Daikin 3 H HT F, Installation Manual

8 Commissioning

Installation manual

30

ETVH/9W

Daikin Altherma 3 H HT F

4P644728-1 – 2021.02

8

Commissioning

NOTICE

General 

commissioning 

checklist.

Next 

to 

the

commissioning  instructions  in  this  chapter,  a  general
commissioning  checklist  is  also  available  on  the  Daikin
Business Portal (authentication required).

The  general  commissioning  checklist  is  complementary  to
the  instructions  in  this  chapter  and  can  be  used  as  a
guideline and reporting template during the commissioning
and hand-over to the user.

NOTICE

ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.

NOTICE

Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.

All  automatic  air  purge  valves  must  remain  open  after
commissioning.

INFORMATION

Protective  functions  –  "Installer-on-site  mode"

.  The

software  is  equipped  with  protective  functions,  such  as
room antifrost. The unit automatically runs these functions
when necessary.

During  installation  or  service  this  behaviour  is  undesired.
Therefore, the protective functions can be disabled:

▪

At  first  power-on:

  The  protective  functions  are

disabled by default. After 12 h they will be automatically
enabled.

▪

Afterwards:

  An  installer  can  manually  disable  the

protective  functions  by  setting  [9.G]: 

Disable

protections

=

Yes

.  After  his  work  is  done,  he  can

enable  the  protective  functions  by  setting  [9.G]:

Disable protections

=

No

.

8.1

Checklist before commissioning

After  the  installation  of  the  unit,  first  check  the  items  listed  below.
Once all checks are fulfilled, the unit must be closed. Power-up the
unit after it is closed.

You  read  the  complete  installation  instructions,  as
described in the 

installer reference guide

.

The 

indoor unit

 is properly mounted.

The 

outdoor unit

 is properly mounted.

The following 

field wiring

 has been carried out according

to this document and the applicable legislation:

▪ Between the local supply panel and the outdoor unit

▪ Between indoor unit and outdoor unit

▪ Between the local supply panel and the indoor unit

▪ Between the indoor unit and the valves (if applicable)

▪ Between  the  indoor  unit  and  the  room  thermostat  (if

applicable)

The  system  is  properly 

earthed

  and  the  earth  terminals

are tightened.

The 

fuses

  or  locally  installed  protection  devices  are

installed according to this document, and have NOT been
bypassed.

The 

power  supply  voltage

  matches  the  voltage  on  the

identification label of the unit.

There  are  NO 

loose  connections

  or  damaged  electrical

components in the switch box.

There  are  NO 

damaged  components

  or 

squeezed

pipes

 on the inside of the indoor and outdoor units.

Backup  heater  circuit  breaker

  F1B  (field  supply)  is

turned ON.

The  correct  pipe  size  is  installed  and  the 

pipes

  are

properly insulated.

There is NO 

water leak

 inside the indoor unit.

The 

shut-off valves

 are properly installed and fully open.

The 

automatic air purge

 valves are open.

The 

pressure  relief  valve

  purges  water  when  opened.

Clean water must come out.

The 

minimum  water  volume

  is  guaranteed  in  all

conditions. See "To check the water volume and flow rate"
in 

"5.1 Preparing water piping"

 [

4

 8].

The 

domestic hot water tank

 is filled completely.

8.2

Checklist during commissioning

The 

minimum  flow  rate

  during  backup  heater/defrost

operation  is  guaranteed  in  all  conditions.  See  "To  check
the  water  volume  and  flow  rate"  in 

"5.1  Preparing  water

piping"

 [

4

 8].

To perform an 

air purge

.

To perform a 

test run

.

To perform an 

actuator test run

.

Underfloor screed dryout function

The  underfloor  screed  dryout  function  is  started  (if
necessary).

8.2.1

To check the minimum flow rate

1

Check the hydraulic configuration to find out which
space heating loops can be closed by mechanical,
electronic, or other valves.

—

2

Close all space heating loops that can be closed.

—

3

Start the pump test run (see 

"8.2.4 To perform an

actuator test run"

 [

4

 31]).

—

4

Read out the flow rate

(a)

 and modify the bypass valve

setting to reach the minimum required flow rate + 2 l/
min.

—

(a)

During pump test run, the unit can operate below the minimum
required flow rate.

Minimum required flow rate

25 l/min