Carrier 09DK020-044 User Manual

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Air-Cooled Condenser Units
Motormaster® Low Ambient Controls
Wiring Diagrams
50/60 Hz
WIRING DIAGRAM INDEX
Fig. No.
®
Motormaster
Motormaster, 09DK 460 v, 575 v (60 Hz) . . . . . . . . . . . . . . . . 5
Fan Cycling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
, 09DK 208/230 (60 Hz) . . . . . . . . . . . . . . . . . . 4
LEGEND
(For All Figures)
09DK020-044
ATS — EQUIP — FC — FM — GND — TB
Air Temperature Switch Terminal Block Connection
uipment Marked Terminal
E Fan Contactor Unmarked Terminal Fan Motor Factor Ground Field Control Wirin Terminal Block Connection Field Power Wirin
NOTES (Figs. 3-5)
1. For field power connections, splice field wires to (3) leads from contactor number 1 (FC1).
.
2.
Control Circuit
Wiring
220 v 380 v, 60 Hz
230 v
115 v
Use 14 AWG copper conductors only for
control circuit wiring.
Power Supply
Wiring
230 v, 50 Hz 400 v, 50 Hz
208/230 v, 60 Hz
460 v, 60 Hz 575 v, 60 Hz
Wirin
3. Fan motors are terminally protected. Thre e-phase motors are protected against primary single-phasing conditions.
4. Replacement of original wire s must be with type 90 C wire or its equivalent.
5. Factory wiring is in accordanc e with National Electrical (NEC). Field modifications or additions must be in com­pliance with all applicable codes.
6. Wiring for field power supply must be rated 60 C. Use copper, copper-clad aluminum or aluminum conductors.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 Ta b 4 a
PC 111 Catalog No. 530-913 Printed in U.S.A. Form 09DK-4W Pg 1 4-00 Replaces: 09DK-1W
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SAFETY CONSIDERATIONS
Fig. 1 — Fan Motor Locations
Installing, starting up, and servicing air conditioning equip­ment can be hazardous due to system pressures, electrical com­ponents, and equipment location.
Only trained, qualified installers and service mechanics should install, start up, and service this equipment. When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment. Fol­low all safety codes. Wear safety glasses and work gloves.
ELECTRIC SHOCK HAZARD Open all remote disconnects before servicing
this equipment.
MOTORMASTER® LOW AMBIENT CONTROL
NOTE: Installation of Motormaster Low Ambient Control requires use of fan cycling control accessory, see page 7.
Introduction
There are two accessory packages as follows:
2. Remove FM1 (fan motor no. 1) fan guard (see Fig. 1) located next to control box end.
3. Disconnect FM1 wiring in the motor junction box and re­move FM1 from unit.
4. Remove fan propeller from FM1 and save. Fan propeller is reinstalled on the speed control motor in a later step.
5. Place motor mount spacer in place over FM1 motor mount.
6. Install speed control motor with rainshield (included in package) in place of FM1.
PACKAGE NO.
50DJ-902---801
50DJ-902---811
*For Motormaster head pressure control operation, 575-v unit
requires installation of transformer (Carrier Part No. HT01AH854) not included in package.
UNIT
Volt s-Ph-H z
208/230-3-60
575-3-60*
460-3-60 200/230-1-60
MOTOR
Volt s-Ph-H z
200/230-1-60
Each accessory package contains the parts listed in Table 1.
Note that these installation instructions are for 60 Hz units, but installation procedures for 50 Hz units are similar. See price pages for required parts for 50 Hz Motormaster applica­tions. Contact Application Engineering if installation assis­tance is required.
Table 1 — Package Contents
PACKAGE
NOS. 50DJ-902---801 50DJ-902---811
Quantity
1 1 1 1 1 1 1 1
Speed Control Motor Speed Control Motor Motor Mount Spacer Motor Mount Spacer Capacitor Capacitor Capacitor Boot Capacitor Boot Motormaster Controller Motormaster Controller Fastener Package Fastener Package Instruction Booklet Instruction Booklet
—Transformer
Installation
1. Disconnect all power to the unit and open control box.
To avoid possible electrical shock and personal injury, all power to unit must be disconnected before working on unit. T ag all disconnects to alert others unit is being worked on.
7. Because the standard fan motor is 3-phase, and the speed control motor is single-phase, it is necessary to add a ca­pacitor. Install the capacitor on the divider panel above the condenser coil.
8. Mount the capacitor upside down (terminals pointing down) using capacitor strap and screws (holes must be field drilled). See Fig. 2. To prevent capacitor from slip­ping down, insert an additional screw through the panel for the capacitor to rest on.
9. Disconnect black wire connecting FM1 junction box to TB1 terminal 2 (575-v only). See Fig. 3. Disconnect yel­low wire from FC1 terminal 12. Disconnect blue wire from FC1 terminal 13.
