Fill valve LK 536 EA
This valve unit contains two shut-off valves, a non-return valve, and an inspection plug.
The fill valve meets EN1717 requirements.
Once the system has been filled, close both shut-off valves.
Safety valve LK 514 10 bar
Opening pressure: 10 bar. Test the valve regularly:
1. Turn the valve knob 1/4 of a turn counterclockwise, and check that water starts
dripping from the valve.
2. After the check, close the valve by turning the knob another 1/4 of a turn counter-
clockwise. The valve should close with a click.
Route the safety valve’s discharge pipe to a floor drain or a drain pan for safe
discharge, ensuring that the pipe has a continuous slope.
● The discharge pipe must be self-draining (the pipe should not be immersed in a
reservoir or the floor gully or allowed to freeze)
● The discharge pipe’s diameter must be equal to or larger than the safety valve’s
nominal diameter.
It is not allowed to place a shut-off valve that can be accidentally closed (or left closed)
between the safety valve and the circuit. Correspondingly, placing a shut-off valve on
the safety valve’s discharge side is not allowed.
2.7 Change-over valve (ECO, optional)
Accessory
Change-over valve kit
Designation
GEOEXCV1
Description
Includes a change-over valve and valve actuator (designation: 34034063 and
34034064).
Install the change-over valve as indicated in the electric diagram and the piping
diagram. When the valve is not energized, the valve is in position B (for ‘building’),
which is used for space heating. When the valve is energized, the valve position is A
(for ‘aqua’), which is used for heating domestic hot water.
● Lubricate the inner surface of the ferrule before installation.
● Tighten the joint with your fingers until it is as tight as you can get it, then tighten
with a wrench.
● Tighten copper pipe joints 1/2 of a turn and steel pipe joints 1/2 of a turn. Use pipe
support sleeves in soft and half-hard copper pipes.
● Tighten plastic pipes using pipe support sleeves as indicated in the manufacturer’s
instructions. As a general rule, plastic pipes should be tightened 1 1/2 turns.
2.8 DHW tank sensor (ECO)
ECO heat pumps come with the DHW storage tank temperature sensor (TE266)
already connected. The sensor cable is approximately 4.5 m long. The sensor probe’s
diameter is 6 mm and length 50 mm.
18 (54)
M8006 2123EN
