🔗 ROOF FAN

Specifications & Dimensions

Model	CAPACITY(CMM)					DIMENSIONS									FAN	MOTOR
	0mmAq	5mmAq	10mmAq	15mmAq	20mmAq	A	B	C	D	E	F	G	H	I	Ø	HP	RPM
HRF-30	32	23				640	640	310	470	40	180	480	700	640	300	1/12	1120
HRF-35	54	41				820	820	360	570	40	200	550	700	700	350	1/8	1120
HRF-40	90	79	68			820	820	410	640	40	220	620	700	750	400	1/4	1120
HRF-50	120	111	96			1000	1000	510	710	50	280	780	950	880	500	1/2	1120
HRF-60	234	215	185	150		1100	1100	610	800	50	340	840	1100	900	600	1	1120
HRF-70	396	357	330	230		1345	1345	720	980	70	400	920	1310	1100	700	2	1120
HRF-90	600	560	500	420	350	1630	1630	920	1050	100	510	1160	1310	1200	900	3	1120
HRF-120	720	640	580	500	420	2000	2000	1220	1520	100	560	1300			1200	5	1120

Amount of Ventilations

Table of Required Ventilation Times
work place	Number of ventilations per hour (times)	work place	Number of ventilations per hour (times)
machine factory	10~15	coating factory	30~60
casting factory	30~60	woodworking factory	15~20
forging factory	40~60	power station	20~30
welding factory	15~20	substation room	30~50
car repair factory	10~15	boiler room	20~60
plating factory	15~30	office	5~10
chemical plant	10~30	storage	6~12
dyeing factory	15~30	lecture room	5~15
paper mill	15~30	hospital	6~12
food factory	12~20	theater	8~20
brewery	20~30	restaurant	8~10
flour mill	6~12	cuisine	20~30
printing factory	5~15
spinning factory	5~10
How to select the number of models
1) Depending on the conditions of the place requiring ventilation, determine the ventilation times by referring to the ventilation times table.
2) Calculate the volume of the building (㎥) = width (m) x length (m) x height (m).				2) Calculate the volume of the building (㎥) = width (m) x length (m) x height (m).	2) Calculate the volume of the building (㎥) = width (m) x length (m) x height (m).	2) Calculate the volume of the building (㎥) = width (m) x length (m) x height (m).
3) Considering the size of the ventilator, the power condition, etc., the ventilation capacity of each model is calculated from the performance table.				3) Considering the size of the ventilator, the power condition, etc., the ventilation capacity of each model is calculated from the performance table.	3) Considering the size of the ventilator, the power condition, etc., the ventilation capacity of each model is calculated from the performance table.	3) Considering the size of the ventilator, the power condition, etc., the ventilation capacity of each model is calculated from the performance table.
4) Required number = Number of required ventilation X Building volume(㎥) / 60min X Ventilation capacity per unit (㎥/h)				4) Required number = Number of required ventilation X Building volume(㎥) / 60min X Ventilation capacity per unit (㎥/h)	4) Required number = Number of required ventilation X Building volume(㎥) / 60min X Ventilation capacity per unit (㎥/h)	4) Required number = Number of required ventilation X Building volume(㎥) / 60min X Ventilation capacity per unit (㎥/h)