2061 ZONE-AIR
Two-Wire DAMPER MOTOR
with Access-Mounting Plate
INSTALLATION INSTRUCTIONS
WHITE-RODGERS
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
TheType2061DamperMotorprovidesalow-costsystem damper motor which is installed on the duct work to each
of zoned temperature control for warm air heating. It is of room or zone.
the two-wire type, and is specially designed for use with
a two-wire thermostat with .2 Amp heat anticipator.
stalled on present systems for economical conversion to
This Damper Motor-Thermostat combination may be in-
Each room or zone requires one damper motor and one zone heating. It is ideally suited for split-level and ranch-
thermostat. The thermostat automatically controls the type homes having a warm air heating plant.
passage of warm air through the duct by operating the
PRECAUTIONS
Do not exceed the specification ratings.
CAUTION
!
All wiring must conform to local and national electrical
codes and ordinances.
To prevent electrical shock and/or equipment
damage, disconnect electric power to system, at
main fuse or circuit breaker box, until installation
is complete.
This control is a precision instrument, and should be
handled carefully. Rough handling or distorting compo-
nents could cause the control to malfunction.
Donotshortoutterminalsongasvalveorprimary
control to test. Short or incorrect wiring will burn
out heat anticipator and could cause personal
injury and/or property damage.
WARNING
!
Do not use on circuits exceeding 30 volts. Higher
voltage will damage control and could cause
shock or fire hazard.
SPECIFICATIONS
All guarantees are void if these specifications are Thermostat: Use two-wire thermostat with .2 Amp
exceeded.
anticipator.
Electrical Ratings: The Damper Motor draws .2 Amp
Max. at 25 VAC when in the open position.
Auxiliary Contacts: Do not exceed 2.0 Amp at 25
VAC (terminals 2 and 3).
Timings: From full close to full open - Approximately
45 seconds
From full open to full close - Approximately
60 seconds.
Maximum Duct Size: 300 square inches
NOTE
Maximum Duct Capacity: 1200 cubic feet per
minute.
The Damper Motor draws more than .2 Amp while it
is opening. For this reason, do not use more than the
recommended number of damper motors per trans-
former as shown on page 4.
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
PART NO. 37-1499B
Printed in U.S.A.
Replaces 37-1499
9516
ST. LOUIS, MISSOURI 63123-5398
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4. Use access-mounting plate as a template. Hold plate
against duct and mark the four hole locations for
attachingplatetoduct.Besureslottedholeincenter
of plate is over point “X” (Fig. 1) and that edge of
plate is parallel with edge of duct. Then drill the four
holes to take #10 sheet metal screws.
Access-
Mounting Plate
Motor
Damper
Shaft
5. Cutout4”x8”accessholethroughwhichdampervane
is to be installed. Access hole should be centrally
located between the four mounting holes.
Indicator
Wheel
#10 Sheet
Metal Screws
Wing Nut
Damper Vane
6. Attach indicator wheel to damper shaft with two 5-40
screws with lockwashers.
4” x 8”
Access Hole
7. Cut damper vane to duct size, allowing 1⁄8” minimum
clearance between duct and vane at all points. (If
required, snip notches in vane to clear protruding
sheet metal screws used to mount bearing plate.)
Access-Mounting
Plate
Damper Vane
Notches to clear
sheet metal
screws (if required)
Vane
Brackets
Indicator
Wheel
8. Attach vane brackets to locate damper shaft on exact
center line of damper vane. (Dimension from center
line of vane to center of holes for attaching vane
brackets is 17⁄32”.) Then start 8-32 set screws into vane
brackets.
15⁄16”
5-40 Screws
With
Lockwashers
Do not cut off
damper shaft until
vane is installed
8-32
Set Screws
#10 Sheet
Metal Screws
9. Insert damper shaft through access-mounting plate,
then through vane brackets. Holding indicator wheel
flush against access-mounting plate, lock damper
shaft to vane by tightening set screws, being sure to
Leave 1⁄8” minimum clearance
when tightening set screw
1
leave ⁄8” minimum clearance between edge of
vane and access-mounting plate as shown.
11.Motor is shipped in closed position. Turn indicator
wheel so that yoke on bottom of motor slips into
squareholesonindicatorwheelwhenmotorisplaced
into position. Tighten motor firmly with wing nuts. (The
word“closed”shouldbevisibleontheindicatorwheel.)
10.Install vane through hole in duct by turning vane
sidewaysandslippingdampershaftintoslotinbearing
plate on opposite side of duct. Push indicator wheel
flush against access-mounting plate and spin indica-
tor wheel to assure free turning of vane. Then attach
access-mounting plate to duct and cut off damper
shaft so it extends 1” past bearing plate.
For best connections, use #18 Thermostat wire. #16 will
also work satisfactorily.
WIRING
All wiring must conform to local and national electri-
cal codes.
Make connections to screw terminals according to wiring
diagram.
