Bypass Dampers
TrueZONE Bypass Damper (CPRD)
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The TrueZONE® Bypass constant pressure regulating damper |
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(CPRD) is a round static pressure relief damper. It is used in |
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forced-air bypass applications to relieve excess static pressure |
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when some of the zone dampers are closed. |
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• Quick installation and setup |
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• No weight to adjust |
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• Can be installed in any orientation |
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• Engineered to provide constant system pressure regardless of |
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changes in zones celling or blower speed |
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Application: Constant Pressure Regulating (Bypass) Damper |
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Damper Type: Bypass |
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Shape: Round |
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Motor: Cal brated spring tension regulator |
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Size |
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Product Number |
in. |
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mm |
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Description |
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CPRD8/U |
8 in. Diameter |
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203 mm diameter |
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8 in. Round Constant Pressure Regulating Damper |
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CPRD10/U |
10 in. Diameter |
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254 mm diameter |
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10 in. Round Constant Pressure Regulating Damper |
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CPRD12/U |
12 in. Diameter |
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305 mm diameter |
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12 in. Round Constant Pressure Regulating Damper |
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CPRD14/U |
14 in. Diameter |
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356 mm diameter |
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14 in. Round Constant Pressure Regulating Damper |
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Replacement Regulator for CPRD |
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Product Number |
Application |
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Description |
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CPR8/U |
Replacement regulator for CPRD |
8 in. TrueZONE Bypass replacement regulator |
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CPR10/U |
Replacement regulator for CPRD |
10 in. TrueZONE Bypass replacement regulator |
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CPR12/U |
Replacement regulator for CPRD |
12 in. TrueZONE Bypass replacement regulator |
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CPR14/U |
Replacement regulator for CPRD |
14 in. TrueZONE Bypass replacement regulator |
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Static Pressure Regulating Damper (SPRD) |
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Single-blade, steel barometric damper used to bypass excess air |
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when majority of zone dampers are closed. |
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• Counter-balanced weighted arm to control bypass air for zoned |
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systems |
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• Air pressure in duct system increases as zone dampers close, |
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pushing the SPRD open automatically |
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• Arm and weight both adjustable to control amount of air bypassed |
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• Recommended for low pressure systems with less than 0.5 in. wc |
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• For larger systems and tighter pressure control, use MARD damper |
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and static pressure controller (SPC) |
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• Additional weights available |
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Application: Static Pressure Regulating Damper |
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Motor Type: Weighted damper arm |
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Product Number |
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Shape |
Size (in.) |
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Motor Type |
Used With |
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SPRD8/U |
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Round |
6 in. Diameter |
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Weighted damper arm |
Honeywell zoning systems |
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SPRD7/U |
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Round |
7 in. Diameter |
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Weighted damper arm |
Honeywell zoning systems |
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SPRD10/U |
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Round |
10 in. Diameter |
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Weighted damper arm |
Honeywell zoning systems |
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SPRD12/U |
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Round |
12 in. Diameter |
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Weighted damper arm |
Honeywell zoning systems |
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SPRD14/U |
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Round |
14 in. Diameter |
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Weighted damper arm |
Honeywell zoning systems |
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SPRD16/U |
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Round |
16 in. Diameter |
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Weighted damper arm |
Honeywell zoning systems |
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SPRD Damper Replacement Parts |
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Product Number |
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Description |
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32005688-001/U |
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SPRD Weight |
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32005981-003/U |
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SPRD Counterweight Assembly (includes, arm, coupling, and weight). Used with SPRD 6, 8,9 and SPRD12x8, 20x8, 12x10, and |
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20x10. |
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32005981-004/U |
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SPRD Counterweight Assembly (includes arm, coupling, and weight). Used with SPRD10, 12,14,16, and SPRD12x12 and 20x12. |
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44 |
customer.honeywell.com |
70-6910 |
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