GreenPac and GreenPac HGR Vertical Wall Mount Heat Pumps and Air Conditioners. Manufactured By:

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1 Product Manual GreenPac and GreenPac HGR Vertical Wall Mount Heat Pumps and Air Conditioners Description & Specifications... 5 Installation Start-Up Troubleshooting Parts Lists & Drawings Maintenance Warranty Manufactured By: Marvair Division of AIRXCEL, Inc. P.O. Box 400 Cordele, Georgia Seedling Drive Cordele, Georgia (229) Fax (229) marvair@airxcel.com Internet: Part # /03-2 supersedes 10/01-1

2 How to Use This Manual This manual is intended to be a comprehensive guide to Marvair s GreenPac & GreenPac HGR line of vertical packaged air conditioners and heat pumps. It contains installation, troubleshooting, maintenance, warranty, and application information. The information contained in this manual is to be used by the installer as a guide only. This manual does not supercede or circumvent any applicable national or local codes. If you are installing the GreenPac or GreenPac HGR air conditioner or heat pump, first read Chapter 1 and scan the entire manual before beginning the installation as described in Chapter 2. Chapter 1 contains general, descriptive information and provides an overview which can speed up the installation process and simplify troubleshooting. If a malfunction occurs, follow this troubleshooting sequence: 1. Make sure you understand how the unit works (Chapters 1 & 3). 2. Identify and correct installation errors (Chapter 2). 3. Refer to the troubleshooting information in Chapter Identify defective part(s) (Chapter 5). If you are still unable to correct the problem, contact the Factory for additional assistance. Please read the following Important Safety Precautions before beginning any work. Important Safety Precautions 1. USE CARE when LIFTING or TRANSPORTING equipment. 2. TRANSPORT the UNIT UPRIGHT. Laying it down on its side may cause oil to leave the compressor, resulting in DAMAGE upon START-UP. 3. TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or working on the equipment. LINE VOLTAGES ARE HAZARD- OUS or LETHAL. 4. OBSERVE and COMPLY with ALL applicable PLUMBING, ELECTRICAL, and BUILDING CODES & ordinances. 5. SERVICE may be performed ONLY by QUALIFIED and EXPERIENCED PER- SONS. * Wear safety goggles when servicing the refrigeration circuit * Beware of hot surfaces on refrigerant circuit components * Beware of sharp edges on sheet metal components * Use care when recovering or adding refrigerant Specifications subject to change without notice. Marvair 7/03 2 GreenPac 7/03-2

3 Contents GreenPac & GreenPac HGR Air Conditioners and Heat Pumps Description & Specifications 1.1 General Description Ratings and Specifications General Operation Electrical Diagrams Controls - Standard Controls - Optional Installation 2.1 Equipment Inspection Installation Requirements Installation Materials Porting & Duct Work Bracket Installation Mounting the Unit Electrical Connections Start-Up 3.1 Check-Out of Cooling Cycle Check-Out of Heating Cycle Fresh Air Adjustment Evaporator Variable Fan Speed Controller Troubleshooting 4.1 Overview Failure Symptoms Guide Compressor Troubleshooting Parts List 5.1 Parts List Drawings Periodic Maintenance Requirements 6.1 Scheduled Maintenance Warranty Information 7.1 Standard Product Warranty GreenPac 7/03-2

4 Figures Figure 1a. GreenPac & GreenPac HGR Unit Dimensions - AVP Figure 1b. GreenPac & GreenPac HGR Unit Dimensions - AVP Figure 2. Refrigerant Circuit Figure 3a. Typical Electrical Schematic - GreenPac A/C Figure 3b. Typical Electrical Schematic - GreenPac HGR A/C Figure 3c. Typical Electrical Schematic - GreenPac HP Figure 3d. Typical Electrical Schematic - GreenPac HGR HP Figure 4. Wall Mounting Detail - AVP Figure 5a. Thermostat Wiring Detail - A/C Figure 5b. Humidity Controller Wiring Detail - A/C Figure 5c. Thermostat Wiring Detail - HP Figure 5d. Humidity Controller Wiring Detail - HP Tables Table 1 Minimum Clearances Table 2 Voltage Limitations Charts Model Identification... 5 Unit Load Amps - Air Conditioner... 6 Electrical Characteristics - Air Conditioner... 6 Unit Load Amps - Heat Pump... 8 Electrical Characteristics - Heat Pump... 8 Various Static Pressures... 9 Unit Load Amps - Heat Pump w/ S Circuit Filter Size Ship Weight GreenPac 7/03-2

5 Chapter 1 GreenPac and GreenPac HGR Air Conditioners and Heat Pumps Description and Specifications 1.1 General Description The Marvair GreenPac and GreenPac HGR (Hot Gas Reheat) air conditioners and heat pumps are complete, factory assembled systems designed to provide total comfort while meeting ventilation requirements. The GreenPac and GreenPac HGR A/C and HPs are built in cooling capacities of 2 ton to 5 tons (24,000 BTUH to 60,000 BTUH). Optional electric heat is available on all models. The GreenPac and GreenPac HGR units both have the factory installed Marvair GreenWheel ERV. The GreenWheel ERV is a total energy wheel that can recover both sensible and latent heat with efficiencies of up to 75%. The use of the GreenWheel ERV allows compliance with ASHRAE standard ventilation requirements while keeping operating costs to a minimum. GreenPac HGR Air Conditioner or Heat Pump - In addition to the factory installed GreenWheel ERV, the GreenPac HGR unit has a Hot Gas Reheat coil. The GreenPac HGR unit provides additional dehumidification capability by working in conjunction with the GreenWheel ERV. The HGR coil permits dehumidification of the fresh and return air without overcooling the classroom. The operation of the HGR coil is controlled by humidity controller or BAS control. The GreenPac and GreenPac HGR air conditioners and heat pumps are listed by ETL and tested in accordance with UL Standard 1995, 2nd Ed. Ratings and specifications are in accordance with the applicable standards of the Air Conditioning and Refrigeration Institute. These instructions explain the recommended methods for installing the GreenPac and GreenPac HGR air conditioners and heat pumps and making the electrical wiring connections to the unit. All internal wiring is complete. The refrigeration system has been factory charged and sealed. Service ports have been provided for field service if required. MODEL IDENTIFICATION AVP Air Source Vertical Package Nominal Cooling 24 = 24,000 BTUH 30 = 30,000 BTUH 36 = 36,000 BTUH 42 = 42,500 BTUH 48 = 50,000 BTUH 60 = 58,000 BTUH Power Supply A = 208/230V, 1 Ph, 60 Hz C = 208/230V, 3 Ph, 60 Hz D = 460V, 3 Ph, 60 Hz System Type AC = Air Conditioner HP = Heat Pump Special Option Code G = HGR (Hot Gas Reheat) Configuration H = GreenWheel ERV Electric Heat 00 (None) 8 kw 4 kw 9 kw 5 kw 10 kw 6 kw 15 kw SERIAL NUMBER DATE CODE A = January J = September L = 2000 V = 2008 B = February K = October M = 2001 W = 2009 C = March L = November N = 2002 D = April M = December P = 2003 E = May R = 2004 F = June S = 2005 G = July T = 2006 H = August U = GreenPac 7/03-2

