Contents Important Safety Instructions …………………………… P. 1 Product Descriptions …………………………………….. P. 5 Operating Instructions …………………………………… P. 9 Maintenance ……………………………………………..P. 13 Trouble Shooting …………………………………………. P. 13 Specifications ……………………………………………... P. 16 Attention! According to the Gas Safety Ordinance of Hong Kong, any gas installation works including the installation of appliances and connection tubing, must be undertaken by registered gas installers who are registered for that appropriate classes and be employed by...
Important Safety Instructions In order to use this appliance safely, please be sure to follow the below guidelines. The following guidelines have an important bearing on safety. Symbols and their meanings are as below. If you ignore this warning sign and act mistakenly, it may incur death, or Danger serious injury and will lead to an imminent danger of fire breaking out.
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Important Safety Instructions Danger 1. Cease use and 2. Open all 3. Call Towngas turn off the gas windows to Emergency meter valve. disperse the Hotline on 2880 gas. 6999 with a phone outside Turn off the premises. water tap If you notice a gas leak Turn off gas meter valve...
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Important Safety Instructions Caution Regarding installation • Do not install the appliance at outdoor. • Minimize pipe length and avoid dead legs and stagnant corners in hot water pipework. • Minimize the distance between hot water outlet and water tap. •...
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Important Safety Instructions Caution Regarding control unit of appliance • Keep the front panel control and remote control out of reach of children. It is intended to prevent accidents or damage of appliance. Regarding operation • If appliance is not used for more than one week, drain away stagnant water inside the water pipework before use.
Product Descriptions ST12HD Kitchen Remote Control (optional) Bathroom Remote Control (optional) Front Panel Control Hot Water Cold Water Connection Connection Connection • Appliance can be connected to a maximum of 1 bathroom remote control (RC-929M) and 1 kitchen remote control (RC-929B).
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Product Descriptions Front Panel Control Temperature Display Operation Indicator High-Temperature Indicator • Use for displaying setting of • Green indicator lights up • Red indicator lights up when hot water temperature. under standby mode. hot water temperature is set • Error code will be displayed at or above 50°C.
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Product Descriptions Bathroom Remote Control (RC-929M) Temperature Display Operation Indicator High-Temperature Indicator • Use for displaying setting of • Green indicator lights up • Red indicator lights up when hot water temperature. under standby mode. hot water temperature is set •...
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Product Descriptions Kitchen Remote Control (RC-929B) Temperature Display Operation Indicator High-Temperature Indicator • Use for displaying setting of • Green indicator lights up • Red indicator lights up when hot water temperature. under standby mode. hot water temperature is set •...
First Time Usage of Appliance Check the appliance by following instructions. • Set the hot water temperature at 35°C. Fully ST12HD turn on the hot water tap and turn off after confirming the hot water is running out.
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Operating Instructions Use of Appliance 1) Starting up appliance Operation • After turning on the power supply of appliance, press the ON/OFF indicator button on front panel control or remote control. • Temperature display and priority indicator light up. Appliance is under Temperature display standby mode.
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Operating Instructions Change of Priority (for installation of multiple remote controls) • When 1 or more (maximum 2) remote controls are installed, only the front panel control or remote control with priority can adjust the hot water temperature in order to avoid accidents, such as scalding. •...
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Reminder of Adjusting Hot Water Temperature • ST12HD is capable to deliver a flow rate of 12.0L/min (at 25°C temperature rise) hot water. To suit bathing purpose of different seasons, you may adjust hot water temperature through front panel control or remote control.
Turn on and then turn off the hot water tap for several times. Wait for 10 seconds each time. If the fault still persists, please contact customer service. ST12HD Flame detection failure Please contact customer service. Flame failure device activated Please contact customer service.
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Trouble Shooting Issues of hot water supply and temperature No hot water • Check if the gas supply is normal and without suspension. supplied • Check if the water is running out from water tap normally. • Check if the cold water filter is being blocked. •...
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Trouble Shooting Issues of hot water supply and temperature Hot water • Fully turn on the main water supply valve to ensure sufficient water temperature is pressure. unstable • Increase hot water flow of mixing-type faucet to avoid the hot water flow lower than the minimum hot water flow that burner will be turned off.
Specifications Model ST12HD Sales Code ST12HD-W ST12HD-WH Appliance Type Fan Draught Room-sealed Type Installation Type Wall-mount Type Flue Type Back Flued Type Dimensions - W x H x D (mm) 360 x 587.5 x 78 360 x 670 x 78 Weight (kg) 16.0...
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