These instructions explain the recommended method of installation of the MagicPak All-In-One™ HVAC system model MGE4 gas heating with electric cooling unit and associated electrical wiring. These instructions, and any instructions packaged with mating components and/or accessories, should be carefully read prior to beginning installation.
2024年5月28日 — Do not operate a summer exhaust fan. 6. Follow the lighting instructions. Place the unit being inspected in operation. Adjust the thermostat so appliance is ...22 頁
Installation Instructions | Library | MagicPak
INSTALLATION AND MAINTENANCE INSTRUCTIONS MGE4-12/14 Series Electric Cooling / Gas Heating Packaged Unit Save these instructions for future reference This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to the potential for personal injury or death. Installation WARNING These units are not approved for mobile home applications. Such use could result in property damage, personal injury, or death. General These instructions explain the recommended method of installation of the MagicPak All-In-OneTM HVAC system model MGE4 gas heating with electric cooling unit and associated electrical wiring. These instructions, and any instructions packaged with mating components and/or accessories, should be carefully read prior to beginning installation. Note particularly any CAUTIONS or WARNINGS in these instructions and all labels on the units. Table of Contents Installation....................................................................1 Start-Up......................................................................15 Operation....................................................................15 Maintenance...............................................................17 Accessories................................................................18 Wiring Diagrams.........................................................20 WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier. Manufactured By Allied Air Enterprises LLC A Lennox International Inc. Company 215 Metropolitan Drive West Columbia, SC 29170 *P508197-01* (P) 508197-01 CAUTION The installation of this appliance must conform to the requirements of the National Fire Protection Association; the National Electrical Code, ANSI/NFPA No. 70 (latest edition); and any state/provincial laws or local ordinances. Local authorities having jurisdiction should be consulted before installation is made. Such applicable regulations or requirements take precedence over the general instructions in this manual. Check that equipment complies with all applicable building codes, laws, and regulations for its intended use prior to installation. 508197-01 Issue 2137 Page 1 of 22 The MGE4 series are self-contained, gas-fired heating with electric cooling models with optional epoxy-coated coils. The unit design has been certified by Intertek Testing Services for compliance with the latest edition of the American National Standard ANSI Z21.47 for direct vent central furnaces. The MGE4 models are certified to be in compliance with the latest edition of AHRI Standard 210/240. All models are design certified for heating operation when fired with natural or propane gas. Units must be equipped to use the fuel type provided in the field. These instructions are intended as a general guide only, for use by qualified personnel and do not supersede any national or local codes in any way. Compliance with all local, state, provincial, or national codes pertaining to this type of equipment should be determined prior to installation. Units certified for less than 2% cabinet leakage using ANSI/ ASHRAE 193 (complies with IECC 2015) are identified on the rating plate. WARNING In the State of Massachusetts: This product must be installed by a licensed Plumber or Gas Fitter. When flexible connectors are used, the maximum length shall not exceed 36". When lever-type gas shutoffs are used, they shall be T-handle type. WARNING Because the MGE unit is installed in a confined space, the return air must be ducted, sealed to the unit and terminated outside the space containing the unit. Even a small leak at the return air duct connection can cause a potentially dangerous negative pressure condition. WARNING For your safety, do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Such actions could result in property damage, personal injury, or death. WARNING Installation and servicing of air conditioning equipment can be hazardous due to internal refrigerant pressure and live electrical components. Only trained and qualified service personnel should install or service this equipment. Installation and service performed by unqualified persons can result in property damage, personal injury, or death. WARNING The unit must be installed with approved wall sleeve and louver accessories for safe operation. Improper installations could