6 1.2 Ratings & Specifications GreenPac & GreenPac HGR Air Conditioners Cooling Performance Chart (BTUH) - GreenPac & GreenPac HGR Air Conditioners OUTDOOR AMBIENT DRY BULB TEMPERATURES MODEL 75 F 80 F 85 F 90 F 95 F 100 F 105 F 110 F 115 F 24 25,900 25,600 24,900 24,400 24,000 23,000 22,500 21,900 21, ,000 32,300 31,200 30,300 29,400 28,500 28,000 27,100 26, ,700 38,200 37,200 36,100 35,600 34,300 33,400 32,400 31, ,200 45,600 44,600 43,000 41,500 39,900 37,900 35,200 33, ,900 50,700 49,700 48,900 48,000 45,500 42,800 40,500 38, ,600 60,200 59,000 58,100 57,000 53,600 50,700 47,900 45,600 Rated indoor air flow at 80 F DB/67 F WB indoor. Electrical Characteristics - GreenPac & GreenPac HGR Air Conditioners BASIC COMPRESSOR OUTDOOR FAN MOTOR INDOOR FAN MOTOR GREENW HEEL MODEL VOLTS Hz/Ph RLA LRA VOLTS Hz/Ph RPM FLA HP VOLTS Hz/Ph RPM FLA HP VOLTS Hz/Ph RLA AVP24ACA 208/230 60/ /230 60/ /5 208/230 60/ /5 208/230 60/1 2.2 AVP30ACA 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP36ACA 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP42ACA 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP48ACA 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP60ACA 208/230 60/ /230 60/ /6 208/230 60/ /4 208/230 60/1 2.2 AVP24ACC 208/230 60/ /230 60/ /5 208/230 60/ /5 208/230 60/1 2.2 AVP30ACC 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP36ACC 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP42ACC 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP48ACC 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP60ACC 208/230 60/ /230 60/ /3 208/230 60/ /4 208/230 60/1 2.2 AVP24ACD / /230 60/ /5 208/230 60/ /5 208/230 60/1 2.2 AVP30ACD / /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP36ACD / /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP42ACD / /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP48ACD / /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP60ACD / /230 60/ /3 208/230 60/ /4 208/230 60/1 2.2 RLA = Rated Load Amps LRA = Locked Rotor Amps FLA = Full Load Amps RPM = Revolutions Per Minute HP = Horsepower Unit Load Amps - GreenPac & GreenPac HGR Air Conditioners BASIC AIR COND. LOAD OF RESISTIVE HEATING ELEMENTS ONLY* TOTAL HEATING AMPS (MAX.) MODEL AMPS (MAX.) 04 kw 05 kw 06 kw 08 kw 09 kw 10 kw 15 kw 04 kw 05 kw 06 kw 08 kw 09 kw 10 kw 15 kw AVP24ACA AVP30ACA AVP36ACA AVP42ACA AVP48ACA AVP60ACA AVP24ACC AVP30ACC AVP36ACC AVP42ACC AVP48ACC AVP60ACC AVP24ACD AVP30ACD AVP36ACD AVP42ACD AVP48ACD AVP60ACD * In Amps Heating kw shown for 240V for all HPA and HPC models. Derate by 25% for 208V service. Total heating amps for all HPA (208/230V 1ø) units with 8 kw and larger includes both circuits (#1 and #2). Heating kw shown for 480 for all HPD models. NOTE: Three phase equipment (HPC and HPD models) contain single-phase motor loads. Values shown are maximum phase loads. Loads are not equally balanced on each phase. Total heating amps includes motor loads. 6 GreenPac 7/03-2

7 Efficiency and Capacity Ratings for GreenPac & GreenPac HGR A/Cs MODEL AVP24 AVP30 AVP36 AVP42 AVP48 AVP60 COOLING BTUH 24,000 29,400 35,600 41,500 48,000 57,000 DESIGNATOR C1 C1 C1 B1 B1 D1 SEER RATED CFM 850 1,000 1,220 1,520 1,760 1,850 ESP Note: Based upon ARI Standard 210/240 conditions. All performance and capacity ratings are for a 60 Hz power supply. Ratings are also affected by altitude. Sensible to Total 95 F Dry Bulb Outside Air for GreenPac Air Conditioners MODEL TOTAL CAPACITY (BTUH) 24,000 29,400 35,600 41,500 48,000 57,000 SENSIBLE HEAT RATIO SENSIBLE CAPACITY (BTUH) 18,240 22,930 27,060 33,200 38,400 45,600 Sensible ratios based on ARI Standard 210/240 Indoor Conditions of 80 F DB/67 F WB. Sensible to Total 95 F Dry Bulb Outside Air for GreenPac HGR Air Conditioners MODEL TOTAL CAPACITY (BTUH) 24,000 29,400 35,600 41,500 48,000 57,000 SENSIBLE HEAT RATIO SENSIBLE CAPACITY (BTUH) 18,240 22,930 27,060 33,200 38,400 45,600 TOTAL CAPACITY (BTUH) 11,400 13,800 16,800 19,600 22,600 26,800 SENSIBLE HEAT RATIO SENSIBLE CAPACITY (BTUH) 6,270 7,800 9,240 11,370 13,110 15,540 LATENT CAPACITY 5,130 6,000 7,560 8,230 9,490 11,260 SenSensible ratios based on ARI Standard 240 Indoor Conditions of 80 F DB/67 F WB. ACTIVE HGR NON-ACTIVE HGR GreenPac & GreenPac HGR A/Cs Air Volume (CFM) at Various Static Pressures Cubic Feet/Minute MODEL.10 IWG.20 IWG.30 IWG ,100 1, ,310 1,220 1, ,650 1, ,900 1, ,900 1,760 IWG = Inches Water Gauge CFM = Cubic Feet/Minute 7 GreenPac 7/03-2

