Lennox VPB H4-3P Series Installation & Operation Instructions Download Page 28

Page: 28 / 36

Figure 30. Typical Communication Wiring

Refrigerant Piping

Outdoor Unit

(PQ)

Refrigerant Piping

P Q

All Drain Wires will connect from outdoor unit chassis to indoor unit chassis at the end of the signal

run.

18 GA., stranded, 2-conductor, shielded control wire (polarity sensitive).

Typical Wiring Diagram, NEC/CEC and Local Codes apply.

Install a terminating resistor (Ω120) on terminals P&Q on the indoor unit

which is furthest from the outdoor unit.

Coil

AHU

Control Kit

Indoor Unit

Header Pipe Kit

V8HDRK04

Header Pipe Kit

V8HDRK04

Header Pipe Kit

V8HDRK04

Refrigerant Piping

(PQ)

Outdoor Unit

Refrigerant Piping

Coil

AHU

Control Kit

Indoor Unit

P Q

All Drain Wires will connect from outdoor unit chassis to indoor unit chassis at the end of the signal

run.

18 GA., stranded, 2-conductor, shielded control wire (polarity sensitive).

Typical Wiring Diagram, NEC/CEC and Local Codes apply.

Install a terminating resistor (Ω120) on terminals P&Q on the indoor unit

which is furthest from the outdoor unit.

Header Pipe Kit

V8HDRK04

Header Pipe Kit

V8HDRK04

Figure 29. Typical Communication Wiring

Summary of Contents for VPB H4-3P Series

Page 1: ...he gas supplier Failure to follow safety warnings and these instruc tions exactly could result in property damage dan gerous operation serious injury or death Any additions changes or conversions requ...

Page 2: ...VSS piping report is an engineered design that must be followed The piping diagram or diagrams included within the LVSS report have been prepared based on the information provided to the Lennox VRF ap...

Page 3: ...400 13 3 4 349 12 5 8 321 3 4 19 23 5 8 600 6 152 CC CENTER OF GRAVITY DD BB AA EE FF Dimensions Inches mm CORNER WEIGHTS CENTER OF GRAVITY Model No AA BB CC DD EE FF lbs kg lbs kg lbs kg lbs kg in mm...

Page 4: ...0 Minimum Service Clearance 12 305 Minimum 79 2007 Minimum 24 610 Minimum Service Clearance 12 305 Min 118 2997 Min 118 2997 Min 20 508 Min 79 2007 Min Back to Back Facing Units Front to Back Wall or...

Page 5: ...hes 102 mm above the roof or ground surface to avoid ice build up around the unit Locate the unit above a load bearing wall or area of the roof that can adequately support the unit Consult local codes...

Page 6: ...ab or Frame Brackets are provided at the base of the outdoor unit so that it can be secured to a field provided slab or frame Use lag bolts or equivalent to secure the outdoor unit to the slab or fram...

Page 7: ...round the air inlet and the air outlet The unit must not be installed in areas where a flammable gas leak may occur Figure 4 Unit on Pedestal Stand Above Snow Line Protective canopy Front View Side Vi...

Page 8: ...ion examples are Construct a wind barrier Size barrier at least the same height and width as outdoor unit Install a barrier 12 inches 305 mm minimum from the sides of the unit in the direction of prev...

Page 9: ...In addition to insulating each line of piping buried lines must rest inside a sealed watertight conduit The conduit must be designed so it cannot collect and retain water NOTE Minimum clearances appl...

Page 10: ...r the unit NOTES Louver angle should not exceed 15 Installing the Unit Inside of Building Mini VRF outdoor units may be installed indoors if the following guidelines are followed Refer to Figure 12 fo...

Page 11: ...it Makeup air requirements are equal to or greater than discharge air volume Size makeup air openings appropriately to supply adequate air for the outdoor unit Unit clearances apply Check fan load amp...

Page 12: ...eup air requirements are equal to or greater than discharge air volume Size makeup air openings appropriately to supply adequate air for the outdoor unit Unit clearances apply Check fan load amps FLA...

Page 13: ...ing connections Both liquid and gas vapor lines must be individually insulated Model Liquid Line Gas Vapor Line VPB036H4 VPB048H4 VPB060H4 3 8 in 3 4 in Table 1 Refrigerant Piping Connections WARNING...

Page 14: ...outdoor unit each indoor unit re quires a separate branch pipe to connect both the liquid and gas vapor line to the system Install these optional devices per the installation instructions pro vided wi...

Page 15: ...ver tighten a flared joint Flared connections should always be accessible and must be insulated to prevent condensation IMPORTANT The compressor in this unit contains PVE oil Polyvinylether PVE oil is...

Page 16: ...Length Actual 492 ft 150 m L1 L2 L3 L4 L5 L6 A B C D E Maximum Piping Length Actual Length 296 ft 90 m L1 L3 L4 L5 L6 E Equivalent Length 328 ft 100 m Pipe length from the first line branch pipe to fa...

Page 17: ...ption Designation Main Outdoor Pipe from outdoor unit to header pipe kit L1 Indoor Unit Pipe from header pipe kit s to indoor units A B C D A B C Indoor unit 20m L1 8m Maximum Permitted Refrigerant Pi...