result in property damage, personal injury, or death. Inspection Upon receipt of equipment, carefully inspect it for possible shipping damage. If damage is found, it should be noted on the carrier's freight bill. Take special care to examine the unit inside the carton if the carton is damaged. File a claim with the transportation company. If any damage is discovered and reported to the carrier, do not install the unit, as claim may be denied. Check the unit rating plate to confirm specifications are as ordered. Limitations The unit should be installed in accordance with all national and local safety codes. Limitations of the unit and appropriate accessories must also be observed. The outdoor fan is designed to operate against no more than .10" w.c. static pressure. Minimum and maximum operation conditions must be observed to assure proper system performance. Refer to Table 1 for the ambient operating limitations of the unit. Outdoor Ambient Air Temperature °F Minimum DB Maximum DB Cool Cool Heat 65 115 75 Indoor Ambient Air Temperature °F Minimum Maximum DB/WB DB DB/WB DB Cool Heat Cool Heat 62/57 50 90/72 80 DB = Dry Bulb WB = Wet Bulb Table 1. Ambient Temperature Limitations Page 2 of 22 Issue 2137 508197-01 Unit Dimensions (in.) Model *MGE4-12-091*P *MGE4-12-121*P *MGE4-12-181*P *MGE4-12-241*P *MGE4-12-301*P *MGE4-14-361*P A B C D 57-7/8 20-3/4 18-5/8 59-7/8 22-3/4 20-5/8 6 63-7/8 26-3/4 24-5/8 71-7/8 34-3/4 28-5/8 10 Top View Return Air Thermostat 4" Opening 4" Wiring Connections Line Voltage 12" 16" Knockouts (7/8" and 1-1/8" Dia.) 28" E 24-5/8 26-5/8 30-5/8 38-5/8 13-1/2" 12" 16" 10-3/4" Supply Air Opening Return Air Opening Supply Air Opening 1-1/2" Tool-less Filter Access Flame Inspection Sight Glass Indoor Blower & Controls Access 32-3/8" Gas Pipe Connection 0.5" 9-3/4" Compressor / Gauge Ports / Outdoor Fan Access Condensate Drain 3/4" NPT* 3/4" 28" Front View 24-1/4" Supply Air Opening Return Air Opening 33-1/4" Vent Pipe Combustion Termination A Air Inlet 2-1/2" O.D. D Outdoor Fan Discharge E C Outdoor B Coil 24-3/8" Side View 3-1/4" Rear View * Provisions must be made to properly drain condensate from the drain pan. Figure 1. 508197-01 Issue 2137 Page 3 of 22 Accessibility Clearances The front of the unit must be accessible for service. A minimum clearance of 30" in front of unit is required for service. If the unit is enclosed, a door or access panel aligned with the front of the unit is the preferred method of providing access. The door or access panel opening must be a minimum of 30" wide (centered on the unit) and be as tall as the unit. Top View 1" Min. Side Clearance Closet Wall IMPORTANT The unit must be installed with approved wall sleeve and louver accessories for safe operation. Improper installations could result in property damage, personal injury, or death. Supply Duct Opening Exterior Wall Return Duct Opening Clearance to Front of Unit Closet Door / Access Panel Opening Minimum 30" wide Supply Duct Clearances Minimum Clearances to Combustible Materials1 Front Sides Top 0" 0" 0" 1 Accessibility clearances take precedence. Unit Clearances Minimum Clearances [1] Front2 Sides3 1" 1" 1 Accessibility clearances take precedence. 2 Clearance must accommodate field-installed condensate drain line / drain trap and gas line. 3 Additional clearance required if field-installed condensate drain line / drain trap is routing alongside unit. NOTE: Consult local codes for other clearance requirements Supply Duct Exterior Wall 1" Min. Side Clearance Side View Return Duct Interior Wall Closet Wall Wall Sleeve Side Panel (one each side) Sill Plate 4" Min. Front of Unit Minimum Clearance Gas Piping (field supplied) Mounting Strap (one each side; supplied with unit) 3/4" Plywood Riser (supplied with wall sleeve) Condensate Drain Trap (field supplied) Floor Platform (field supplied) - Unit must be supported by platform, which must be level with sill plate of opening in exterior wall. Page 4 of 22 Figure 2. Minimum Clearances Issue 2137 508197-01 Exterior Wall Wall Sleeve Top Panel Wall Sleeve Divider Panel Wall Sleeve Side Panel Wall Sleeve Side Panel Wall Sleeve Base Lag Screws with Washers 3/4" Board Added to Level Platform with Wall Sleeve Base (provided with wall Sleeve) Platform Height: Minimum 4" Platform (field fabricated and supplied) NOTE: Unit must be supported by platform, which must be level with sill plate of opening in exterior wall. Figure 3. Wall Sleeve and Louver Kit Installation Location WARNING The unit must be installed with approved wall sleeve and louver accessories for safe operation. Improper installations could result in property damage, personal injury, or death. For information on wall sleeves and louver accessories, see the Accessories section. This unit is designed to be installed in up to the wall (exterior wall) installation only. Refer to Figure 