Viessmann VITOCROSSAL 300 CU3A 35 Operating Instructions Manual
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Viessmann VITOCROSSAL 300 CU3A 35 Operating Instructions Manual

Floor mounted, gas-fired condensing boiler with matrix gas burner and lambda pro control, for operation with natural gas and liquid propane gas, heating input 19 to 199 mbh, 5.6 to 58 kw, with vitotronic 200 kw6b controls
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Operating Instructions
Vitocrossal 300 CU3A
Models 26, 35, 45, 57, 94, 125, 160, 199
Floor mounted, gas-fired condensing boiler with MatriX gas burner and Lambda Pro control
For operation with natural gas and liquid propane gas
Heating input
19 to 199 MBH
5.6 to 58 kW
VITOCROSSAL 300
With Vitotronic 200 KW6B Controls
5673 650 - 03
01/2019
H
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.
Do not store or use gasoline or other
fl ammable liquids in the vicinity of this
or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliances.
Do not touch any electrical switches,
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 fi re department.
Installation and service must be
performed by a qualifi ed 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 combustion.
Product may not be exactly as shown
IMPORTANT
Read and save these instructions
for future reference.
Please file in Service Binder

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Summary of Contents for Viessmann VITOCROSSAL 300 CU3A 35

  • Page 1 Operating Instructions Vitocrossal 300 CU3A Models 26, 35, 45, 57, 94, 125, 160, 199 Floor mounted, gas-fired condensing boiler with MatriX gas burner and Lambda Pro control For operation with natural gas and liquid propane gas Heating input 19 to 199 MBH 5.6 to 58 kW VITOCROSSAL 300 With Vitotronic 200 KW6B Controls...

  • Page 2: Safety

    Follow the manufacturing facilities. Viessmann maintenance schedule of the boiler contained in this manual. Contaminated combustion air will damage the boiler and may lead to substantial property damage, severe Operating and Service Documentation personal injury and/or loss of life.

  • Page 3: Table Of Contents

    Table of Contents Vitocrossal 300 CU3A 26 to 199 Operating Page Safety Safety, Installation and Warranty Requirements....2 About these Instructions..........6 For your Safety ............6 Operation .............6 Working on the equipment ........6 Maintenance and cleaning ........6 Flue gas smell ............6 Dangerous conditions ..........6 Technical information ..........6 Carbon monoxide ...........7 For safe operation ..........7...
  • Page 4 Table of Contents Vitocrossal 300 CU3A 26 to 199 Operating Page Start-up/Shutdown Starting the Heating System ........20 Shutting Down the Heating System ......20 With frost protection monitoring ......20 For the primary heating circuit .......20 For all heating circuits ..........20 Pump exercise function ........20 Ending the heating program “Standby mode”...
  • Page 5 Table of Contents Vitocrossal 300 CU3A 26 to 199 Operating Page Additional Adjustments Setting the Display Contrast ........29 Setting the Display Brightness........29 Entering Names for the Heating Circuits ......29 Setting the Primary Heating Circuit for the Standard Menu ............30 Setting the Time and Date .........30 Language Selection ..........30 Setting the Temperature Unit ºF ºC ......31 Restoring Factory Settings .........31...

  • Page 6: About These Instructions

    Regular inspection and service by a qualified heating - Accessory manuals contractor is important to the performance of the Viessmann Vitocrossal 300 CU3A. Neglected maintenance impacts on warranty; regular inspection ensures clean, environmentally friendly and efficient operation. We recommend a maintenance...

  • Page 7: Carbon Monoxide

    Flue products contain poisonous carbon Note: Viessmann does not test any detectors and makes monoxide gas which can cause nausea or asphyxiation no representation regarding any brand or type of resulting in severe personal injury or loss of life.

  • Page 8: Frozen Water Pipe Hazard

    Safety Vitocrossal 300 CU3A 26 to 199 Operating For your Safety (continued) Frozen water pipe hazard Installation area conditions Your heating boiler is designed to provide a warm and WARNING comfortable living environment. It is not designed to ensure against freezing of water pipes. Incorrect ambient conditions can lead to damage to The boiler is equipped with several safety devices that the heating system and put safe operation at risk.