8 GreenPac & GreenPac HGR Heat Pumps Cooling Performance Chart (BTUH) - GreenPac & GreenPac HGR Heat Pumps OUTDOOR AMBIENT DRY BULB TEMPERATURES MODEL 75 F 80 F 85 F 90 F 95 F 100 F 105 F 110 F 115 F 24 27,100 26,500 25,600 24,700 24,000 23,400 21,800 20,700 19, ,500 32,600 31,700 30,800 30,000 28,600 26,200 24,800 23, ,300 37,400 37,000 36,200 35,600 33,900 32,200 30,500 29, ,900 45,400 43,800 43,000 42,500 39,500 37,600 35,700 34, ,900 54,200 53,100 51,800 50,000 47,900 44,900 42,700 40, ,800 63,000 61,300 58,300 56,500 54,800 53,600 51,600 48,500 Rated indoor air flow at 80 F DB/67 F WB indoor. Heating Performance Chart (BTUH) - GreenPac & GreenPac HGR Heat Pumps OUTDOOR AMBIENT DRY BULB TEMPERATURES MODEL 10 F 20 F 30 F 40 F 47 F 50 F 60 F 70 F 24 12,000 14,500 16,700 20,100 23,600 24,500 26,000 27, ,600 20,000 22,000 27,100 30,800 31,100 32,000 34, ,900 22,100 26,000 31,100 36,000 37,000 38,400 39, ,300 24,900 30,100 36,500 42,500 43,300 45,300 47, ,000 29,100 35,800 42,200 49,500 50,200 51,500 56, ,500 33,600 41,000 49,800 57,500 58,600 61,500 63,700 Rated indoor air flow at 70 F DB indoor. Electrical Characteristics - GreenPac & GreenPac HGR Heat Pumps BASIC COMPRESSOR OUTDOOR FAN MOTOR INDOOR FAN MOTOR GREENW HEEL MODEL VOLTS Hz/Ph RLA LRA VOLTS Hz/Ph RPM FLA HP VOLTS Hz/Ph RPM FLA HP VOLTS Hz/Ph RLA AVP24HPA 208/230 60/ /230 60/ /5 208/230 60/ /5 208/230 60/1 2.2 AVP30HPA 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP36HPA 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP42HPA 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP48HPA 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP60HPA 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP24HPC 208/230 60/ /230 60/ /5 208/230 60/ /5 208/230 60/1 2.2 AVP30HPC 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP36HPC 208/230 60/ /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP42HPC 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP48HPC 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP60HPC 208/230 60/ /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP24HPD / /230 60/ /5 208/230 60/ /5 208/230 60/1 2.2 AVP30HPD / /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP36HPD / /230 60/ /4 208/230 60/ /4 208/230 60/1 2.2 AVP42HPD / /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP48HPD / /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 AVP60HPD / /230 60/ /3 208/230 60/ /2 208/230 60/1 2.2 RLA = Rated Load Amps LRA = Locked Rotor Amps FLA = Full Load Amps RPM = Revolutions Per Minute HP = Horsepower Unit Load Amps - GreenPac & GreenPac HGR Heat Pumps BASIC HEAT PUMP LOAD OF RESISTIVE HEATING ELEMENTS ONLY* TOTAL HEATING AMPS (MAX.) MODEL AMPS (MAX.) 04 kw 05 kw 06 kw 08 kw 09 kw 10 kw 15 kw 04 kw 05 kw 06 kw 08 kw 09 kw 10 kw 15 kw AVP24HPA AVP30HPA AVP36HPA AVP42HPA AVP48HPA AVP60HPA AVP24HPC AVP30HPC AVP36HPC AVP42HPC AVP48HPC AVP60HPC AVP24HPD AVP30HPD AVP36HPD AVP42HPD AVP48HPD AVP60HPD *In Amps Heating kw shown for 240V for all HPA and HPC models. Derate by 25% for 208V service. Total heating amps for all HPA (208/230V 1ø) units with 8 kw and larger includes both circuits (#1 and #2). Heating kw shown for 480 for all HPD models. NOTE: Three phase equipment (HPC and HPD models) contain single-phase motor loads. Values shown are maximum phase loads. Loads are not equally balanced on each phase. Total heating amps includes motor loads. 8 GreenPac 7/03-2

