5

2.3 Control panel (main controller)

● Standard mode: the default mode when first power on is the standard mode, if the water pressure is
high enough, it’ll achieve the set temperature by gas modulation, if the highest heat-input failed to gain 
that temperature, the water flow will then be reduced.

6

III. Pre-operation preparations

Please refer to the following steps during initial use.

Warning

•Please don’t spray the bursting hot water to human body or head when using sprinkler, before doing that
you should check with hands to make sure the water temperature is proper.
•In order to prevent scald, please confirm the hot water temperature with hand before enjoying 
bath/shower in case that the machine just produced hot water a moment ago, because there’s hot water 
retained in the pipe.
• No people except for the user is allowed to change the temperature setting arbitrarily, the sudden spurt
of hot water may cause scald, while it doesn’t feel good if water temperature suddenly turns cold.

            b. Gi7S 16L FFI

front cover

exhaust cover

over-heat device

PCB

fan

control panel

temperature sensor

water outlet

transformer

gas inlet

gas valve

water inlet

water flow sensor

gas colletor

ignitor

flame sensor

combustion chamber

ignition pin

heat-exchanger

supporter

back cover

Hot water flowrate setting button

 * Press down hot-water flowrate setting button to enter flowrate 

    setting mode. At that time interface indicates 000L. Press down 

    temperature UP/DOWN button to adjust hot water flowrate

    (flowrate unit is 10L).

Display

* Water-out temperature indication (e.g. 88)

* Water out flowrate setting indication (e.g. 100L)

* Error code indication: Blinking display error code if any fault

Power supply button

* Please press down the button once for initial use. Keep the 

   standby condition for normal use.

Temperature/flowrate setting button

*  To set hot-water temperature, stepless in low range 35~48, stepping

    in high range 50, 55, 60, 65 and 70.

*  To set water-out flowrate in water-in flowrate setting mode.

1

Please turn the water-in knob to

 the largest extent.

2

Open the hot-water faucet to che-

ck water flow-out then close 

the faucet.

3

4

Please plug the power cable into

the socket or turn on the power

distribution box.

Please turn the gas valve to the

largest extent.