2 for additional details. Accessibility clearances must take precedence over fire protection clearances. The outside of the unit may be flush with the face of the exterior wall, and it should not be obstructed with trees, landscape materials, or building structure. Unit can be installed recessed with appropriate wall sleeve accessories. There is no minimum clearance required on locating the unit to an interior corner of a building. If the unit is installed in a residential garage, it must be located or protected to avoid physical damage by vehicles. The unit must be installed so that no electrical components are exposed to water. CAUTION This unit must be installed level to allow for proper drainage of the unit base pan and indoor drain pan. Wall Sleeve and Louver Installation Refer to installation instructions included with the wall sleeve and the louver along with Figure 3 for guidance in assembling and installing the wall sleeve and louver. CAUTION The sleeve is not intended as the sole support for the unit. An additional support must be provided for adequate support (see Figure 3). 508197-01 Issue 2137 Page 5 of 22 Installing and Securing Unit to Wall Sleeve Before installing and securing the unit to the wall sleeve, make sure that the proper louver is installed. Due to the high temperatures of the combustion products released from the vent pipe, these units require the use of either an aluminum louver or polypropylene louver (see the Accessories section). 1. Make sure the gaskets attached to the sleeve are not damaged. 2. Verify divider panel is positioned properly. Refer to Table 2 for wall sleeves that allow for multiple divider panel locations. 3. Place the unit into the wall sleeve. Lift leading end of unit and walk unit onto the sleeve. Once in the wall sleeve, lower the unit into position. This prevents damage to the base pads. Assure that the unit is level and completely seated against the gaskets on the wall sleeve. The unit must be supported by a fieldfabricated and supplied platform. Model MGE4-12-09,12 MGE4-12-18,24 MGE4-12-30 MGE4-14-36 ASLEEVE**-2 Two Positions Lower ASLEEVE**-5 Three Positions Lower Orientation of Flange Down Upper Middle Up NA Upper Table 2. Flange Up Orientation Flange Down Orientation Figure 4. Positioning Divider Panel 5. Inspect the fit up of the unit to the wall sleeve. Verify that the gaskets of the wall sleeve make a complete seal to the unit paying particular attention to top and bottom corners of unit to sleeve seal. Caulk if needed. Venting The venting system is an integral part of the appliance. The venting system must not be modified in any manner other than what is specified in these instructions. This appliance should be installed in a location such that the vent outlet is located in the following manner: 1. Distances to windows that open, building openings, or public walkways should be consistent with the National Fuel Gas Code Z223.1. 2. For U.S. installations, the vent system shall terminate a minimum horizontal clearance of 4' from electric meters, regulators, and relief equipment. 3. Flue products from properly adjusted and maintained units, should not cause degradation to building materials. The unit contains a combustion air inducer. The inducer draws the combustion products out of the heat exchanger together with dilution air and forces the mixture from the unit to the outside. No special provisions are required for supplying air for combustion, nor is a chimney required as this is a direct vent appliance. The vent outlet must be extended (see Vent Pipe Installation). The venting system is designed for proper operation under most weather conditions and for wind speeds up to 40 miles per hour. The venting system should be unobstructed for a minimum of 2 feet. Existing Venting Systems When an existing furnace is removed and replaced, the MGE4 unit venting system may no longer be sized to properly vent the attached appliances. An improperly sized venting system can result in spillage of flue products into the living space, the formation of condensate, leakage, etc. Refer to the CAUTION box in the next column for proper test procedure. 4. Use the two installation brackets to secure the unit to the wall sleeve (see Figure 7). The units are shipped with the brackets placed loose on the unit top panel, beneath packaging. Hook each bracket into the front edge of the wall sleeve side panel. Position the bracket so it can be bent around the front corner of the unit. Remove one of the two screws in that position on the unit. Line up one of the holes in the installation bracket with the screw hole and attach the bracket to the unit with that screw. Make sure to fasten tight enough that the seal is maintained. Trim off excess bracket if applicable. Page 6 of 22 Issue 2137 508197-01 CAUTION Carbon Monoxide Poisoning Hazard Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death. The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the common venting system are not in operation: 1. Seal any unused openings in the common venting system. 