Sensor Check

Setting the Heating Curve and Set Point Adjustment

Fixed High Limit and Flue Gas Sensor Checks

Additional Information

Technical Data: Standard Heating Boiler

Burner Program Sequence of Operation

B1HA Wiring Diagram

Electrical wiring diagram illustrating connections for B1HA models.

B1KA Wiring Diagram

Electrical wiring diagram illustrating connections for B1KA models.

Maintenance Record

Measurement Entries: Static, Running Pressure, and Gas Analysis

Lighting and Operating Instructions

Safe Operation and Shut-Off Procedures

Critical safety warnings and step-by-step instructions for operating and shutting down the appliance.