9 Efficiency and Capacity Ratings for GreenPac & GreenPac HGR HPs MODEL AVP24 AVP30 AVP36 AVP42 AVP48 AVP60 COOLING BTUH 24,000 30,000 35,600 42,500 50,000 56,500 DESIGNATOR B1 B1 C1 B1 C1 C1 SEER HTG HI TEMP BTUH 23,600 30,800 36,000 42,500 49,500 57,500 HTG HI TEMP COP HTG LO TEMP BTUH 13,600 18,200 21,000 23,800 28,000 34,000 HTG LO TEMP COP HSPF REGION IV RATED CFM 850 1,000 1,200 1,520 1,760 1,875 ESP Note: Based upon ARI Standard 210/240 conditions. Ratings are also affected by altitude. Sensible to Total 95 F Dry Bulb Outside Air for GreenPac Heat Pumps MODEL TOTAL CAPACITY (BTUH) 24,000 30,000 35,600 42,500 50,000 56,500 SENSIBLE HEAT RATIO SENSIBLE CAPACITY (BTUH) 18,120 23,250 27,060 34,000 40,000 44,920 Sensible ratios based on ARI Standard 210/240 Indoor Conditions of 80 F DB/67 F WB. Sensible to Total 95 F Dry Bulb Outside Air for GreenPac HGR Heat Pumps MODEL TOTAL CAPACITY (BTUH) 24,000 30,000 35,600 42,500 50,000 56,500 SENSIBLE HEAT RATIO SENSIBLE CAPACITY (BTUH) 18,120 23,250 27,060 34,000 40,000 44,920 TOTAL CAPACITY (BTUH) 11,200 14,200 16,800 20,000 23,600 26,600 SENSIBLE HEAT RATIO SENSIBLE CAPACITY (BTUH) 6,100 7,950 9,240 11,600 13,690 15,300 LATENT CAPACITY (BTUH) 5,100 6,250 7,560 8,400 9,910 11,300 Sensible ratios based on ARI Standard 240 Indoor Conditions of 80 F DB/67 F WB. NON-ACTIVE HGR ACTIVE HGR GreenPac & GreenPac HGR HPs Air Volume (CFM) at Various Static Pressures Cubic Feet/Minute MODEL.10 IWG.20 IWG.30 IWG ,100 1, ,310 1,220 1, ,650 1, ,875 1, ,875 1,760 IWG = Inches Water Gauge CFM = Cubic Feet/Minute 9 GreenPac 7/03-2

10 GreenPac & GreenPac HGR Heat Pumps with S Circuit Unit Load Amps - GreenPac & GreenPac HGR Heat Pumps - S Circuit BASIC HEAT PUMP LOAD OF RESISTIVE HEATING ELEMENTS ONLY* TOTAL HEATING AMPS (MAX.) MODEL AMPS (MAX.) 04 kw 05 kw 06 kw 08 kw 09 kw 10 kw 15 kw 04 kw 05 kw 06 kw 08 kw 09 kw 10 kw 15 kw AVP24HPA AVP30HPA AVP36HPA AVP42HPA AVP48HPA AVP60HPA AVP24HPC AVP30HPC AVP36HPC AVP42HPC AVP48HPC AVP60HPC AVP24HPD AVP30HPD AVP36HPD AVP42HPD AVP48HPD AVP60HPD * In Amps * S Circuit Control configuration limits electrical demand by preventing simultaneous operation of the electric heat pump and the electric heat. Heating kw shown for 240V for all HPA and HPC models. Derate by 25% for 208V service. Total heating amps for all HPA (208/30V 1ø) units with 8 kw and larger includes both circuits (#1 and #2). Heating kw shown for 480 for all HPD models. NOTE: Three phase equipment (HPC and HPD models) contain single-phase motor loads. Values shown are maximum phase loads. Loads are not equally balanced on each phase. Total heating amps includes motor loads. FILTER SIZE MODEL INDOOR RETURN FILTER SIZE 24/30/ /2 x 13-1/2 x 1 Filament Spun Glass 42/48/ /2 x 15-1/2 x 1 Filament Spun Glass MODEL FRESH AIR FILTER SIZE 24/30/36 14 x 14 x 1 Washable Organic Media 42/48/60 14 x 14 x 1 Washable Organic Media SHIP WEIGHT (LBS.) Air Conditioners Heat Pumps MODEL GreenPac GreenPac HGR GreenPac GreenPac HGR GreenPac 7/03-2

11 41 1/2 43 9/ /2 MOUNTING HOLES CTR. TO CTR..3/8" SQ (10 PLC S) SUPPLY AIR DUCT 28 x 8 (NOMINAL) ELECTRICAL K.O. S 3/4 x 1Ó (4 PLACES) /16 RETURN AIR DUCT 28 x 14 (NOMINAL) 70 11/ / / /4 AIR OUTLET 18 1/4 34 1/2 2 DRAINAGE 3/4" I.D. FRONT VIEW 9 1/2 28 BACK VIEW 6 1 FLANGE TYP /16 1 1/4 2 7/16 8 CONTROL BOX COVER /16 9 9/ /16 ELECTRICAL K.O. S 1/2 x 3/4" (1 PLACE) AIR INLET 28 7/ /8 4-9/16 3-9/16 1-1/ /8 17-5/8 35-1/4 BOTTOM MTG. BRKT. W/MTG. HOLE LOCATIONS 3/8 (9 PLC'S) R.H. SIDE VIEW Figure 1a. GreenPac and GreenPac HGR Air Conditioners and Heat Pumps Dimensional Data - AVP24-36 (in inches) 11 GreenPac 7/03-2

12 42-1/8 43-1/2 MOUNTING HOLES CTR. TO CTR. 3/8" SQ (10 PLC'S) SUPPLY AIR DUCT 30 X /2 BREAKER ACCESS COVER 1-1/4 RETURN AIR DUCT 1-3/4 30 X AIR OUTLET 32-3/8 30-3/8 3/4" X 1" ELECTRICAL K.O.'S /4" ID DRAIN FLANGE WIDTH FRONT VIEW BACK VIEW 22-5/8 1-1/ HEATER ACCESS COVER 83-5/16 1-5/16 3/4" X 1" ELECTRICAL K.O.'S / /16 3/4"I.D. DRAIN AIR INLET 26-1/2 R.H. SIDE VIEW 19-3/4" 19-3/4" 41-1/2" Figure 1b. GreenPac and GreenPac HGR Air Conditioners and Heat Pumps Dimensional Data - AVP42-60 (in inches) 4-5/8" 2-1/4" 1-1/2" BOTTOM MTG. BRKT.. W/MTG. HOLE LOCATIONS 3/8" (6 PLC'S) 12 GreenPac 7/03-2

