Carrier | 09DK054-094 | 09DK-3W - HVACpartners

09DK054-094
Air-Cooled Condenser Units
50/60 Hz
Wiring Diagrams
INDEX
UNIT
09DK054-094
DESCRIPTION
Field Wiring
Wiring Diagram and
Component Arrangement
Wiring Diagram and
Component Arrangement
09DK054,064
09DK074-094
LEGEND
ATS
AWG
CR
DU
EQUIP
FC
FCPS
FIOP
FM
GND
MMSN
NEC
PL
PRI
SEC
TB
TRAN
XL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Air Temperature Switch
American Wire Gage
Control Relay
Dummy Terminal
Equipment
Fan Contactor
Fan Cycle Pressure Switch
Factory-Installed Option
Fan Motor
Ground
Motormaster® Sensor
National Electrical Code
Plug Assembly
Primary
Secondary
Terminal Block
Transformer
Across-the-Line Start
Terminal Block Connection
Marked Terminal
Unmarked Terminal
Unmarked Splice
Marked Wire
Factory Wiring
Field Wiring
Indicates common potential;
does not represent wiring.
DRAWING NUMBER
09DK500319
FIG. NO.
1
09DK500306
2
09DK500307
3
NOTES
1. Units are factory wired for a 50/50% capacity split. If 100%
capacity is required, connect the factory-supplied jumpers from
TB2-1 to TB3-1 and from TB2-2 to TB3-2. If jumpers are connected for 100% capacity, only one control power supply is
required.
2. When a fan control kit is used, the jumper from TB2-1 to TB3-1
and from TB2-2 to TB3-2 must be connected. The fan control kit
is factory wired for 67/33% capacity split. If a 33/33/33% capacity split is required, remove the jumper from TB4-1 to TB5-1 and
from TB4-2 to TB5-2. If a 33/33/17/17% capacity split is
required, remove the jumper from TB4-1 to TB5-1 to TB7-1 and
from TB4-2 to TB5-2 to TB7-2.
3. On fan control kits, 208/230-v units are factory wired for 230-v
power supply. For 208-v power supply, connect yellow wire to
terminal marked H2.
4. Terminal blocks TB2, TB3, TB4, TB5, TB6, and TB7 are for
external field control connections. Control connections are to be
class 1 wiring, 14 AWG (2.08 mm2) copper conductors only.
5. Wiring for field power supply must be rated 75° C minimum.
Use copper, copper-clad aluminum, or aluminum conductors.
Maximum incoming wire size for each terminal block is 2/0
(67.4 mm2).
6. Replacement of factory wires must be with 105° C appliance
wiring material or its equivalent.
7. Factory wiring is in accordance with National Electrical Code
(NEC). Field modifications or additions must be in compliance
with all applicable codes.
8. Fan motors are thermally protected. Three-phase motors are
protected against primary single phasing conditions.
9. Line numbers on the left side of the label diagrams indicate the
contact number. The numbers on the right side of the label diagrams match the contacts with their corresponding coils. A plain
number indicates normally open contacts. An underlined number indicates normally closed contacts.
10.
MAIN POWER SUPPLY
CONTROL CIRCUIT
V-PH-HZ
V-PH-HZ
208/230-3-60
460-3-60
115-1-60
575-3-60
380-3-60
230-1-60
380/415-3-50
230-1-50
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 530-961
Printed in U.S.A.
Form 09DK-3W
Pg 1
9-94
Replaces: 09DK-2W
Book 2
Tab 4a
OPERATION
Sequence of Operation — The 09DK units have fully
automatic intermediate-season head pressure control through
condenser fan cycling, using electro-mechanical fan cycling
controls. Standard head pressure controls are supplied for
100% and 50/50% condenser capacity applications. Other circuit split applications (67/33%; 33/33/33%; 33/33/17/17%
nominal capacity splits) require the accessory fan control kit.
In the standard control scheme, fans 1 and 2 are on when
there is a call for cooling from their respective control circuits.
Fans 1 and 2 are non-cycling. On all units, fans 3 and 4 are controlled by a fan cycling pressure switch that responds to
condensing pressure on each of the primary coil circuits. On
074-094 units, fans 5 and 6 are controlled by two air temperature switches that respond to the outdoor ambient temperature.
The air temperature switches are located on the control box
shelf.
