Viessmann AWHO 351.A Installation And Service Instructions Manual

Viessmann AWHO 351.A Installation And Service Instructions Manual

Air/water heat pump with electric drive, 400 v~
Table of Contents

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VIESMANN
Installation and service instructions
for contractors
Vitocal 350-A
Type AWHI 351.A
Type AWHO 351.A
Air/water heat pump with electric drive, 400 V~
VITOCAL 350-A
Please keep safe.
5692878 GB
11/2019

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Summarization of Contents

Safety Instructions
Safety instructions explained
Explanation of safety symbols like Danger and Please note.
Regulations to be observed
List of national and statutory regulations to follow.
Safety instructions for working on the system
Guidance for safe procedures when working on the heat pump system.
Safety instructions for operating the system
Precautions for safe operation of the heat pump system.
Information
Disposal of packaging
Instructions for disposing of packaging waste according to regulations.
Symbols
Explanation of symbols used in the manual.
Intended use
Defines the intended purpose and application of the appliance.
Product information
Details regarding the product layout, hydraulics, and control unit.
System examples
Information on available system examples.
Spare parts lists
Guidance on obtaining spare parts.
Installation preparations for heat pumps installed indoors
Requirements for on-site connections: Type AWHI 351.A
Specifies on-site connection requirements for the indoor unit.
Cables/leads
Details on required cables and their routing.
Requirements for transport and siting: Type AWHI 351.A
Guidelines for transporting and siting the indoor unit.
Installation room requirements
Specifies conditions for the installation room.
Minimum clearances and dimensions for corner installation
Clearances and dimensions for corner installation.
Minimum clearances and dimensions for wall installation
Clearances and dimensions for wall installation.
Installation preparations for heat pumps installed outdoors
Requirements for on-site connections: Type AWHO 351.A
Specifies on-site connection requirements for the outdoor unit.
Requirements for transport and siting: Type AWHO 351.A
Guidelines for transporting and siting the outdoor unit.
Transport
Instructions for lifting and transporting the outdoor unit.
Installation site requirements
Conditions for the outdoor installation site.
Requirements for the heat pump control unit installation location
Location requirements for the heat pump control unit.
Minimum clearances
Specifies minimum clearance distances for the outdoor unit.
Foundations: Type AWHO 351.A
Details on foundation requirements for the outdoor unit.
Foundation dimensions
Provides dimensions for foundation construction.
Cables/leads and hydraulic lines: Type AWHO 351.A
Information on routing cables and hydraulic lines for the outdoor unit.
Installation sequence
Removing the transport brackets
Procedure for removing transport brackets to prevent noise.
Fitting the outer panels
Instructions for fitting the external panels of the unit.
Siting the heat pump
Guidance on positioning and securing the heat pump unit.
Making the hydraulic connections
Steps for connecting hydraulic lines to the unit.
Electrical connections: Control panel
Detailed steps for electrical connections to the control panel.
Electrical connections: Heat pump control unit
Steps for making electrical connections to the control unit.
Power supply
Instructions for connecting the power supply to the unit.
Commissioning, inspection, maintenance
Opening the heat pump
Procedure for safely opening the heat pump unit.
Checking the refrigerant circuit for leaks
Steps to check the refrigerant circuit for any leaks.
Filling and venting on the secondary side
Procedure for filling and venting the secondary circuit.
Checking the expansion vessel and heating circuit pressure
Test for expansion vessel and heating circuit pressure.
Cleaning the interior
Instructions for cleaning the internal components.
Checking the electrical connections for firm seating
Verifying that electrical connections are securely seated.
Checking the compressor casing temperature
Measuring the exterior temperature of the compressor casing.
Commissioning the system
Steps for system commissioning using the assistant.
Troubleshooting
Overview of sensors, drain and air vent valves
Identification of key sensors and valves for troubleshooting.
Checking the temperature sensors
Guidance on checking temperature sensor connections and positions.
Check fuses
Procedure for checking and replacing fuses.
Commissioning/service reports
Hydraulic parameter report
Table for recording hydraulic parameters and test values.
Control parameter report
List of control parameters, codes, factory settings, and commissioning values.
Specification
Heat pumps installed indoors
Technical specifications for indoor heat pump models.
Heat pumps installed outdoors
Technical specifications for outdoor heat pump models.
Sound transmission data
A-weighted sound power levels for different fan stages.
Appendix
Heat pump commissioning order
Form for ordering heat pump commissioning services.
Certificates
Declaration of conformity
Statement of compliance with European directives.

Table of Contents