Bosch 7736502488, 7736502490, 7736502489, 7736502487, 7736502496 User Manual

6720808879-00.1V

Room sealed gas continuous flow water heaters

OptiFlow Professional

GWH12/16/20 1 CTD E23/31 F5 L

6 720 813 939 (2016/05) AU

Operating Manual

Read installation manual prior to installation of this appliance!

Read user manual before putting this unit in operation!

Observe the warnings in the manuals!

The installation location must meet the requirements for sufficient ventilation!

Installation by an authorised person only!

2 | Index

Index

1 Key to symbols and safety instructions . . . . . . . . . . 3

	1.1	Key to symbols . . . . . . . . . . . . . . . . . . . . . . .	3
	1.2	Safety Information . . . . . . . . . . . . . . . . . . . . .	3
2	Product details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		4
	2.1	EC Declaration of Conformity . . . . . . . . . . . .	4
	2.2	Type overview . . . . . . . . . . . . . . . . . . . . . . . .	4
	2.3	Included Items . . . . . . . . . . . . . . . . . . . . . . . .	5
	2.4	Rating plate . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	2.5	Description of appliance . . . . . . . . . . . . . . . .	5
	2.6	Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	2.7	Appliance layout . . . . . . . . . . . . . . . . . . . . . .	6
3	Operation instructions . . . . . . . . . . . . . . . . . . . . . . . .		7
	3.1	Digital display - description . . . . . . . . . . . . .	7
	3.2	Before first use of the appliance . . . . . . . . . .	7
	3.3	Switching the appliance on/off . . . . . . . . . . .	7
	3.4	Temperature control . . . . . . . . . . . . . . . . . . .	7
	3.5	Programming button . . . . . . . . . . . . . . . . . . .	8
	3.6	Draining the appliance . . . . . . . . . . . . . . . . .	8
	3.7	Error codes . . . . . . . . . . . . . . . . . . . . . . . . . .	8
	3.8	Cleaning the front of the appliance . . . . . . .	8

4Maintenance

	(only by authorised service technicians) . . . . . . .	. .8
5	Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
6	Environmental considerations . . . . . . . . . . . . . . . . .	11
7	Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
8	Warranty details . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13

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Key to symbols and safety instructions | 3

1Key to symbols and safety instructions

1.1Key to symbols

Warnings

Warnings in this document are identified by a warning triangle printed against a grey background.

Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken.

The following keywords are defined and used in this document:

•NOTICE indicates a situation that could result in damage to property or equipment.

•CAUTION indicates a situation that could result in minor to medium injury.

•WARNING indicates a situation that could result in severe injury or death.

•DANGER indicates a situation that will result in severe injury or death.

Important information

This symbol indicates important information where there is no risk to people or property.

Additional symbols

Symbol Explanation

Step in an action sequence

Cross-reference to another part of the document

•List entry

–List entry (second level)

Table 1

1.2Safety Information

If you smell gas

A gas leak could potentially cause an explosion. If you smell gas, observe the following rules.

Avoid producing flames or sparks:

–Do not smoke, do not use a lighter or strike matches.

–Do not operate any electrical switches or unplug any equipment.

– Do not use the telephone or ring doorbells.

Turn off the gas supply at the main shut-off valve or at the gas meter.

Open windows and doors.

Warn your neighbours and leave the building.

Prevent anyone from entering the building.

Stay well away from the building: call the emergency services and the gas supplier.

If you notice dark combustion gases or sooting:

Isolate the gas supply to the heater.

Notify an authorised technician.

Installation, assembly, and modifications

Installation, assembly, and modifications to the heater must only be performed by an authorised technician.

Maintenance

The water heater is required to have a service and safety inspection every two years.

The installer is responsible for the safety and environmental compatibility of the installation.

The owner/user is responsible for keeping the area around the water heater free from debris.

Safe access to inspect and service the water heater is the responsibility of the property owner.

Use only genuine Bosch spare parts.

