TXV Application Sporlan OVE-15-GA

[gravity]

haha...good ol' microsoft paint

[tomnkc]

Really?

A check valve is a few bucks and easier to do then a TXV

Attachment 345321

normal flow would be from right to left in the cooling mode which uses the txv.

in heat the flow would be left to right and bypass the txv

Thank you, that is how I thought it would install but was not sure. I will use this info in the future. How should one size the check valve? Do you match inlet or outlet of the TEV?

[bunny]

If you choose to install the check valve, you'll need to add the auxiliary side connector to the refrigerant distributor. The reverse flow during the heating mode has to not only bypass the TEV but also the refrigerant distributor nozzle. The orifice in the nozzle is too small to allow the full mass flow of the system through it without an excessive amount of pressure drop.

The auxiliary side connector is essentially a tee, that allows you to move the nozzle from the distributor body to the ASC body, which then allows the refrigerant in reverse flow to enter between the nozzle and the distrbutor body, bypassing the nozzle.

Regarding sizing of the check valve....if it's a 5 ton system, you'll need a check valve capable of 5 tons of mass flow with a minimal pressure drop for the refrigerant in the system.

[coolerik]

If you choose to install the check valve, you'll need to add the auxiliary side connector to the refrigerant distributor. The reverse flow during the heating mode has to not only bypass the TEV but also the refrigerant distributor nozzle. The orifice in the nozzle is too small to allow the full mass flow of the system through it without an excessive amount of pressure drop.

The auxiliary side connector is essentially a tee, that allows you to move the nozzle from the distributor body to the ASC body, which then allows the refrigerant in reverse flow to enter between the nozzle and the distrbutor body, bypassing the nozzle.

Regarding sizing of the check valve....if it's a 5 ton system, you'll need a check valve capable of 5 tons of mass flow with a minimal pressure drop for the refrigerant in the system.

Duh... lol , just givin u a hard time bun, your right tho, no one mentioned that, good call