CH 120 - Thermostat BOSCH - Free user manual and instructions

USER MANUAL CH 120 BOSCH

14:50 20° OK

CE

< 14:50 20° Ok ① ② ③ 0010045748-001

1

PPDF Download PPDF www.docs.bosch-thermotechnology.com/7738112982 0010053090-002

2

600 ≥ 1000 500 ≥ 1200 750

Diagram showing a device with a circular indicator and a large 'X' symbol, possibly indicating cancellation or error.

Weather and heating icons with X marks, including sun, cloud, thermometer, heater, and monitor

0010038006-001

Ø 6 mm Ø 6 mm Ø 3,5 mm Ø 3,5 mm Ø60 2 0010038008-001

4

8613560436.0010 X >FC≠AB3< 2 <100 m: 0,5 mm² 100 - 300 m: 1,5 mm² BUS 2 1 0010045871-001

5

graph TD
    A["1. PDF"] --> B["2. Disposal"]
    B --> C["3D Printer"]
    C --> D["BOSCH"]
    D --> E["4D Disposal"]

6

	CH 120
P_max	0,6 W
IP-class 20
Pollution degree(EN 60664)	2
T_press (EN 60695-10-2)	90 °C
T_amb	0 - 50 °C
ErP (EU 811/2013; (EU)2017/1369)	Class V / 3 %, Class II /2 %, Class VI /4 %
Wi-Fi –
BUS EMS2,EMS1
m 200 g
	h = 95 mm, w = 116 mm, d = 21 mm

1

Commissioning Language English Change Confirm: OK ^ aaa ⋮ ✓ zzz Ok

HMI 300 - 700 Heatronic UI 800

Language

Date (YYYY-MM-DD)

Date (YYYY-MM-DD)

Date (YYYY-MM-DD)

< Time (HH:MM)

0010053092-001

7

graph TD
    A["Pump connection"] --> B["Appliance"]
    A --> C["Module"]
    D["Type of HC pump"] --> E["Switched"]
    D --> F["Permanent"]
    G["Pump error type"] --> H["Not used\nNormally closed\nNormally open"]

graph TD
    A["Mixed HC"] --> B["Yes"]
    A --> C["No"]
    D["Mixer run time"] --> E["60C"]
    D --> F["10"]
    G["Heating system"] --> H["Radiator Underfloor"]
    G --> I["Convector"]

graph TD
    A["Max. flow temperature"] --> B["^90"]
    A --> C["..."]
    A --> D["✓30"]
    E["Heat control type"] --> F["Weather compensated > Design flow temperature"]
    E --> G["✓ Room temp.dependent"]

^Outdoor : ✓Room and outdoor> < Frost prot. limit temp. > ^10 ℃ : ✓-20 ℃

>

graph TD
    A["Solar module installed"] --> B{Yes}
    A --> C{No}
    B --> D["Solar system detected ..."]

< Confirm configuration Commissioning compl. >

Overview Tuesday, 10.08.21 14:50 20.5°

0010053093-002

Two icons: a droplet with flame and plug connected to a leaf symbol, representing energy or environmental protection (no text present)

Commissioning Language English Change: Confirm: OK ^ aaa ⋮ ✓ zzz Ok

UI 300 - UI 700 UI 800 EMS1, EMS2

Language

Date (YYYY-MM-DD)

Date (YYYY-MM-DD)

Date (YYYY-MM-DD)

< Time (HH:MM)

0010055695-001

9

graph TD
    A["Country of installation"] --> B["Netherlands"]
    A --> C["United Kingdom"]
    D["Installed boiler type"] --> E["Gas boiler"]
    D --> F["Oil boiler"]
    G["3rd party thermostat"] --> H["Not installed"]
    G --> I["Installed"]
    J["Heating system"] --> K["Radiator"]
    J --> L["Underfloor"]
    J --> M["Convector"]
    N["Please clean sytem filter ..."] --> O["Confirm all configurations and activate hybrid system?"]
    P["Commissioning compl."] --> Q["Hybrid system"]
    Q --> R["No active appliances"]

1 [en] General safety instructions

Notices for the target group

These instructions are intended for experts who are skilled in dealing with water installations, heating and electrical engineering as well as the operator of the heating system and ventilation unit.

▶ Comply with all instructions of the system components.
▶ Observe the safety instructions and warnings.
▶ Follow national and regional regulations, technical regulations and guidelines.

