Installation - Saunier Duval SDHE 050 D Installation Manual

3- INSTALLATION

3.4 CHECKING THE PIPE CONNECTIONS FOR
GAS LEAKING
- For both the indoor and outdoor unit sides, check the
joints for gas leaking by the use of a gas leakage
detector without fail when the pipes are connected.
3.5 HEAT INSULATION ON THE PIPE JOINTS
- Put coupler heat insulator on the joints.
AIR PURGE
- Check if the piping connections are secure.
- Check that the stems of both 3- way valves are closed
fully.
- Operate the vacuum pump and start pump down.
- Pump down the system for at least 15 minutes, then
check if the compound pressure gauge reads - 100kPa
(- 76 cm Hg, -1bar)
- At the end of pump down, close the low pressure side
gauge of the gauge manifold fully and stop the vacuum
pump.
- Slowly loosen the valve stem of the 3- way valve.
- Firmly tighten both 3- way valves blank cap and the
charging port cap.
ADDITIONAL CHARGE
- Refrigerant suitable for a piping length of 10 m. is char-
ged in the indoor unit at the factory.
- When the piping is longer than 10 m., additional char-
ging is necessary. (See 3.3)
3.6 GAS LEAKAGE INSPECTION
WARNING!- After connecting the piping, check the
joints for gas leakage with gas leak detector.
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3.7 POWER
(1) The rate voltage of this product is monophase
(230V/1Ph/50 Hz) or triphase (400V/3Ph/50Hz).
(2) Perform wiring work in accordance with standards so
that the room air conditioner can be operated safely
and positively.
3.8 ELECTRICAL WIRING
(1) Connect the connection cords fi rmly to the terminal
block. Imperfect installation may cause a fire.
(2) If the indoor unit connection cord (to the outdoor
unit) and power supply are wired incorrectly, the air
conditioner may be damaged.
(3) Always connect the ground wire.
3.9 MAINTENANCE INSTRUCTIONS
- Never add oil to the appliance; the compressor is filled
with polyaldohol oil, a special oil which cannot tolerate
the presence of other oils.
- The instruments used for filling, pressure measure-
ments, emptying under vacuum and recovering the
fluid, must be compatible and only used for the R-407C
fluid.
- The weight of the refrigerant contained in the storage
bottle must be checked constantly. Do not use it from
the moment the remaining weight is less than 10% of
the total weight.
- In the case of a new charge do not use the charging
cylinder, use a balance and a dip pipe type R-407C
cylinder, charge the weight of R-407C as per the value
indicated on the unit's identification plate (for "split sys-
tems", refer to the installation instructions as the charge
must consider the length of the connecting lines).
- The charge must be undertaken in liquid phase.
- In the case of leakage, do not complete the charge:
recover the remaining refrigerant or recycling and per-
form a total charge. Recovery, recycling or the destruc-
tion of the fluid must be done in compliance with the
laws in force in the country concerned.
- If the refrigerant circuit is opened, you must avoid the
entry of air into the circuit as much as possible, replace
the filter drier and perform the "vacuum operation"
at a minimum level of 3.0 mbar (static).