13 1.3 General Operation Refrigerant Cycle Cooling Mode (GreenPac & GreenPac HGR Units) The GreenPac and GreenPac HGR units use R-22 refrigerant in a conventional vapor-compression refrigeration cycle to transfer heat. In the cooling mode, a double blower assembly blows indoor air across the evaporator (indoor coil). Liquid refrigerant passing through the evaporator is boiled into gas by heat removed from the air. The warmed refrigerant gas enters the compressor where its temperature and pressure are increased. The hot refrigerant gas condenses to liquid as heat is transferred to outdoor air blown across the condenser (outdoor coil) by the condenser fan. Liquid refrigerant is metered into the evaporator through capillary tubes to repeat the cycle. Reversing Valve Heating Mode Cooling Mode Suction Line Discharge Line Distributor & Capillary Tubes Outdoor Coil Indoor Coil Distributor & Capillary Tubes Check Valve Compressor Filter Drier Figure 2. Refrigerant Circuit Heating Mode (Heat Pump Models Only) During heating mode a special reversing valve reverses the flow of refrigerant through the system exchanging the roles of the condenser and evaporator. Now the outdoor coil becomes the evaporator and the indoor coil becomes the condenser. The refrigerant then flows through the outdoor coil, picks up heat and becomes vaporized. The vapor then enters the compressor where it is compressed to a higher temperature. Next it is pumped to the indoor coil where the heat will be released into the room. The compressed refrigerant vapor will condense to its liquid state as it gives up heat. Finally, liquid flows through the capillary tube into the evaporator where the cycle will be repeated. Optional electric strip heat is available for all models. GreenWheel ERV Operation All models of the GreenPac and GreenPac HGR units have a factory installed GreenWheel ERV ventilation assembly. The Marvair GreenWheel ERV is a total energy (both sensible and latent) wheel that can reduce both construction and operating cost while ventilating the classroom to ASHRAE requirements. The use of the GreenWheel ERV reduces the energy load of the outside air. Exhausting stale, inside air keeps indoor pollutants and harmful gases to a minimum. The energy recovery wheel has been tested and certified according to ARI Standard How It Works During the summer, cool dry air from the classroom is exhausted through the 13 GreenPac 7/03-2

14 GreenWheel ERV to the outside. As the air passes through the rotating wheel, the desiccant becomes cooler and drier. Simultaneously, hot humid air is being pulled across the rotating wheel. The cool, dry desiccant absorbs moisture and heat from the incoming air. The cooler, drier air is mixed with the return air from the classroom and distributed throughout the room. In the winter, warm moist air is exhausted through the GreenWheel ERV to the outside. As the air passes through the rotating wheel, the desiccant becomes warmer and absorbs moisture. Simultaneously, cold dry air is being pulled across the rotating wheel. The cold, dry air absorbs heat and moisture from the desiccant. The warmed air is mixed with the return air from the classroom and distributed throughout the room. Quality Components The GreenWheel ERV cassette consists of the wheel, two blowers and the drive motor and belt. The two blowers simultaneously pull fresh air from outside and exhaust air from the classroom through the rotating wheel. The air streams are separated by an insulated partition so that the incoming fresh air is not mixed with the exhaust air. Two variable speed blowers ensure that up to 450 CFM of outside air can be brought into the room and the indoor air is properly exhausted. Variable speed blowers permit that the desired quantity of outside air is delivered into the room. An optional independent exhaust air blower control allows positive pressurization of the classroom, i.e., more outside air can be introduced through the GreenWheel ERV than is exhausted. Dehumidification Mode - GreenPac HGR Heat Pumps and Air Conditioners When the GreenPac HGR A/C or HP is in the dehumidification mode, the hot gas reheat (HGR) coil is energized. The cooled, dehumidified air exits the evaporator coil and is blown through the HGR coil. This coil is sized to the sensible capacity of the unit. The heat in the HGR coil is transferred to the air stream. The use of the HGR coil allows the indoor humidity of the classroom to be maintained at or below a humidity set point without over cooling the classroom. These units can not add humidity to the classroom. The operation of the HGR coil is controlled by a humidity controller. If the humidity rises above the set point on the controller and the temperature in the classroom is satisfied, both mechanical cooling and the HGR coil operate to temper the air and lower the humidity. If the temperature in the classroom rises above the set point of the thermostat and the unit is operating in the dehumidification mode, the need for cooling (air conditioners) or heating (heat pumps) will override the humidity controller and the HGR coil is disengaged until the thermostat is satisfied. This assures the classroom temperature is maintained as first priority and humidity control is second. 1.4 Electrical Diagrams The compressor and condenser fan are energized with a contactor controlled by a 24 VAC pilot signal. The condenser (outside fan) motor is energized by the same contactor. The compressor incorporates an internal PTC crankcase heater that functions as long as primary power is available. The heater drives liquid refrigerant from the crankcase and prevents loss of lubrication caused be oil dilution. Power must be applied to the unit for 24 hours before starting the compressor. The indoor evaporator fan motor is cycled by the blower timed delay relay. See Figures 3a, 3b, 3c. 14 GreenPac 7/03-2

