8
Tap wate
r
Safety check valve
Notes
(1)
For safe use of water, water outlet/inlet of water tank must connect with a certain length of PPR pipe ,L
≥70×R2(cm, R is inside radius of the pipe). Moreover, heat preservation should be conducted and metal
pipe cannot be used. For the first use, water tank must be full of water before the power is on.
(2)
The water may drip from the discharge pipe of the pressure-relief device and that this pipe must be left
open to the atmosphere.
(3) The pressure-relief device is to be operated regularly to remove lime deposits and to verify that it is not
blocked.
(4)
The discharge pipe connected to the pressure-relief device is to be installed in a continuously downward
direction and in a frost-free environment.
(5)
The appliance is intended to be permanently connected to the water mains and not connected by a hose-
set.
(6)
The type of the pressure-relief device is A3J, and this device shall be installed with threaded connection.
(7)
The replenishing water pressure in water tank shall be beyond 0.2MPa and below 0.7MPa.
(8)
The method of water drainage must be operated strictly abide by the instruction on the label of the water
tank.
4. Wiring Diagrams
(1)
Single-phase water tank