10. Connect yellow wire from capacitor to the red wire (T8) in the speed control motor junction box. Use wire nut to connect. See Fig. 4. Connect blue wire from other side of capacitor to the yellow wire (T4) in the speed control mo­tor junction box. Use wire nut to connect.
11. From the same terminal on the capacitor as blue wire con­nection, run a field-supplied wire to FC1 terminal 12. Tie the blue (T1) and black (T5) wires in the motor junction box together, using a wire nut.
12. Remove the black jumper connecting TB1 to TB1
1 2
in the control box.
13. Mount the Motormaster
®
controller vertically on the di­vider panel next to the capacitor. See Fig. 2. It must be mounted vertically with the leads coming out the bottom. Using the template at the back of these instructions, drill the required 4 mounting holes. Use 4 no. 10 sheet metal screws and star washers provided to attach the controller. The star washers must be used to ensure electrical ground.
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OTES:
1. Transformer shield and 575-v transformer are field supplied (transformer part no. HT01AH854).
2. Exact mounting locations on divider panel for capacitor, Motor­master controller, and transformer are at discretion of installer. There are no wires or obstructions on reverse side of divider panel to interfere with mounting screws.
Fig. 2 — Mounting Motormaster® Controller,
Capacitor, and 575-V or 460-V Transformer
16. For 460-v and 575-v units only, mount and wire transformer (460-v — P/N HT01AH852, 575-v — P/N HT01AH854) as follows:
a. Mount tran sformer to the di vider panel . See Fi g. 2.
Drill required mounting holes.
b. Connect field-supplied wire from FC1 terminal 21
to the primary side of the transformer. See Fig. 5. Connect a field-supplied wire from FC1 terminal 22 to the other primary of the trans­former.
c. Run field-supplied wire from the secondary of the
transformer to the capacitor. Run field-supplied wire from the other secondary of the transformer to one of the black wires on the controller. See Fig. 5.
d. Install field-supplied shield o ver the transformer.
See Fig. 2.
17. Reinstall the fan propeller and fan guard. Ensure that cen­ter of propeller is correct distance from top of fan orifice. See Fig. 5.
18. Route the sensor wire from the controller to the sensor location. Secure sensor wire to avoid contact with con­denser coil.
14. For 208/230-v only: Connect a field-supplied wire from TB1 terminal 1 to one
of the black wires in the Motormaster controller. Use wire nut to connect. See Fig. 4.
15. Take the black wire that was disconnected in Step 3 and connect it to the purple wire (P1) in the speed control mo­tor junction box. Use wire nut to connect. Replace junc­tion box cover.
Be sure the wires running to the speed control motor are wire-tied securely to the motor mount, to prevent the wires from becoming entangled in the propeller fan whe n unit is running.
The sensor assembly is fragile. Handle with care.
19. For 09DK020-034 units, secure the sensor to the coil re­turn bend. For 09DK044, secure the sensor to crossover tube. See Fig. 7 for proper location for each unit. Use no. 4-40 screw, two plate washers, and nut provided. See Fig. 8.
20. Coil up excess wire and secure it to controller.
21. Protect sensor wire from physical damage by installing field-supplied protective material.
22. Replace control box cover.
Winter Start Control —
These compressorless con­denser sections do not need to be directly modified. However, the total system may require winter start control. Refer to base unit instructions.
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Fig. 3 — Standard Unit Power and Control Schematic, 09DK
Fig. 4 — Motormaster
®
Controller Wiring; 09DK 208/230-Volt Units
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Fig. 5 — Motormaster® Controller Wiring; 09DK 460-Volt and 575-Volt Units
Fig. 6 — Location of Propeller on Motor Shaft from
Outside of Orifice Ring
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NOTE: When using multiple indoor units, or a dual compressor indoor unit, place sensor on circuit containing refrigerant from leading compressor. Only one sensor is required.
Fig. 7 — Motormaster® Sensor Locations on Condenser Coil Header End, 09DK Units
Fig. 8 — Sensor Installation
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ACCESSORY FAN CYCLING CONTROL
Fig. 9 — Model 09DK (028 Shown)
Accessory Fan Cycling Control Usage
PACKAGE
NUMBER 09DK
500070
500071
500072
500073
QTY PER KIT NO.
070 071 072 073
1122Temperature Actuated Switch 1111Terminal Block 0011Terminal Adapter 1122Contactor 1111Instructor 1111Parts Bag
PARTS BAG CONTENTS: 5555Mounting Screws 2244Screws, 8-18 x 2244Screws, 6AB x 5588Wire Assemblies 3333Wire Ties
CONTROL CKT VOLTAGE
3 Ph, 60 Hz 3 Ph, 50 Hz
208230, 460,575
380 230,400
208230, 460,575
380 230,400 034,044
020 (60 Hz only),
034,044
Accessory Kit Contents — 09DK
USED ON
09DK
020,024,
028
024,028
ITEM
1
/2-in. long
1
/2-in. long
General —
The Accessory Fan Cycling Control maintains unit cooling capacity control during changes in outside ambient temperature. If full cooling is not required during certain oper­ating periods, the accessory can save energy by supplying pow­er to fewer fans.
