64
FOR THE INST
ALLER
Press the power switch ON/OFF
Check the sight glass
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.
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 wrong the alarm “Phase sequence error” will
trip. Read more about the alarm under the heading
What to do if a fault
occurs
. 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.
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
.
5. Make the necessary settings on the control panel.
a.
Confi rm connected external sensors. If T3 (GT3), T4 (GT4) or T5
(GT5) have been connected, you must confi rm these so the control
unit knows they are installed. The displays presented by the sensors
are only shown if the sensors have been confi rmed.
b. Set the maximal output to be used by the electric cassette. Choose
between 1/3, 2/3 and 3/3. It is important that the electrical installation
is adapted to handle the maximum electrical output. IVT supplies the
control unit set to 2/3. For more information about this see the heading
Technical information
.
Note
Further important information on
control unit can be found in the user
section.
Read the User section too before com-
missioning is started.
Commissioning the heat pump
Rego 637 I/S
030915 16.08.15 Tu
Heat Info Menu
Commiss./Service
Fast restart of
heat pump 5.6
Return Select
Commiss./Service
Connected extra
sensor in op 5.13
Return Select
Commiss./Service
Select conn capacity
electrical cass 5.2
Return Select