3 | Specific installer safety instructions
Installer reference guide
15
CVXM20A + FVXM25~50A
Split system air conditioners
4P625991-1C – 2021.09
3 Specific installer safety instructions
Always observe the following safety instructions and regulations.
Unit installation (see
"6Unit installation"[
4
22]
)
WARNING
CVXM-A and FVXM-A Floor Standing range is allowed to be combined ONLY with
systems with total refrigerant amount <1.842 kg. Therefore in case of combination
with outdoor units 3MXM40N8 or 3MXM52N8, the total liquid refrigerant piping
length of the installation MUST be ≤30m.
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"[
4
35]
)
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"[
4
40]
)
DANGER: RISK OF ELECTROCUTION
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