Before Installation —
Check kit contents for missing or damaged items. File claim immediately with transit company if anything is missing or damaged. Check to be sure ac cessory control voltage matches available power supply.
Fan Cycling Control Installation
1. Shut off power to unit.
Electrical shock can cause personal injury or death. Before installing this accessory, be sure power to unit is discon­nected. There may be more than one disconnect switch. Attach tags at disconnect(s) to alert others not to restore power until installation is completed.
2. Remove unit control box cover. See Fig. 9.
3. 09DK020-028 Units: Mount temperature actuated switch (ATS) onto the bottom inner divider panel of unit, using two no. 6AB x are predrilled in panel. See Fig. 9.
09DK034,044 Units: Mount temperature actuated switch­es (A TS and ATS2) onto the bottom inner divider panel of unit, using two no. 6AB x (2 screws for each switch). Mount switches side by si de in predrilled holes. See Fig. 9.
1
/2-in. long screws provided. Screw holes
1
/2-in. long screws provided.
4. 09DK020-028 Units: Install fan contactor FC2 and termi­nal block TB2 inside control box. See Fig 10. Disconnect red wire from FC1 and orange wire from FC1 . Connect red wire to FC2 . Connect orange wire to
23
FC2 . Attach 8-in. black wire provided in accessory package to FC1 and FC2 . Connect the 8-in. blue wire to FC1 and FC2 . Next, connect the 8-in. white wire to FC1 neutral side, and FC2 . Attach the 18-in. black wire to FC1 control power side and TB2 . Connect one lead of ATS to TB2 and connect the other lead to FC2 .
11 13
21
11 11
13 13
C2
1
1
C1
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09DK034,044 Units: Install fan contactors FC2 and FC3
Fig. 10 — Component Arrangement
Fig. 11 — Terminal Adapter
and terminal block TB2 inside control box. See Fig 9. Add terminal adapter to TB2 . See Fig. 10 and 11. Dis­connect red and pink wires from FC1 . Also, discon­nect orange and gray wires from FC1 . Connect red wire to FC2 and pink wire to FC3 . Also, con-
21 21
nect orange wire to FC2 and gray wire to FC3 .
1
11
13
23 23
Attach 8-in. black wire provided in accessory package to
11 11
FC1 and FC2 . Connect the other 8-in. black wire to FC1 and FC3 . Connect an 8-in. blue wire to FC1 and FC2 . Attach the other 8-in. blue wire to FC1 and FC3 . Next, connect an 8-in. white wire to FC1 neutral side and FC2 . Attach the other 8-in. white wire to FC2 and FC3 . Connect
11 11
13 13
13 13
C2
C2 C2
the 18-in. black wire to FC1 control power side and
1
TB2 . Attach one lead of ATS (Air Temperature Switch) to TB2 and th e other lead to FC2 . Con­nect one lead of ATS2 to TB2 and the other lead to
C1
FC3 . See Fig. 12 for wiring connections.
1
1
C1
5. Route the wire leads of ATS around the coil, keeping them away from the coil and any sharp metal edges. In­stall wire ties provided through predrilled holes in upper divider panel. See Fig. 9. Run ATS wire leads through wire ties, then into t he 1
3
/8-in. (35 mm) diameter control
box opening.
6. The underside of the ATS is the thermal sensor area that senses the temperature of air entering the coil. The air temperature switch opens at 60 ± 3 F and closes at 70 ± 3 F (020,024,028 units only). On 09DK034 and 09DK044 units, ATS opens at 55 ± 3 F and closes at 65 ± 3 F , and ATS2 opens at 70 ± 3 F and closes at 80 ± 3 F.
7. ATS controls fan motor (FM2). O n 09DK034 and 044 units, ATS2 controls fan motor (FM3).
8. If Motormaster
®
control is to be used to modulate fan motor (FM1), see installation instructions included with 09DK wiring book, and see 32LT Motormaster control installation instructions for additional general reference.
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Fig. 12 — Accessory Fan Cycling Control Wiring
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Copyright 2000 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 Ta b 4 a
PC 111 Catalog No. 530-913 Printed in U.S.A. Form 09DK-4W Pg 10 4-00 Replaces: 09DK-1W
Page 11
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MOUNTING TEMPLATE FOR MOTORMASTER® CONTROL
Copyright 2000 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 Ta b 4 a
PC 111 Catalog No. 530-913 Printed in U.S.A. Form 09DK-4W Pg 12 4-00 Replaces: 09DK-1W
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