Description
HONEYWELL 10″ ROUND TRUEZONE BYPASS DAMPER
The TrueZONE Bypass constant pressure regulating damper (CPRD) is a round static pressure relief damper. It is used in forced-air bypass applications to relieve excess static pressure when some of the zone dampers are closed. The damper is installed in a duct that delivers air to the return or a dump zone. The damper automatically opens and closes to maintain a desired static pressure.
Features
- Simplify zoning with bypass design
- Constant pressure relief no matter the blower speed
- Simple to install in any orientation
- Easy to set crack pressure, no more fiddling with weights
- Quick release regulator for easier installs and replacements
The CPRD uses a calibrated spring to regulate the bypass air accurately when any number or combination of zones is calling. Conventional, weighted arm, bypass dampers may operate properly when one zone is calling; however, when different combinations of zones are calling, they bypass too much or too little. This can cause callbacks when homeowners complain of air noise.
CPRD Damper Sizing
| Bypass Damper | Replacement Regulator | Maximum Airflow |
| CPRD8 | CPR8 | 600 CFM |
| CPRD10 | CPR10 | 1000 CFM |
| CPRD12 | CPR12 | 1400 CFM |
| CPRD14 | CPR14 | 1700 CFM |
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