2. Visually inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 (latest edition) and these instructions. Determine that there is no blockage or restriction, leakage, corrosion, or other deficiencies which could cause an unsafe condition. 3. As far as practical, close all building doors and windows between the space in which the appliance(s) connected to the venting system are located and other spaces in the building. 4. Close fireplace dampers. 5. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they are operating at maximum speed. Do not operate a summer exhaust fan. 6. Follow the lighting instructions. Place the unit being inspected in operation. Adjust the thermostat so appliance is operating continuously. 7. Test for spillage from draft hood equipped appliances at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle. 8. If improper venting is observed during any of the above tests, the venting system must be corrected in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 (latest edition). 9. After it has been determined that each appliance remaining connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers, and any other gas-fired burning appliance to their previous conditions of use. Locating Vent Pipe & Extension Determining the length of the vent pipe extension is dependent upon which wall sleeve accessory is installed at the job site for each particular installation. CAUTION For proper operation, the vent length must be correct for the installation. The unit may not operate correctly with inadequate vent length. 1. Access vent pipe at the side of the unit that will face the outdoors. 2. The vent pipe and vent pipe extension is located to the right of the outdoor fan (see Figure 5). Outdoor Fan Mounting Bracket Vent Pipe Figure 5. Locating Vent Pipe and Extension 3. Remove the 5/16" screw used to mount the vent pipe assembly to the mounting bracket. Keep this screw. 4. Five holes have been drilled into the vent extension (see Figure 6). Four of those holes are provided so that the vent can be extended the necessary length required for the installation. The wall sleeve that is installed determines which of these clearance holes should be used. Using Table 3 and Figure 6, determine which clearance hole should be used to position the vent extension properly. Slide the vent extension outward and line up the correct clearance hole on the vent extension with the hole in the vent pipe and the hole in the mounting bracket. 5. Re-install the 5/16" screw that was removed in Step 3. Thread the screw first through the clearance hole in the mounting bracket, the proper clearance hole in the vent extension, and into the engagement hole in the vent pipe. The length of the vent pipe extension that extends out of the cabinet should be as shown in Table 3. Wall Sleeve Used ASLEEVE6-1, 2, 5 ASLEEVE8-1, 2, 5 ASLEEVE10-1, 2, 5 ASLEEVE12-1, 2, 5 Hole # 4 3 2 1 Approximate Length the Vent Pipe Extends from the Cabinet 5.5 in. 7.5 in. 9.5 in. 11.5 in. Table 3. Determining Hole Setting 508197-01 Issue 2137 Page 7 of 22 Outdoor Fan Vent Extension 0 The supply and return air duct systems should be fabricated per the designed CFM and static requirements of the job (see Table 4). Ductwork should not be sized to match the dimensions of the duct connections on the unit. The return duct should be sealed to the unit casing and terminate outside the space containing the unit. Clearance Holes* * The clearance holes are not marked on the actual vent extension. CAUTION Do not screw into the side of the drain pan or the indoor coil, which is located above the installation bracket. Figure 6. Positioning Vent Pipe Extension 6. Position the vent pipe at the center of the metal wire grille when using polypropylene louvers. The vent pipe should have a slight downward slope to allow any moisture to drain away from the unit as well as being centered on the metal wire grille. Ductwork Ductwork should be designed and sized according to the methods in Manual Q of the Air Conditioning Contractors of America (ACCA). Check unit supply and return air openings for debris before making ductwork connections. Installation Brackets It is recommended that supply and return duct connections at the unit be made with flexible joints. If flexible ducts are used, a 6" sheet metal starter collar is required. Remove and replace screw to secure bracket (one each side) Figure 7. Securing Unit 0.75 Ton Model 15MGE4-12-091*P Gas Heating Rise Mid Range Rise (F°) (F°) Indoor Blower Speed 0.1 "w.c. TAP 1 (FAN) 430 46 0.06 TAP 2 (COOL) 375 39 0.05 15 - 45 30 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 365 35 0.05 