Table of Contents
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R-410A
MODELS:
YJ-30 Thru -50
30 - 50 Ton
60 Hertz
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Renewal Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Phasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1 YJ-30 thru -50 Physical Data . . . . . . . . . . . . . . . . . . . . . . 4
2 Unit Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Corner Weight & Center Of Gravity (Inches) . . . . . . . . . . 6
4 Minimum Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Electrical Data - Outdoor Unit . . . . . . . . . . . . . . . . . . . . . 9
1 Corner Weights & Center Of Gravity . . . . . . . . . . . . . . . . 6
2 Typical Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Matched with YJ-30/-40/-50 Condenser . . . . . . . . . . . . 12
5 Typical Liquid Line Solenoid Wiring . . . . . . . . . . . . . . . . 13
6 YJ Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 30 Ton Power And Control Wiring Connections . . . . . . 15
TABLE OF CONTENTS
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Refrigerant Mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Piping And Electrical Connection Sizes . . . . . . . . . . . . . . 16
Piping And Electrical Connections . . . . . . . . . . . . . . . . . . 17
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
LIST OF TABLES
6 Unit Dimensions (Inches) . . . . . . . . . . . . . . . . . . . . . . . . 14
8 Electrical Power Knockout Sizes (Inches) . . . . . . . . . . . 16
9 Smart Equipment™ UCB Details . . . . . . . . . . . . . . . . . . 21
LIST OF FIGURES
9 30 Ton Piping Connections . . . . . . . . . . . . . . . . . . . . . . 16
10
40 & 50 Ton Piping Connections . . . . . . . . . . . . . . . . . 17
11 Fan Orientation Control Box End . . . . . . . . . . . . . . . . . . 19
12 Compressor Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
13 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
14 YJ-30 Charging Curves . . . . . . . . . . . . . . . . . . . . . . . . . 27
15 YJ-40 Charging Curves . . . . . . . . . . . . . . . . . . . . . . . . . 27
16 YJ-50 Charging Curves . . . . . . . . . . . . . . . . . . . . . . . . . 28
5012887-BIM-D-1019
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Table of Contents
Related Manuals for Johnson Controls YJ-30
Summary of Contents for Johnson Controls YJ-30
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Page 1: Table Of Contents
5 Typical Liquid Line Solenoid Wiring ....13 14 YJ-30 Charging Curves ......27 6 YJ Unit Dimensions . -
Page 2: Nomenclature
(power and control) can be made through the front of the unit. Please refer to the equipment Technical Guide, Installation Manual and the piping applications bulletin 247077 or call the applications department for Ducted Systems @ 1-877-874-SERV for guidance. Johnson Controls Ducted Systems... -
Page 3: Safety Considerations
R-410A. If you are unsure, consult the equipment manufacturer. Failure to use R-410A compatible servicing equipment may result in property damage or injury. Johnson Controls Ducted Systems... -
Page 4: Physical Data
5012887-BIM-D-1019 Physical Data Table 1: YJ-30 thru -50 Physical Data Models Component YJ-30 YJ-40 YJ-50 Nominal Tonnage REFRIGERANT Refrigerant type R-410A R-410A R-410A Holding charge (lb) System #1 47.0 51.0 Operating Charge (lb) System #2 47.0 51.0 DIMENSIONS (inches) Length 128.5... -
Page 5: Rooftop Locations
The slab should not be tied to the building foundation, as noise will telegraph The condenser fans are the propeller type and are not through the slab. suitable for use with ductwork in the condenser air stream. Johnson Controls Ducted Systems... -
Page 6: Corner Weight & Center Of Gravity (Inches)
