500 Door Blower Door Retrotec Fan User Guide
- October 30, 2023
- retrotec
Table of Contents
rev 2022-02-08
Retrotec’s Model 540 & 550 QuickGuide
- gauge case
- DM32 gauge
- DucTester
- System case
- Range plugs
Umbilical Extra Tubing & Tubing Accessory Kit
Flex Duct Depressurization Kit
Commercial DucTester Setup
(1) Prepare the gauge, first time only
Home Screen must show Model 540 or 550 on Range 47.
- Channel A
- Channel B
If not, tap the device icon, then
Tap until “Retrotec DucTester” appears.
Tap then tap
If units on Channel A and B are NOT correct
-Tap [Settings] > [Results to be displayed]
-Tap [Pressure:] to change pressure
-Tap [Flow:] or [Flow/Area] to change flow units
-Tap to return Home
If time average is NOT “5 s avg”
-Tap [Settings] > [Time Averaging] “5 seconds”
-Tap to return Home
www.retrotec.com | Support: (888) 330-1345 | International: +31 (0) 522 282941 |
(2) Prepare the ducts
Ensure sealing is complete
Blank off ductwork
(3) Connect Flex to ducts
Attach 6″ (100mm) Flex to ductwork
Install Range 47 Flow Plug
(4) Connect Flex to Fan
Connect Flex Duct to fan outlet for pressurization
-
airflow
Outlet -
Inlet
with Range Plugs
On Model 550 you can depressurize ducts by attaching the Adapter onto Fan inlet and attaching the Flex to it
- Flex connects here
- Flex duct adapter
- Inlet with Flow Plug
(5) Connect tubes & controls
Connect yellow and green tubes between DucTester and gauge
Plug in Speed Control Cable between DucTester and Gauge
Connect blue tube to gauge and to ducts using static probe or connection on flange
Plug in power source
(6) Prepare Gauge for the test
Tap [Settings] > > [Default Pressure] and enter Test Pressure. Tap to return Home.
If your flow units include area, tap [Area] , then use number pad to enter and tap [Set]
(7) Run the test
WARNING! Test pressures may exceed 20 in WC (5000 Pa). Start slowly!
[Set Speed] to 1% the Jog up to the Test Pressure
Tap “@” on the display and “Flow at Test” Pressure will appear
Jog fan speed up but do not exceed the Pressure Class
Read results from the Gauge
Connect Gauge to a laptop and have FanTestic run the test according to any Standard,
Visit retrotec.com/software.html to download
(8) Test Passes
Complete test reports
Remove temporary seals
Desired results not achieved?
Flow in [Channel B] reads “–” or “+ +” at test pressure?
If the test pressure has been reached, but “–” appears, the fan is running
too slowly to accurately measure flow (flow pressure below minimum).
– Switch to a lower Range Plug
If the test pressure has been reached, but “+ +” appears, the fan is running
too quickly to accurately measure flow (flow pressure above maximum).
Make sure to:
– Change [Range] on DM32 to match
– Re-adjust fan speed
Cannot achieve test pressure at full speed?
If fan reaches 100% speed before reaching test pressure:
– Change to a higher Range Plug and try again.
– Change [Range] on the gauge to match.
– Check seals on all registers. Look for disconnected ducts or ducts open to
outdoors
Field check gauge weekly
Check gauge operation and check for blocked, leaking or pinched tubes weekly, and anytime results are in question. This will eliminate a common source of error
To perform the gauge check, you will need the gauge and Umbilical
Set [Time Average] to 5 seconds in [Settings].
Tap [Channel B] and select “Pressure: Pa”.
Conned the yellow tube between the red and yellow ports.
If readings on Channel A and Channel B are within 2% and don’t drop rapidly, the tube is not blocked or leaking and the gauge is correct.
Repeat between different ports with each of the tubes you use for testing.
Get the results you need
Tap the [Channel B] key to select a different Result, or tap the [Result to be displayed] key on the [Settings] menu.
Flow: CFM (m3/h) – Flow at the induced pressure is the simplest result
*Flow/Area: CFM/100 sq ft (m3/(hm2) or m3/(sm2) or liters/(sm2))** – Flow in CFM per 100 square feet (or m3/(h·m2) may be required. Requires an area to be entered.
When a Result is chosen that requires an area, [Area] will be shown on the Home screen. Tap it to enter the area.
The area can also be changed from the [Settings] menu.
Use smaller Range number for tighter ducts, and larger number for leakier ducts.
Tap on the gauge and select the range to match your fan, whenever a Range Plug is changed.
Additional troubleshooting
Visit www.retrotec.com/support for more support options such as FAQ Webinars, Manuals, Tech Support, and Repairs.