Key takeaways
- LCN defines its regular arm as a double lever, non hold open arm; a 4040XP can hold the door open with one of LCN's hold open arms.
- LCN lists 4040XP hold open points from 90° up to 120° in hinge (pull) side mounting and from 85° up to 120° in top jamb (push) side mounting, with the hold open arm.
- LCN's 4040XP, 4010 and 4110 instruction sheets each carry a note that hold open arms must not be installed on fire rated doors, and its track sheet says the same of hold open tracks.
- For a 4040XP mounted on the hinge side or top jamb, LCN recommends an auxiliary stop at the hold open point or where the door cannot swing beyond 120°.
- LCN's SEM 7800 magnets are fail safe and hold until the current is interrupted, with a manual door closer closing the door.
Which LCN closers can hold a door open?
A hold-open closer is a door closer whose arm or track can keep the door standing open at a set angle. LCN's surface closers can do this with one of LCN's hold open arms or tracks. For fire and smoke barrier doors, LCN also makes holders with electrically controlled hold open, covered further down this page.
For how hold-open and non-hold-open closers differ on any brand, see the general guide to hold-open and non-hold-open door closers.
| LCN family | What holds the door open | What LCN lists |
|---|---|---|
| 4040XP | Hold open arm (double lever) | The regular arm is non hold open. Hold open arms are adjustable at the elbow or shoe. |
| 4040XPT (track) | Hold open track or hold open clip (single lever) | Hold open comes from the track or the cylinder assembly; a clip located in the track provides it. |
| 4010 and 4011 | 4010-3049 hold open arm (H) | Handed, hold open adjustable at the elbow. The 4011 is adjustable from size 1 to 5. |
| 4110 and 4111 | 4110-3049EDA hold open arm (H) | Handed, hold open adjustable at the shoe. The 4111 is adjustable from size 1 to 5. Push side templates list the 4111 through 4116. |
| SEM 7800, 4040SE, 2310ME, 4310ME, 4410ME, SEH | Electrically controlled hold open (fire and life safety series) | See the section on magnets and closer/holders below. |
Source LCN's 4000 Series catalog section, its general information catalog and its fire and life safety catalog section.
Which 4040XP arm is on the door?
On a 4040XP, the arm decides whether the closer can hold open. LCN defines its regular arm as a double lever, non hold open arm, and its hold open arm (H) as a double lever arm that provides a hold open function adjustable at the elbow or shoe. LCN lists some arms as handed, meaning made for a left-hand or a right-hand door, and others as non-handed.
LCN says the 4040XP with regular or hold open arm mounts hinge side or top jamb. Parallel arm mounting, with the arm running along the push side of the door, requires LCN's PA shoe for regular or hold open arms, and LCN adds the prefix P to the closer description (P4040XP).
| LCN part | LCN's name | What LCN lists |
|---|---|---|
| 4040XP-3077 | Regular Arm (REGARM) | Non-handed. Mounts pull side or top jamb with shallow reveal. |
| 4040XP-3049 | Hold Open Arm (H) | Non-handed. Mounts pull side or top jamb with shallow reveal, hold open adjustable shoe. 4040XP-62PA shoe required for parallel arm mounting. |
| 4040XP-3049L | Hold Open Long Arm (HLONG) | Non-handed. Includes long head and tube, 4040XP-3048L, for top jamb mount. |
| 4040XP-3049EDA | Hold Open Extra Duty Arm (HEDA) | Handed. Hold open function is adjusted at the shoe. |
| 4040XP-3049EDA/62G | Hold Open Extra Duty Arm with 62G Thick Hub Shoe (HEDA62G) | Handed. 62G shoe provides additional blade stop clearance; hold open function is adjusted at the shoe. |
| 4040XP-3049CNS | Hold Open Cush-n-Stop Arm (HCUSH) | Non-handed. Hold open function with templated stop/hold open points. Handle controls hold open function. |
| 4040XP-3049SCNS | Spring Hold Open Cush-n-Stop Arm (SHCUSH) | Non-handed. Spring loaded stop in the soffit shoe. Handle controls hold open function. |
Source LCN's 4000 Series catalog section and its general information catalog.
What angle will it hold open at?