Failure to comply with instructions may result in material damage and personal injury, including danger to life.

Intended use

▶ Use the product only to control the heating and ventilation units.

All other use is considered unsuitable. We accept no liability for damage caused through incorrect use.

⚠️ Risk of scalding at the DHW draw-off points

If DHW temperatures above 60 °C are set or if thermal disinfection is activated, a mixer must be installed. If in doubt, ask your installer.

2 Product description

CH 120 is a user interface for controlling heating systems with conventional heat generators (gas or oil boilers) or with a hybrid system. For hybrid systems, the following components must be present:

• Heat pump
• Boiler
  • Hybrid manager HM 210
  • Wired control BUS system EMS 1/EMS 2

Heat pump, boiler, hybrid manager HM 210 and CH 120 must be connected via EMS 1/EMS 2.

Maximum one heating circuit can be controlled using a CH 120.

In a hybrid system, CH 120 is not compatible with heat generators with UI 800 or CR 400/CW 400/CW 800.

In a system without hybrid manager HM 210, CH 120 can be used together with heat generators UI 800 and CR 400/CW 400/CW 800.

The detailed installation and operating instructions can be downloaded from the Bosch website.

▶ Scan the QR code in Fig. 2 on page 2.

If a third-party room thermostat is connected to the heat generator, it must be rewired and connected to the hybrid manager HM 210. The settings made on the CH 120 are not adopted by the third-party thermostat and vice versa.

During commissioning (or after a successful installation in the service menu), you can specify that a third-party thermostat is installed. Several standard settings are then made in the CH 120 and some menus are hidden on the HM 210, as these do not function optimally in conjunction with a third-party thermostat.

ImpoGBB

Bosch Thermotechnology Ltd.

Cotswold Way, Warndon

Worcester WR4 9SW / UK

4 Regulations

In order to ensure installation and operation of the product in accordance with the regulations, please observe all the applicable national and regional regulations as well as all technical rules and guidelines.

You can find a list of the most relevant British and European directives and regulations in the table below.

EU legislation UK legislation
Electromagnetic Compatibility - Directive 2014/30/EU	Electromagnetic Compatibility Regulations 2016
Low Voltage Directive 2014/35 Electrical Equipment (Safety) Regulations 2016
Radio Equipment - Directive 2014/53/EU	Radio Equipment Regulations 2017
Pressure Equipment - Directive 2014/68/EU	Pressure Equipment (Safety) Regulations 2016
Gas Appliances - Regulation (EU) 2016/426	Regulation 2016/426 on gas appliances as brought into UK law and amended
Machinery Directive 2006/42/EC Supply of Machinery (Safety) Regulations 2008
Ecodesign Directive 2009/125/EC The Ecodesign for Energy-Related Products Regulations 2010
Energy Labelling Regulation (EU) 2017/1369	Energy Labelling Regulation (EU) 2017/1369 (as retained in UK law and amended)
Restriction of the Use of certain Hazardous Substances in Eletrical and Electronic Equipment (RoHS) - Directive 2002/95/EC	The Restriction of the Use of Certain Hazardous Substances in Eletrical and Electronic Equipment Regulations 2012
European Directive 2012/19/EC on old electronic and electrical appliances	(UK) Waste Electrical and Electronic Equipment Regulations 2013 (as amended)

Table 2

envice

5

To open the service menu:

▶ Press the key for 5 seconds.
A countdown starts after 2 seconds. The display shows the service menu after 5 seconds.
▶ Use the ∨ and ∧ keys to navigate to the desired menu and select this with OK.

Menus may not be displayed depending on the system configuration.

5.1 System configuration

5.1.1 Domestic hot water

Displays whether a DHW heating is installed.

5.1.2 Solar module installed

A solar module can be integrated or removed.

5.1.3 Start hybrid system commissioning?

In the event that a hybrid module is installed after the CH 120 has already been installed with a conventional heat generator (gas or oil boiler).

5.1.4 3rd party thermostat

If a third-party thermostat is installed, some menu items are hidden and certain default settings are applied.

5.1.5 Activate m^3 for energy monitor

Enables the activation of the m^3 unit for gas consumption in the Energy monitoring menu. The conversion from kWh to m^3 is optimised for the country of installation Netherlands and takes into account the specific net calorific values for the Netherlands, 35.17 MJ.

