Lennox VWMA007S4 Installation Instructions Manual

Vwma wall-mounted indoor units

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©2015 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE OWNER FOR
FUTURE REFERENCE
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
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-
specifi ed parts.
Do not use this system if any part has been under
water. A fl ood-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.
The State of California has determined that this
product may contain or produce a chemical or
chemicals, in very low doses, which may cause
serious illness or death. It may also cause cancer,
birth defects, or reproductive harm.
CAUTION
!
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal edges.
Be careful when you handle this equipment.
INSTALLATION
INSTRUCTION
VWMA Wall-Mounted Units
VRF SYSTEMS -- Indoor Units
507462-02
10/2015
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 specifi ed in the Product Specifi cations
(EHB) bulletin.
General
The VWMA wall-mounted indoor units are matched with an
outdoor heat recovery or heat pump unit to create a VRF
(variable refrigerant fl ow) system that uses HFC-410A
refrigerant.
Refer to the Product Specifi cation bulletin (EHB) for the
proper use of these indoor units with specifi c 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 or national codes in any way.
Authorities having jurisdiction should be consulted before
installation.
Shipping and Packing List
Check the components for shipping damage. If you fi nd any
damage, immediately contact the last carrier.
Package 1 of 2 contains the following:
1 - Assembled indoor unit with mounting bracket
8 - Mounting bracket securing screws
8 - Plastic screw anchors
1 - Roll tape
1 - Flexible condensate drain pipe
1 - Wall sleeve
1 - Plastic cover for wall sleeve
1 - Resistor
1 - Brass fl are nut
1 - Installation manual
Not for use with V0CTRL90 Auxiliary Heat Relay.
See Service and Application Note VRF-15-01.
1

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Summary of Contents for Lennox VWMA007S4

  • Page 1: Installation Instruction

    INSTALLATION INSTRUCTION ©2015 Lennox Industries Inc. Dallas, Texas, USA VWMA Wall-Mounted Units VRF SYSTEMS -- Indoor Units 507462-02 10/2015 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.
  • Page 2: Safety Requirements

    Safety Requirements WARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD. Do not touch the unit or the controller if your hands are wet. DO NOT spray water on the indoor unit for any reason. Do not replace a fuse with a fuse of a different rating. Do not use a jumper wire to replace a fuse. Do not insert your hands, tools or any other item into the air intake or air outlet at either the indoor or outdoor unit.
  • Page 3: Top View

    Unit Dimensions - inches (mm) VWMA007S4, VWMA009S4, VWMA012S4, VWMA015S4, VWMA018S4 4-1/2 (114) TOP VIEW 3-1/4 (83) 9 (229) SIDE VIEW FRONT VIEW SIDE VIEW Size 007, 009, 012 11-3/8 28-7/8 27-1/4 015, 018 42-1/4 1073 12-3/8 35-1/8 33-1/8 VWMA024S4, VWMA030S4...
  • Page 4: Front View

    Clearances WALL WALL Vertical Clearance - Clearance to Ceiling - 6 inches (152 mm) Minimum (127) (127) Minimum Minimum FRONT VIEW Vertical Clearance - Clearance to Floor - 72 inches (1829 mm) Minimum NOTE - Provide 96 inches (2438) clearance to floor for best performance Indoor Unit Placement WARNING AVOID...
  • Page 5: Determining Wall Mounting Plate Location

    4. Use the wall mounting plate as a template to determine level on the wall. the exit point for utility bundle. Mark the wall to facilitate drilling hole for utility bundle. VWMA007S4, VWMA009S4 and VMWA012S4 Units Wall Mounting Bracket Outline of Indoor Unit VWMA015S4 and VWMA018S4 Units...
  • Page 6: Wall Sleeve Installation

    WALL SLEEVE INSTALLATION INSTALL UNIT ON WALL MOUNTING PLATE The utility bundle may be routed out of the back of the unit 1. A length of fi eld-provided fl exible condensate piping or out either side. If the bundle is to be routed out the back should be connected to the drain prior to securing the through an external wall, use a fi...
  • Page 7: Refrigerant Piping Connections

    Refrigerant Piping Connections WARNING Table 1. Refrigerant Piping Connections Refrigerant leaks are unlikely; however, if a refrigerant leak Size Liquid Line Vapor Line occurs, open a door or windows to dilute the refrigerant (Btuh) in the room. Turn off the unit and all other appliances that may cause a spark.
  • Page 8 1. Make a water-tight connection between the fi eld- Table 2. Flare Nut Torque Recommendations provided condensate drain line and the fl exible condensate connector. Outside Recommended No torque wrench Diameter Torque available 2. See fi gure 10 for applications including a single unit Finger tighten and and a single drain.
  • Page 9: Wiring Connections

    Wiring Connections 1. Lift indoor unit front panel to access the control box over. Remove the screw(s) securing the cover. Remove WARNING the plate. Isolate the power supply before accessing unit 2. Locate the terminal strip in the control box. Connect the electrical terminals.
  • Page 10: Main Control Board

    WHITE(GRAY) ANION DISPLAY BOARD WHITE GROUND GROUND WIRED CONTROLLER CN20 CN15 CN21 (BLUE) (WHITE) (RED) (WHITE) ENC1 POWER_S CN10 WHITE REMOTE CN14 ON / OFF YELLOW (WHITE) CN13 YELLOW XS1XP1 MAIN CONTROL BOARD WEEKLY TIMER TROLLER CN17 CN24 (WHITE) (WHITE) HEAT CN16 (RED)
  • Page 11 REMOTE ON / OFF ON/OFF DISPLAY BOARD WHITE(GRAY) WHITE BLACK WHITE GROUND WIRED CN14 CONTROLLER COMON/OFF ENC1 POWER_S (YELLOW) WEEKLY TIMER CN15 TROLLER CN10 WHITE (WHITE) (RED) MAIN CONTROL BOARD (RED) CN24 (WHITE) (BLUE) (WHITE) (BLUE) BLUE HEAT_N HEAT_L (YELLOW) (WHITE) J1J2 GROUND...
  • Page 12 Outdoor unit Outdoor unit Outdoor unit (main unit) (sub1 unit) (sub2 unit) (H1 H2 E) (H1 H2 E) (H1 H2 E) (PQE) (PQE) (PQE) Ground cable shield DO NOT connect to E (PQE) (PQE) Install a terminating resistor at the last indoor unit terminals P and Q of the daisy chain and for each individual unit when connected directly to an MS Box port.

This manual is also suitable for:

Vwma009s4Vwma012s4Vwma015s4Vwma018s4Vwma024s4Vwma030s4

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