15 TRANSFORMER JUMPER 5 Figure 3a. Typical Electrical Schematic Diagram GreenPac Air Conditioner 15 GreenPac 7/03-2

16 XFMR Figure 3b. Typical Electrical Schematic Diagram GreenPac HGR Air Conditioner 16 GreenPac 7/03-2

17 XFMR WIRE NUT NOTE4 Figure 3c. Typical Electrical Schematic Diagram GreenPac Heat Pump 17 GreenPac 7/03-2

18 Figure 3d. Typical Electrical Schematic Diagram GreenPac HGR Heat Pump 18 GreenPac 7/03-2

19 1.5 Controls - Standard Defrost Control (Heat Pumps Only) The defrost control is designed to control the removal of ice or frost from the outdoor coil of the heat pumps. De-icing is initiated at a pre-selected time interval (30/45/90 minutes), provided the outdoor coil is below a preset initiation temperature (26 F). The de-icing cycle is terminated as soon as the outdoor coil rises to a preset temperature (56 F) or after a preset length of time. If the outdoor coil cannot reach the desired preset temperature due to weather conditions, or a malfunction, a time-safe termination will occur after ten minutes. This termination of the de-ice cycle will restore the heat pump to the normal heat cycle. High Pressure Switch The high pressure switch is located on the system liquid line. It is electrically connected to a lock-out relay which shuts down the system if the refrigerant pressure rises to 400 PSIG. This protects the units if airflow is reduced or lost through the heat transfer surface performing the condenser function. Although the contacts of the high pressure switch close when the refrigerant pressure falls to approximately 300 PSIG, the system must be manually reset once the lock-out relay is activated. A manual reset is necessary to prevent harmful shortcycling. To reset switch, turn primary power off, then back on or turn thermostat system switch off, then back on. Loss of Charge (Heat Pumps Only) The loss of charge switch is located on the system s liquid line and when tripped, activates the lock-out relay and shuts down the system. This switch protects the heat pump if there is a loss of refrigerant. A manual reset is needed to restart the unit. To reset switch, turn primary power off, then back on or turn thermostat system switch off, then back on. Low Pressure Switch (Air Conditioners Only) The low pressure switch is mounted on the compressor suction line. It is designed to open if the refrigerant pressure drops to 35 PSIG; it resets when the pressure rises to 60 PSIG. The switch protects the unit if airflow through the indoor blower is impeded, if the blower motor fails, or if there is a loss of refrigerant. When tripped, the low pressure switch activates the lockout relay and shuts down the system. A manual reset is needed to restart the unit. To reset switch, turn primary power off, then back on or turn thermostat system switch off, then back on. Lock-out Relay The lock-out relay prevents the unit from cycling on the pressure switches by providing positive shut-down if the loss of charge or high pressure limits are exceeded. On certain thermostats, an LED will light up on the thermostat during this condition to indicate compressor fault. Once triggered, the relay must be manually reset. GreenWheel ERV Intake & Exhaust Single Blower Control Used to adjust the speed of the two blowers to vary the outside air being brought into the classroom and the classroom air that is exhausted. 19 GreenPac 7/03-2

20 1.6 Options Compressor Time Delay Prevents compressor from short cycling. Field or factory installed. Available on all units. Start Relay and Capacitor (Hard Start Kit) Used on single phase equipment to give the compressor higher starting torque under low voltage conditions. Field installed. Available on all units. (Not recommended for use on scroll compressor.) Adjustable Outdoor Thermostat (Heat Pumps Only) Will not allow electric resistance heat to be energized unless the outdoor temperature is below the desired set point. Field or factory installed. Available on all heat pumps. Evaporator Variable Fan Speed Control Manual speed control of indoor blower motor provides adjustable air volume. Field or factory installed. Available on all units. (Warning: Minimum air flow is required for proper operation.) S Circuit (Heat Pumps Only) Limits the electric demand by preventing simultaneous operation of the compressor and electric strip heat; requires only one field power circuit in most cases. Factory installed. Available on all heat pump units. Factory Installed Disconnects Available for all 460V, 3ø units. Energy Management System (EMS) Relay Kit Relay to control the unit. Available in 24, 120 or 240 VAC. Field or factory installed. Variable Fan Speed Control for GreenWheel ERV Exhaust Blower Variable speed control of GreenWheel ERV exhaust blower for separate control of the exhaust blower. When used, the standard speed controller control the intake blower and the optional, second controller operates the exhaust blower. Individual blower control allows positive pressurization of the classroom. Field installed, P/N S/ Can be factory installed. Single Point Feed When multiple internal disconnects are used, single point feed permits only one field power supply to heat pump. Field installed. Available on all units. Scroll Compressor All ratings shown on this product data sheet are for the standard reciprocating compressor. Use of a scroll compressor may change the ratings. Available on most units. (Please contact the factory for specific information.) 20 GreenPac 7/03-2

21 Chapter 2 Installation 2.1 Equipment Inspection 2.2 Installation Requirements Concealed Damage Inspect all cartons and packages upon receipt for damage in transit. Remove cartons and check for concealed damage. Important: Keep the unit upright at all times. Remove access panels and examine component parts. (Note: The bottom bracket is stored in the condenser air compartment. Remove it before replacing the side screen). Inspect refrigerant circuit for fractures or breaks. The presence of refrigerant oil usually indicates a rupture. If damage is apparent, immediately file a claim with the freight carrier. Units that have been turned on their sides or tops may have concealed damage to compressor motor mounts or to the oil system. If the unit is not upright, immediately file a claim for concealed damages and follow these steps: 1. Set unit upright and allow to stand for 24 hours with primary power turned on. 2. Attempt to start the compressor after 24 hours. 3. If the compressor will not start, makes excessive noise, or will not operate, return the unit to the freight carrier. General 1. Inspect unit for completeness. Check for missing parts (e.g. hardware). Refer to the installation kit information in section Remove access panels and check for loose wires. Tighten screw connections. 3. Complete and mail the warranty registration card. You must consider all of the following when choosing the installation site: 1. Noise. Install the unit so that the least amount of noise will be transmitted to inhabited spaces. 2. Condensate Drainage. Condensate produced during operation must be discharged to a suitable drain. 3. Defrost Drainage. Ice build up sometime occurs during the heating cycle while in heat pump operation. The automatic reversal (defrost control) of the heat pump cycle causes the ice to melt so that the heat pump may operate efficiently. Please keep this in mind while locating unit. 4. Placement. A) Place the unit in a shaded area, if possible. B) Install it above ground for protection against flooding. C) The unit exhausts air. Be sure that the airflow is not impeded by shrubbery or other obstructions. D) When installing multiple units, please note the recommended clearances noted in Table GreenPac 7/03-2