5.1.6 Installed boiler type

Setting whether a gas or oil boiler is connected to CH 120 and hybrid manager HM 210.

5.2 Heating

NOTICE

Danger of damaging or destroying the screed!

Excessive temperatures in underfloor heating systems can destroy the screed.

▶ If an underfloor heating system is installed, observe the maximum flow temperature recommended by the manufacturer.

Menu items: Pump connection | Mixed HC | Mixer runtime | Type of HC pump | Pump error type | Heating system | Heat control type | Heat control type | Heat curve adaption | Max. flow temperature | Heat control type | Min. outdoor temperature | Design flow temperature | Control Characteristic | Pump economy mode | Room influence | Solar influence | Building / damping | Frost protection | Frost prot. limit temp. | Constant heat below | DHW priority

5.2.1 Threshold temperature for frost (frost protection limit temperature)

NOTICE

Risk of destroying hot water-conducting system components if the threshold temperature for frost is set too low and room temperatures are below 0 °C!

▶ Only specialists are permitted to adjust the factory setting of the threshold temperature for frost (5 °C).
▶ Do not set the threshold temperature too low. Damage caused by a threshold temperature set too low is not covered by the warranty!
▶ System frost protection is not possible without outdoor temperature sensor.

i

The Room setting does not offer absolute frost protection, because pipework installed in façades, for instance, can freeze. If an outside temperature sensor is installed, frost protection can be guaranteed for the entire heating system regardless of the control type set:

In the Frost protection menu, set either Outdoor or Room and outdoor

5.3 Hybrid menu

Menu items: Bivalent temperature | Compressor quick start | Manual defrosting | TC3-TH2 temp. diff. heat. | Min. modulation boiler pump | Low-noise operation | Hybrid strategy | Energy prices

5.4 Hot water

WARNING

Risk of scalding from hot water!

If thermal disinfection to prevent legionella is enabled or the maximum cylinder temperature (DHW temp. max. or cylinder max.) is set to over 60 °C:

▶ Inform all people concerned and make sure that a mixing device is installed.

In a hybrid system, DHW is only provided by the conventional heat generator (gas/oil boiler).

When the thermal disinfection function is activated, the DHW cylinder is heated to the temperature.

▶ Observe operating conditions for the DHW circulation pump, including the water quality and instructions for the heat source stated in DVGW – Worksheet W 511.

Menu items: Circulation | Thermal disinfection

5.5 Solar

Menu items: Max. cylinder temp. | Type of collector | Gross collector area | Climate zone | Min hot water temp. | Modulating pump | Vario-Match-Flow | Tube function | Switch-on diff. solar pump | Switch-off diff. solar pump | Max. collector temp. | Therm.dis./daily heat-up (K) | Therm.dis./daily heat-up (K) | Start solar thermal system | Solar yield reset | Reset Solar module

5.6 Function check

With the help of this menu, pumps and mixer in this system can be tested.

Menu items: Function test

5.6.1 Heating circuit

Menu items: PC1 heat. circuit pump | Mixer

5.6.2 Solar

Menu items: Solar pump | PS6 therm. disinfect. pump

5.6.3 Hybrid system

Menu items: Air purge mode | Air purge mode | Expansion valve | Refrigerant circuit | Inverter cooling fan | Drain pan heater | Hybrid pump set point | PHO flow rate | Compressor speed | Compressor set point | VRO receiver valve | VR1 expansion valve | 4-way valve | Drain pan heater

5.7 Information

Menu items: Heat source (conventional) | Hybrid system | Heating circuit | Domestic hot water | System components

5.8 Operation status - faults

Menu items: Current system status | Fault history | Reset fault history | Reset alarms

5.9 Service

Menu items: Service reminder | Reminder date | Reset

5.10 Factory reset

Menu items: Factory reset

en The following text is in English for legal reasons.

Open Source Licensing

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This document contains a list of open source software (OSS) components used within the product under the terms of the respective licenses. The source code corresponding to the open source components is also provided along with the product wherever mandated by the respective OSS license.

Name of OSS Component	Name and Version of License (License text → Chapter)	More Information
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Provided that within certain OSS-Licenses (e.g. LGPL-2.0) necessary, reverse-engineering is allowed for the respective software component to the required extent. This shall not apply for other components of the software.

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