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 430 46 0.06 TAP 2 (COOL) 375 39 0.05 25 - 55 40 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 445 48 0.06 TAP 5 (HEAT) N/A N/A N/A 0.2 "w.c. --- 370 50 0.07 --- 315 42 0.06 --- N/A N/A N/A 31 300 39 0.05 N/A N/A N/A N/A --- 370 50 0.07 --- 315 42 0.06 --- N/A N/A N/A 40 390 53 0.07 N/A N/A N/A N/A 0.3 "w.c. --- 320 53 0.07 --- N/A N/A N/A --- 440 83 0.11 37 240 42 0.06 N/A 460 83 0.11 --- 320 53 0.07 --- N/A N/A N/A --- 440 83 0.11 46 340 56 0.08 N/A 530 102 0.14 0.4 "w.c. --- 265 57 0.08 --- N/A N/A N/A --- 390 87 0.12 47 N/A N/A N/A 24 415 88 0.12 --- 265 57 0.08 --- N/A N/A N/A --- 390 87 0.12 53 N/A N/A N/A 34 480 108 0.14 24MGE4-12-091*P N/A: Do not operate unit using this blower speed at this external static pressure. As shipped speed for Cooling operation. Blower speed must be field adjusted to speed Tap 3 for higher duct static applications. * As shipped speed for Heating operation. Blower speed must be field adjusted to speed Tap 5 for higher duct static applications. # As shipped speed for Low Stage Cooling operation (low duct static). Table 4. Blower Performance (208V or 230V) 0.5 "w.c. --- 200 62 0.08 ----- N/A N/A N/A ----- 340 92 0.12 --N/A N/A N/A N/A N/A 27 370 98 0.13 30 --- 200 62 0.08 ----- N/A N/A N/A ----- 340 92 0.12 --N/A N/A N/A N/A N/A 37 440 114 0.15 41 SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise Page 8 of 22 Issue 2137 508197-01 SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise 1 Ton 24MGE4-12-121*P Model 15MGE4-12-121*P 36MGE4-12-121*P Gas Heating Rise Mid Range Rise (F°) (F°) Indoor Blower Speed 0.1 "w.c. TAP 1 (FAN) 415 39 0.05 TAP 2 (COOL) 425 46 0.06 15 - 45 30 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 370 36 0.05 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 415 39 0.05 TAP 2 (COOL) 425 46 0.06 25 - 55 40 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 450 50 0.07 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 415 39 0.05 TAP 2 (COOL) 425 46 0.06 30 - 60 45 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 590 87 0.12 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 470 54 0.07 TAP 2 (COOL) 670 118 0.16 15-45 30 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 370 39 0.05 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 470 54 0.07 TAP 2 (COOL) 670 118 0.16 25-55 40 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 450 52 0.07 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 470 54 0.07 TAP 2 (COOL) 670 118 0.16 30-60 45 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 590 86 0.12 TAP 5 (HEAT) 715 129 0.17 0.2 "w.c. --- 350 43 0.06 --- 370 49 0.07 --- N/A N/A N/A 30 315 39 0.05 N/A N/A N/A N/A --- 350 43 0.06 --- 370 49 0.07 --- N/A N/A N/A 40 405 53 0.07 N/A N/A N/A N/A --- 350 43 0.06 --- 370 49 0.07 --- N/A N/A N/A 45 555 91 0.12 N/A 680 138 0.19 --- 400 59 0.08 --- 625 123 0.16 --- 765 184 0.25 30 305 43 0.06 N/A N/A N/A N/A --- 400 59 0.08 --- 625 123 0.16 --- 765 184 0.25 40 385 57 0.08 N/A N/A N/A N/A --- 400 59 0.08 --- 625 123 0.16 N/A 765 184 0.25 45 555 90 0.12 38 680 135 0.18 0.3 "w.c. --- 285 47 0.06 --- 315 53 0.07 --- 475 93 0.12 35 260 42 0.06 N/A 470 80 0.11 --- 285 47 0.06 --- 315 53 0.07 --- 475 93 0.12 44 355 57 0.08 N/A 525 101 0.14 --- 285 47 0.06 --- 315 53 0.07 --- 475 93 0.12 48 515 96 0.13 39 650 143 0.19 --- 345 63 0.08 --- 565 131 0.18 --- 730 191 0.26 37 250 46 0.06 N/A 460 92 0.12 --- 345 63 0.08 --- 565 131 0.18 --- 730 191 0.26 46 330 61 0.08 N/A 540 116 0.16 --- 345 63 0.08 --- 565 131 0.18 --- 730 191 0.26 48 515 95 0.13 39 650 140 0.19 0.4 "w.c. 0.5 "w.c. --- 240 51 0.07 --- 165 54 0.07 ----- N/A N/A N/A --- N/A N/A N/A ----- 430 97 0.13 --- 385 101 0.14 --43 N/A N/A N/A N/A N/A N/A N/A N/A 24 415 85 0.11 27 370 89 0.12 30 --- 240 51 0.07 --- 165 54 0.07 ----- N/A N/A N/A --- N/A N/A N/A ----- 430 97 0.13 --- 385 101 0.14 --50 N/A N/A N/A N/A N/A N/A N/A N/A 34 485 105 0.14 37 450 110 0.15 40 --- 240 51 0.07 --- 165 54 0.07 ----- N/A N/A N/A --- N/A N/A N/A ----- 430 97 0.13 --- 385 101 0.14 --52 475 100 0.134 56 N/A N/A N/A N/A 41 615 148 0.198 44 585 153 0.21 46 --- 290 67 0.09 --- 235 70 0.09 ----- 525 136 0.18 --- N/A N/A N/A N/A --- 675 201 0.27 --- 630 206 0.28 --45 N/A N/A N/A N/A N/A N/A N/A N/A 24 415 96 0.13 27 370 101 0.14 30 --- 290 67 0.09 --- 235 70 0.09 ----- 525 136 0.18 --- N/A N/A N/A N/A --- 675 201 0.27 --- 630 206 0.28 --54 N/A N/A N/A N/A N/A N/A N/A N/A 33 490 121 0.16 37 450 127 0.17 40 --- 290 67 0.09 --- 235 70 0.09 ----- 525 136 0.18 --- N/A N/A N/A N/A --- 675 201 0.27 --- 630 206 0.28 --52 475 99 0.13 56 N/A N/A N/A N/A 41 615 146 0.20 44 585 151 0.20 46 15MGE4-12-181*P 36MGE4-12-181*P N/A: Do not operate unit using this blower speed at this external static pressure. As shipped speed for Cooling operation. Blower speed must be field adjusted to