Fan cycling pressure switch control: Fans 3 and 4 are on
above 260 ± 15 psig (1793 ± 103 kPa) and off below 160 ±
10 psig (1103 ± 69 kPa). If pressure is rising between 160 psig
(1103 kPa) and 260 psig (1793 kPa), fans 3 and 4 are off. If
pressure is decreasing from 260 psig (1793 kPa) to 160 psig
(1103 kPa) fans 3 and 4 are on.
Air temperature switch control: On the 074-094 condensers,
below 70 ± 3° F (21.1 ± 1.7° C) outdoor ambient, fans 5 and 6
are off; above 80 ± 3° F (26.7 ± 1.7° C), fans 5 and 6 are on.
Between 70 F (21.1 C) and 80 F (26.7 C) whether fans 5 and 6
are on or off depends on whether temperature is rising or falling. If the temperature is rising from 70 F (21.1 C) to 80 F
(26.7 C), fans 5 and 6 are off. If the temperature is falling from
80 F (26.7 C) to 70 F (21.1 C) fans 5 and 6 are on.
Accessories
FAN CONTROL KIT (054-084 Units Only) — With the
67/33%, 33/33/33% and 33/33/17/17% nominal capacity split
options, 3 or 4 FCPSs are used. For these applications, an
accessory fan control kit is required.
Fans 2, 4, and 6 are shared by the 67% and 33% refrigerant
circuits on 67/33% applications. With 33/33/33% applications,
fans 1, 3, 5 and 2, 4, 6 are shared by two of the 33% refrigerant
circuits. With 33/33/17/17% applications, fans 1, 3, 5 and 2, 4,
6 are shared by a 33% and a 17% refrigerant circuit. The fan
control kit ensures that the fans operate when needed for efficient control.
NOTE: Fans 5 and 6 are used on 09DK074 and 084 units only.
The fan control kit panel is factory wired for a 67/33%
capacity split. It utilizes TB4 for the 67% control circuit and
TB6 for the 33% control circuit. See Fig. 1 for wiring details
for 67/33%, 33/33/33%, and 33/33/17/17% capacity splits. To
determine fan and refrigeration circuit connections, refer to fan
control kit accessory installation instructions.
TRANSFORMER — The control transformer is used to convert 208, 230, or 460 v to 115 v for use on 115 v condenser unit
control systems, sourcing power from the main unit power
connections.
MOTORMASTER® III HEAD PRESSURE CONTROL
DEVICE — The Motormaster III device is a motor speed control which adjusts condenser fan motor speed in response to
changes in liquid temperatures. A properly applied Motormaster III control extends the operating range of air conditioning systems and permits operation at lower outdoor ambient
temperatures.
The Motormaster III control permits operation of the unit to
an ambient temperature of –20 F (–29 C). This device controls
the speed of 3-phase fan motors that are compatible with the
Motormaster III control. These motors are installed at the
factory and are used on fans 1 and 2.
NOTE: Two Motormaster III controls must be added for each
of these units, one for each circuit.
For more information, refer to the Motormaster III accessory installation instructions.
MOTORMASTER III RELAY/SENSOR KIT (054-084
Units Only) — The Motormaster III Relay/Sensor kit is used
to provide efficient control of the primary fans (fans 1 and 2)
on 09DK condensers with nominal 67/33%, 33/33/33%, and
33/33/17/17% split applications. On 67/33% applications, fan
no. 2 is shared by the 33% and 67% refrigerant circuits. This
accessory ensures that the first circuits on and the last circuits
off control the Motormaster III device. One kit is required for
67/33% applications. Two kits are required for 33/33/33% and
33/33/17/17% applications. See Motormaster III Relay/Sensor
kit accessory installation instructions for more information.
2
Fig. 1 — Field Wiring; 054-094 Units
3
Fig. 1 — Field Wiring; 054-094 Units (cont)
4
Fig. 2 — Wiring Diagram and Component Arrangement; 054 and 064 Units
5
Fig. 2 — Wiring Diagram and Component Arrangement; 054 and 064 Units (cont)
6
Fig. 2 — Wiring Diagram and Component Arrangement; 054 and 064 Units (cont)
7
Fig. 3 — Wiring Diagram and Component Arrangement; 074-094 Units
8
Fig. 3 — Wiring Diagram and Component Arrangement; 074-094 Units (cont)
9
Fig. 3 — Wiring Diagram and Component Arrangement; 074-094 Units (cont)
10
Copyright 1994 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 530-961
Printed in U.S.A.
Form 09DK-3W
Pg 12
9-94
Replaces: 09DK-2W
Book 2
Tab 4a
Download PDF