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Viessmann Vitocrossal 300 CT3 SERIES User Manual

Viessmann Vitocrossal 300 CT3 SERIES
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IMPORTANT
Product may not be exactly as shown
5285 874 - 01 03/2015
Operating Instructions and
User’s Information Manual
VITOCROSSAL 300
Vitocrossal 300
CT3 Series
Gas-fired condensing boiler
Heating input: 638 to 3361 MBH
187 to 985 kW
Do not store or use gasoline or other flammable
liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
H Do not try to light any appliances.
H Do not touch any electrical switches, do not use
any phone in your building.
H Immediately call your gas supplier from
a neighbor’s phone. Follow the gas supplier’s
instructions.
H 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
Improper installation, adjustment, and/or
operation could cause carbon monoxide poisoning
resulting in injury or loss of life.
This product must be installed and serviced
by a professional service technician who
is experienced and qualified in hot water boiler
installation and gas/oil combustion.
WARNING
If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.

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Viessmann Vitocrossal 300 CT3 SERIES Specifications

General IconGeneral
TypeCondensing boiler
EfficiencyUp to 98%
NOx Emissions< 40 mg/kWh
Connection for Domestic Hot WaterYes
Connection for Heating CircuitYes
Fuel TypeNatural Gas / Propane
Heat ExchangerStainless Steel
Control SystemVitotronic

Summary

Safety

Safety, Installation and Warranty Requirements

Key requirements for safe installation, operation, and warranty coverage.

Product documentation

Importance of reading all applicable documentation before installation.

Warranty

Information contained in documentation must be followed; failure voids warranty.

Licensed professional heating contractor

Installation, adjustment, service must be by licensed professional.

Contaminated air

Chemicals in air can cause hazardous by-products and damage equipment.

Advice to owner

Owner must be familiarized with equipment and safety precautions.

Carbon monoxide

Improper installation can lead to poisonous carbon monoxide gas.

Fresh air

Equipment requires fresh air for safe operation and adequate combustion.

Equipment venting

Never operate without a venting system to avoid CO poisoning.

About These Instructions

Important Regulatory and Safety Requirements

Operation

Ensure understanding of operation method; warranty void if instructions not followed.

Working on the equipment

Personnel must be qualified; power and gas/oil must be deactivated.

Dangerous conditions

Procedures for gas smell, flue gas smell, and immediate actions.

Combustion air and ventilation air openings

Importance of keeping fresh air intakes open for proper combustion.

Carbon monoxide

Recommends CO detectors; explains CO risks from incomplete combustion.

Frozen water pipe hazard

Warnings about protecting pipes from freezing to prevent damage.

Regular Maintenance and Service

Technical information

Lists applicable literature and installation codes for the boiler.

General Information

Product Information

Details CSA certification, pressure/temperature limits, and burner compatibility.

Fuel(s)

Specifies the types of fuel the boiler can use.

Boiler Control

Explains the Vitotronic control and microcomputer system.

Boiler Location

Specifies safe and proper locations for boiler installation, avoiding hazards.

Condensate Disposal

Information on condensate volume, pH, and disposal requirements.

Venting Connection

Discusses condensate in flue gases and the need for proper vent system design.

Operation

For Optimum Operation

Tips for maintaining the boiler and system for efficient operation.

Separate Heating System Controls

Instructions for operating additional controls installed in the boiler room.

Domestic Hot Water Production

How the boiler can be used for hot water heating with storage tanks.

Inspection and Maintenance

Starting the Heating System

Step-by-step guide on how to safely start up the heating system.

Maintenance Schedule

Monthly

Owner/operator checks for system pressure, controls, and seals.

Annually

Contractor checks safety limits, burner, water chemistry, and connections.

Periodically

Contractor performs combustion tests, checks safety switches, and burner flame.

Additional Maintenance Information

Danger of freezing

Procedures to prevent freezing if the system is not protected by antifreeze.

Long Periods of Shut-down

Recommendations for cleaning and preparing the boiler during extended shutdowns.

Water Quality

Importance of water quality for system longevity and avoiding corrosion.

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