speed Tap 3 for higher duct static applications. * As shipped speed for Heating operation. Blower speed must be field adjusted to speed Tap 5 for higher duct static applications. # As shipped speed for Low Stage Cooling operation (low duct static). Table 4. Blower Performance (208V or 230V) 1.5 Ton 24MGE4-12-181*P 508197-01 Issue 2137 Page 9 of 22 SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise 1.5 Ton Model 48MGE4-12-181*P 60MGE4-12-181*P 15MGE4-12-241*P Gas Heating Rise Mid Range Rise (F°) (F°) Indoor Blower Speed 0.1 "w.c. TAP 1 (FAN) 470 54 0.07 TAP 2 (COOL) 670 118 0.16 35-65 50 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 695 141 0.19 TAP 5 (HEAT) 830 214 0.29 TAP 1 (FAN) 470 54 0.07 TAP 2 (COOL) 670 118 0.16 40-70 55 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 800 182 0.24 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 450 49 0.07 TAP 2 (COOL) 815 206 0.28 15-45 30 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 370 36 0.05 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 450 49 0.07 TAP 2 (COOL) 815 206 0.28 25-55 40 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 450 49 0.07 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 450 49 0.07 TAP 2 (COOL) 815 206 0.28 30-60 45 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 600 89 0.12 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 450 49 0.07 TAP 2 (COOL) 815 206 0.28 35-65 50 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 720 145 0.19 TAP 5 (HEAT) N/A N/A N/A 0.2 "w.c. --- 400 59 0.08 --- 625 123 0.16 N/A 765 184 0.25 51 655 147 0.20 43 795 221 0.30 --- 400 59 0.08 --- 625 123 0.16 N/A 765 184 0.25 56 770 187 0.25 N/A N/A N/A N/A --- 400 52 0.07 --- 780 210 0.28 N/A N/A N/A N/A 30 320 38 0.05 N/A N/A N/A N/A --- 400 52 0.07 --- 780 210 0.28 N/A N/A N/A N/A 40 400 52 0.07 N/A N/A N/A N/A --- 400 52 0.07 --- 780 210 0.28 N/A N/A N/A N/A 45 560 93 0.12 N/A 700 148 0.20 --- 400 52 0.07 --- 780 210 0.28 N/A N/A N/A N/A 50 675 151 0.20 N/A 820 223 0.30 0.3 "w.c. --- 345 63 0.08 --- 565 131 0.18 --- 730 191 0.26 54 620 153 0.21 45 760 228 0.31 --- 345 63 0.08 --- 565 131 0.18 --- 730 191 0.26 58 740 191 0.26 N/A 850 263 0.35 --- 345 56 0.08 --- 750 215 0.29 N/A 850 283 0.38 35 250 42 0.06 N/A 465 82 0.110 --- 345 56 0.08 --- 750 215 0.29 N/A 850 283 0.38 45 345 56 0.08 N/A 530 99 0.13 --- 345 56 0.08 --- 750 215 0.29 N/A 850 283 0.38 48 520 96 0.13 38 665 153 0.21 --- 345 56 0.08 --- 750 215 0.29 N/A 850 283 0.38 53 635 157 0.21 44 780 232 0.31 0.4 "w.c. --- 290 67 0.09 --- 525 136 0.18 --- 675 201 0.27 58 580 161 0.22 47 730 236 0.32 --- 290 67 0.09 --- 525 136 0.18 --- 675 201 0.27 60 710 198 0.27 53 825 270 0.36 --- 285 59 0.08 --- 720 219 0.29 --- 820 287 0.38 45 N/A N/A N/A 24 420 85 0.11 --- 285 59 0.08 --- 720 219 0.29 --- 820 287 0.38 52 N/A N/A N/A 34 490 103 0.14 --- 285 59 0.08 --- 720 219 0.29 --- 820 287 0.38 52 485 100 0.13 40 635 157 0.21 --- 285 59 0.08 --- 720 219 0.29 --- 820 287 0.38 56 595 164 0.22 46 745 238 0.32 24MGE4-12-241*P 36MGE4-12-241*P 48MGE4-12-241*P N/A: Do not operate unit using this blower speed at this external static pressure. As shipped speed for Cooling operation. Blower speed must be field adjusted to speed Tap 3 for higher duct static applications. * As shipped speed for Heating operation. Blower speed must be field adjusted to speed Tap 5 for higher duct static applications. # As shipped speed for Low Stage Cooling operation (low duct static). Table 4. Blower Performance (208V or 230V) 0.5 "w.c. --- 235 70 0.09 ----- N/A N/A N/A N/A --- 630 206 0.28 --62 N/A N/A N/A N/A 49 690 242 0.32 52 --- 235 70 0.09 ----- N/A N/A N/A N/A --- 630 206 0.28 --63 675 204 0.27 66 54 805 276 0.37 56 --- 235 65 0.09 ----- 690 224 0.30 ----- 785 286 0.38 --N/A N/A N/A N/A N/A 26 370 90 0.12 30 --- 235 65 0.09 ----- 690 224 0.30 ----- 785 286 0.38 --N/A N/A N/A N/A N/A 37 450 107 0.14 40 --- 235 65 0.09 ----- 690 224 0.30 ----- 785 286 0.38 --56 N/A N/A N/A N/A 42 600 162 0.22 45 --- 235 65 0.09 ----- 690 224 0.30 ----- 785 286 0.38 --60 N/A N/A N/A N/A 48 710 246 0.33 50 2 Ton Page 10 of 22 Issue 2137 508197-01 SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise 2 Ton 60MGE4-12-241*P Model 24MGE4-12-301*P 36MGE4-12-301*P Gas Heating Rise Mid Range Rise (F°) (F°) Indoor Blower Speed 0.1 "w.c. TAP 1 (FAN) 450 49 0.07 TAP 2 (COOL) 815 206 0.28 40-70 55 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 810 182 0.24 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 490 55 0.07 TAP 2 (COOL) 930 239 0.32 25-55 40 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 450 47 0.06 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 490 55 0.07 TAP 2 (COOL) 930 239 0.32 30-60 45 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 600 80 0.11 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 490 55 0.07 TAP 2 (COOL) 930 239 0.32 