ViewSonic VS10872 manual Make sure the heat ventilation holes are not blocked

Projection	4 : 3 Screen Size –Diagonal			16 : 9 Screen Size-Diagonal
Distance		(inch)			(inch)
(m)
	Wide		Tele	Wide		Tele
1.2	33.0		27.5	30.2		25.2
1.5	41.2		34.3	37.8		31.5
2	55.0		45.8	50.4		42.0
2.2	60.5		50.4	55.5		46.2
3	82.5		68.7	75.7		63.1
4	110.0		91.6	100.9		84.1
5	137.5		114.5	126.2		105.1
6	165.0		137.5	151.4		126.2
7	192.5		160.4	176.6		147.2
8	220.0		183.3	201.9		168.2
9	247.5		206.2	227.1		189.3
10	275.0		229.1	252.4		210.3

* This table is for user reference only.

NOTE

Position the projector in a horizontal position; other positions can cause heat build-up and damage to the projector.

Make sure the heat ventilation holes are not blocked.

Do not use the projector in a smoky environment. Smoke residue may cause buildup on critical parts (i.e. DMD, lens assembly, etc.)

ViewSonic PJ458D 19