What model should I get installed in my home?
For general ventilation, visit: https://www.renewaire.com/how-to-buy/home-ventilation-solutions/
For bathroom exhaust, we recommend 80 CFM for each full bath and 50 CFM for each half bath.
Check with local code to see if the requirements are different in your area.
What should I set my PTL/FM percentage timer to?
First step is to determine what CFM is recommended for your home. Use our calculator.
For EV90-300 units, take the CFM provided by the calculator and divide it by the number in the
model number and then multiply by 100. This is a good base value to keep your percentage time set to year-round. When more ventilation is desired, feel free to increase that value.
Example: For a home with 2400 square feet, 3 bedrooms and an EV130 installed, the calculator says
102 CFM is recommended for the space. (102/130)*100 = 78.46%. So, it’s recommended to set the
percentage timer to 80%.
Where can a residential ERV be installed inside a home?
Our ERVs are internally insulated so they can be installed anywhere in a home, such as a closet, the
basement, the unconditioned crawl space and even the attic. Our residential ERVs cannot be installed where they are exposed to the elements of the outdoors.
What duct size do I run?
Most of our residential duct adaptors are designed for either 6” or 8” ducts. Short duct runs (up to 25’) should work well with 6” while longer runs or higher
CFMs should use 8”. Guidance can be found in the owner’s manual. When in doubt, check with your local HVAC professional.
Test Conditions 1125 CFM, .75″ ESP
Test Conditions 2250 CFM, 1.0″ ESP
Test Conditions 3375 CFM, 1.25″ ESP
How do I get the IP address to stick in this Carel controller?
Note: In control versions 3.x and higher this can be done in the general settings menu.
Press and hold the Alarm and Enter buttons on the Carel controller to bring up the hidden menu. The second option should be Settings. If not, press Escape once. Go to settings and then TCP/IPv4 Settings. Set the IP address and then cycle power to the unit.
What is the ABB VFD error, 2021?
The 2021 fault is indicating that the drive has not received an enable signal. The most common reason for this is when the factory installed damper has not achieved its end switch, or the unit has not been provided with an enable.
Why is the variable speed not working with this ECM ERV?
In the electrical box, my unit has:
• a green control board. Make sure the yellow VAR wire is connected to the black COM wire.
• one 10 pin grey terminal block. Make sure there is a connection between terminals 3 and 4 when variable speed desired.
• two 8 pin grey terminal blocks. On the terminal block that has the blue factory wire on terminal 1, make sure there is connection between terminals 2 and 3
when variable speed is desired.
• If the unit has a Carel controller. Give us a call.
Where do I connect the BMS to this Carel controller for BACnet MSTP?
Above the display and to the left you’ll see “J10.” Behind that is “J3.” From the factory, a 6-wire cable is wired to J3 for a remote display but if you are using
BMS, you can remove it and wire your BMS there instead. When wiring, make sure you use the + and – connections and not the vterm, as you can damage the
How do I start up an ERV with commercial controls?
Watch our step-by-step start up video.
Can I Purchase Carel RUT Cables of Different Lengths?
The Carel RUT comes with a standard 5-foot cable, but you may need a longer cable for your application. The cord looks like a phone cord but actually has two wires swapped inside so standard phone cords do not work. If so, cables up to 150 feet are available but RenewAire does not carry them. To order visit: https://www.carelparts.com/.
Carel Part Numbers
You may find you need to connect to the four-pin connector directly instead of the jack. The wiring for the direct connection of the six-wire cable to the four-pin J3 connector is as follows:
Where can I view updated lead times?
Log into CORES at cores.renewaire.com. Lead times are on the last tab at the top of the website
once you are logged in. If you do not have an account with us, you will need to contact us for lead
My company has an account with RenewAire but I’m not sure where to submit orders to?
Orders from our sales channel can be submitted to RenewAireOrders@RenewAire.com. If you are not
sure if you have an account with us, please give us a call at (800) 627-4499. Select option 1 and then
option 1 again.
If I am a homeowner, where can I buy a filter for a RenewAire Unit?
You can contact a local HVAC contractor or purchase directly from one of these sites: