BreatheSafe RS 20 Compliant Dual HEPA System Installation Guide
- June 13, 2024
- BreatheSafe
Table of Contents
GENERIC INSTALL GUIDE
RS 20 COMPLIANT DUAL HEPA
Controlled Document: M0021
Issue Date: 25/10/22
Revision: 2
RS 20 Compliant Dual HEPA System
Installation Instructions
This is a generic guide referencing fitment of the Dual HEPA system. Some
fabrication of metal components may be required to adapt the kit in certain
applications.
Ensure all OEM glass / panels are
in place & door seals are in good condition.
Cabin needs to be clean & HEPA vacuumed prior to install. 
If applicable remove seat & internal panels to access potential
air leakage points / run any wiring looms.
Remove OEM Fresh air filter or pressuriser & discard. 
Apply sealing measures to accessible leak points & open glands.
E.g., adhesive foam tape. 
Remove OEM recirculation filter
cover 
Discard OEM filter assy.
Remove fresh air flap entirely (if
fitted).
Sikaflex new BreatheSafe HEPA
return air backing plate into place.
Modification required in certain applications. 
Secure filter & grille using knob.
(Use masking take to hold in place temporarily while sealant
sets).
Refit inner console assy. Ensure
all bolts are in place through floor to avoid leakage.
Solid mount controller in chosen suitable location by means of
bolting / fixing in place. 
As per examples.
Ensure easily visible & not obstructing operator controls.
Affix filtration unit in desired location taking
serviceability into account.
Custom mount plates may be required in certain applications.
BreatheSafe recommends not drilling any part of the cabin structure. 
Secure ducting with brackets, stauff clamps.
Manufacture/ adapt as necessary. 
Ensure filter can be removed & system is easily accessible for servicing.
Filtration unit must be correct orientation.
Locate the OEM
fresh air filter inlet. 
Remove cover & discard OEM filter.
Fit an inlet spigot or custom duct
to introduce the HEPA filtered air into the HVAC.
Example of ducting into OEM 3-inch fresh air inlet.
Some engineering may be required.
Follow pressuriser wiring connections as per the diagram. Upgrade the OEM pressuriser circuit fuse & use existing pressuriser circuit to power the BreatheSafe system.
Where necessary supply a new circuit. 25A fused supply live from ignition ensuring correct voltage.
Pipe A pressure sense port to route to atmosphere (outside of cabin). Face
external end downward to avoid dust blocking the tube.
*Based on touch screen controller. 
Carrying out a successful commissioning procedure:
Begin full speed test mode as per below instruction.
Use hands to feel externally of the cabin to detect pressure leaks and apply
seal measures until 250 pascals positive cabin pressure result is achieved or
exceeded.
The system will not work efficiently if the cabin sealing process is not
delivered correctly and not covered by warranty. 
Press Settings icon
Press System Check box
Record / photograph the cabin
efficiency result (Max Fan)
Complete commissioning form online. Commissioning Form (breathe-
safe.com)
COMMISSIONING PRESSURISED CABINS WITH BREATHESAFE INPRESS UNITS FITTED
The below instructions give a general guide to cabin sealing, testing and commissioning BreatheSafe variable speed pressurisation units (Clean cabin with HEPA vacuum).
- Inspect the cabin and ensure all cover panels are in place and any holes are sealed with grommets, sealer, fit new door seals for used equipment, etc.
- Sitting inside the cabin with the door open, turn on the ignition to power up the unit.
- The pressuriser fan should power up to full speed, and the monitor should indicate 0 pressure (Allow ± 2 pascals wind gusts).
- With the ignition on, close all doors and windows. If the cabin is adequately sealed, the monitor should indicate the set pressure of approximately 50 Pa (Pascals), or whichever pre-set has been chosen.
- Once a pressure of approximately 50 Pa is confirmed, hold down the arrow button for approximately 10 seconds to run the fan speed at max speed. The display will indicate “MAX FAN SPEED” before showing the maximum cabin pressure.
- INPRESS TL with Auto Pressure Control (5400 RPM) the cabin pressure should be above 250 Pa (the minimum is 250 pascals tested with a new TLF700EN HEPA filter). A result of 500 pascals is ideal.
- If the above pressure is not achieved, leave the unit on full speed, and investigate for external leaks outside the cabin e.g., A/C outlets, drains, window & door seals, locks & hinges, etc.
- If necessary, with the ignition on, controller on “MAX FAN SPEED”, A/C blower OFF and all doors and windows closed, set off a smoke emitter inside the cabin (SWP attached).
- Locate any air leaks around the cabin and re-test. If silicone sealant or similar is used, allow it to dry before retesting, as even slamming the door could push the seal back out.
- Continue the sealing and testing procedure as above until a satisfactory outcome is achieved.
Fill out the record below and attach photo evidence of maximum pressure result
and NANOZEN Real-time Dust Monitoring result to register for warranty.
PRESSURISER INSTALLATION RECORD 
Generic Install Guide RS 20 Compliant Dual HEPA
62 Mica Street Carole Park, QLD 4300
169 Chisholm Crescent Kewdale, WA 6105
+610732767833
sales@breathe-safe.com
www.breathe-safe.com.au
References
- BreatheSafe - Intelligent HEPA H14 Cabin Air Filtration
- Home - Safe Software
- BreatheSafe - Intelligent HEPA H14 Cabin Air Filtration