background image

1

©2017 Lennox Industries Inc. Dallas, Texas, USA

INSTALLATION

INSTRUCTIONS 

THIS MANUAL MUST BE LEFT WITH THE OWNER 

FOR FUTURE REFERENCE

Shipping and Packing List 

General

Check the components for shipping damage. If you 

find any damage, immediately contact the last carrier. 

Package 1 of 1 contains the following:
1 - Assembled indoor unit
2 - Condensate plugs
2 - Rubber grommets
1 - Water level switch cable
1 - 5/8 to 1/2 adapter (VVCB012)
1 - 3/8 to 1/4 adapter (VVCB012)
1 - Installation manual
5 - Zip ties
1 - Plastic cable clamp & screw

VVCB Vertical Air Handler 

The VVCB air handler is designed for indoor installation 

only. As shipped, the unit is ready for installation in upflow 

and horizontal-right air discharge applications. Field-

configurable for horizontal left-air discharge.

The unit has accessible electrical controls, refrigerant 

piping connections and an internally mounted expansion 

valve kit. This unit is also equipped with variable speed 

blower motor. 

Refer to the Product Specification bulletin (EHB) for the 

proper use of these indoor units with specific heat pumps, 

heat recovery units, mode switching devices, branch 

pipes, line sets and controls. 
These instructions are intended as a general guide and do 

not supersede local codes in any way. Consult authorities 

having jurisdiction before installation.
The air handler is shipped from the factory completely 

assembled.  This  unit  is  provided  with  flanges  for 

connecting the supply plenum.

VRF

VRF SYSTEMS -- Air Handler 

507895-02

01/2019

 WARNING

Improper installation, adjustment, alteration, ser vice or 

maintenance can cause property damage, personal 

injury or loss of life.

Installation and service must be performed by a li censed 

professional HVAC installer, service agency or the 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 required in order 

for the appliance to satisfactorily meet the ap plication 

needs must be made by a licensed profes sional HVAC 

installer (or equivalent) using factory-specified parts.

Do not use this system if any part has been under water. 

A  flood-damaged  appliance  is  extremely  dan gerous. 

Immediately call a licensed professional HVAC service 

technician (or equivalent) to inspect the system and to 

replace all controls and electrical parts that have been 

wet, or to replace the system, if deemed necessary.

 IMPORTANT

The Clean Air Act of 1990 bans the intentional venting 

of refrigerant (CFCs, HCFCs and HFCs) as of July 1, 

1992. Approved methods of recovery, recycling or 

reclaiming must be followed. Fines and/or incarceration 

may be levied for noncompliance. These units must be 

installed as a part of a matched system as specified in 

the Product Specifications (EHB) bulletin.

 CAUTION

As with any mechanical equipment, contact with sharp 

sheet metal edges can result in personal injury. Take 

care while handling this equipment and wear gloves and 

protective clothing.

Summary of Contents for VVCB

Page 1: ...h flanges for connecting the supply plenum VRF VRF SYSTEMS Air Handler 507895 02 01 2019 WARNING Improper installation adjustment alteration ser vice or maintenance can cause property damage personal...

Page 2: ...voided Note Only Lennox VRF indoor units will work with Lennox VRF outdoor units and associated mechanical equipment Lennox Mini Split indoor units are similar in appearance but must not be connected...

Page 3: ...8 549 10 1 4 260 SUPPLY AIR 17 7 8 454 SUPPLY AIR 1 1 4 32 SUCTION LINE LIQUID LINE RETURN AIR RETURN AIR RETURN AIR SUPPLY AIR 20 3 4 527 18 1 2 470 19 3 4 502 45 3 4 1162 3 4 19 3 76 13 3 4 349 1 5...

Page 4: ...365 B 22 560 C 19 1 2 495 D 24 610 E 19 1 2 495 F 20 3 8 518 G 22 3 4 578 F A G E LINE VOLTAGE INLETS Top and Either Side LOW VOLTAGE INLETS Top and Either Side 10 1 4 260 SUPPLY AIR 1 1 4 32 SUCTION...

Page 5: ...RTICAL INSTALLATION 39 3 8 39 3 8 39 3 8 7 7 8 7 7 8 7 7 8 NOTE All dimensions shown in inches 1000 mm 1000 mm 200 mm 200 mm 1000 mm 200 mm Model No 012 030 036 060 Cabinet 0 inch 0 mm 0 inch 0 mm To...

Page 6: ...ine Connection Liquid Line Connection Electronic Expansion Valve EEV Strainer Primary Drain Connection Vertical Drain Pan Auxiliary Horizontal Auxiliary Upflow Straps Drip Shield Baffle Drain Connecti...

Page 7: ...blower motor support is tight 3 motor mount bolts then check to see if wheel is secured to motor shaft before operating unit Motor mounting bolt IMPORTANT This unit is approved for installation cleara...

Page 8: ...rty damage injury or death Install the unit in a location that meets the following requirements Allow adequate space for installation service clearance piping and electrical connections and necessary...

Page 9: ...is shown in Figure 5 5 If the unit is suspended the entire length of the cabinet must be supported If you use threaded rod use a piece of angle iron or Unistrut channel attached to the unit either abo...

Page 10: ...rtical Upflow and Horizontal Right Configuration Shown T 1 T 2B T 2 Sensor Description T1 Return Air room Sensor T2 Middle of Coil Sensor T2A Entering Coil inlet Sensor T2B Leaving Coil outlet Sensor...

