Toshiba MMY-MAP0804HT8Z-E, MMY-MAP1604HT8ZG-E SMMS-i, Requirement, Installation Manual

SMMS-i Installation Manual

REQUIREMENT

•For a welding work of the refrigerant pipes, be sure to use nitrogen gas in order to prevent oxidation of the inside of the pipes; otherwise clogging of the refrigerating cycle due to oxidized scale may occur.

•Use clean and new pipes for the refrigerant pipes and perform piping work so that water or dust does not contaminate the refrigerant.

•Be sure to use a double spanner to loosen or tighten the flare nut. If a single spanner is used, the required level of tightening cannot be obtained. Tighten the flare nut with the specified torque. (If it is hard to loosen or tighten the flare nut of the balance pipe or packed valve of the liquid side with a double spanner, loosen or tighten the flare nut while holding the valve mounting plate with a spanner.)

SMMS-i					Installation Manual
Type	Pipe		Draw-out forward		Draw-out downward
	diameter
		Cut the L-shaped pipe at the horizontal straight		Cut the L-shape pipe at the vertical straight
		section, then braze the supplied attachment		section, then braze the supplied attachment
		pipe, and the socket and pipe procured locally. pipe, and the socket and pipe procured locally.
			Gas
MAP140	Ø28.6	Liquid	pipe	Liquid	Gas pipe	Gas
			Gas pipe
MAP160		pipe		pipe
			Attachment pipe	Balance	Attachment	pipe
		Balance
			Socket	pipe	pipe
		pipe			Socket

Outer dia. of	Tightening torque (N•m)
copper pipe
6.4 mm	14 to 18 (1.4 to 1.8 kgf•m)
9.5 mm	33 to 42 (3.3 to 4.2 kgf•m)
12.7 mm	50 to 62 (5.0 to 6.2 kgf•m)
15.9 mm	63 to 77 (6.3 to 7.7 kgf•m)

Packed valve of balance pipe

Ball valve of gas side

Packed valve of liquid side

Pipe	Pipe	Section
		to be cut
	Section
	to be cut

Extruding margin of copper pipe with flare machining: B (Unit: mm)

Copper pipe outer	When using R410A	When using	B
dia.	tool	conventional tool
9.5
12.7	0 to 0.5	1.0 to 1.5
15.9

Pipe connection method of valve at the gas side (Example)

Type	Pipe		Draw-out forward			Draw-out downward
	diameter
		Cut the L-shaped pipe at the horizontal straight			Cut the L-shaped pipe at the vertical straight
		section, then braze the supplied attachment			section, then braze the supplied attachment
		pipe and the socket and pipe procured locally.			pipe and the socket and pipe procured locally.
				Gas
MAP080	Ø22.2	Liquid	Gas pipe	pipe	Liquid	Gas pipe	Gas
MAP100		pipe	Attachment		pipe
						Attachment	pipe
		Balance	pipe		Balance
			Socket			pipe
		pipe			pipe	Socket
			Pipe			Pipe	Section
							to be cut
				Section to be
				cut
		Cut the L-shaped pipe at the horizontal straight			Cut the L-shaped pipe at the vertical straight
		section, then braze the supplied attachment			section, then braze the supplied attachment
		pipe and the socket and pipe procured locally. pipe and the socket and pipe procured locally.
		Liquid		Gas	Liquid
MAP120	Ø28.6		Gas pipe	pipe		Gas pipe	Gas
		pipe			pipe
		Balance	Attachment pipe		Balance	Attachment	pipe
		pipe			pipe
			Socket			pipe
						Socket	Section
			Pipe
						Pipe	to be cut
				Section to be
				cut

Extruding margin of copper pipe with flare tools: A (Unit: mm)

Copper pipe outer dia.	A-+00.4	A
9.5	13.2
12.7	16.6
15.9	19.7

*When using the conventional flare tool, to connect R410A pipes with flaring, make a margin approx. 0.5mm longer than that of an R22 pipe so that the flare size matches the one specified. It is convenient to use a copper pipe gauge for size adjustment of the extruding margin.

EN

19-EN – 10 – 20-EN