  • Page 9: General Information

    General Information Vitocrossal 300 CU3A 26 to 199 Operating Commissioning The commissioning and matching of the control unit to local conditions and building characteristics, as well as instructing the user in the operation of the system, must be carried out by your heating contractor. Terminology To provide you with a better understanding of the functions of your Vitotronic control unit some terminology...

  • Page 10: Energy Savings Tips

    General Information Vitocrossal 300 CU3A 26 to 199 Operating Energy Saving Tips Central heating Standard room temperature (“Room temp setpoint”, refer to page 21): Never overheat your home. Every degree of room temperature reduction saves up to 6% on your heating bills.

  • Page 11: Tips For More Comfort

    General Information/Controls Vitocrossal 300 CU3A 26 to 199 Operating Tips for More Comfort Central heating DHW heating Standard room temperature (“Room temp setpoint”, Time program (refer to pages 18 and 27): refer to page 21): Use the time program for DHW heating. You can select your desired temperature at any time Use the time program for the DHW recirculation pump.

  • Page 12: Overview Of Controls

    Controls Vitocrossal 300 CU3A 26 to 199 Operating Overview of Controls Modular structure The control unit is integrated into the boiler. The control unit comprises a standard unit, electronics modules and a programming unit. Standard unit: ON/OFF switch ■ Optolink laptop interface ■...

  • Page 13: Programming Unit

    Operation Vitocrossal 300 CU3A 26 to 199 Operating Programming Unit You can change any settings on your heating system centrally at the programming unit of the boiler control unit. If remote control units are installed in your rooms, you can also adjust the settings at the remote control units. Refer to the remote control operating instructions Two control levels are available:...

  • Page 14: Standard Menu

    Operation Vitocrossal 300 CU3A 26 to 199 Operating Standard Menu Legend A Header (shows the operating program for displayed heating circuit D) B Current outside temperature C Set room temperature D Heating circuit which is selected for operation in the standard menu (primary heating circuit) The following settings for the primary heating circuit D can be called up and adjusted in the standard...

  • Page 15: How To Use The Controls

    Operation Vitocrossal 300 CU3A 26 to 199 Operating How to Use the Controls The screen saver will become active if you have not adjusted any settings on the programming unit for a few minutes. The display brightness is reduced. 1. Press .

  • Page 16: Zone Circuit Steps

    Operation Vitocrossal 300 CU3A 26 to 199 Operating Zone Circuit Steps...

  • Page 17: Operating Program

    Operation Vitocrossal 300 CU3A 26 to 199 Operating Operating Program Operating programs for central heating, DHW, frost protection Symbol Operating program Function Central heating and DHW heating “Heating and DHW” H The rooms of the selected heating circuit are heated in accordance with the room temperature and time program specified (see section “Central heating”).

  • Page 18: Time Program

    Operation Vitocrossal 300 CU3A 26 to 199 Operating Time Program The following explains how to input the settings for a Example of time phases within the time program for time program. The special features of each individual central heating time program are assigned to the relevant chapters. Setting a time program for the following functions: H Central heating (refer to page 21) H DHW heating (refer to page 26)

