Related Manuals for Bosch Greenstar FS
Summary of Contents for Bosch Greenstar FS
- Page 1 Operating instructions Residential Gas Condensing Boiler Greenstar FS/Combi FS KBR21/28-/35/42-3A | KWB28/35/42-3A...
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Page 2: Table Of Contents
5 Thermal disinfection ..........25 Greenstar FS/Combi FS – 6720810589 (2021/01) - Page 3 10 Quick reference ..........32 Greenstar FS/Combi FS – 6720810589 (2021/01)
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Page 4: Explanation Of Symbols And Safety Instructions
CAUTION indicates a hazardous situation which, if not avoided, could result in minor to moderate injury. NOTICE NOTICE is used to address practices not related to personal injury. Important Information The info symbol indicates important information where there is no risk to people or property. Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 5: Safety Instructions
▶ Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Greenstar FS/Combi FS – 6720810589 (2021/01) - Page 6 ▶ Do not touch any electrical switch, telephone, and do not use outlets. ▶ Extinguish all open flames. ▶ Do not smoke! ▶ Do not use lighters! ▶ Warn all occupants of the building, but do not ring any bell. Greenstar FS/Combi FS – 6720810589 (2021/01)
- Page 7 ▶ Never operate the appliance if the supply of combustion air is insufficient. H Danger of explosion of flammable gases ▶ Only employ a trained and certified contractor to carry out work on the gas train. Greenstar FS/Combi FS – 6720810589 (2021/01)
- Page 8 Only have the appliance installed or modified by a trained and certified heating contractor. Never modify any parts that carry flue gas. Never close the outlet of safety valves. Water may be expelled from any safety valve during heat-up. Greenstar FS/Combi FS – 6720810589 (2021/01)
- Page 9 Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the electrical supply to the pump. Instead, shut off the gas supply at a location outside of the appliance. Greenstar FS/Combi FS – 6720810589 (2021/01)
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Page 10: Information About The Appliance
The appliance may only be installed in closed loop hot water central heating systems. Any other purpose is considered improper use. Any resulting damage is excluded from the manufacturer's warranty. The commercial and industrial use of the appliance for generating process heat is not permitted. Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 11: Overview Of Boiler Types
▶ if existing, open the cold water valve and the DHW valve. ▶ When using KBR..-3A appliance with DHW tank, open a DHW tap until water run out. ▶ Open the gas cock ▶ Open the control cover. Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 12: Checking The Boiler Water Pressure
Maximum pressure of 30 psi (2.07 bar) at maximum heating water temperature must not be exceeded (safety valve will spill). Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 13: Operation
Room thermostat • Weather compensating control with room influence (room thermostat) • Third party system control unit Therefore, please read the operating instructions for the heating control unit used. Page 32 contains a quick reference. Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 14: Overview Of Controls
[4] ON/OFF switch [5] Key pad lock [6] ECO button [7] Reset button [8] Display [9] System water pressure gauge [10] DHW temperature control [11] Blank panel for optional programmer [12] Heating temperature control Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 15: Switching The Appliance On/Off
Shutdown ▶ Switch the appliance OFF using the ON/OFF switch. The display goes out. ▶ If the appliance is taken out of service for a longer period: observe frost protection ( section 4.8). Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 16: Turning The Space Heating On
– Panel or cast iron radiator heating: setting 6 (approx. 167 °F (75 °C)) – Heating with supply temperatures up to 194 °F (90 °C): setting max reset 6 720 641 933-53.1O Fig. 4 Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 17: Programming The Heating Control Unit
Observe the operating instructions for the heating control unit included in the scope of delivery. There you can read: ▶ How to set the operating mode ▶ How to adjust the room temperature ▶ How to heat economically and save energy Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 18: Kbr
DHW generation. Consult your local water department or municipality for further information. DHW thermostat * Typical DHW temperatures approx. 59 °F (15 °C) approx. 131 °F (55 °C) approx. 158 °F (70 °C) Table 4 Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 19: Kwb
