Test port location recommendations + other suggestions

[disruptoergosum]

New poster.

This is a RedZone HVS 600. Where would one suggest creating a test port for a static probe on this unit given the compact configuration?


Heating coil sits above. Cooling coil to the right with return air. One can see a deflector plate of sort. The acoustic insulation I've found soaked on several occasions. Any suggestions here?

[Admin]

Those systems can use a standard square plenum so I'm not sure why they didn't put the air conditioner coil above the air handler in the supply plenum.

Regardless they should have installed an anti-ice control or freeze stat, so I assume your AC coil is not icing up.

It's possible the air conditioner coil is too close to the blower fan which is pulling the moisture off of it.  Sometimes installing an air vent in the air conditioner coil drain line can help with this problem.  I have seen the pan overflow because the airflow is causing a vacuum so installing the air vent will break that vacuum and allow the coil to drain properly.

You could drill test holes into the ductwork above the heating coil and before and after the air conditioning coil.

I think those systems can be used as low or mid velocity.

[Admin]

I just saw the pictures and see why the air conditioner coil was installed on the return side.  Have you seen any signs of ice on the coil lineset or outside?

[disruptoergosum]

I just saw the pictures and see why the air conditioner coil was installed on the return side.  Have you seen any signs of ice on the coil lineset or outside?

No. Have not seen any water originating from the heating coil as well.

There is a hole on the supply duct above; but nothing in the unit.

Yes it is a high velocity system. Unit supplies 670 CFM at 1.2 in.w.c. external static pressure. Test port in supply duct above the heating coil measures 0.78 in.w.c.

Would you also consider one on the front panel there parallel from the return?

[disruptoergosum]

One can see the compact installation here. On the return side it's a 10in x 20in square duct. To it's right of the return duct there is may 5 inches of gap between the wall and the duct... no ability to drill here or sample. It would have to be on the 10 in side along with 5 holes here for velocity measurements + a long pitot that can reach full length.

https://app.box.com/s/11zvo7mjuf9upmeq9esr8lijy0odnn3f