Products - Natural Convection Humid Environment
Product Specifications

Natural Convection Humid Environment
Similar to the FRK with structural changes to the trench heater components (Casing, grille & heat exchanger). They have been modified to allow for longevity in corrosive or humid environments such as natatoriums.



Natural Convection Humid Environment
Features
Performance
- Up to 2 tons
- ESP up to 0.25″ in.wg
- 50 t0 800 CFM
- Tested sound data available
Dimensions
- Height = 7.8″
Dowloads
Click to download PDF
Common Applications
Natural Convection Humid Environment
Polar by Siwa’s PDWA fan coil is designed as a supplementary source of cooling + heating capacities at static pressures below 0.25″. They are cost-effective & easy to install.
Being extremely quiet (tested sound data), having thin profile(7.8″) with ducted capabilities, these units are ideal for hideaway ceiling concealed installations especially in buildings with tight ceiling heights. Perfect choice for retrofits and new builds.
PDWA fan coils advantages :
- 300 psi operating pressure. Tested to 500 psi.
- Low profile
- Customization ability
- Control versatility (BMS or standalone)
- High CFM
- Easy to install and duct
- Suitable for low water temperatures during heating
Add on options:
- Standalone control systems with thermostats
- Valves
- MERV 8 filters
- Stainless steel drain pans
- Sound insulation
- Thermostats

Batavia Place - Condo
SIWA References
This condo project features Polar air‘s low-profile, ducted 2-pipe fan coils (PDWAs), selected for their efficiency and compact design to meet the building’s heating and cooling needs.
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