35-65 50 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 715 140 0.19 TAP 5 (HEAT) N/A N/A N/A TAP 1 (FAN) 490 55 0.07 TAP 2 (COOL) 930 239 0.32 40-70 55 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 810 163 0.22 TAP 5 (HEAT) 935 233 0.31 0.2 "w.c. 0.3 "w.c. --- 400 52 0.07 --- 345 56 0.08 --- 780 210 0.28 --- 750 215 0.29 N/A N/A N/A N/A N/A 850 283 0.38 55 775 186 0.25 58 745 191 0.26 N/A N/A N/A N/A N/A 860 258 0.35 --- 465 65 0.09 --- 435 72 0.10 --- 900 243 0.33 --- 885 250 0.34 N/A N/A N/A N/A N/A N/A N/A N/A 40 400 49 0.07 45 350 53 0.07 N/A N/A N/A N/A N/A 530 93 0.12 --- 465 65 0.09 --- 435 72 0.10 --- 900 243 0.33 --- 885 250 0.34 N/A N/A N/A N/A N/A N/A N/A N/A 45 560 84 0.11 48 515 89 0.12 N/A 705 136 0.18 38 670 141 0.19 --- 465 65 0.09 --- 435 72 0.10 --- 900 243 0.33 --- 885 250 0.34 N/A N/A N/A N/A N/A N/A N/A N/A 50 670 146 0.20 53 630 152 0.20 N/A 815 218 0.30 44 775 227 0.30 --- 465 65 0.09 --- 435 72 0.10 --- 900 243 0.33 --- 885 250 0.34 N/A N/A N/A N/A N/A N/A N/A N/A 55 775 169 0.23 58 740 173 0.23 48 900 240 0.32 50 870 245 0.33 0.4 "w.c. --- 285 59 0.08 --- 720 219 0.29 --- 820 287 0.38 60 710 195 0.26 52 830 265 0.36 --- 415 81 0.11 --- 835 256 0.34 N/A 930 325 0.44 51 N/A N/A N/A 34 490 98 0.13 --- 415 81 0.11 --- 835 256 0.34 N/A 930 325 0.44 52 475 93 0.12 40 635 146 0.20 --- 415 81 0.11 --- 835 256 0.34 N/A 930 325 0.44 57 590 159 0.21 46 740 233 0.31 --- 415 81 0.11 --- 835 256 0.34 N/A 930 325 0.44 60 710 179 0.24 52 835 254 0.34 48MGE4-12-301*P 60MGE4-12-301*P N/A: Do not operate unit using this blower speed at this external static pressure. As shipped speed for Cooling operation. Blower speed must be field adjusted to speed Tap 3 for higher duct static applications. * As shipped speed for Heating operation. Blower speed must be field adjusted to speed Tap 5 for higher duct static applications. # As shipped speed for Low Stage Cooling operation (low duct static). Table 4. Blower Performance (208V or 230V) 0.5 "w.c. --- 235 65 0.09 ----- 690 224 0.30 ----- 785 286 0.38 --63 680 200 0.27 66 54 800 270 0.36 56 --- 390 89 0.12 ----- 805 262 0.35 ----- 900 328 0.44 --N/A N/A N/A N/A N/A 37 450 103 0.14 40 --- 390 89 0.12 ----- 805 262 0.35 ----- 900 328 0.44 --56 N/A N/A N/A N/A 42 600 151 0.20 45 --- 390 89 0.12 ----- 805 262 0.35 ----- 900 328 0.44 --61 N/A N/A N/A N/A 48 705 241 0.32 51 --- 390 89 0.12 ----- 805 262 0.35 ----- 900 328 0.44 --63 680 185 0.25 66 53 810 257 0.34 55 2.5 Ton 508197-01 Issue 2137 Page 11 of 22 SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise SCFM Watts HP Temp Rise 3 Ton 36MGE4-14-361*P Model 24MGE4-14-361*P Gas Heating Rise Mid Range Rise (F°) (F°) 25-55 40 30-60 45 35-65 50 40-70 55 Indoor Blower Speed 0.1 "w.c. TAP 1 (COOL)# 704 126 0.17 TAP 2 (COOL) 1020 307 0.41 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 450 48 0.06 TAP 5 (HEAT) N/A N/A N/A TAP 1 (COOL)# 704 126 0.17 TAP 2 (COOL) 1020 307 0.41 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 615 82 0.11 TAP 5 (HEAT) N/A N/A N/A TAP 1 (COOL)# 704 126 0.17 TAP 2 (COOL) 1020 307 0.41 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 715 135 0.18 TAP 5 (HEAT) N/A N/A N/A TAP 1 (COOL)# 704 126 0.17 TAP 2 (COOL) 1020 307 0.41 TAP 3 (COOL) N/A N/A N/A TAP 4 (HEAT)* 825 175 0.23 TAP 5 (HEAT) 935 240 0.32 0.2 "w.c. --- 664 131 0.18 --- 980 313 0.42 N/A N/A N/A N/A 40 385 52 0.07 N/A N/A N/A N/A --- 664 131 0.18 --- 980 313 0.42 N/A N/A N/A N/A 44 580 86 0.12 N/A 710 129 0.17 --- 664 131 0.18 --- 980 313 0.42 N/A N/A N/A N/A 50 675 142 0.19 N/A 820 212 0.28 --- 664 131 0.18 --- 980 313 0.42 N/A N/A N/A N/A 54 790 179 0.24 48 905 246 0.33 0.3 "w.c. --- 626 136 0.18 --- 940 314 0.42 N/A 965 333 0.45 46 325 55 0.07 N/A 550 107 0.14 --- 626 136 0.18 --- 940 314 0.42 N/A 965 333 0.45 46 540 91 0.12 38 685 135 0.18 --- 626 136 0.18 --- 940 314 0.42 N/A 965 333 0.45 53 640 148 0.20 44 785 219 0.29 --- 626 136 0.18 --- 940 314 0.42 N/A 965 333 0.45 57 755 185 0.25 49 870 254 0.34 0.4 "w.c. --- 592 141 0.19 --- 900 318 0.43 --- 930 338 0.45 55 N/A N/A N/A 33 500 112 0.15 --- 592 141 0.19 --- 900 318 0.43 --- 930 338 0.45 50 500 96 0.13 39 650 140 0.19 --- 592 141 0.19 --- 900 318 0.43 --- 930 338 0.45 56 600 155 0.21 46 745 227 0.30 --- 592 141 0.19 --- 900 318 0.43 --- 930 338 0.45 59 720 191 0.26 51 845 260 0.35 48MGE4-14-361*P N/A: Do not operate unit using this blower speed at this external static pressure. As shipped speed for Cooling operation. Blower speed must be field adjusted to speed Tap 3 for higher duct static applications. * As shipped speed for Heating operation. Blower speed must be field adjusted to speed Tap 5 for higher duct static applications. # As shipped speed for Low Stage Cooling operation (low duct static). Table 4. Blower Performance (208V or 230V) 0.5 "w.c. --- 553 147 0.20 ----- 865 323 0.43 ----- 890 344 0.46 --N/A