Commissioning The Heat Pump; Manual Test Run Of The Heat Pump; Start The Heat Pump - IVT Greenline HT Plus C Assembly, Commissioning And Maintenance Manual

Commissioning the heat pump

The heat distribution and heat transfer fl uid circuits should be fi lled and fully
vented before commissioning. Also check that there are no leaks.
As many radiators as possible should be fully open when connecting to an
existing water system. When connecting to a fl oor heating system at least half
of all the fl oor coils should be open. When connecting a fan-assisted radiator
system the fans are started fi rst and then the taps on the fan-assisted radiators
are opened fully.

Manual test run of the heat pump

Instead of starting the heat pump directly in normal mode, you can manually test
run the pumps and valves. This is recommended as in this mode you can easily
fi nd any possible faults. In the menu display Manual operation of all functions
(menu 5.3) you can run all functions manually. Press the Select button to start
test operations. When you exit from the menu display the heat pump returns
to normal mode. For 1-phase heat pumps the compressor may not be restarted
within 10 minutes. This can cause serious damage to the heat pump!
Blocked circulation pumps
Check that the circulation pumps are not blocked before the heat pump is
started for the fi rst time. Slacken the venting screw completely and check/adjust
the freedom of pump rotor by turning the rotor using a screwdriver.

Start the heat pump

1. Connect mains to the heat pump and press the ON/OFF switch on the
control panel. The control unit automatically measures the phase sequence
so the compressor does not operate in the wrong direction. If the phase
sequence is incorrect, the alarm 3-phase incorrect is displayed Read more
about the alarm under the heading What to do if a fault occurs in the heat
pump. Disconnect the mains power to the heat pump and switch the phases
manually.
2. Activate the Installer/Service menu by pressing the Menu button until the
text ACCESS = SERVICE is shown on the menu display.
3. Set Temp. incr. / decr. temporarily to the maximum value. To avoid having
to wait for the heat pump restart timer you can go to the menu Fast restart
of heat pump (menu 5.6) and quickly restart the heat pump (3-phase only).
If the heat pump does not start, press the Info button to see if a heating
demand exists.
4. Check the sight glass inside the heat pump during start up. Bubbles may
appear in the sight glass for a few minutes during start up. The bubbles
should then stop. Bubbles present when the heat pump is running are a fault
symptom. They are probably due to insuffi cient refrigerant. Read more about
the fault symptom under the heading What to do if a fault occurs in the heat
pump.
Further important information on
control unit can be found in the user
section.
Read the User section too before com-
missioning is started.
Press the power switch ON/OFF
63
Commissioning the heat pump
Note
Commiss./Service
Manual operation of
all functions 5.3
Return Select
Rego 637 I/S
080922 16:08:15 Fr
Heat Info Menu
Commiss./Service
Fast restart of
heat pump 5.6
Return Select
Only for 3-phase heat pumps
Check the sight glass