Water Source Heat Pump - Mini Split?

[C317414]

Hello,

We have a condo unit in a tropical climate that has a ClimateMaster, 6-ton water source heat pump for cooling. The condenser cooling water comes from a chiller on the roof of the building, and is circulated to all the individual condos. The ClimateMaster unit has the heat pump, and air handler all in one. The cold air is distributed to the rooms through ducts. The system works well, but it is a bit loud and not zoned independently.

Does anyone make a water source heat pump that uses wall-mounted mini splits? In other words, are there any units that circulate refrigerant or chilled water to multiple, small air handlers? I've seen commercial units that seem to do this, but I do not know if they are adaptable to a residence.

 

[John Gayewski]

Ptac unit. It's that what your talking about? I think islandaire makes them.

 

[Sponsor]

 

[wwhitney]

In other words, are there any units that circulate refrigerant or chilled water to multiple, small air handlers?

Not sure about refrigerant loops (you would presumably need to get equipment for both ends of the loop from the same manufacturer), but if you have chilled water already, you certainly could circulate chilled water. Each air handler would have to have drainage available for the atmospheric condensate.

E.g. I'm working with some fan coils from this manufacturer: https://www.chiltrix.com/chiller-fan-coil.html First Co also makes some hydronic products, the fact they list them under "Commercial Chilled Water" is immaterial: https://firstco.com/products/

Cheers, Wayne

 

[Fitter30]

Residential systems don't think you find one. Water cooled commercial variable refrigerant flow (vrf) are made by several companies. These system are made for the commercial customer schools, office buildings and apartment buildings. Also take factory trained people for installation and servicing.

https://www.mitsubishielectric.com.au/city-multi-water-cooled-vrf.html
https://www.google.com/url?q=http:/...IQFnoECAUQAg&usg=AOvVaw0LfLRu2lQcsO7EvOxSwsTe

 

[C317414]

Thanks for the info. I'll talk to a commercial AC tech the next time that I'm down at the condo.

 

[BBCOND HVAC JOE]

Thanks for the info. I'll talk to a commercial AC tech the next time that I'm down at the condo.

SO you Can install electric dampers in the ductwork to a thermostat to zone each of the rooms, if the unit is making noise it needs a deep cleaning and prob needs to have the mounting brackets checked, you can install verticle (WSHP) water source heat pumps in each of the rooms if you can get the water supply from the chiller to each room https://islandaire.com/water-source-heat-pumps/product/ezeh/.
The other option is to insulate the area around the Current unit you have, you might also need to make the return vent larger, sometimes contractors make them to big or small for the SQ FT of the Cond.
I hope this helps!

Joseph


https://www.bbcond.com/denvers-best-heat-pump-installation/

 

[C317414]

SO you Can install electric dampers in the ductwork to a thermostat to zone each of the rooms, if the unit is making noise it needs a deep cleaning and prob needs to have the mounting brackets checked, you can install verticle (WSHP) water source heat pumps in each of the rooms if you can get the water supply from the chiller to each room https://islandaire.com/water-source-heat-pumps/product/ezeh/.
The other option is to insulate the area around the Current unit you have, you might also need to make the return vent larger, sometimes contractors make them to big or small for the SQ FT of the Cond.
I hope this helps!

Joseph


https://www.bbcond.com/denvers-best-heat-pump-installation/

Thanks for the info.

 

[Jadnashua]

If the ductwork at the external unit with the fans, etc. doesn't have a flexible strip, and is all hard metal, that can transmit a lot of vibrations into the ductwork.

Lining at least part of the duct closest to the air handler can make a difference, too.

 

[C317414]

If the ductwork at the external unit with the fans, etc. doesn't have a flexible strip, and is all hard metal, that can transmit a lot of vibrations into the ductwork.

Lining at least part of the duct closest to the air handler can make a difference, too.

Thanks. This is not the issue, since the ducts are made from insulated duct board.