  • Page 19: Setting The Time Program Efficiently

    Operation Vitocrossal 300 CU3A 26 to 199 Operating Time Program (continued) Setting the time program efficiently If you would like to set a different time program for just one day of the week, proceed as follows: Example: You want to set a different time program for Monday: 1.
  • Page 20 Start-up/Shutdown Vitocrossal 300 CU3A 26 to 199 Operating Starting the Heating System Vitotronic 200, type KW6B Ask your heating contractor about the following: H Boiler type and relevant control unit type H Required system pressure H Location of the pressure gauge, shut-off valve, gas shut-off valve, ventilation apertures 1.
  • Page 21 Central Heating - Heating Circuit (HC) Vitocrossal 300 CU3A 26 to 199 Operating Room Temperature Further information can be found in “Terminology” page 42. Setting the reduced room temperature for central heating Setting the standard room temperature for central heating (night setback) Factory setting: 68°F (20°C) Factory setting: 64°F (18°C)
  • Page 22 Central Heating - Heating Circuit (HC) Vitocrossal 300 CU3A 26 to 199 Operating Heating Curve Your system’s heating characteristics are affected by the slope and the shift of the selected heating curve. Further information about the heating curve can be found under “Terminology”...
  • Page 23 Central Heating - Heating Circuit (HC) Vitocrossal 300 CU3A 26 to 199 Operating Comfort Function “Party Mode” Selecting the comfort function “Party mode” With this function, you can change the room temperature for several hours, e.g. if guests unexpectedly stay longer in the evening.
  • Page 24 Central Heating - Heating Circuit (HC) Vitocrossal 300 CU3A 26 to 199 Operating Energy Saving Function “Holiday Program” Selecting the energy saving function “Holiday program” To save energy, for example over long holidays, you can activate the “Holiday program”. Setting the “Holiday program” for central heating Note: The holiday program affects all heating circuits.
  • Page 25 Central Heating - Zone Circuits (ZC) Vitocrossal 300 CU3A 26 to 199 Operating Room Temperature Further information can be found in “Terminology” page 42. Factory setting: 165°F (74°C) For all fixed setpoint zone circuits Extended menu 2. “Zone Circuits” 3. Poss. for the required zone circuit.
  • Page 26 DHW Heating Vitocrossal 300 CU3A 26 to 199 Operating Setting the DHW Temperature Factory setting 122°F (50ºC) Extended menu: 2. “DHW” 3. “DHW temperature setpoint” Using set the required value Ok to confirm Operating Program Further information can be found in “Terminology” page 42. Setting the operating program for DHW heating For the primary heating circuit (refer to page 30) Standard menu...
  • Page 27 DHW Heating Vitocrossal 300 CU3A 26 to 199 Operating Time Program Further information can be found in “Terminology” page 42. Setting the time program for DHW heating Factory setting: One time phase from 00:00 to 24:00 h for every day of the week. Extended menu: 2.
  • Page 28 DHW Heating Vitocrossal 300 CU3A 26 to 199 Operating Switching Off DHW Heating You do not want to heat DHW or provide central You do not want to heat DHW, but do want to provide heating central heating For the primary heating circuit (refer to page 30) Standard menu for the operating program “Standby mode”...

  • Page 29: Additional Adjustments

    Additional Adjustments Vitocrossal 300 CU3A 26 to 199 Operating Setting the Display Contrast Extended menu 2. “Settings” 3. “Contrast” 4. Set the required contrast. Setting the Display Brightness If you would like the texts in the menu to be more Extended menu clearly legible, change the brightness for “Control”.

  • Page 30: Setting The Primary Heating Circuit For The Standard Menu

    Additional Adjustments Vitocrossal 300 CU3A 26 to 199 Operating Setting the Primary Heating Circuit for the Standard Menu If your heating system has several heating circuits, you can select the heating circuit to be displayed in the standard menu. Extended menu 2.

  • Page 31: Setting The Temperature Unit ºf ºc

    Additional Adjustments Vitocrossal 300 CU3A 26 to 199 Operating Setting the Temperature Unit °F (°C) Factory setting: °C Extended menu: 2. “Settings” 3. “Temperature unit” 4. Select the temperature unit “°C” or “°F”. Restoring Factory Settings You can reset the factory settings of all modified values for each heating circuit separately.

  • Page 32: Scanning

    Scanning Vitocrossal 300 CU3A 26 to 199 Operating Scanning Information Subject to the connected components and settings made, you can scan current temperatures and operating conditions. The extended menu splits the information into groups: H “General” H “Heating circuit 1” H “Heating circuit 2”...

  • Page 33: Scanning The Service Messages

    Scanning Vitocrossal 300 CU3A 26 to 199 Operating Scanning the Service Messages If your heating system is due for a service, the symbol flashes in the display, and “Service” appears. 1. You can call up the reason for the service with 2.

  • Page 34: Scanning Fault Messages

    Scanning Vitocrossal 300 CU3A 26 to 199 Operating Scanning Fault Messages If any faults have occurred in your heating system, the   symbol flashes in the display, and “Fault” appears. The red fault indicator also flashes (see chapter “Starting the heating system”).

