Bosch CA Series - Page 8

Installation, Operation, and Maintenance Manual
CA Series Heat Pumps - 8733851021 (2025/04) US
8 |
Operating Limits
Fluid Type Specication Cooling Heating
Air
Minimum ambient air temperature 50°F 40°F
Maximum ambient air temperature 100°F 85°F
Rated ambient air temperature 80°F 68°F
Minimum air coil entering air db/wb 65/57°F 45°F
Maximum air coil entering air db/wb 95/85°F 80°F
Rated air coil entering air db/wb 80/67°F 68/59°F
Liquid
Antifreeze Protection Required
— LWT <40°F
— EWT <50°F
Minimum water coil entering uid temperature 50°F
EXT 20°F
STD 50°F
Maximum water coil entering uid temperature 110°F 80°F
Rated water coil entering uid temperature
Water Loop 86°F 68°F
Ground Loop 77°F 32°F
Ground Water 59°F 50°F
Maximum operating water pressure Standard Unit 450psi/3,102kPA
Minimum operating water ow rate 1.5 GPM per ton
Note: Maximum and minimum operating limits may not be combined. Refer to Engineer Submittal Sheet on the product information page. (See the QR code in the
Troubleshooting section of the IOM).
Acronyms:
LWT: Leaving Water Temperature EXT: Extended Range application option
EWT: Entering Water Temperature STD: Standard application option
Table 1