Page 11: ...r temperature 16 Secure T 1 sensor to top of coil See Figure 10 17 Re secure the wiring harness using clips and wire ties Do not pinch or bind wires 18 Reconnect the T2 and T2B sensors 19 Reconnect th...

Page 12: ...l with any other type of refrigerant oil Refrigerant leaks are unlikely however if a refrigerant leak occurs open a door or windows to dilute the refrigerant in the room Turn off the unit and all othe...

Page 13: ...n pressurization of the low side shell and suction tubing Application of a brazing torch to a pressurized system may result in ignition of the refrigerant and oil mixture Check the high and low pressu...

Page 14: ...ry drain The condensate drain is on the negative pressure side of the blower therefore air being pulled through the condensate line will not allow positive drainage without a proper trap 6 Route the d...

Page 15: ...ect supply air duct to the flange on top of the air handler If an isolation connector is used it must be nonflammable When sizing the return air filter grille a minimum surface area of 200 sq in per t...

Page 16: ...R84 IMPORTANT DO NOT adjust DIP switch settings Settings may only be adjusted by a trained technician as part of the com missioning procedures CAUTION This unit must be properly grounded and protected...

Page 17: ...from the outdoor unit Always follow NEC CEC and Local Codes Outdoor unit main unit L1 L2 L3 Outdoor unit sub1 unit L1 L2 L3 Outdoor unit sub2 unit L1 L2 L3 L2 L3 L1 L2 L1 208 230V 3Ph 60Hz or 460V 3Ph...

Page 18: ...wire polarity sensitive Typical Wiring Diagram NEC CEC and Local Codes apply Outdoor unit Outdoor unit sub1 unit Outdoor unit sub2 unit PQ main unit PQ MS Box PQ PQ MS Box PQ PQ H1 H2 H1 H2 H1 H2 Out...

Page 19: ...eat Pump System Tightening torque for the terminal screws Use the correct screwdriver for fighting the terminal screws If the screwdriver blade is too small the head of the screw might be damaged and...

Page 20: ...XP2 XP3 1 S X 2 S X 3 S X T2 Middle of evaporator Sensor YELLOW GRAY WHITE BLUE RED BLACK CN17 CN30 To wired controller comm bus To outdoor indoor MS units comm bus XT2 HA HB 12V COM Q P To wired cont...

Page 21: ...0 28 8 30 240 5 0 17 100 3 0 29 8 30 7 5 kW V8EH0080P 1P 13P63 208 5 6 19 200 3 0 37 8 4 40 5 220 6 3 21 500 3 0 39 8 4 40 5 230 6 9 23 500 3 0 41 8 45 5 240 7 5 25 600 3 0 42 8 45 5 VVCB024H4 Descri...

Page 22: ...50 3 60 6 220 8 4 28 700 4 2 53 3 60 6 230 9 2 31 400 4 2 55 3 60 6 240 10 0 34 100 4 2 57 3 60 6 VVCB030H4 Description Input Blower Motor Full Load Amps 2 Minimum Circuit Ampacity 3 Maximum Overcurr...

Page 23: ...3 4 40 220 6 3 21 500 4 2 41 3 45 230 6 9 23 500 4 2 42 3 45 240 7 5 25 600 4 2 44 3 45 10 kW V8EH0100P 1P 13P64 208 7 5 25 600 4 2 50 3 60 220 8 4 28 700 4 2 53 3 60 230 9 2 31 400 4 2 55 3 60 240 10...

Page 24: ...2 4 45 220 6 3 21 500 5 7 43 2 45 230 6 9 23 500 5 7 44 2 45 240 7 5 25 600 5 7 46 2 50 10 kW V8EH0100P 1P 13P64 208 7 5 25 600 5 7 52 3 60 220 8 4 28 700 5 7 55 3 60 230 9 2 31 400 5 7 57 3 60 240 10...

Page 25: ...000 6 0 55 6 24 1 60 4 30 79 7 80 6 230 13 8 47 000 6 0 57 6 25 1 60 4 30 82 7 90 6 240 15 0 51 000 6 0 59 6 26 1 60 30 85 7 90 6 20 kW V8EH0200P 1P 13P76 208 15 0 51 200 6 0 52 6 45 1 60 4 50 97 7 10...

Page 26: ...4 112 130 149 169 192 214 235 30 2 5 Ton L 750 54 70 87 103 118 136 157 171 191 M 870 83 103 121 142 159 182 195 217 239 H 1000 119 142 164 185 212 233 257 286 304 36 3 Ton L 900 52 73 92 119 157 184...

Page 27: ...screws remove filter cabinet cover See Figure 19 2 Remove air filter 3 Clean the air filter using vacuum or water For heavy accumulations use soft brush and mild detergent See Figure 20 4 Dry filter c...

Page 28: ...lectrical control box 1 Remove receiver from accessories package 2 Insert the two fixed plastic mounting brackets on the back of the receiver into the two slots inside of the electrical control box an...

Page 29: ...r temperature T1 6 The middle coil temperature T2 7 The coil inlet temperature T2A 8 The coil outlet temperature T2B 9 The actual superheat temperature 10 The actual subcool temperature 11 Error Code...

Page 30: ...er power has been broken and restored at the disconnect switch or circuit breaker call VRF Technical Support 1 844 438 8731 Figure 23 Receiver Display Error Code Description FE No address E0 Mode conf...

Page 31: ...31 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...

Reviews: