3 | Specific installer safety instructions
Installer reference guide
16
CVXM20+FVXM25~50A2V1B
Split system air conditioners
4P625991-1 – 2020.06
3 Specific installer safety instructions
Always observe the following safety instructions and regulations.
Unit installation (see "6Unit installation"[423])
WARNING
The appliance shall be stored in a room without continuously operating ignition
sources (example: open flames, an operating gas appliance or an operating electric
heater).
CAUTION
For walls containing a metal frame or a metal board, use a wall embedded pipe and
wall cover in the feed-through hole to prevent possible heat, electrical shock, or fire.
Piping installation (see "7Piping installation"[435])
DANGER: RISK OF BURNING/SCALDING
CAUTION
▪ Use the flare nut fixed to the unit.
▪ To prevent gas leakage, apply refrigeration oil only to the inside of the flare. Use
refrigeration oil for R32.
▪ Do NOT reuse joints.
CAUTION
▪ Do NOT use mineral oil on flared part.
▪ NEVER install a drier to this R32 unit to guarantee its lifetime. The drying material
may dissolve and damage the system.
CAUTION
▪ Incomplete flaring may cause refrigerant gas leakage.
▪ Do NOT re-use flares. Use new flares to prevent refrigerant gas leakage.
▪ Use flare nuts that are included with the unit. Using different flare nuts may
cause refrigerant gas leakage.
Electrical installation (see "8Electrical installation"[440])
DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised electrician and MUST comply
with the applicable legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical construction MUST comply
with the applicable legislation.
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