Description
The GeoStar Arbor Compact ZBV048 is a 4-ton vertical water source heat pump package unit for commercial, multifamily and hospitality buildings that run on a water loop, ground water or a closed ground loop. This R-410A model comes with a cupronickel water coil, a PSC blower motor and 208/230V single-phase power. This size is currently available in right return only.
Rated to AHRI/ASHRAE/ISO 13256-1 (AHRI Ref. #6501851), it delivers 47,200 BTU/h of cooling at 13.0 EER and 59,000 BTU/h of heating at 4.6 COP on a water loop. On ground water it reaches 19.8 EER and 4.0 COP, and on a closed ground loop 15.0 EER and 3.3 COP. Rated airflow is 1,600 CFM at 12 GPM water flow.
The cabinet measures 22.5" W x 26.2" D x 44.2" H, shorter than many competing units, so it fits tight mechanical closets in retrofit and new construction. A scroll compressor, Aurora Base microprocessor controls, an aluminum air coil and a corrosion-resistant drain pan come standard. Electrical requirements are 30.8 A minimum circuit ampacity with a 50 A maximum fuse or HACR breaker, and the water connections are 3/4" FPT.
This is R-410A equipment, a like-for-like replacement for buildings that already run R-410A water source heat pumps. Quantities are limited to current stock.
Key Features:
- R-410A Refrigerant: Matches existing R-410A water source heat pump systems for straightforward replacement.
- Cupronickel Water Coil: Better corrosion resistance than copper, recommended for open-loop and ground water applications.
- Water Loop, Ground Water and Ground Loop Ratings: 13.0 EER water loop, 19.8 EER ground water and 15.0 EER ground loop (ISO 13256-1).
- Compact Vertical Cabinet: 22.5" W x 26.2" D x 44.2" H footprint for closet and retrofit installs.
- Right Return Air: Configured for right return.
- Aurora Base Controls: Microprocessor control included on every model.
- PSC Blower Motor: 1,600 CFM rated airflow.
- Warranty: 5-year compressor and 18-month parts coverage for commercial use; registration required within 60 days of purchase.
Frequently Asked Questions
What refrigerant does the GeoStar ZBV048 use?
This model uses R-410A refrigerant. GeoStar also offers the Arbor Compact in R-454B as a separate model.
Can the ZBV048 be used for geothermal systems?
Yes. It carries ISO 13256-1 ratings for water loop, ground water (open loop) and ground loop (closed loop) applications, and its cupronickel coil suits open-loop well water.
What size breaker does the GeoStar ZBV048 need?
It needs a 50 A maximum fuse or HACR breaker on a 208/230V single-phase circuit, with a minimum circuit ampacity of 30.8 A.
What is the difference between left and right return?
It is the side of the cabinet where return air enters. Choose the configuration that lines up with your return duct so the unit installs without extra ductwork.
How much cooling does a 4-ton ZBV048 provide?
It delivers 47,200 BTU/h of cooling and 59,000 BTU/h of heating on a water loop at AHRI-rated conditions. Actual output varies with entering water temperature and flow.
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