LCN gives the hold open range separately for each mounting and arm, and some of its installation instructions print a hold-open range on the arm drawings. The 4010 Series hold-open arm comes from LCN preset to hold open at 90°.
| Closer and mounting | Hold open points as LCN lists them | Where LCN lists it |
|---|---|---|
| 4040XP, hinge (pull) side | Templating allows up to 120°; hold open points 90° up to 120° with the hold open arm | 4000 Series catalog; the 4040XP/4041DA instructions label the arm "Hold-Open (90°-120°)" |
| 4040XP, top jamb (push) side | Hold open points 85° up to 120° with the hold open arm | 4000 Series catalog |
| 4040XP, parallel arm (push) side | 180° opening/hold open points with all except CUSH arms; 110° opening/hold open with CUSH arms | 4000 Series catalog |
| 4040XP with HEDA arm | Hold open points up to maximum opening; push side templates marked "HOLD OPEN MAX. 180°" | 4000 Series catalog; 4040XP/4041DA EDA instructions |
| 4040XP with CUSH arms | Can be templated for an opening/hold open point at 85°, 90°, 100° or 110°; hold open at the templated stop points | 4000 Series catalog |
| 4010/4011, pull side, hold-open arm | "HOLD-OPEN (90°-140°)"; arm preset to hold open at 90° | 4010 Series instructions |
Source LCN's 4000 Series catalog section and the 4040XP/4041DA, 4040XP/4041DA EDA and 4010 Series installation instructions.
Does a hold-open closer need a door stop?
An auxiliary stop is a stop that limits how far the door swings. For 4040XP hinge side and top jamb mounting, LCN recommends an auxiliary stop at the hold open point or where a door cannot swing beyond 120°. The EDA sheet prints "AUXILIARY STOP RECOMMENDED" on its push side templates, and the 4010 Series sheet recommends one at maximum opening or maximum hold-open.
LCN's general information catalog says to use a mechanical stop when a door cannot swing 180° or at the selected hold open point of a double lever arm system, and that it can be mounted on the floor, wall, overhead, or built into the closer arm. On the 4040XPT, LCN says the track bumper is not intended to replace an auxiliary stop.
Source LCN's 4000 Series catalog section, its general information catalog and the 4040XP/4041DA EDA and 4010 Series installation instructions.
Hold open on a 4040XPT track closer
On single lever arm systems, LCN says the hold open function is provided by either the track or the cylinder assembly. A hold open clip, located in the track, provides the hold open function for single lever arms.
LCN's 4040XPT mounting pages list variable hold open angles with infinite options. The track installation instructions show a hold-open option with two settings, light hold-open force and strong hold-open force. Page 1 of that sheet carries the note "Hold open tracks must not be installed on fire rated doors."
| LCN part | LCN's name | What LCN lists |
|---|---|---|
| 4040XPT-3038 | Standard Track (STDTRK) | Non hold open; will accept a hold open clip. |
| 4040XPT-3038H | Hold Open Track (H) | Supplied with the hold open clip installed. |
| 4040XPT-3054 | Hold Open Clip | Mounts in the track; hold open point controlled by clip location. Requires the 4040XPT-3034H hold open track roller. |
Source LCN's general information catalog, its 4000 Series catalog section and the 4040XP Track installation instructions.
Can a hold-open closer go on a fire door?
LCN's instruction sheets carry a note on hold open arms and fire rated doors. Three of them say "hold open arms must not be installed on fire rated doors": the parallel arm page of the 4040XP/4041DA sheet, the 4010 Series sheet and the 4110 Series sheet. The pull side and top jamb pages of the same 4040XP sheet print the note as "fire treated doors."
LCN's 4000 Series catalog says the series is "UL listed for self-closing doors without hold open" under swinging door closers (GVEV), file R1943.
LCN's guide specification for fire-rated openings includes the bracketed option "Manual Hold Open Arm function not allowed." It calls for hardware tested and listed by UL for the types and sizes of doors required, complying with the requirements of door and frame labels.
LCN defines its fusible link arm (FL) as one that releases the hold open function when exposed to high temperatures, with 135°F and 165°F available. The fusible link arms the catalog lists for the 4010 and 4110 release above 165°F.
For fire door labels and ratings, see fire-rated door requirements.
Source The 4040XP/4041DA, 4010 Series and 4110 Series installation instructions, LCN's 4000 Series catalog section and its general information catalog.
LCN magnets and closer/holders with electric hold open
LCN's fire and life safety series are "heavy duty closers/holders with electrically controlled hold open functions to control fire and smoke barrier doors." LCN uses Sentronic as a general term for these fire and life safety products.
