Haier FCD-HM50 Operation Instruction Manual page 11

Installation Method
Connection and Operation of the Safety Valve
Refer to the arrow direction shown on safety valve (the
arrow points to the water heater), and install the safety
valve with rated pressure of 0.75MPa (and with a joint of
G1/2") on the inlet pipe. During the heating period of
power on of water heater, the relief hole of the safety
valve will release a small amount of water. It is a normal
phenomenon resulting from thermal expansion of water
inside this unit. Keep the relief hole to open to the outside
and do not block.
Note: This kind of unit needs a drain pipe for the safety
valve, and the method follows: tighten one side of the
drain pipe onto the relief hole of the safety valve, the
drain pipe can be shortened or can be extended at your
discretion based on the actual situation, and connect the
other side of the safety valve with the opening of the
sewage to avoid spraying sewage indoors. The drain pipe
connected with the safety valve should be installed
obliquely maintaining a downward angle in an
environment free of frost.
Turn on the power and try the unit after it is confirmed
that it is filled with water and there is no leakage at each
joint, and the power is in conformity with requirement.
Wall-mounted Installation Method:
The water heater is machine-controlled device before delivery, and users can adopt the following method to
change to a line-controlled installation:
Firstly, push out the bottom cover in a the direction away from transparent decoration accessories to
dismantle the bottom cover, remove the display panel, disconnect the signal wire bundle, and choose a proper
position to conduct a line-controlled installation according to the length of the signal wire.
Determine the installation position of line-control box, use two Φ4mm screws and matching plastic
expansion tubes to fix the wall-mounted plate onto the wall. Insert the control panel box onto the
wall-mounted plate based on the matching way of wall-mounted plate and bottom box of the control panel.
Re-install the bottom cover after the above installation is completed.
Note: The installation process of line-control is quite complicated, so it is suggested that the user should not
change the installation, and it should be done by professional serviceman who has received training to avoid
bodily injury or property damage.
Fig. a: Wall-mounted Plate
Inlet of Cold Water
Outlet of Hot Water
Fig. b: Bottom Cover
8
Small Handle
of Safety Val
Relief Hole
Fig 5