22 5. Airflow Requirements. Note the minimum CFM requirements (section 2.2). Keep duct lengths as short as possible. Do not obstruct airflow through the unit. Applications using duct work should be designed and installed in accordance with all applicable safety codes and standards. Marvair strongly recommends referring to the current edition National Fire Protection Association Standards 90A and 90B before designing and installing duct work. The duct system must be engineered to insure sufficient air flow through the unit to prevent over-heating of the heater element. This includes proper supply duct sizing, sufficient quantity of supply registers, and adequate return and filter areas. Duct work must be of correct material and must be properly insulated. The duct must be constructed of galvanized steel with a minimum thickness of.019 inches. Duct work must be firmly attached, secured, and sealed to prevent air leakage. See section 2.4 for additional duct work requirements. 6. Clearances. Note the minimum clearances required for proper operation and service. (See table 1 below). Table 1. Minimum Clearances Model Minimum Clearance Minimum Clearance Minimum Space Around Sides Between Sides Above Unit (Single Unit) (Two Units) 20/24 30 inches 18 inches 24 inches 30/36 30 inches 18 inches 24 inches 42/48/60 30 inches 30 inches 24 inches 7. Codes. Make sure your installation conforms to all applicable electrical, plumbing, building, and municipal codes. Some codes may limit installation to single story structures. 8. Electrical Supply. The power supply must have the appropriate voltage, phase, and ampacity for the model selected. Voltage must be maintained above minimum specified values listed below. Refer to the Electric Heat Ratings (section 1.2) for ampacity requirements. Table 2. Voltage Limitations Electrical Rating Designations* A C D Nominal Voltage 208/ / Phase Minimum Voltage Maximum Voltage * Letters refer to model number code designations. Refer to page Installation Materials Installation Kits The GreenPac and GreenPac HGR air conditioners and heat pumps are shipped with brackets for mounting the unit. All models have built-in side flanges that function as side brackets. All models require and are shipped with a bottom mounting bracket. There is also an air intake hood packed inside each unit. Standard Kit Components 1. One 12 Ga. L -shaped bottom bracket 22 GreenPac 7/03-2

23 Accessories The package may include other factory-supplied items (optional) as follows: PART # DESCRIPTION Heat Pump Thermostats Digital thermostat. 2 stage heat, 2 stage cool. Non-programmable. Fan switch: Auto & On. Manual changeover system switch: Cool-Off-Heat- Emergency Heat. Status LED s. F or C Digital thermostat. 2 stage heat, 2 stage cool. 7 day programmable. Fan switch: Auto & On. Auto-change over. Status LED s. Backlit display. Programmable fan. Non-volatile program memory Nonprogrammable electronic heat pump thermostat, 2 stage heat, 1 stage cool. Auto changeover, System switch: Off, Cool, Heat, Emergency heat. Fan Switch: Auto & On Lockable keypad Seven day programming. Two occupied and two unoccupied periods per day. Individual heat and cool setpoints. Manual or automatic changeover. System switch: Off, Cool, Heat, Emergency Heat. Fan Switch: Auto & On. Keypad lockout available. Ventilation terminals. No batteries required. Display indicates when Auxilary Heat or Emergency Heat are activated. Requires a subbase if used on a heat pump or a if used on an air conditioner Subbase to be used with thermostat for a heat pump. Air Conditioner Thermostats Digital thermostat. 1 stage heat, 1 stage cool. Non-programmable. Fan switch: Auto & On. Manual changeover system switch: Cool-Off-Heat. Low temperature protection. F or C Digital thermostat. 1 stage heat, 1 stage cool. 7 day programmable. Fan switch: Auto & On. Auto-change over. Keypad lockout. Non-volatile program memory Seven day programming. Two occupied and two unoccupied periods per day. Individual heat and cool setpoints. Manual or automatic changeover. System switch: Off, Cool, Heat, Emergency Heat. Fan Switch: Auto & On. Keypad lockout available. Ventilation terminals. No batteries required. Display indicates when Auxilary Heat or Emergency Heat are activated. Requires a subbase if used on a heat pump or a if used on an air conditioner Subbase to be used with thermostat for an air conditioner. Grilles VPG - 30S, 28 x 8" Adjustable, Aluminum, Double Deflection Supply Grille for AVP VPG - 40S, 30 x 10" Adjustable, Aluminum, Double Deflection Supply Grille for AVP VPG - 30RF, 28 x 14" Aluminum Return Filter Grille for AVP VPG - 40RF, 30 x 16" Aluminum Return Filter Grille for AVP Humidity Controller (Required for GreenPac HGR A/C or HP) Wall mounted type humidity controller controls operation of the hot gas reheat coil for dehumidification. Adjustable dehumidification range. Additional Items Needed Additional hardware and miscellaneous supplies (not furnished by Marvair ) are needed for installation. For example, the list below contains approximate quantities of items typically needed for mounting a unit on a wood frame wall structure with standard mounting bracket or flanges. Concrete or fiberglass structures have different requirements. 23 GreenPac 7/03-2

