Toshiba MMY-MAP1204HT8Z-E Refrigerant Piping, „Connection of refrigerant pipe, No Good

17-EN – 9 – 18-EN

SMMS-iInstallation Manual

When drawing pipes downward

		[Vertical connection of branch units]
▼ Figure 5		▼ Figure 6
GOOD		NO GOOD
Header unit	Follower unit	Follower unit
A	B	C

L-shaped
pipe
	To gas-side	To gas-side
To gas-side branch	branch unit	branch unit
	To gas-side branch
unit
	unit

SMMS-i Installation Manual

7 REFRIGERANT PIPING

WARNING

•If the refrigerant gas leaks during installation, ventilate the room.

If the leaked refrigerant gas comes into contact with fire, noxious gas may be generated.

•After installation, check that the refrigerant gas does not leak.

If the refrigerant gas leaks into the room and comes into contact with fire such as a fan heater, stove, or kitchen range, noxious gas may be generated.

„Connection of refrigerant pipe

• The refrigerant pipe connecting section is set in the
outdoor unit. Remove the front panel and the piping/	Hook
wiring panel. (M5: 9 pcs.)
• As shown in the illustration on the right, the hooks are
at the right and left sides of the front panel. Lift up and

•Adding only one follower unit is possible. Install the additional unit so that its position is opposite to the header unit. Use an extension valve for installation (See the figure above.).

Specify the pipe diameter in advance to allow for adding another unit.

remove the front panel.

•	Pipes can be drawn out forward or downward from the
	outdoor unit.
• When drawing out the pipe forward, draw it out to the
	outside via the piping/wiring panel, and leave a space		0
	of 500mm or more from the main pipe connecting the	5
	outdoor unit with the indoor unit, considering service
	work or other work on the unit. (For replacing the
	compressor, 500mm or more space is required.)
•	When drawing out the pipe downward, remove the
	knockouts on the base plate of the outdoor unit, draw
	the pipes out of the outdoor unit, and perform piping on
	the right/left or rear side. Downward length of the balance

							Front panel
					o	r	Piping/wiring panel
			m
							(Rear piping)
0	m			e
		o	r
	m					(Left
							(Right
						piping)
Drawing out							piping)
						forward

(Left piping)	Drawing out	(Right piping)
	downward

pipe should be 5m or less.

	Ball valve of gas
Ball valve of gas	side
side
Packed valve of liquid	Ball valve of liquid
	side
side
	Packed valve of
Packed valve of	balance pipe
balance pipe

(MAP080, MAP100, MAP120) (MAP140, MAP160)