Install Zone Dampers - Bryant ZONE PERFECT TWO-ZONE Installation Instructions Manual

II. WIRING
WARNING: To prevent personal injury or possible
equipment damage, disconnect the power supply before
routing wire.
All wiring must comply with local, state, and national codes.
NOTE: Use No. 18 AWG color-coded, insulated (35°C min)
wire. If thermostats are to be located more than 100 ft from the
Zone Perfect Two-Zone Center as measured along the control
voltage wires, use 16 AWG colored-coded wires to avoid exces-
sive voltage drop. All wiring is run back to the Zone Perfect
Two-Zone Center.
III. INSTALL ZONE PERFECT TWO-ZONE
→
NOTE: Zone Perfect Two-Zone is approved for indoor use only
and should never be installed with any of its components exposed
to the elements. Do not mount Zone Perfect Two-Zone Center
where it will be accessible to children. Do not locate the center in
areas of the home that are noise sensitive since relays are energized
and de-energized during operation and may be an annoyance.
Install Zone Perfect Two-Zone in an area with a temperature range
between 32°F and 150°F.
Install Zone Perfect Two-Zone center in a vertical position. Locate
in an area that is easily accessible in case servicing should be
required.
CAUTION: To prevent possible damage to the Zone
Perfect Two-Zone Center, do not mount on plenum,
ductwork, or flush against furnace.
IV. INSTALL ZONE DAMPERS
IMPORTANT: If conditions exist for possible condensing, the
motor must be positioned for adequate draining. (See Fig. 2.)
NOTE: If a multi-damper enabler is used to link dampers
together, then add 5va per damper to the transformer power supply
rating. Reference multi-damper enabler Installation Instructions.
Zone dampers may be installed in any direction.
Install dampers so the actuator is visible for inspection and
accessible in the event it would ever need service. The black mark
on the end of the damper shaft represents the position of the
damper blade.
DAMPER
ACTUATOR
Fig. 2—Damper Motor Positioning
NOTE: Insulate damper using 1-1/2 in. insulation (check local
codes). In areas where excessive condensing may occur, carefully
insulate over the actuator assembly. Make sure insulation does not
interfere with operation of actuator.
MOUNTING
BRACKET
A95128
—2—
Before insulating the ductwork, check for proper damper opera-
tion. Apply 24vac between COM and OPN to open the damper and
COM and CLS to close the damper. (See Fig. 3.) The damper will
modulate counter-clockwise to open and clockwise to close.
MOUNTING
HUB
ACTUATOR
HOUSING
QUICK BLADE
RELEASE
BUTTON
(RED)
FIELD
INSTALLED
POWER WIRING
Fig. 3—Damper 24-vac Connections
If in an emergency it becomes necessary to force a damper open
manually, press in red quick blade release button with 1 hand and
turn mounting hub to reposition the damper shaft. Release button
to hold damper shaft in the new position.
To avoid noise and vibration, do not hard mount dampers to any
solid structure such as joists.
A. Round Metal Ductwork
IMPORTANT: If application exists with all metal ductwork
without insulation, flex connectors should be used on each end of
the zone dampers to avoid noise and vibration.
1. Crimp end of branch duct.
2. Slip end of flex connector over zone damper and use
self-tapping sheet metal screw to secure. (See Fig. 4.)
SUPPLY FLEX
CONNECTOR
Fig. 4—Round Metal Ductwork
3. Properly seal joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with actuator.
4. Insulate damper using 1-1/2-in. to 2-in. insulation. (Check
your local codes.) (See Fig. 5.)
NOTE: All zone dampers and ductwork must be properly sup-
ported according to local codes or SMACNA standards.
B. Rectangular Metal Ductwork
1. Make connections using S-lock and drives. (See Fig. 6.)
2. Properly seal joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with actuator.
POSITION
INDICATOR
ANGULAR
ROTATION
STOPS
MOUNTING
BRACKET
A95096
ZONE DAMPER
A95129