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Split SyStem air conditioner
inStallation inStructionS
S4Bd - 018, 024, 030, 036, 042, 048, & 060 (1.5, 2, 2.5, 3, 3.5, 4, & 5 ton) Series
important Safety information ................. 2
air conditioner inStallation .................... 3
General Information .............................................. 3
Before You Install this Unit ..................................... 3
Locating the Air conditioner................................... 3
Packaging Removal .............................................. 3
Ground Level ......................................................... 3
Roof Mount............................................................ 3
Indoor & Outdoor Unit ........................................... 4
electrical Wiring ........................................... 4
Pre - Electrical Checklist ....................................... 4
Line Voltage ........................................................... 4
Diagnostics Module ..................... 5
24VAC Power Wiring ........................................... 5
Thermostat Demand Wiring ................................ 5
Interpreting the Diagnostic LED's ....................... 5
LED Description .................................................. 6
Grounding ............................................................. 6
Reverse Rotation Verification ................................ 6
Unbalanced 3-Phase Supply Voltage .................... 6
Thermostat Low / Voltage Connections ................. 7
Startup & adjuStmentS ............................... 7
Pre - Start Checklist .............................................. 7
Start-up Procedures .............................................. 7
Air Circulation - Indoor Blower .............................. 7
System Cooling ..................................................... 7
System Heating ..................................................... 7
it is your responsibility to know this product better than your customer. this includes being
able to install the product according to strict safety guidelines and instructing the customer on
how to operate and maintain the equipment for the life of the product. Safety should always be
the deciding factor when installing this product and using common sense plays an important
role as well. pay attention to all safety warnings and any other special notes highlighted in the
manual. improper installation of the furnace or failure to follow safety warnings could result in
serious injury, death, or property damage.
these instructions are primarily intended to assist qualified individuals experienced in the
proper installation of this appliance. Some local codes require licensed installation/service
personnel for this type of equipment. please read all instructions carefully before starting the
installation. return these instructions to the customer's package for future reference.
do not deStroy. pleaSe read carefully & Keep in a Safe place for future reference.
Refrigerant Charging ............................................. 7
Outdoor Temperatures Above 55° F ...................... 8
air conditioner maintenance .................... 8
component functionS .................................. 8
charging taBleS & chartS .......................... 9
Table 3. Charging Table for 1.5 Ton Units .......... 10
Table 4. Charging Table for 2 Ton Units ............. 10
Table 5. Charging Table for 2.5 Ton Units .......... 10
Table 6. Charging Table for 3 Ton Units ............. 11
Table 7. Charging Table for 3.5 Ton Units .......... 11
Table 8. Charging Table for 4 Ton Units ............. 11
Table 9. Charging Table for 5 Ton Units ............. 12
Figure 3. Charging Chart for 1.5 Ton Units ........ 12
Figure 4. Charging Chart for 2 Ton Units ........... 13
Figure 5. Charging Chart for 2.5 Ton Units ........ 13
Figure 6. Charging Chart for 3 Ton Units ........... 14
Figure 7. Charging Chart for 3.5 Ton Units ........ 14
Figure 8. Charging Chart for 4 Ton Units ........... 15
Figure 9. Charging Chart for 5 Ton Units ........... 15
electrical diagramS & taBleS ................ 16
Figure 10. W.D., Single Phase (1.5 - 5 Ton) ...... 16
Figure 11. W.D., 3-Phase, (3, 4, & 5 Ton) .......... 17
Table 10. Comfort Alert LED Diagnostics .......... 18
Table 11. Module Wiring Troubleshooting .......... 19
inStall. / performance checKliSt ......... 20
replacement partS ...................................... 20
important
attention inStallerS:
13 Seer, Single & 3-phaSe modelS
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Related Manuals for Nortek JS4BD-KA
Summary of Contents for Nortek JS4BD-KA
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Page 1: Table Of Contents
Split SyStem air conditioner 13 Seer, Single & 3-phaSe modelS inStallation inStructionS S4Bd - 018, 024, 030, 036, 042, 048, & 060 (1.5, 2, 2.5, 3, 3.5, 4, & 5 ton) Series important Safety information ....2 Refrigerant Charging ..........7 Charging the Unit in AC Mode with air conditioner inStallation .... -
Page 2: Important Safety Information
important Safety information INSTALLER: Please read all instructions before caution: servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted this unit uses refrigerant r-410a. do not use in the manual. Safety markings are used frequently any other refrigerant in this unit. -
Page 3: Air Conditioner Installation
air conditioner inStallation packaging removal note: To prevent damage to the tubing connections, general information carefully remove the carton and user’s manual from the The S4BD series air conditioner is designed only for equipment. Discard the shipping carton. outdoor rooftop or ground level installations. This unit has been tested for capacity and efficiency in accordance ground level with AHRI Standards and will provide many years of safe... -
