User Manual - Nibe EL Series User's And Installer's Manual

INSPECTION OF THE INSTALLATION
Current regulations require the heating installation to be inspected before it is commissioned. The inspection must be
carried out by a suitably qualified person.
Description
✔
Hot water (page 13)
Shut off valves
Cold water (page 13)
Shut off valves
Non-return valve
Mixing valve
Safety valve
Electricity (page 13)
Connected supply

User manual

MAINTENANCE
SAFETY VALVE
The safety valve (FL1) must be inspected regularly, about 4
times a year, to prevent clogging. The check is made by
turning the safety valve's knob anticlockwise, water should
then flow through the overflow pipe. If this does not happen
then the safety valve is defective and must be replaced.
The safety valve sometimes releases a little water after hot
water has been used. This discharge is caused by the expan-
sion of cold water entering the water heater, resulting in a
pressure increase, whereby the safety valve opens.
EMPTYING
1. Turn off the power to the water heater.
2. Shut off the cold water inlet with valve QM35).
3. Turn the mixer valve (FQ1) fully anticlockwise.
4. Open the safety valve (FL1), turn slowly anticlockwise
until it remains in the raised position. Draining is through
the safety valve overflow pipe.
5. When draining, air must be let into the system by open-
ing some hot water taps, preferably the closest and
lowest. If this is not sufficient, loosen a pipe coupling
(XL4) on the mixer valve.
6. For faster drainage loosen the plug (QM5) a couple of
turns. Some water may run out at the plug.
NOTE
Hot water may splash out of the vent screw hole
NOTE
Water may splash at the overflow pipe
NIBE EL | EN
Notes
NOTE
The overflow pipe must be connected to position
(XL48).
It can take a few minutes for draining to start. To speed up
draining, air can be introduced via the vent screw (QM5).
Keep the valves' positions after the above actions until the
water heater is to be used again.
A small amount of water may remain at the bottom of the
water heater after completing the draining stages described
1 – 6.
When installed in a location that is exposed to the risk of
frost, the water heater must be emptied whenever it is not
in operation. Freezing will result in the water heater bursting.
Signature Date
11