Toshiba MAP0801T8 Installation Manual page 22

5
REFRIGERANT PIPING
Full opening of valve
• Open valve of the outdoor unit fully.
• Using 4mm-hexagonal wrench, open fully the valve rods at liquid and balance sides.
• Using a spanner, etc, open fully the valve rod of packed valve (MMY-MAP0801
side.
• Using the pinchers, open fully the handle of the ball valve (MMY-MAP0501
Be careful that handling of ball valve differs from that of packed valve.
How to open the ball valve at gas side
Valve unit
Handle
Pull out the handle and
using cutting pliers, etc.
turn it counterclockwise
by 90˚. (Open fully)
Charge port
Heat insulation for pipe
• Apply heat insulation of pipe separately at liquid, gas, and balance sides.
• Be sure to use thermal insulator with heat-resisting temp. 120°C or more.
• After piping connection work has finished, cover the opening of the piping/wiring panel with the piping cover, or
fill silicon or putty in space of the pipes.
• In case of drawing-out the pipes downward or sideward direction, also close the openings of the base plate
and the side plate.
• Under the opened condition, a trouble may be caused due to entering of water or dust.
In case of using pipe cover
Piping/wiring panel
Drawing-out
frontward
Drawing-out downward
Charge port
Flare nut
Drawing-out sideward
Close the opening
with pipe cover.
∗
, MAP0601
Valve unit
Push in handle.
Closed completely
Flare nut
CAUTION
In case of using no pipe cover
Piping/wiring panel
Drawing-out
frontward
19
∗ ∗
, MAP1001 , MAP1201
∗
) at gas side.
Handle position
Handle
Opened fully
Drawing-out sideward
Fill silicon or putty in
periphery of the pipes.
Drawing-out downward
∗
) at gas