To Start And Stop Forced Cooling; Glossary - Daikin Altherma Installer's Reference Manual

▪ when relocating or disposing of the unit,
▪ after maintenance or service to the refrigerant side of the system.
NOTICE
During pump down operation, stop the compressor before
removing the refrigerant piping. If the compressor is still
running and the stop valve is open during pump down, air
will be sucked into the system. Compressor breakage and
other injury will be the result due to abnormal pressure in
the refrigerant cycle.
Pump down operation will extract all refrigerant from the system into
the outdoor unit.
1 Remove the valve lid from liquid stop valve and gas stop valve.
2 Carry out the forced cooling operation.
3 After 5 to 10 minutes (after only 1 or 2 minutes in case of very
low ambient temperatures (<−10°C)), close the liquid stop valve
with a hexagonal wrench.
4 Check with the manifold if the vacuum is reached.
5 After 2-3 minutes, close the gas stop valve and stop forced
cooling operation.
b
c
a
d
e
d
a Gas stop valve
b Closing direction
c Hexagonal wrench
d Valve lid
e Liquid stop valve
13.2

To start and stop forced cooling

Confirm that dipswitch SW2 is in COOL mode.
1 Press the forced cooling operation switch SW1 to begin forced
cooling.
2 Press the forced cooling operation switch SW1 to stop forced
cooling.
H C
E O
SW1
A O
T L
SW2
NOTICE
Take care that while running forced cooling operation, the
water temperature remains
temperature read out of the indoor unit). You can achieve
this, for example, by activating all fans of the fan coil units.
ERLQ004~008CAV3 + EHBH/X04+08CA
Daikin Altherma - Low Temperature Split
4P313774-1C – 2012.11
higher than 5°C (see
14

Glossary

Dealer
Sales distributor for the product.
Authorized installer
Technical skilled person who is qualified to install the
product.
User
Person who is owner of the product and/or operates the
product.
Applicable legislation
All international, European, national and local directives,
laws, regulations and/or codes that are relevant and
applicable for a certain product or domain.
Service company
Qualified company which can perform or coordinate the
required service to the product.
Installation manual
Instruction manual specified for a certain product or
application, explaining how to install, configure and maintain
it.
Operation manual
Instruction manual specified for a certain product or
application, explaining how to operate it.
Accessories
Labels, manuals, information sheets and equipment that are
delivered with the product and that need to be installed
according to the instructions
documentation.
Optional equipment
Equipment made or approved by Daikin that can be
combined with the product according to the instructions in
the accompanying documentation.
Field supply
Equipment not made by Daikin that can be combined with
the product according
accompanying documentation.
14 Glossary
in the accompanying
to the instructions in the
Installer reference guide
75