LCN lists these features for its Sentronic closer/holders: each functions as a full rack and pinion door closer when hold open is not engaged or current is interrupted, and can be pushed safely and easily out of hold open. They work with ionization, photoelectric and heat sensing detectors supplied by others.
LCN's guide specification for combination closers and holders calls for units that hold the door open under normal usage and release and automatically close it under fire conditions, with a holder designed for use with UL listed fire detectors. LCN recommends quarterly inspections.
| LCN product | What | As LCN lists it |
|---|---|---|
| SEM 7800 magnets | Voltage and holding force | Tri-voltage design with 35 lbs. of holding force |
| SEM 7800 magnets | Current draw | 30 mA max at 12V DC; 20 mA max at 24V AC/DC; 20 mA max at 120V AC |
| 4040SE | Hold open points | Between 85° and 110° in approximately 3° increments |
| 2310ME, 4310ME, 4410ME | Hold open points | Infinite, from 0° up to maximum opening; optional hold open bypass at either 80° or 140° |
| Sentronic closer/holders | UL category and file | Fire Doors (GSNV) and Combination Door Closers and Holders (GTIS), file R7050 |
| SEM 7800 magnets | UL category and file | Door Holders (GTPR), file R8327 |
SEM 7800 Series magnetic door holders
SEM stands for single-point electronic magnet. LCN says the magnets are fail safe and hold until the current is interrupted, and a manual door closer is used to control and close the door. Floor, recessed wall and surface mounted wall magnets are available.
4040SE single point closer/holder
LCN defines SE as electrically controlled hold open using a special track and single lever arm. The 4040SE provides single point hold open for fire and smoke barrier doors.
ME multi-point closer/holders
LCN lists three multi-point ME closer/holders, with infinite hold open points. They can be ordered with a hold open bypass option, which does not allow hold open to take effect until the door is opened beyond the selected degree of bypass.
SEH holder
The SEH is a holder that must be installed in conjunction with an opposite side mounted, UL listed door closer. LCN says the door is held open until current interruption releases the holding mechanism and the door closes.
Source LCN's fire and life safety catalog section and its general information catalog.
Service for an LCN closer
Elwin Security installs, repairs and replaces LCN door closers and hold-open hardware as part of its commercial door closer and exit device service for commercial and multifamily properties in the San Francisco Bay Area. Calls are answered 8:00 AM-8:00 PM daily at (408) 539-0535.
If the closer slams, leaks or will not latch, see commercial door closer repair, adjustment or replacement.
Questions about LCN closers
LCN hold-open closer questions
Does an LCN 4040XP hold the door open?
Yes, with one of LCN's hold open arms, such as the hold open arm (H), or on the track version with a hold open track or clip. LCN defines its regular arm as a double lever, non hold open arm.
What angle does an LCN 4040XP hold open at?
LCN lists hold open points from 90° up to 120° in hinge (pull) side mounting and from 85° up to 120° in top jamb mounting with the hold open arm. In parallel arm mounting LCN lists 180° opening/hold open points with all except CUSH arms.
What hold-open point does an LCN 4010 hold open arm come with?
LCN's 4010 Series instructions say the arm is preset to hold open at 90° and label the arm "HOLD-OPEN (90°-140°)". If a door's hold-open point seems wrong, the next step is a service call, not a changed setting.
Can an LCN hold open arm go on a fire door?
LCN's 4040XP, 4010 and 4110 instruction sheets carry a note that hold open arms must not be installed on fire rated doors, and its track sheet says the same of hold open tracks. For fire and smoke barrier doors, LCN makes electrically controlled holders such as its SEM magnets, which hold until the current is interrupted.
Sources and further reading
These sources back up the general guidance. Your building and the people who approve the work decide the details for your doors.
- LCN (Allegion): 4000 Series Surface Mounted Closers Catalog Section (009509, Rev. 7/26)
- LCN (Allegion): Door Controls General Information Catalog (009514, Rev. 05/26)
- LCN (Allegion): Fire and Life Safety Closers and Holders Catalog Section (009513, Rev. 12/25)
- LCN (Allegion): 4040XP/4041DA Surface Mounted Closer Installation Instructions (73182, Rev. 05/22)
- LCN (Allegion): 4040XP/4041DA EDA Installation Instructions (28267, Rev. 04/17)
- LCN (Allegion): 4040XP Track Installation Instructions (28268, Rev. 12/20)
- LCN (Allegion): 4010 Series Installation Instructions (28475, Rev. 04/22)
- LCN (Allegion): 4110 Series Installation Instructions (28479, Rev. 04/20)