NOTE
To check motor operation without thermostat connected,
jumper 2 to 4 to open motor. Remove jumper to close
motor.
The WR S81-0125 Transformer (40 VA) will handle up to
4 damper motors. The WR S81-0126 (20VA) will handle
up to 2 damper motors.
If the furnace manufacturer recommends a wiring dia-
gram, follow such instructions. If none are available, the
following diagrams show suggested circuits for Type
2061Dampermotorsinconjunctionwithtwo-wirethermo-
stats (.2 Amp anticipator) and other related controls.
3
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Low Voltage
Constant Ignition
Oil Burner Control
High Limit
H
Line
G
White-Rodgers Damper Motor Thermostats (Two-Wire)
T
T
1
2
3
Burner
Motor
x
x
For
Oil
2
2
2
2
2
2
2
2
2
2
2
x
x
4
4
4
4
4
1
3
1
3
1
3
1
3
1
3
1
3
x
For
Gas x
H
LINE
G
2061 Damper Motors
G
LINE
H
S81-0126
TRANSFORMER
Additional
Zones
H
Line
G
Transformer
LOW VOLTAGE
SILENT KNIGHT
GAS VALVE
S81-0125
Transformer
HIGH LIMIT
2
1
3
4
Typical Multi-Zone Gas or Oil Fired System
PLUG-IN PILOT
White-Rodgers Damper Motor Thermostats (Two-Wire)
High Limit
Pilot
H
Line
G
2
2
2
2
2
2
4
4
4
1
3
1
3
1
3
S81-0125
Transformer
26A00 Series
Low Voltage
Diaphragm Gas Valve
2061 Damper Motors
Transformer supplies
power for low voltage
gas valve as well as
damper motors.
Typical 3-Zone Gas Fired System
2. Turn thermostat to lowest setting. Damper vane for
that zone will close and furnace burner will shut off as
auxiliary circuit is broken on damper motor.
CHECKING THE SYSTEM
Turn on the electricity. If gas fired, be sure pilot is lit. Then
check each zone separately as follows:
1. Turn thermostat to highest setting. Damper vane for
that zone will open and furnace burner will come on as
auxiliary circuit is made on damper motor.
4
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OPERATION
MANUAL OPERATION
To change damper vane from closed to open position:
Loosen wing nuts and pull damper motor back from
duct a short distance. Rotate indicator wheel 90° in
either direction so that yoke on damper motor drops
into the two round holes on indicator wheel. Then
retighten wing nuts.
The position of the damper vane can always be
determined by looking at the indicator wheel. If the
word “open” is visible, the vane is open. If the word
“closed” is visible, the vane is closed.
Observe the following instructions in the event it is neces-
sary to change the damper vanes from closed to open
position. For example, if the cooling system is not zoned
but does use the same duct work as the heating system,
the damper vanes should be changed from the closed
position to the open position at the start of the cooling
season.
To change damper vane from open to closed position:
Loosen wing nuts and pull damper motor back from
duct a short distance. Rotate indicator wheel 90° in
either direction so that yoke on damper motor drops
into the two square holes on indicator wheel. Then
retighten wing nuts.
CAUTION
!
Be sure to change the vanes back to the open
position at the start of the heating season.
5
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133-0010
ZONE-AIR
BYPASS DAMPER
INSTALLATION INSTRUCTIONS
DESCRIPTION
This bypass damper was designed for use with zoned The bypass damper, operating by means of air pressure,
warm air heating and air conditioning systems. It is permits any excess volume of air to pass directly to the
installed in a connecting duct between the furnace ple- cold air return, avoiding an increased air velocity through
num or the supply duct and the cold air return duct.
theremainingopenductswhichwouldresultindiscomfort
to the occupants of that zone.
Its purpose is to control and compensate for excess
volume and velocity of the air due to the closing of the
dampers leading to some of the zones.
INSTALLATION
All parts needed for the bypass damper are provided If several zones are not calling for heat, the bypass
except the damper vane. The vane should be cut from a dampershouldbepartiallyopen;ifonlyonezoneiscalling
piece of sheet metal to the proper size to fit the duct.
for heat, the bypass damper should be open.
The bypass duct should be properly sized. It should be
designed to handle at least the same amount of air as the
supply duct, less that required by the smallest zone.
NOTE
See the layout for zoned warm air system on page 2 for
additional information.
The damper located in the bypass duct has a counter-
weighted arm. It operates through the pressure of the air
as opposed to the torque of the weighted arm. Adjust the
counterweight so that with all zones calling for heat, the
fan in operation, and all ducts open, the bypass damper
is in the closed position.
Connecting
Duct
Counter-
weighted Arm
Furnace
Plenum
Partially open; one
or more zones closed;
fan operating
Air pressure
bypass damper
closed; all zones
open and/or
Cold Air
Return
Open position;
most zones closed;
fan operating
not operating
6
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