24 (10) 3/8" mounting bolts for side brackets. The length needed is typically the wall thickness plus one inch. (20) 3/8" washers (10) 3/8" hex nuts (6) 3/8" x 2-1/2" lag screws for bottom bracket Silicone Sealer to seal around cracks and openings 7-conductor low voltage multi-colored wire cable (i.e. thermostat wire) Appropriate electrical supplies such as conduit, electrical boxes, fittings, wire connectors, etc. High voltage wire, sized to handle the MCA (minimum circuit ampacity) listed on the data plate and in the Electric Heat Ratings table in section 1.2. Over-Current Protection Device sized in accordance with the MFS (maximum fuse size) listed on the unit data plate and in the Electric Heat Ratings table in section 1.2. Duct materials usually are also needed in addition to the mounting hardware. To save time, design the duct work before mounting the unit. 2.4 Porting and Duct Work IMPORTANT General Information Note: The following instructions are for general guidance only. Due to the wide variety of installation possibilities, specific instructions will not be given. When in doubt, follow standard and accepted installation practices, or contact Marvair for additional assistance. Wall Openings Measure the dimensions of the supply and return ports on the unit. Cut the supply opening in the exterior wall for the supply and return. IMPOR- TANT: All units with electric heat must have one inch clearance on all four sides of the supply outlet duct flange on the unit. The one inch clearance must extend on all sides of the supply duct for the first three feet from the unit. Minimum Airflow Requirements The duct system must be engineered to assure sufficient air flow through the units, even under adverse conditions such as dirty filters, etc. Proper engineering will insure longevity and maximum performance from the unit. Ducting Extensions should be cut flush with the inside wall for applications without duct work. Applications using duct work should be designed and installed in accordance with all applicable safety codes and standards. Marvair strongly recommends referring to the current edition of the National Fire Protection Association Standards 90A and 90B before designing and installing duct work. The duct system must be engineered to insure sufficient air flow through the unit to prevent over-heating of the heater element. This includes proper supply duct sizing, sufficient quantity of supply registers, adequate return and filter area. Ductwork must be of correct material and must be properly insulated. The duct must be constructed of galvanized steel with a minimum thickness of.019 inches. Ductwork must be firmly attached, secured and sealed to prevent air leakage. Do not use duct liner on inside of supply duct within four feet of the unit. Galvanized metal duct extensions should be used to simplify connections to duct work and grilles. Use fabric boots to prevent the transmission of vibration through the duct system. The fabric must be UL rated (UL-181) to a minimum of 197 o F. 24 GreenPac 7/03-2

25 2.5 Bracket Installation 1. Remove and discard the 4 x 4 shipping boards attached to the base of the unit. 2. All models have built-in mounting flanges. See Figure Refer to Figure 4. Attach the bottom support bracket to the wall using appropriate 3/8" diameter hardware. For example, on wooden structures, use 3/8 x 2-1/2 inch all-thread lag screws. The screws must penetrate the center of the wall stud. Drill a pilot hole in the stud to prevent it from splitting. FOAM SEAL GRILLE SUPPLY AIR DUCT EXTENSIONS (Not Supplied with Unit) RETURN AIR GRILLE BOTTOM BRACKET Figure 4. GreenPac and GreenPac HGR A/C and HP Wall Mounting Detail - AVP Mounting The Unit 1. For wiring into the back of unit, locate the lower of the two knock-outs on the wall side of the GreenPac and GreenPac HGR unit. Drill a one inch hole in the building wall to match this opening. Allow sufficient clearance to run 3/ 4" conduit through the hole and to the unit. 2. Apply a bead of silicone sealer on the wall side of the mounting brackets on the unit. Circle the mounting holes with the silicone bead. 3. Using an appropriate and safe lifting device, set the unit on the bottom support bracket mounted on the wall. You must stabilize the unit on the bracket with the lifting device or by some other means - the bracket alone is not sufficient. 4. Make sure that the duct flanges are properly aligned with the wall opening. Adjust as necessary. 5. Note the holes in each side flange. Using the holes for guides, drill holes through the wall with a 3/8 inch drill bit. Insert the six 3/8 lag screws through the flanges and into the studs. Tighten the bolts to secure the unit. 6. Apply a bead of silicone where the flashing and side flanges contact the unit and the structure wall. 7. On the inside of the structure, wall sleeves may be installed in the supply and return air openings. The sleeves should be trimmed to fit flush with the inside wall. 25 GreenPac 7/03-2

26 8. Check the fit of each sleeve to its mating flange for possible air leaks. Apply silicone sealer to close any gaps. Install the air return and supply grilles. 2.7 Electrical Connections IMPORTANT! All electrical work must meet the requirements of local codes and ordinances. Work should be done only by qualified persons. The GreenPac and GreenPac HGR units incorporate an internal crankcase heater for compressor protection. The crankcase heater must be energized for at least 24 hours prior to starting the compressor. High Voltage Wiring The power supply should have the proper voltage, phase, and ampacity for the selected model. 1. Refer to electrical data stamped on the unit rating plate and to Section 1.2 for field wiring requirements. The electrical data lists heater sizes, fuse sizes, and wire sizes for all models. Also shown are the number for field power circuits required for the various modes with the electric heaters. Each unit is marked with a Minimum Circuit Ampacity. This means that the field wiring used must be sized to carry that amount of current. Use Copper Conductors Only. Refer to the National Electrical Code for complete current carrying capacity data on the various insulation grades of wiring materials. Note: Power supply service must be within allowable range (+10% - 5%) of rated voltage stamped on the unit rating plate. To operate nominal 230/ 208V unit at 208V, change the transformer line tap from 240V to 208V following the instruction on wiring label in unit. 2. Connect the wires to the input side of the internal breaker (L1 & L2 for single-phase units; L1, L2, & L3 for three phase models). 3. Install the ground wire on the ground lug. Low Voltage Wiring 1. Pull the low voltage wiring from the unit to the thermostat / sub-base assembly. 2. Mount the sub-base on a level plane. Connect the thermostat wire to the unit terminal board and the thermostat as shown in Figure If applicable, attach the thermostat assembly to the sub-base. Check the stage two heat anticipator setting - it should read THE INTERNAL TRANSFORMER IS NOT DESIGNED TO POWER OTHER EXTERNAL DEVICES. 26 GreenPac 7/03-2

27 4 WIRE WALL THERMOSTAT G R W Y FOUR (4) CONDUCTOR, COLOR CODED, 18 GAUGE THERMOSTAT CABLE (Field Supplied) G R C W Y LOW VOLTAGE SECTION AIR CONDITIONER TERMINAL BOARD Figure 5a. Thermostat Wiring Detail - Air Conditioners 4 WIRE WALL THERMOSTAT G R W Y FOUR (4) CONDUCTOR, COLOR CODED, 18 GAUGE THERMOSTAT CABLE (Field Supplied) Humidistat Blue Red Yellow G R C W Y LOW VOLTAGE SECTION AIR CONDITIONER TERMINAL BOARD To Pigtail on RGR Relay in Unit Figure 5b. Humidity Control Wiring Detail - Air Conditioners 27 GreenPac 7/03-2