Cooling incoming air for the mvhr

[Russell griffiths]

 

I’ve got a pre heater fitted on my mvhr ducting on the fresh incoming air, I’ve decided to run cool water through it from the cool water that’s going through the floor, it’s dropped the incoming air temp by 10 degrees. 
 

what’s your opinion 

worth doing ?

should I ramp the mvhr to push the air around quicker 

or is it a bit pointless as mvhr moves so little air about I’m wasting my time. 
 

thoughts people. 

[JohnMo]

I would consider it generally rubbish due to low flow rates for cooling. 

 

However you can look at a different way as a dehumidifier to the incoming air. This will actively reduce house humidity and allow more margin from dew point for UFH (cooling), so you can run it cooler with no dew point issues.

[JohnMo]

You most likely start making water at the heat exchanger, so will need to add some form of drain.

[Russell griffiths]

48 minutes ago, JohnMo said:

You most likely start making water at the heat exchanger, so will need to add some form of drain.

Ah you think we might get condensation inside the heater box thing. .?

[Nickfromwales]

1 hour ago, Russell griffiths said:

Ah you think we might get condensation inside the heater box thing. .?

Is it only a heater or a heater/cooler? The latter will come with a condensate drain connection, the heater won’t. 

[JohnMo]

1 hour ago, Russell griffiths said:

Ah you think we might get condensation inside the heater box thing. .?

Good chance, you may need to put a slight angle to get water to drip where you want it too.  A normal heat/cool one has a drip tray to manage this

[Russell griffiths]

47 minutes ago, Nickfromwales said:

Is it only a heater or a heater/cooler? The latter will come with a condensate drain connection, the heater won’t. 

No drain on it just a simple pop riveted box. 

[Nickfromwales]

1 hour ago, Russell griffiths said:

No drain on it just a simple pop riveted box. 

You'll need to add one, or stay away from the dew point.