Before I share today’s post, I’ve got two things to say…a) time flies, and b) sometimes things get lost in my giant pile.  Back in May, I wrote a post about mechanical and electrified dogging options for panic hardware.  One of our instructional designers, Janice Wheeler, sent me a fantastic addendum addressing some less-common but important and useful dogging applications for Von Duprin panic hardware.  I put Janice’s info “in a safe place” where it has patiently waited to be published.  Sorry, Janice!

At long last, here are some additional dogging options and considerations!

SD Special Dogging Option – When it is not feasible to incorporate a mechanical dogging feature in the usual location inside the device mechanism case, Von Duprin offers the SD option for the 98/99 Series rim and vertical latching configurations. The dogging components are in the center case (main chassis) of the device.

SD might be paired with delayed egress, electric latch retraction, or alarmed panic hardware, all of which have electronic components residing in the usual dogging location inside the mechanism case. In these scenarios, it may be desired to have mechanical dogging during certain hours of the day, but during other periods the electrified function is used.  Take care to avoid negatively impacting the access control system where security/lockdown is a concern – the system may show the hardware as (electrically) secure while it is (mechanically) dogged – leaving the door unlatched and unlocked.

RU Option – The Von Duprin RU option provides for wireless remote undogging of 33/35 and 98/99 Series panic hardware. This feature may be used for remote lockdown in emergency situations or for scheduled lockup such as at the end of school hours. Access control software is required.  This is a battery-operated solution and can be added to existing panic hardware as a modular kit.  A remote monitoring option (RM) can also be combined with the RU.

There is more info here:  Von Duprin Remote Undogging and Remote Monitoring.

ESL Option – The emergency secure lockdown option is used in conjunction with 33/35 and 98/99 Series QEL electric latch retraction devices and an access control system. Occupants can rotate a key or thumbturn on the ESL cylinder to interrupt power to the QEL motor. This allows the device to latch normally, thereby securing the opening in an emergency.

There is additional information about the ESL feature in this post:  Product Update: Von Duprin Emergency Secure Lockdown (ESL)

XP Devices – These high-security Von Duprin 98/99 Series rim devices have a unique latch bolt that does not retract when the device push pad is pushed or when the device is dogged. The dual-pivoting latch bolt does not release until the door begins to open. Dogging indicator options are especially desirable with this device since an extended latch bolt is not necessarily an indication that the device is in a secure, undogged state.

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Note:  Trim Matters!

It is important to choose correctly which pull-side trim function will be paired with panic hardware that will be mechanically or electrically dogged and undogged.  For most applications, the trim should be a pull only or a nightlatch function (key required for entry).

Installing an active lever trim that could be left in an unlocked state would override the control that the dogging/undogging action is intended to provide.

If you have questions about any of these options, feel free to leave them in the comments!

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