Toshiba MCY-MAP0401TP Series Installation Manual page 16

2FAN_IM_DB04905901-00.book Page 15 Friday, October 24, 2014 3:19 PM
Example: (040 type)
L2
L1
L4
A
L1 Ø9.52: 10 m L2 Ø9.52: 10 m
L5 Ø6.35: 3 m L6 Ø6.35: 4 m
A MMU-AP0154H* B MMU-AP0094H*
Additional charge amount R (kg)
= ( Lx × 0.025 kg/m ) + ( Ly × 0.055 kg/m ) + ( a + b + c + d )
= ( 15 × 0.025 kg ) + ( 25 × 0.055 kg ) + ( 1.0 kg )
= 2.75 kg
Lx: Real total length of liquid pipe diameter 6.35 mm (m)
Ly: Real total length of liquid pipe diameter 9.52 mm (m)
a: Corrective amount of regrigerant depending on the unit A [kg]
b: Corrective amount of regrigerant depending on the unit B [kg]
c: Corrective amount of regrigerant depending on the unit C [kg]
d: Corrective amount of regrigerant depending on the unit D [kg]
Charging of refrigerant
• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the
liquid side.
• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas
sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas side. In
this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.
• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.
EN-29
L3
L7
L6
L5
B C D
L3 Ø9.52: 5 m L4 Ø6.35: 3 m
L7 Ø6.35: 5 m
C MMU-AP0074MH* D MMD-AP0074SPH*
– 15 –
 Full opening of the valve
Open the valves of the outdoor unit fully.
Liquid side : Using a 4mm-hexagonal wrench, fully open the valve rods.
Gas side : Using a 5mm-hexagonal wrench, fully open the valve rods.
 Heat insulation for pipe
• Apply heat insulation of pipe separately at the liquid, gas, and balance sides.
• Be sure to use thermal insulator resistant up to 120 °C or higher for pipes at the gas side.
 Finishing after connecting pipes
• After piping connection work has been finished, cover the opening of the piping / wiring panel with the piping cover,
or fill silicon or putty into the space between the pipes.
• In case of drawing-out the pipes downward or sideward, also close the openings of the base plate and the side
plate.
• Under the opened condition, a problem may be caused due to the entering of water or dust.
When using the piping cover
Drawing-out
sideward
Drawing-out
frontward
Drawing-out
downward
Pipe holding bracket
Attach pipe holding brackets following the table below.
Diameter of pipe (mm) Interval
Ø19.05 or less
Installation Manual
When not using the piping cover
Drawing-out sideward
Fill silicon or putty into the
Drawing-out
periphery of the pipes.
frontward
Drawing-out
downward
2 m
EN-30