Toshiba HFC R-410A Procedure and result of equipment selection, Procedure of equipment selection

Procedure and result of equipment selection

1.Procedure of equipment selection

a.Calculate cooling for every room.

b.Select an indoor unit to match the cooling load for every room from the table on page 10.

c.Select the outdoor module to match the indoor units selected in point b. Select the outdoor modules based on the critical factors and the combination rule. Choose a tentative outdoor module that will match the indoor units, and check whether the selection agrees with the combination rule. Perform the capacity correction based on the pipe length, system lift, indoor set temperature, outdoor temperature.

Then, make sure the corrected system cooling capacity satisfies the cooling load.

2.Equipment selection and capacity check

	Air conditioning load					Equipment selection
	Floor	Room No.	Indoor air conditioning load (kW)			Indoor unit				Outdoor unit
						Model		Capacity (kW)		Model	Capacity (kW)
			Cooling	Heating		MMU-		Cooling	Heating	MMY	Cooling		Heating
	4F	4-1	6.0 (16 o’clock)	5.4		AP0241H	7.1		8.0	AP2801HT8	78.5		88.0
		4-2	5.2 (14 o’clock)	4.2		AP0181H	5.6		6.3
		4-3	5.0 (14 o’clock)	4.2		AP0181H	5.6		6.3
		4-4	3.2 (12 o’clock)	2.7		AP0121H	3.6		4.0
		4-5	6.4 (10 o’clock)	5.4		AP0241H	7.1		8.0
	3F	3-1	12.7	12.0		AP0481H	14.0		16.0
	2F	2-1	4.8	4.5		AP0181H	5.6		6.3
		2-2	4.6	4.8		AP0181H	5.6		6.3
		2-3	—	—		—		—	—
	1F	1-1	6.5	6.0		AP0241H	7.1		8.0
		1-2	6.5	6.3		AP0241H	7.1		8.0
		1-3	7.2	7.0		AP0301H	9.0		10.0
		1-4	5.1	4.5		AP0181H	5.6		6.3
	Note: ( ): Peak occurrence time
	Piping distance				Capacity correction				Capacity check after correction
	Floor	Room No.	Equivalent	Height	Pipe correction x				Capacity (kW)			Result
			length (m)	difference (m)	temp. correction
					Cooling		Heating		Cooling	Heating
	4F	4-1	43	12	0.920		0.957		6.5	6.9		Good
		4-2			x		x		5.2	5.4
		4-3			1.0		1.0		5.2	5.4
		4-4			x		x		3.3	3.5
		4-5			1.0		0.95		6.5	6.9
	3F	3-1			=		x		12.9	13.8
2F		2-1			0.920		0.95		5.2	5.4
		2-2					=		5.2	5.4
		2-3					0.864		—	—
	1F	1-1							6.5	6.9
		1-2							6.5	6.9
		1-3							8.3	8.6
		1-4							5.2	5.4

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