Enertech Global
32
EAV - EME/EMD Rev. A Models
Installation and Operations Manual
Preparation
•
Check that the pipe system is complete.
•
Check the pipe system for leaks.
•
Check that the electrical installation is prepared.
•
Check that the electrical supply is connected so that the
compressor crankcase heater can start warming up the
compressor, if necessary.
•
The compressor crankcase heater must have been active
for at least 3 hours before compressor operation can be
initiated. This is done by connecting control voltage. EAV
permits compressor start after the compressor has been
warmed up. This can take up to 3 hours.
Filling and Venting the Hydronic System
1.
Fill the hydronic system to the necessary pressure.
2.
Vent the system using the venting port on the flex tube
(included) and possibly the circulation pump.
3.
See indoor section installation for detailed flushing/purging
piping system of air.
Start-up and Inspection
1.
Communication cable, terminal block (X22:1-4) must be
connected.
2.
Turn the isolator switch on.
3.
Ensure that the EAV is connected to the power source.
4.
Reinstall the removed panels and cover.
5.
After the power to EAV has been switched on and there
is a compressor demand from the indoor module/control
module, the compressor starts once it has warmed up, after
max 180 minutes. The length of this time delay depends on
whether the compressor has been warmed up previously.
See chapter Preparations section, above.
6.
Adjust menu settings via the indoor HMI (touchscreen
Human Machine Interface) as necessary.
7.
Fill in the commissioning report.
8.
Remove the protective film from the cover on EAV.
Preparing Piping System
Air is initially released from the water/antifreeze solution and
venting may be necessary. If bubbling sounds can be heard from
the heat pump, the circulation pump and piping/fan coils the
entire system will require further flushing/purging. When the
system is stable (correct pressure and all air eliminated) the
control system can be set as required.
General
EAV is equipped with an internal electronic controller that
handles all functions necessary for operation of the heat pump,
e.g. defrost cycle, stop at max/min. temperature, connection
of the compressor heater, and protective functions during
operation. Temperatures, number of starts and run time, are
displayed in the indoor module/control module.
The integrated control shows information via status-LEDs and
can be used during servicing.
Under normal operating conditions the home owner does not
need to have access to the controller.
EAV communicates with the Enertech indoor module/control
module, which means that all settings and measurement values
from EAV are adjusted and displayed on the indoor module/
control module.
Section 6: Unit Piping Installation