Explosive and flammable material

Do not store or use flammable material (paper, spray cans, solvents, paints, etc) near the heater.

Combustion air and surrounding air

The combustion air and surrounding air must be free from corrosive substances.

Do not spray aerosols or use chemicals around the heater unless heater is disconnected from the power supply.

Risk of damage due to user error

User errors can result in injury and damage to property.

Ensure that children never play with or operate this appliance.

Ensure that only personnel who can operate this appliance correctly have access to it.

Refer to the operating and user instructions before adjusting the water heater.

To be installed and serviced only by an authorised person

The authorised installer is responsible for:

•Correct installation and commissioning of this appliance.

•Ensuring the appliance performs to the specifications stated on the rating label.

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4 | Product details

•Demonstrating the operation of the appliance to the customer before leaving.

•Handing these instructions to customer.

THIS APPLIANCE IS NOT SUITABLE FOR POOL OR SPA POOL APPLICATIONS.

HANDING THE OPERATING INSTRUCTIONS TO THE CUSTOMER.

NOT SUITABLE FOR COMMERCIAL BOOSTING OF A WARM WATER RECIRCULATION SYSTEM

Regulations

All local by-laws and regulations pertaining to installation and use of gas appliances must be observed.

This appliance must be installed in accordance with the manufacturers installation instructions, AS/NZS5601, AS/ NZS3500, and all Local Building & Gas fitting regulations.

The appliance must not be installed outdoors. The appliance is approved for indoor installation only. Do not install this appliance with any modification or alteration.

Failure to install this appliance in accordance with these installation instructions will void the warranty and may create an unsafe situation.

Safety of electrical appliances for domestic use and similar

purposes

The following requirements apply in accordance with EN 60335-1 in order to prevent hazards from occurring when using electrical appliances:

“This appliance can be used by children of 8 years and older, as well as by people with reduced physical, sensory or mental capabilities or lacking in experience and knowledge, if they are supervised and have been given instruction in the safe use of the appliance and understand the resulting dangers. Children must not play with the appliance. Cleaning and user maintenance must not be performed by children without supervision.”

“If the power cable is damaged, it must be replaced by the manufacturer, its customer service department or a similarly qualified person, so that risks are avoided.”

2Product details

2.1EC Declaration of Conformity

The appliance has been tested and certified to Australian Standards.

Model	...GWH12/16/20 1 CTD E23/31 F5 L

Table 2

2.2Type overview

GWH	12	1	CT	D	E	23	F5	L
GWH	12	1	CT	D	E	31	F5	L
GWH	16	1	CT	D	E	23	F5	L
GWH	16	1	CT	D	E	31	F5	L
GWH	20	1	CT	D	E	23	F5	L
GWH	20	1	CT	D	E	31	F5	L

Table 3

[GWH]Gas continuous flow water heater [12] Capacity (l/min)

[1] Generation [CT] Thermostatic

[D]Digital user interface

[E]Electric ignition

[23]	Appliance set for natural gas
[31]	Appliance set for Universal LP gas
[F5]	Tight chamber

[L]Locked water temperature adjustment

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Product details | 5

2.3Included Items

•Gas continuous flow water heater

•Fixing bracket

•Appliance documentation

2.4Rating plate

The rating plate is located on the outside of the appliance, on the bottom.

The rating plate specifies the performance of the appliance, approval and serial numbers.

2.5Description of appliance

•Room sealed wall-mounted appliance for internal installation.

•Multifunctional display panel

•Suitable for Natural Gas or Universal LPG

•Electronic ignition

•Water flow sensor

•Water valve

•Temperature sensors for monitoring the temperature of the incoming and outgoing water of the appliance.

•Safety devices:

–Flame sensor rod

–Thermal fuse

–Hot water temperature sensor

–Electronic control unit

–Air temperature sensor

•Electrical connection: 230 V, 50 Hz

•Frost protection device.

2.6 Accessory

•Flue accessories

•Remote control (optional).

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6 720 813 939 (2016/05)