Page 18: ...ght Difference Maximum Permitted Length Piping Pipe Length Total Piping Length Actual 492 ft 150 m L1 A B C D E F L3 L4 Maximum Piping Length Actual Length 296 ft 90 m L1 L4 A L1 L4 B L1 L4 C L1 L4 D...

Page 19: ...Length Piping Pipe Length Total Piping Length Actual 492 ft 150 m L1 A B C D E F G H L3 L4 L5 L6 Maximum Piping Length Actual Length 296 ft 90 m L1 L4 L6 A L1 L4 L6 B L1 L4 L6 C L1 L4 L6 D L1 L4 L5 E...

Page 20: ...More than 148 ft 45 m 3 4 in VPB048H4 4 Ton Less than 148 ft 45 m 5 8 in 3 8 in 7 More than 148 ft 45 m 3 4 in VPB060H4 5 Ton Less than 148 ft 45 m 3 4 in 3 8 in 9 V8IDBP01 More than 148 ft 45 m 7 8 i...

Page 21: ...in 3 8 in VHIB Concealed High Static Ducted 012 015 1 2 1 4 024 030 036 048 054 5 8 in 3 8 in 072 7 8 in 3 8 in VOSB Outside Air Unit 036 048 054 072 5 8 in 3 8 in 072 7 8 in 3 8 in VMDB Concealed Me...

Page 22: ...essure test specifications in table 1 and the triple evacuation process de scribed on this page to pressure test and evacu ate the system Use a vacuum pump capable of evacuating to lower than 500 Micr...

Page 23: ...Calculate the additional refrigerant charge using the diameter and length of the liquid pipe only using Table 4 below 2 Calculate the additional refrigerant charge for each liquid line branch pipe ki...

Page 24: ...a damaged power cord Do not modify the power cord in any way Do not attempt to extend the length of the power cord or use an extension cord with this appliance Do not share the single power outlet wi...

Page 25: ...perature over low protection A0 Emergency Stop SW4 3 OFF Reserved Factory default TRANS THANS OUT TRANS IN CN51 TR TR H PR L PR CN12 CN14 H YL CN8 T5 T3 T4 CN9 XS7 XP7 XS5 XP5 XS6 XP6 XS8 XP8 EEV CN22...

Page 26: ...nit J Box L2 L1 Indoor Unit J Box L2 L1 Indoor Unit J Box L2 L1 Indoor Unit J Box Figure 26 Typical Low Voltage Field Wiring Outdoor Unit 18 GA 2 conductor stranded shielded control wire polarity sens...

Page 27: ...the indoor unit which is furthest from the outdoor unit Indoor Unit Indoor Unit Indoor Unit Outdoor Unit Refrigerant Piping PQ Coil AHU Control Kit Indoor Unit Indoor Unit Indoor Unit P Q All Drain W...

Page 28: ...it Indoor Unit Indoor Unit Indoor Unit Indoor Unit Header Pipe Kit V8HDRK04 Header Pipe Kit V8HDRK04 Header Pipe Kit V8HDRK04 Refrigerant Piping PQ Outdoor Unit Refrigerant Piping Coil AHU Control Kit...

Page 29: ...29 Outdoor Unit Main Control Board SW4 SW3 ENC2 Display SW2 SW1 Figure 31 Typical Outdoor Unit Main Board...

Page 30: ...ty Mode Rules in favor of quantity of indoor units Cooling Only ON 1 2 3 System Demand Majority Mode Rules per capacity Default factory setting ON 1 2 3 Heating Priority ON 1 2 3 Reserved ON 1 2 3 ENC...

Page 31: ...bient temperature Actual value in C 7 T5 Compressor discharge temperature If T5 99 it will only show the front two digits of the actual temperature For example it will show 10 when T5 is 105 8 Reserve...

Page 32: ...ed and will operate semi indepen dently from refrigerant pressures and temperatures Cooling and heating capacity demands will not be observed during this period Indoor units are in the cooling mode an...

Page 33: ...if no alternate heat is used 2 7F 3 10F 4 15F 5 20F 6 30F 7 40F 8 35F 9 40F 10 45F 11 50F 12 55F 13 60F 14 65F 15 70F 16 75F 17 80F 5 Indoor Unit Temperature Unit 0 F 1 C Access Service Menu Press SW...

Page 34: ...all controllers restricting end user s operation this is to include centralized controllers as well Compressor frequency fan speeds and EXV positions will be elevated and will operate semi indepen de...

Page 35: ...35...

Page 36: ...36 Technical Support 1 844 GET VRF1 1 844 438 8731 vrftechsupport lennoxind com www LennoxVRF com Download the app from the Apple App Store or the Google Play store...

Search results

Summary of Contents for VPB H4-3P Series

Reviews:

Related manuals for VPB H4-3P Series

Brands by name

Popular brands

Lennox VPB H4-3P Series, Installation & Operation Instructions

Search results

Summary of Contents for VPB H4-3P Series

Reviews:

Related manuals for VPB H4-3P Series

Brands by name

Popular brands