Brochure

ZONING PRODUCTS CATALOG
70-0851—17 10
RETROFIT ROUND DAMPER (RRD)
Round damper slides into rigid round ductwork. Idea for retrofit zoning.
• RRD used as zone damper (not by-pass).
• Rigid round ducting only.
• Visual position indicator.
• 2.5 VA 90 second actuator.
•Range stops.
• Compatible with all Resideo zoning panels.
• Durable galvanized steel construction.
• Low leakage.
MODULATING AUTOMATIC ROUND DAMPER (MARD)
Single-blade modulating round damper.
• Uses 90-second open to closed actuator.
• Can be used as a zone damper or bypass damper. Bypass
damper needs SPC.
• When used with and SPC or zone panel, damper declutches
blade once it is full open or closed and actuator continues to
turn. This is normal.
• ML6161B2024 replacement actuator on page 12.
STATIC PRESSURE CONTROL (SPC)
CONSTANT PRESSURE REGULATING DAMPER (CPRD)
To determine how many CFM you need to by-pass:
Total system CFM – CFM of smallest zone = amount of CFM to
by-pass.
• Bypass damper designed to simplify zoning (4 sizes
available).
• Constant pressure relief no matter the blower speed
• Simple to install in any orientation
• Easy set crack pressure, no more fiddling with weights.
• Quick release regulator for easier installs and replacements.
CPR CONTROL FOR CPRD DAMPERS
The CPRD dampers ship with a CPR control. You only need to order a CPR
control separately as a replacement part.
• Used for modulating by-pass damper only.
• Operates from 0.1 to 4.0 in. wc with fixed differential.
• On pressure rise, modulates damper open; on pressure fall, modulates damper closed.
• Use with MARD for round ductwork or D2 and D3 Damper and ML6161B2024 Motor Actuator for
rectangular ductwork.
Used to sense supply air static pressure and control MARD to maintain a set system pressure.
Model Size
RRD5 5"
RRD6 6"
RRD7 7"
RRD8 8"
Model Size
CFM
(@ .25" WC
for by-pass)
MARD5 5" 110 CFM
MARD6 6" 170 CFM
MARD8 8" 360 CFM
MARD9 9" 500 CFM
MARD10 10" 700 CFM
Model Size CFM
CPRD8 8" 600
CPRD10 10" 1000
CPRD12 12" 1400
CPRD14 14" 1700-1900
Damper Control
CPRD8 CPR8
CPRD10 CPR10
CPRD12 CPR12
CPRD14 CPR14