Screws on access panels will prevent casual tampering. Further safety precautions such as a fenced enclosure or locking devices on the panels may be advisable. Check local authorities for safety regulations. Johnson Controls Ducted Systems... -
Page 7: Clearances
96” will not span the required Spreaders, longer than the largest dimension across the width of the skid and can cause damage to the unit must be used across the top of the unit. unit’s base rails or condenser coils. Johnson Controls Ducted Systems... -
Page 8: Control Wiring
Do not leave the system open to the atmosphere. Unit damage could occur due to moisture being absorbed by the POE oil in the system. This type of oil is highly susceptible to moisture absorption. Johnson Controls Ducted Systems... -
Page 9: Electrical Data - Outdoor Unit
18.6 460-3-60 1 1/2 90.7 575-3-60 14.7 575-3-60 1 1/2 71.3 1. Maximum fuse or maximum circuit breaker (HACR type per NEC). 2. Based on three, 75°C insulated copper conductors in conduit and ambient of 30°C. Johnson Controls Ducted Systems... -
Page 10: Refrigerant Mains
Erodes the seat of the refrigerant control device. atmosphere is provided. Causes erratic control of the refrigerant entering the evaporator. NOTE: Dry nitrogen should flow through the system at all times when heat is being applied and until the joint has Johnson Controls Ducted Systems... -
Page 11: Start Installation
Punch a small hole "Application Data - General Piping Recommendations in the sealing disks, the flow of nitrogen will prevent any debris for Split System Air Conditioning and Heat Pumps". from entering the system. Unbraze both liquid and suction Johnson Controls Ducted Systems... -
Page 12: Typical Field Wiring Diagram Nj-30/-40 Evaporator Units, Nj-50 Air Handler And Macz-50A Evaporator Coil When Matched With Yj-30/-40/-50 Condenser
EVAPORATOR CONTROL BOX Figure 3: Typical Field Wiring Diagram NJ-30/-40 Evaporator Units, NJ-50 Air Handler and MACZ-50A Evaporator Coil when Matched with YJ-30/-40/-50 Condenser NOTE: On non NJ evaporator models, isolation relays must be NOTE: For applications on airhandlers/evaporator DX coils... -
Page 13: Typical Liquid Line Solenoid Wiring
Non NJ units may not include any or all of the components required to wire the unit. Use the diagram as general reference only. Figure 5: Typical Liquid Line Solenoid Wiring Johnson Controls Ducted Systems... -
Page 14: Yj Unit Dimensions
Figure 6: YJ Unit Dimensions Table 6: Unit Dimensions (Inches MODEL YJ-30 128.5 88.5 37.5 41.8 40.0 46.1 37.1 23.6 YJ-40 128.5 88.5 57.7 41.8 40.0 46.1 37.1 23.6 YJ-50 128.5 88.5 57.7 41.8 40.0 46.1 37.1 23.6 Johnson Controls Ducted Systems... -
Page 15: 30 Ton Power And Control Wiring Connections
DETAIL RIGGING HOLES SCALE 0.250 88.140 Figure 7: Ton Power And Control Wiring Connections Control Wiring Power Wiring 57.689 33.049 29.799 19.358 20.858 22.358 88.140 Figure 8: 40 & 50 Ton Power And Control Wiring Connections Johnson Controls Ducted Systems... -
Page 16: Piping And Electrical Connection Sizes
Table 8: Electrical Power Knockout Sizes (Inches) CONNECTION ENTRY 30-40-50T/230V 30-40-50T/460-575V POWER WIRING 2-1/2” 1-1/2” 37.518 10.984 11.385 Liquid (Sys 2) 37.826 Suction (Sys 2) 41.859 Suction (Sys 1) 46.190 Liquid (Sys 1) 50.313 88.140 Figure 9: 30 Ton Piping Connections Johnson Controls Ducted Systems... -
Page 17: Piping And Electrical Connections
12. Is any electrical wire laying against a hot refrigerant line? hours of crankcase heat or compressor damage can occur. Initial Start-Up Supply power to the unit through the disconnect switch at least 8 hours prior to starting the compressor. Johnson Controls Ducted Systems... -
Page 18: Operation
If the low-pressure switch opens during normal operation, the Smart Equipment™ control board NOTE: The timing intervals described in the following will de-energize the compressor, initiate the ASCD, and procedures are nominal. Some variations will naturally Johnson Controls Ducted Systems... -
