Toshiba MMY-MAP0804HT8-E, MMY-MAP1604HT8ZG-E SMMS-i, Installation Manual, 25-EN, 26-EN

25-EN

SMMS-i			Installation Manual
No. Piping parts	Name	Selection of pipe size		Remarks
		Connecting pipe size of indoor unit
		Capacity rank	Gas side	Liquid
				side

– 13 –	26-EN
SMMS-i	Installation Manual

„Allowable length of refrigerant pipes and allowable height difference between units

Branching section		007 to 012 type	15m or less real length	Ø9.5	Ø6.4
	Indoor unit
(5) È			Real length exceeds 15m	Ø12.7	Ø6.4
	connecting pipe
Indoor unit		015 to 018 type		Ø12.7	Ø6.4
		024 to 056 type		Ø15.9	Ø9.5
		072 to 096 type		Ø22.2	Ø12.7

Selection of branching section (Y-shaped branching joint)

				Total capacity code of indoor units					Model name
				Equivalent to HP			Equivalent to
								capacity
		Y-shaped
(6)	Branching section				Below 6.4			Below 18.0	RBM-BY55E
		branching joint
			Y-shape	6.4 to below 14.2			18.0 to below 40.0		RBM-BY105E
			branching joint	14.2 to below 25.2			40.0 to below 70.5		RBM-BY205E
					25.2 or more			70.5 or more	RBM-BY305E
		Selection of branching section (Branching header)
				Total capacity code of indoor units					Model name
				Equivalent to HP				Equivalent to
								capacity
				For 4		Below 14.2		Below 40.0	RBM-HY1043E
			*2	branches		14.2 to below 25.2		40.0 to below 70.5	RBM-HY2043E
(7)	Branching section	Branching header	Branching header	For 8		Below 14.2		Below 40.0	RBM-HY1083E
				branches		14.2 to below 25.2		40.0 to below 70.5	RBM-HY2083E
		*2: Up to a total of 6.0 maximum equivalent to HP capacity codes is connectable to one line
			after branching of header. When the total capacity codes of all outdoor units are 12 to below
			26 (equivalent to HP) and you use a branching header for the first branching section, use

aRBM-HY2043E or RBM-HY2083E regardless of the total capacity codes of outdoor units at downstream side. In addition, you cannot use a branching header for the first branching section when the total capacity codes of all outdoor units are over 26 (equivalent to HP).

Outdoor unit connection piping kit (For linking of outdoor units)

				Total capacity code of outdoor units*3		Model name
				Equivalent to HP	Equivalent to
		Outdoor unit			capacity
(8)	Branching section	connection piping	Outdoor unit	Below 26.0	Below 73.0	RBM-BT14E
		kit (For linking of
		outdoor units)	connection piping
			kit (For linking of	26.0 or more	Above 73.0	RBM-BT24E
			outdoor units)
			*3: Downstream side when regarding the main piping as the start point

Height difference between outdoor units

H3 ≤ 5 m

Height difference between outdoor and indoor units:

H1 ≤ 70 m

D

Follower unit

	Outdoor unit
	A	B	C	pipes
	unit	unit	unit
	Header Follower		Follower	connectingunit
			Ld
	La	Lb	Lc	Outdoor
	LA	LB
L1	Outdoor unit connection piping kit
	(For linking of outdoor units)
piping
	The longest piping between outdoor units:
Main	L0 ≤ 25 m

			Branching header
	Indoor unit connecting				Y-shaped branching
				L7	joint
First branching	pipe
section		Indoor unit
		a	b	c	d	e
L3		The longest piping length: L ≤ 235 m
	The longest piping length from the first branch: Li ≤ 90 m
	Y-shaped		L5	L6
	branching joint	L4
	f	g		h	i	j
	Indoor unit

(j)

Height difference between indoor units: H2 ≤ 40 m