NHN 80V Series is a door closer of slim and modern design with adjustable closing force of EN2-7 conforming to EN1154 with CE mark. Three body sizes will cover full door size requirements and applications.

Standard Square Body with Cover & Accessories. EN Standard Power Adjustable by Spring EN 1154

Closing Force – Adjustable to EN1154 size 2-4 for 83v, size 3-6 for 85v and size 6-7 for 87v.
Economic – Low inventory costs and reduced stocking requirements thanks to its stream and non-handed design
Back Check – Provides a cushioning effect when the door is forcibly thrown open but does not serve as a substitute for a door stop.
Delayed Action – Provides prolonged closing time to assist passage of trolley’s, wheel chairs and elderly people etc…
Standard Finishes – Sliver, Dark Brown or Gold. Other finished on request available.
Guarantee – A free replacement ex-works if any closer proved defective by reason either of faulty manufacture or defect in materials.

Selection chart

83V Series
EN	Spring Strength	Regular	Hold Open	Back Check	Delayed	Slide Arm
2	< 850mm \| <40kg	83v	183v	83v-BC	83v-DA	83v-GL
3	< 950mm \| < 60kg
4	<1100mm \| <80kg
85V Series
EN	Spring Strength	Regular	Hold Open	Back Check	Delayed	Slide Arm
4	<1100mm \| <80kg	85v	185v	85v-BC	85v-DA	85v-GL
5	<1250mm \| <100kg
6	<1400mm \| <120kg
87V Series
EN	Spring Strength	Regular	Hold Open	Back Check	Delayed	Slide Arm
6	<1400mm \| <120kg	87v	187v	87v-BC	87v-DA	87v-GL
7	<1600mm \| <140kg

Closing Force Adjustment

The position indicated by figure ‘A’ is the standard postion of the eccentric shoe. By turning the show 180deg. the position shown in figure ‘B’, the door closing force increases about 25% just before the door closes (during last 10deg.).

Closing Speed Adjustment

Latching Angle Adjustment

Spring Power Adjustment

Turn the spring adjusting screw clockwise the required number of turns to match the door width as indicated in the chart. Where strong draft resistance exists increase the spring power as needed.

Options

Model / Application	Size (EN)	No.of Turns	Direction	Max. Opening Angle
83v	2	6	-	180
	3	0	*	180
	4	3	+	180
85v Fixing Pos.1	3	0	*	180
85v Fixing Pos.1	4	1	+	180
85v Fixing Pos.2	5	0	*	180
85v Fixing Pos.2	6	4	+	180
87v	6	5	-	180
87v	7	0	*	180

Latching Function (standard)

This function increases the door closing speed in the last 0 – 2deg. before the fully closed position, ensuring quick and complete door closure. This function is most useful with an airtight door or with a door with a tight latch.
The latch angle is factory set at 0deg., turn the link counter-clockwise about 4 turns (this extends the link) and a latch angle of 2deg. is obtained.

Back-check Function (optional)

If a gust of wind or other strong force hits the door in the opening direction, it can damage the wall or cause injury to people.
The back-check function works within the door opening range 70 – 85 to 180deg. The back-check power can be adjusted with the back-check valve.

Delayed Door Closing Function (optional)

This function holds the door open temporarily and resumes its regular closing sequence after the delayed closing area. It facilitates passage with a wheelchair or stretcher etc…
The delayed door closing action takes effect all the way from 180 – 85deg. door opening.
The closing area can be adjusted with the delay closing valve. The maximum closing time from 180deg. opening to 85 deg. is 90sec. when the delay valve is fully screwed in.