Lennox VOSB Series, Installation Instructions Manual

Page 1: ...oss 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 c...

Page 2: ...cations department When the indicated lengths change from the figures stated within the report it is imperative that prior to the commencement of the refrigerant pipe work installation Lennox VRF appl...

Page 3: ...ETURN AIR DUCT OPENING SUPPLY AIR DUCT OPENING RIGHT SIDE VIEW LIQUID PIPE GAS PIPE AIR FLOW SECTION B B SUPPLY AIR DUCT OPENING AUXILIARY DRAIN CONNECTION Either Side PRIMARY DRAIN CONNECTION Either...

Page 4: ...IR DUCT OPENING 6 152 36 7 8 937 Supply Air Duct Opening 2 51 14 7 8 378 38 1 4 972 34 5 8 879 19 7 8 505 2 3 4 70 3 76 44 1 8 1120 13 1 2 343 38 1 4 972 32 7 8 835 56 3 4 1441 50 1270 12 1 8 308 5 1...

Page 5: ...Minimum Clearance Ceiling Wall Wall 1 25 mm Minimum Clearance Ceiling Suspended Minimum Service Clearance Figure 1 Minimum Installation Clearances NOTE No part of the suspended ceiling or other suppo...

Page 6: ...line radio telephone security system or intercom Electrical interference and radio frequencies from any of these sources may affect operation WARNING Do not install the unit in an area where flammabl...

Page 7: ...tighten each of the four nuts above the brackets down onto the brackets This will ensure that the unit remains level 5 It is recommended to install a field provided isolation grommet as shown in Figu...

Page 8: ...ut Filter Filter removal tab 3 Reverse these steps to reinstall the filter Be sure to reinstall the receiver if it was detached during the filter removal Figure 8 Filter Partially Removed Indoor Unit...

Page 9: ...for leaks per commissioning instructions WARNING WARNING Danger of fire Bleeding the refrigerant charge from only the high side may result in pressurization of the low side shell and suction tubing Ap...

Page 10: ...refrigerant line ports 3 Slowly loosen one of the rubber plugs to release the factory nitrogen charge Remove the rubber plug from both liquid and gas lines 4 Connect the liquid and gas lines to the ev...

Page 11: ...drain piping is properly routed and insulatedinordertopreventbothleaksandcondensation Follow these instructions exactly to ensure proper drainage and unit operation IMPORTANT You must confirm operati...

Page 12: ...spension Rods 3 ft 1 m Support straps NOTE Drain line should be sloped 1 4 inch per foot 18 mm per m AWAY from unit and should be supported as needed to prevent sagging Do not overtighten drain fittin...

Page 13: ...tight to avoid strain on wiring Insecure wiring connections may result in equipment failure and risk of fire Wiring must be installed so that all cover plates can be securely closed Do not attempt to...

Page 14: ...230V 1Ph 60Hz Power supply Mode Selection Box Indoor unit Indoor unit Indoor unit Dedicated breaker Service Disconnect L1 L2 L1 L2 Fuse Service Disconnect L1 L2 Fuse Service Disconnect L1 L2 Fuse Serv...

Page 15: ...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 Outdoor...

Page 16: ...Terminal Block HA HB 12V COM P Q Ground cable shield to Indoor Unit chassis Tightening torque for the terminal screws Use the correct screwdriver for tightening the terminal screws If the terminal sc...

Page 17: ...valve XT1 2 PUMP CS ALARM SVD Solenoid valve Code Title T2B E U L B T2A WHITE T1 T0 RED ACK L B TA C A L B K T2 Outlet air temperature sensor To wired controller power Display Board NOTE Component in...

Page 18: ...ntent E0 E1 E2 E4 E5 Mode conflict Communication error between indoor and main outdoor unit T0 Inlet air temperature sensor malfunction TA Outlet airtemperature sensor malfunction T2B Outlet of evapor...

Page 19: ...o the black wire on each end or use the VRF accessory V0SNSR00P 13G99 to splice in the extension cable 6 Locate the return air thermistor to the conditioned area of which the indoor unit serves Figure...

Page 20: ...function T2B Outlet of evaporator sensor malfunction T2A Inlet of evaporator sensor malfunction Error Content Error code FE Eb U4 Ed EE F8 No address EEV malfunction MS self inspection error Outdoor u...

Page 21: ...fixed plastic mounting brackets on the back of the receiver Figure 26 into the two slots on the bottom of the electrical control box Figure 25 and slide to secure it 3 Connect the 10 conductor wire o...

Page 22: ...emote controller No Content Recorded Value Date 0 Normal display 1 Communication address of indoor unit 2 Indoor unit capacity horsepower 3 Network address of indoor unit 4 The actual setpoint tempera...

Page 23: ...er power has been broken and restored at the disconnect switch or circuit breaker call VRF Technical Support 1 844 438 8731 Error Code Description FE No address E0 Mode conflict E1 Communication error...

Page 24: ...24 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...