  • Page 35: Emissions Test Mode

    Emissions Vitocrossal 300 CU3A 26 to 199 Operating Emissions Test Mode Emissions test mode should only be activated by a certified technician during the annual inspection. Extended menu: 2. “Test mode” 3. “Flue gas test °C ON” The following functions are activated: H The burner is switched on (the display shows symbol Note: Burner start-up can be delayed, e.g.

  • Page 36: Troubleshooting

    Troubleshooting Vitocrossal 300 CU3A 26 to 199 Operating Rooms are too Cold Cause Remedy The heating system is off. - Switch the ON/OFF switch ON (refer to diagrams on page 20). - Switch ON the mains isolator, (if installed outside the boiler room).

  • Page 37: Rooms Are Too Hot

    Troubleshooting Vitocrossal 300 CU3A 26 to 199 Operating Rooms are too Hot Cause Remedy H Control unit incorrectly adjusted. Check settings and correct if required: - Operating program (refer to page 21) H Remote control (if installed) set incorrectly. - Room temperature (refer to page 21) - Time (refer to page 30) See separate operating instructions - Time program central heating (refer to page 21)

  • Page 38: Flashes And "Fault" Is Displayed

    Troubleshooting Vitocrossal 300 CU3A 26 to 199 Operating “ ” Flashes and “Fault” is Displayed  Cause Remedy Heating system fault. Proceed as described (refer to page 34). Flashes and “Service” is Displayed “ ” Cause Remedy The time for a service, as specified by your heating Proceed as described on page 33.

  • Page 39: Maintenance

    Maintenance Vitocrossal 300 CU3A 26 to 199 Operating Inspection/Cleaning/Maintenance Cleaning All equipment can be cleaned with a commercially available domestic cleaning agent (non-scouring). Clean the surface of the programming unit with the microfibre cloth provided. Inspection and maintenance Regular maintenance ensures trouble free, energy efficient, environmentally responsible and safe heating.

  • Page 40: Additional Information

    Additional Information Vitocrossal 300 CU3A 26 to 199 Operating Overview of Extended Menu Heating Zone circuits Zone circuit 1 Zone circuit 2 Solar energy Zone circuit 3 Test mode DHW temp setpoint DHW time program Information DHW circ time prog Settings General Heating circuit 1 HC1...

  • Page 41: Calling Up Options Under "Information

    Additional Information Vitocrossal 300 CU3A 26 to 199 Operating Calling up Options Under “Information” Scanning options in the extended menu Heating circuit 2, 3 (HC2, HC3) Note: Subject to the actual heating system equipment “Operating program” level, not all of the scans listed here may be H “External hook-up”...

  • Page 42: Terminology

    Additional Information Vitocrossal 300 CU3A 26 to 199 Operating Terminology Heating mode Operating program The operating program determines whether you heat Standard heating mode your rooms and DHW, or only heat DHW, or whether For periods when you will be at home during the day, you switch off central heating (with frost protection use the standard room temperature to heat your monitoring).

  • Page 43: Heating Curve

    Additional Information Vitocrossal 300 CU3A 26 to 199 Operating Terminology (continued) Slope Heating curve Heating curves illustrate the relationship between the outside temperature, room temperature (set value) and boiler water or (heating circuit) supply temperature. The lower the outside temperature, the higher the boiler water temperature or heating circuit supply temperature.

  • Page 44: Heating Circuit

    Additional Information Vitocrossal 300 CU3A 26 to 57 Operating Terminology (continued) Heating circuit Solar circuit pump A heating circuit is a sealed circuit between the boiler In conjunction with solar thermal systems. and radiators, in which the heating water circulates. The solar circuit pump transports the heated heat A heating system may comprise several heating circuits.

This manual is also suitable for:

Vitocrossal 300 cu3aVitocrossal 300 cu3a 26Vitocrossal 300Vitocrossal 300 cu3a 45Vitocrossal 300 cu3a 57Vitocrossal 300 cu3a 94 ... Show all

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