Nortek S4BD Series Installation Instructions Manual
Split system air conditioner
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Split SyStem air conditioner
inStallation inStructionS
S4Bd Series - 036, 048, & 060 (3, 4, & 5 ton models)
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
Grounding ............................................................. 5
Thermostat Low / Voltage Connections ................. 5
Reverse Rotation Verification ................................ 5
Unbalanced 3-Phase Supply Voltage .................... 6
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.
Startup & adjuStmentS ............................... 6
Pre - Start Checklist .............................................. 6
Start-up Procedures .............................................. 6
Air Circulation - Indoor Blower .............................. 6
System Cooling ..................................................... 6
System Heating ..................................................... 6
Refrigerant Charging ............................................. 7
Charging the Unit in AC Mode with
Outdoor Temperatures Above 55° F ...................... 7
air conditioner maintenance .................... 7
charging taBleS & chartS .......................... 8
Table 3. Charging Table for 3 Ton Units ............... 9
Table 4. Charging Table for 4 Ton Units ............... 9
Table 5. Charging Table for 5 Ton Units ............. 10
Figure 2. Charging Chart for 5 Ton Units ........... 10
electrical diagramS & taBleS ................ 11
Figure 3. Wiring Diagram for 3, 4, & 5 Ton ........ 11
inStall. / perFormance checKliSt ......... 12
replacement partS ...................................... 12
important
attention inStallerS:
13 Seer, 3-phaSe
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Summary of Contents for Nortek S4BD Series
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Page 1: Table Of Contents
Split SyStem air conditioner 13 Seer, 3-phaSe inStallation inStructionS S4Bd Series - 036, 048, & 060 (3, 4, & 5 ton models) important SaFety inFormation ....2 Startup & adjuStmentS ....... 6 Pre - Start Checklist ..........6 air conditioner inStallation ....3 Start-up Procedures .......... -
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
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... -
Page 4: Connecting Refrigerant Tubing Between The Indoor & Outdoor Unit
electrical Wiring connecting refrigerant tubing Between the indoor & 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: Grounding
• Overcurrent protection must be provided at the branch copper Wire SiZe — aWg circuit distribution panel and sized as shown on the unit (1% Voltage drop) rating label and according to applicable local codes. See the unit rating plate for minimum circuit ampacity Supply Wire length-Feet Supply circuit and maximum overcurrent protection limits. -
Page 6: Unbalanced 3-Phase Supply Voltage
air conditioner maintenance unbalanced 3-phase Supply Voltage Voltage unbalance occurs when the voltages of all phases Warning: of a 3-phase power supply are no longer equal. This unbalance reduces motor efficiency and performance. Some underlying causes of voltage unbalance may include: to prevent electrical shock, personal injury, or Lack of symmetry in transmission lines, large single-phase death, disconnect all electrical power to the unit... -
Page 7: Startup & Adjustments
Start up & adjuStmentS refrigerant charging pre-Start check list Warning: √ Verify the indoor unit is level and allows proper condensate drainage. S4Bd Split System air conditioners are shipped √ Verify the outdoor coil and top of the unit are free from charged with r410a refrigerant and ready obstructions and debris, and all equipment access/ for installation. - Page 8 the filter-dryers when performing any repair to the Charging the Unit in AC mode at outdoor temperatures refrigeration system with one capable of acid removal. above 55° F for optimized sub-cooling of 10° F - 12° F. After completing the repairs, evacuate the system to 1.
- Page 9 legend Shaded boxes indicate flooded conditions. Rated design values. The suction pressure will be lower than design value if outdoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design. noteS: 1. All pressures are listed psig and all temperatures in °F 2.
- Page 10 legend Shaded boxes indicate flooded conditions. Rated design values. The suction pressure will be lower than design value if outdoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design. noteS: 1. All pressures are listed psig and all temperatures in °F 2.
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Page 11: Electrical Diagrams & Tables
electrical diagramS & taBleS YELLOW/BLACK Figure 3. Wiring diagram for S4Bd, 3- phase models (3, 4, & 5 ton units) - Page 12 Blower Motor Fan Motor components: Blower Assembly Fan Grille Cabinet Panels Filter/Driers Expansion Valves Specifications & illustrations subject to change without notice or incurring obligations (05/15). O’Fallon, MO, © Nortek Global HVAC LLC 2015. All Rights Reserved. 7095610 (NEW)
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