14 | Unit installation
Installer and user reference guide
73
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
▪ Insulate at least the first meter of ducting against thermal losses with glass
wool or polyethylene foam (field supply) with a minimum thickness
according to the expected ambient conditions. See "15.2 Preparing
refrigerant piping"[483].
▪ If both sides of the unit have ducting, insulate both sides.
▪ Install the accessory sealing material at the end of the field supply insulation
of the air outlet. Apply the accessory sealing material under the field supply
insulation. Create an overlap of 50mm. If the entire outlet duct is thermally
insulated from the unit to the outside wall, the accessory sealing material is
not necessary.
a d ed e fgcg b
≥1000
50
250
(mm)
≥1000
a SV unit
b Duct connection (air outlet)
c Option kit EKBSDCK (air inlet)
d Duct (field supply)
e Insulation (field supply)
f Sealing material (accessory)
g Screw (field supply)
4 Protect the ducting against reverse airflow from wind.
5 Prevent that animals, debris and dust can enter the ducting.
6 If necessary, separate the duct and wall electrically.
7 Optionally: provide service holes in the ducting to make maintenance easier.
8 Optionally: provide sound insulation. As the ducting is only used when a
refrigerant leak has been detected, it is not necessary to insulate the ducting
against noise. However, when the SV unit is installed in sound-sensitive areas
where additional measures are taken, it can be advised to also insulate the
ducting.
14.5.2 To install the duct closing plate
The duct closing plate is only allowed if it is not necessary to ventilate the
enclosure for the SV unit. This means:
▪ when no safety measures are required, or
▪ when natural ventilation safety measure is required, or
▪ when an external alarm is required.
See "13.3To determine the required safety measures"[445].
1 Remove the duct connection. Do not not throw away the screws.
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