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QUICK START GUIDE
Heat Pump
Thank you for choosing our product.
Please read this Quick Start Guide carefully before
operation and retain it for future reference.
To download an electric version of this manual visit
www.greecomfort.com/multipro-quick-start-guide
CAT NO:GREE_MULTIPRO_QUICK_START_10222024
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Summary of Contents for Gree MULTIPRO GMV-V WL/C-T Series
- Page 1 QUICK START GUIDE Heat Pump Thank you for choosing our product. Please read this Quick Start Guide carefully before operation and retain it for future reference. To download an electric version of this manual visit www.greecomfort.com/multipro-quick-start-guide CAT NO:GREE_MULTIPRO_QUICK_START_10222024...
- Page 2 PLEASE READ FIRST NOTE • This document does not apply to Ultra Heat “B” Models (GMV-XXWL/B-T(U) Although like Mini-Split heat pump systems, MultiPRO Heat Pump Systems have key installation differences. 1. Line Voltage Power Supply to Indoor and outdoor units are separate circuits. 2.
- Page 3 COMMUNICATION WIRING • All control wiring is 18 AWG,2-Conductor, Stranded • Shielding is not required, but if used, must tie together, following the daisy chain (parallel) configuration of the control wiring, and grounded only at the outdoor unit • 120 ohm ¼ watt resistor is shipped with outdoor unit and is connected at the last indoor unit G RE E MU LTI PRO Q UI CK STA RT G UI D E...
- Page 4 AUTO ADDRESS NOTE • Indoor Units will auto address randomly selecting the Main Indoor Unit • Main Indoor unit can be changed using the wired controller or wireless remote. Setting the Main indoor unit • For wired controllers, set the Main indoor unit within the controllers settings menu •...
- Page 5 WALL MOUNT CONTROLLER CONNECTION • H1 H2 Wired Controller Connections • Remove Black Molex • Connect H1 and H2 to the Yellow and White wires GR E E MULT I PRO Q UI CK START G U ID E...
- Page 6 CENTRAL CONTROL / COOLAUTOMATION WIRING AND ADDRESS SET UP NOTE • This only applies if there is more than one Condenser that will have a Central Controller or has CoolAutomation. • Before Applying power to the Condenser • Make sure G1 and G2 are wired in daisy chain between outdoor units. •...
- Page 7 Address DIP1 DIP2 DIP3 DIP4 DIP5 REFRIGERANT PIPING INSTALLATION GUIDELINES & DESCRIPTIONS Refrigerant Piping • Heat Pump has two pipes, liquid and gas • Both must be insulated • System mode is set by a user-determined Main indoor unit • Twenty inches must be maintained between elbows, headers, and Y-Branches Liquid G R E E MULT I PRO Q U ICK STA RT G U ID E...
- Page 8 Y-Branches • Specially designed for even distribution of refrigerant • Each kit includes one Y-Branch for gas and one Y-Branch for liquid • Simply use a tubing cutter for larger line sets • If installed horizontally, they must be level •...
- Page 9 SINGLE ZONE 2 and 2.5T 3, 4, and 5T 3, 4, and 5T Single Zone Piping Limits Standard Standard Ultra Max Length ODU to IDU: (Ac- 328' 394' 213' tual) Max Height ODU Above IDU: 164' 164' Max Height ODU Below IDU: 131' 131' Single Zone MultiPRO...
- Page 10 DUAL AND MULTI ZONE MULTIPRO Dual/Multi Zone Piping Limits 2 and 2.5T 3, 4, and 5T Max Length IDU to Y-Branch or Header: Max Length IDU to Y-Branch or Header: Max Height ODU Above IDU: Max Height ODU Below IDU: Note: these are basic limitations.
- Page 11 GMV-VXXWL/C-T(U) Ultra Units all have 3/4” Gas Pipe Service Valves • 3- and 4-Ton Use 5/8” Gas Pipe • 5 Ton Uses 3/4” Gas Pipe • Using the Provided Dog Legs will allow connection to 5/8” or 3/4” pipe. GMV-VXXWL/C-T(U) Have compressor shipping brackets that must be removed.
- Page 12 NITROGEN PRESSURE TEST • Once piping is complete, pressure test the system through both service valves • Start at 150 psi and hold for 3 minutes • Increase to 325 and hold for 5 minutes • Increase to 500 and hold for 1 hour EVACUATION •...
- Page 13 ADDITIONAL REFRIGERANT CHARGE For These Models • GMV-24WL/C-T(U) • GMV-28WL/C-T(U) • GMV-36WL/C-T(U) • GMV-48WL/C-T(U) • GMV-60WL/C-T(U) • Use only the liquid line for calculating additional refrigerant charge. • Only 1/4” and 3/8” are used. • Multiply each length by the ounces per foot in the chart! •...
- Page 14 These models must use system builder or selection software for additional charge amount. • GMV-V36WL/C-T(U) • GMV-V48WL/C-T(U) • GMV-V60WL/C-T(U) START UP • Power on all indoor units • All should display AO on unit display and/or wired controller • Units without a display likely don’t have power •...
- Page 15 DEBUG PROCESS (Continued) • Unit now displays 15 and AC for cooling or 16 and AH for heating • Mode of operation is determined by outdoor ambient • System is calibrating itself based on number of indoor units and piping lengths •...
- Page 16 DUCTED UNIT BLOWER STATIC SETTING Fan static is a parameter setting 1 – 9 in the wired controller default is 5. Making these adjustments will verify airflow is acceptable and will allow the blower to modulate speed in Auto mode. Refer to controller owner’s manual for static adjustment.
- Page 17 MAIN UNIT EXPLANATION • The Main indoor unit determines the mode for the system • All other indoor units will not be able to select the opposite mode • With wired controllers, this means that the opposite mode will not display •...
- Page 18 NOTES...
- Page 19 NOTES...
- Page 20 U.S. CONTACT INFORMATION TRADEWINDS, LLC E-mail: info@twclimate.com Contractor Support: 888-850-7928 I Mon-Fri 8 AM - 5 PM EST G R E E C O M F O R T . C O M...
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