4 Unit installation
Installation manual
8
EHVH04+08SU18+23EA
Daikin Altherma 3 R F
4P629088-1C – 2021.11
4.1.3 Installation patterns
Depending on the total refrigerant charge in the system and the type of room in which you install the indoor unit, different installation patterns
are allowed:
If… Then…
Total refrigerant charge in the system Room type Allowed patterns
<1.84kg (i.e. if the piping length is <27m) All 1
(2, 3 and 4 are superfluous. There is no need
to check the minimum floor area or to provide
ventilation openings.)
≥1.84kg (i.e. if the piping length is ≥27m) Living room, kitchen, garage, attic, basement,
storage room
2, 3
Technical room (i.e. room that is NEVER
occupied by persons)
2, 3, 4
PATTERN 1 PATTERN 2 PATTERN 3 PATTERN 4
Ventilation openings N/A N/A Between room A and B Between room A and
outside
Minimum floor area N/A Room A Room A + Room B N/A
Restrictions See "PATTERN 1"[48] See "PATTERN 2 and 3"[48] See "PATTERN 4"[410]
Room A (= room where indoor unit is installed)
Room B (= adjacent room)
a1 Bottom opening for natural ventilation
a2 Top opening for natural ventilation
PATTERN 1
For PATTERN 1 you only need to comply with the spacing guidelines described in "4.1.1Installation site requirements of the indoor unit"[47].
PATTERN 2 and 3
For PATTERN 2 and 3, additionally to the spacing guidelines described in "4.1.1Installation site requirements of the indoor unit"[47], you also
need to comply with the minimum floor area requirements as described in the following flow chart. The flow chart uses the following tables:
"11.3Table 1 – Maximum refrigerant charge allowed in a room: indoor unit"[446], "11.4Table 2 – Minimum floor area: indoor unit"[446] and
"11.5Table 3 – Minimum bottom opening area for natural ventilation: indoor unit"[446].
INFORMATION
Multiple indoor units. If two or more indoor units are
installed in a room, you must consider the maximum
refrigerant charge that can be released in the room when a
SINGLE leak occurs. Example: If two indoor units are
installed in the room, each with its own outdoor unit, then
you have to consider the refrigerant charge of the largest
indoor-outdoor combination.