TGC RJW15SD - Safety Device

13
Operating Instructions
 Flame failure safety device: Using the flame rod sensor to monitor whether the combustion
status is normal. When the flame fails, signal will be sent to the main controller to stop gas supply.
 Remaining flame protection device: If the flame still remains with the hot water temperature
inside the heat exchanger has reached the design temperature after the hot water tap has been
turned off, the device will stop the gas supply.
 Over boiling protection device: If the hot water temperature is higher than the design
temperature, the device will activate and stop the operation of appliance.
 Over heat protection device: If the heat exchanger burns out or the temperature reaches the
design temperature, the device will activate and stop the operation of appliance.
 Over pressure protection device: If the water pressure inside the appliance is over the design
pressure value, the pressure relief valve located near the hot water outlet will be opened to release
pressure. After reducing to the design pressure value, it will then be closed.
 Water flow sensing device: If the cold water flow becomes restricted or stopped, the device
will activate and stop the operation of appliance.
 Combustion fan revolution checking device: Using the revolution sensor to monitor whether
the revolution of fan is normal. When the revolution of fan deviates from the required speed, signal
will be sent to the main controller to adjust the revolution.
 RJW15SD / RJW15SN is capable to deliver a flow rate of 16L/min (at 25°C temperature rise) hot
water, while RJW20SD / RJW20SN is capable to deliver a flow rate of 20L/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.
 In winter, there may be occasional extremely cold weather where supply water temperature is
exceptionally low. Appliance will automatically reduce the hot water flow to attain the suitable water
temperature.
 In summer, there may be occasional extremely hot weather where supply water temperature is
exceptionally high or required water flow is too low, hot water temperature of appliance may be
relatively higher. You may deactivate the Eco mode and adjust water faucet or shower tap to mix with
cold water for attaining suitable water temperature.
Safety Device
Model
RJW15SD /
RJW20SD
RJW15SN /
RJW20SN
Design temperature of remaining flame protection device 97°C
Design temperature of over boiling protection device 95°C
Design temperature of over heat protection device 221°C
Design pressure of over
pressure protection device
Activate water pressure 2100kPa
Deactivate water pressure 1500kPa
Reminder of Adjusting Hot Water Temperature