Print Page - Vanee 200H connection to Viessmann Airflow Plus air handler AH2A-354

Title: Vanee 200H connection to Viessmann Airflow Plus air handler AH2A-354
Post by: garyparsons on September 14, 2021, 09:56:41 AM

Hello Forum,

Please disregard my last post. I am planning to connect a Vanee 200 H, HRV system to my Viessmann air handler AH2A-354. I would like the HRV unit to start at the maximum flow rate when the blower at the Viessmann air handler starts. And the HRV unit stops with the Viessmann blower stops. I have a nest thermostat that is currently connected to the air handler. Could you please guide me to what terminals (wires) are to be connected from my air handler to the HRV unit? Thanks a lot for your help. Please see attached the installation manuals and a picture of the air handler controller.

Title: Re: Vanee 200H connection to Viessmann Airflow Plus air handler AH2A-354
Post by: samihabib on September 14, 2021, 11:44:43 AM

You connect the HRV to G and R so when t stat turns on blower will give 24V to hrv to run

Title: Re: Vanee 200H connection to Viessmann Airflow Plus air handler AH2A-354
Post by: garyparsons on September 14, 2021, 11:48:58 AM

Thanks Sam I connected air handler G & R to HRV NO & C. It didn't work.

www.hvactechgroup.com - forums

HVAC Forums => HVAC Help => Topic started by: garyparsons on September 14, 2021, 09:56:41 AM