Page 4: Connecting Refrigerant Tubing Between The Indoor & Outdoor Unit
connecting refrigerant tubing Between the indoor electrical Wiring & outdoor unit Warning: caution: to avoid risk of electrical shock, personal When servicing, cover or seal openings to injury, or death, disconnect all electrical power minimize the exposure of the refrigerant system to the unit before performing any maintenance to air to prevent accumulation of moisture and or service. -
Page 5: Comfort Alert Tm Diagnostics Module
• Overcurrent protection must be provided at the branch circuit distribution panel and sized as shown on the unit rating label and according to applicable local codes. See the unit rating plate for minimum circuit ampacity and maximum overcurrent protection limits. •... -
Page 6: Led Description
until the condition returns to normal or if 24 VAC power 5. SetReturn to the outside power disconnect and swith is removed from the module. See Table 10 (page 18) for it to the ON position. flash code identification or Table 11 (page 19) for module 6. -
Page 7: Thermostat Low / Voltage Connections
thermostat connections 2. Verify the blower runs continuously. Check the air delivery • Thermostat connections should be made in accordance at the supply registers and adjust register openings for with the instructions supplied with the thermostat and balanced air distribution. If insufficient air is detected, the indoor equipment. -
Page 8: Charging The Unit In Ac Mode With Outdoor Temperatures Above 55° F
(pages 10 -12) and Figures 3 - 9 (pages 12 - 15) for Clean the outdoor coil and louvers as necessary using correct system charging. a mild detergent and water. Rinse thoroughly with water. • S4BD outdoor units with non-AHRI listed indoor coils •... -
Page 9: Charging Tables & Charts
S4Bd refrigerant charging chartS - cooling only application notes on the use of charging charts legend noteS: Shaded boxes indicate flooded conditions. 1. All pressures are listed psig and all temperatures in °F Rated design values. The suction pressure 2. Discharge temperatures GREATER than charted values will be lower than design value if outdoor air indicate an UNDERCHARGED system. - Page 10 outdoor temperature (°f) Suct. press. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. table 3. charging table for S4Bd-018 Series (1.5 ton units) - orifice matches outdoor temperature (°f) Suct.
- Page 11 outdoor temperature (°f) Suct. press. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. table 6. charging table for S4Bd-036 Series (3 ton units) - orifice matches outdoor temperature (°f) Suct.
- Page 12 outdoor temperature (°f) Suct. press. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. liq. dis. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. press. temp. table 9. charging table for S4Bd-060 Series (5 ton units) - orifice matches Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F)
- Page 13 Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F) figure 4. charging chart for S4Bd-024 Series (2 ton units) - tXV matches note: do not add or remove refrigerant if pressure reading is between the curves. Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F)
- Page 14 Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F) figure 6. charging chart for S4Bd-036 Series (3 ton units) - tXV matches note: do not add or remove refrigerant if pressure reading is between the curves. Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F)
- Page 15 Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F) figure 8. charging chart for S4Bd-048 Series (4 ton units) - tXV matches note: do not add or remove refrigerant if pressure reading is between the curves. Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature (F)
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Page 16: Electrical Diagrams & Tables
electrical diagramS & taBleS WIRING DIAGRAM Split System Air Conditioner (Outdoor Section) Single Phase NOTES: 1. Disconnect all power before servicing. 1. Couper le courant avant de faire letretien. 2. For supply connections use copper conductors only. 2. Employez uniquement des conducteurs en cuivre. 3. - Page 17 YELLOW/BLACK figure 11. Wiring diagram for S4Bd, 3- phase models (3, 4, & 5 ton units)
- Page 18 comfort alert trouBleShooting Status led Status led description Status led troubleshooting information POWER Module has power Supply voltage is present at module terminals (Green LED) • Compressor protector is open • Check for high head pressure • Check compressor supply voltage Thermostat demand signal Y •...
- Page 19 comfort alert trouBleShooting - continued Status led Status led description Status led troubleshooting information • Run capacitor has failed • Open circuit in compressor start wiring or connections ALERT Open Start Circuit — Check wiring and connectors between supply and the compressor S Flash Code 6 Current only in run terminal...
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Page 20: Install. / Performance Checklist
inStallation / performance checK liSt electrical SyStem: inStallation addreSS: Electrical connections tight? Line voltage polarity correct? CITY ________________________ STATE ________________ Rated Voltage: ___________________________________ VOLTS UNIT MODEL # ________________________________________ UNIT SERIAL # _______________________________________ L1-L2 Volts: _____________________________________ VOLTS Unit Installed Minimum clearances per Figure 1 (page 3)? L1-L3 Volts: _____________________________________ VOLTS inStaller name:...
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