KWB..-3A appliances (combi boilers): Setting the DHW temperature ▶ Set the DHW temperature on the DHW thermostat *. The set DHW temperature flashes on the display for 30 seconds. reset 6 720 641 933-55.1O Fig. 5 Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 20: Setting Manual Summer Mode
The DHW on demand signal allows maximum gas and water savings. Setting manual summer mode In summer mode or warm weather shut down (WWSD), the heating zone pump and consequently central heating are switched off. DHW generation remains active following the DHW program. Greenstar FS/Combi FS – 6720810589 (2021/01) - Page 21 ▶ Turn the boiler high limit dial counterclockwise to reset 6 720 641 933-82.1O Fig. 6 For further information, see the operating instructions for the heating control unit included in the scope of delivery. Greenstar FS/Combi FS – 6720810589 (2021/01)
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Page 22: Setting Frost Protection
All DHW pipes and DHW tank must be completely drained. Frost protection of the DHW tank: ▶ Turn the DHW thermostat e counterclockwise to min (59 °F (15 °C)). reset 6 720 641 933-69.1O Fig. 8 Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 23: Activating The Key Pad Lock
6 720 641 933-83.1O Fig. 9 Unlocking the key pad: ▶ Press the key pad lock button until the display shows only the supply temperature. Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 24: 4.10 Display Codes
Bleeding function active Excessively rapid increase in supply temperature (temp. gradient monitoring). Heating mode is disabled for two minutes. If this message appears repeatedly, inform a trained and certified heating contractor. Drying function Table 6 Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 25: Thermal Disinfection
▶ Advise occupants of the risk of scalding if no tempering valve is installed. ▶ Set the time and DHW temperature accordingly on the heating control with DHW program. ▶ Set any DHW recirculation pump to continuous operation. Greenstar FS/Combi FS – 6720810589 (2021/01) - Page 26 ▶ Reset the DHW thermostat, DHW recirculation pump, and heating control to standard operation. To cancel the thermal disinfection: ▶ Switch the appliance OFF and ON again. The appliance starts up again and the current supply temperature is displayed. Greenstar FS/Combi FS – 6720810589 (2021/01)
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Page 27: Energy Saving Tips
Radiant floor heating Do not set the supply temperature higher than the maximum level recommended by the manufacturer. Greenstar FS/Combi FS – 6720810589 (2021/01) - Page 28 (e.g. longer heating-up times or lower output). Recirculation pump If there is a DHW recirculation pump installed, use a timer program to control its operation according to the specific requirements (e.g. morning, afternoon, evening). Greenstar FS/Combi FS – 6720810589 (2021/01)
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Page 29: Troubleshooting
▶ Contact a trained and certified heating contractor for assistance, providing details of the fault code and the appliance type and serial number. An overview of the display codes can be found on page 24 Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 30: Maintenance
This ensures high efficiency and environmentally compatible combustion. Cleaning the outside of the boiler and the control unit Wipe down with a damp cloth. Do not use any abrasive or corrosive cleaning agents. Greenstar FS/Combi FS – 6720810589 (2021/01) -
Page 31: Environmental Protection And Disposal
Environmental protection and disposal Environmental protection and disposal Environmental protection and disposal Environmental protection is one of the fundamental company policies of the Bosch Group. Quality of products, efficiency and environmental protection are equally important objectives for us. Environmental protection laws and regulations are strictly adhered To protect the environment, we use the best possible technology and materials taking into account economic points of view. -
Page 32: Quick Reference
ECO-button not lit = comfort mode on the appliance. Set room thermostat ECO-button lit = economy mode to the desired temperature. Key pad lock Frost protection reset reset 6 720 641 933-68.1O 6 720 641 933-83.1O Greenstar FS/Combi FS – 6720810589 (2021/01) - Page 36 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-965-7581 www.bosch-climate.us U.S.A. Products manufactured by Bosch Thermotechnik GmbH Junkersstrasse 20-24 D-73249 Wernau www.bosch-thermotechnology.com Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.