Page 19: Continuous Blower
FM4 will restart. Condenser fans operate as above relay will also energize providing a G2 output as needed in regardless of lead-lag preference. some applications. Operation With A Four-Stage Thermostat If the total system is to be controlled with a 4-stage thermostat: Johnson Controls Ducted Systems... -
Page 20: Smart Equipment™ Control Board Navigation Components
Equipment™ control, refer to the Smart Equipment™ Controls Sequence of Operation Overview LIT- The wire number or color and terminal designations 12011950. referred to may vary. Check the wiring label inside the control box access panel for the correct wiring. Johnson Controls Ducted Systems... -
Page 21: Smart Equipment™ Ucb Details
Connects through circuit trace to the thermostat connection 24 VAC hot for switched inputs to the UCB strip R terminal, right FAN OVR pin, right HPS1 pin, right HPS2 pin, lower DFS pin and lower APS pin Johnson Controls Ducted Systems... - Page 22 Supply Air Temperature sensor input from 10KΩ with open circuit. Used in heat/cool staging cutouts, free cooling SAT+ @ 77°F, Type III negative temperature coefficient operation, demand ventilation operation, comfort ventilation thermistor operation, economizer loading operation, VAV cooling operation, hydronic heat operation. Johnson Controls Ducted Systems...
- Page 23 The VFD alarm contact switches from R within the unit wiring 24 VAC hot input from the normally open VFD VFDFLT harness. 24 VAC input results in unit shutdown and a “VFD alarm contact fault” alarm Johnson Controls Ducted Systems...
- Page 24 Lockout” and C1 output is then prevented until alarm reset. HPS2 24 VAC hot out for refrigerant circuit 2 High Not effective for one stage compressor UCBs. Connects (right pin) Pressure Switch through circuit trace to the R terminal Johnson Controls Ducted Systems...
- Page 25 On-board, 2-line x 8-character back-lit display economizer, 4-stage and FDD board parameters Button for display menu acknowledgment and ENTER navigation Button for display menu navigation and zeroing of CANCEL active compressor ASCD timer 4-way Joystick for display menu navigation Johnson Controls Ducted Systems...
- Page 26 Green FC bus communication transmission FC BUS currently active, off indicates the UCB is awaiting incoming FC indicator bus communication Green communication board Isolated Power Lit indicates the UCB is supplying power to the communication ISO PWR indicator sub-board Johnson Controls Ducted Systems...
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Page 27: Charging Curves
2. This chart is applicable to unit with the TXV's left to the factory setting. If the TXV's have been adjusted in the field, the charging chart may no longer apply. Figure 14: YJ-30 Charging Curves Charging Curves 40 Ton 115º... -
Page 28: Charging Curves
2. This chart is applicable to unit with the TXV's left to the factory setting. If the TXV's have been adjusted in the field, the charging chart may no longer apply. Figure 16: YJ-50 Charging Curves Johnson Controls Ducted Systems... -
Page 29: Start-Up Sheet
5012887-BIM-D-1019 Start-Up Sheet Johnson Controls Ducted Systems... - Page 30 5012887-BIM-D-1019 Johnson Controls Ducted Systems...
- Page 31 5012887-BIM-D-1019 Johnson Controls Ducted Systems...
- Page 32 5012887-BIM-D-1019 Johnson Controls Ducted Systems...
- Page 33 5012887-BIM-D-1019 Johnson Controls Ducted Systems...
- Page 34 Subject to change without notice. Printed in U.S.A. 5012887-BIM-D-1019 Copyright © 2020 by Johnson Controls, Inc. All rights reserved. Supersedes: 5012887-BIM-C-0118 York International Corporation 5005 York Drive Norman, OK 73069...
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