N/A N/A N/A N/A 36 450 117 0.16 40 --- 553 147 0.20 ----- 865 323 0.43 ----- 890 344 0.46 --54 460 102 0.14 58 41 615 145 0.19 44 --- 553 147 0.20 ----- 865 323 0.43 ----- 890 344 0.46 --60 560 162 0.22 64 48 715 234 0.31 50 --- 553 147 0.20 ----- 865 323 0.43 ----- 890 344 0.46 --62 690 197 0.26 65 53 815 266 0.36 55 3 Ton 60MGE4-14-361*P Filter All return air must be filtered. A washable filter is furnished with the unit, located in the return air opening. If a filter is installed at a separate central return location, then the factory furnished filter must be removed from the unit. If an installation is made in which it is more desirable to mount the filter exterior to the unit, in the return duct work or elsewhere, the washable filter can be used or replaced with a disposable filter. If a disposable filter is used in lieu of a washable filter, use the information provided in Table 5 when sizing the disposable filter. Model Number 15MGE4-12-09* 24MGE4-12-09* 15MGE4-12-12* 24MGE4-12-12* 36MGE4-12-12* 15MGE4-12-18* 24MGE4-12-18* 36MGE4-12-18* 48MGE4-12-18* 60MGE4-12-18* *MGE4-12-24* *MGE4-12-30* *MGE4-14-36* Filter Area (in2) 175 210 285 325 385 435 480 Table 5. Minimum Required Surface Area for Disposable Filters Page 12 of 22 Issue 2137 508197-01 When proper duct design is applied, field-provided filters up to MERV 6 can typically be installed in the unit's factory filter location in lieu of a washable filter. If a higher resistance filter is field installed in the unit, the added resistance must be included in the external static pressure and must not exceed 0.5 in. w.c., including ductwork. Condensate Drain Provisions must be made to properly drain condensate from the drain pan. Condensate drain connection: 3/4" NPT to 3/4" PVC fitting (schedule 40 minimum). Drain must be trapped as shown in Figure 8. The drain line should pitch gradually downward at least 1" per 10' of horizontal run to open drain. Field fabricated platform should be 4" minimum to allow for proper trapping and drainage. CAUTION Use thread sealant on the threaded fittings. Install threaded fittings by hand only. Do not over torque the fittings. If local codes require the use of metal condensate lines, do not thread metal fittings into the unit drain pans. Thread a PVC fitting into the unit drain pans and make the field connection to the PVC fitting. NOTE: These units are designed with a redundant drain system to handle condensate without the need for a secondary or emergency drain pan. Should the indoor coil condensate drain system fail, all water is contained within the unit and the flow is directed into the unit base pan. From there it will drain into the condensate riser. Figure 8. Condensate Drain Installation Electrical Connections All wiring must be done in accordance with the National Electrical Code (NEC), ANSI/NFPA No. 70 (latest edition); or local codes, where they prevail. Any alteration of internal wiring will void certification and warranty. Units are factory wired for a 230 volt power supply. If power supply is 208 volts, it will be necessary to change a wire connection on unit transformer from 240 volt terminal to 208 volt terminal as shown on the wiring diagram. Use wiring with a temperature limitation of 75°C minimum. Run the 208 or 230 volt, single phase, 60 hertz electric power supply through a fused disconnect switch and connect to the unit as shown in the unit's wiring diagram. The unit must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code ANSI/NFPA No. 70 (latest edition). The power supply to the unit must be NEC Class 1 and must comply with all applicable codes. A fused disconnect switch should be field provided for the unit, and must be separate from all other circuits. If any of the wire supplied with the unit must be replaced, replacement wire must be of the type shown on the wiring diagram. Electrical wiring must be sized to minimum circuit ampacity (MCA) marked on the unit. Use copper conductors only. Each unit must be wired with a separate branch circuit and be properly fused. Gas Supply and Piping Refer to unit rating plate to make sure the furnace is equipped to utilize the type of fuel that is being provided (natural or propane). WARNING Any conversion of a natural gas unit to propane gas must be done by qualified personnel using a conversion kit available from the manufacturer, following the instructions in the conversion kit. If done improperly, over-firing of the burners and improper burner operation can result. This can create carbon monoxide which could cause asphyxiation. Gas supply piping should be installed in accordance with local codes and the regulations of the utility. Piping must be of adequate size to prevent undue pressure drop. Consult the local utility or gas supplier for complete details on special requirements for sizing gas piping. If local codes allow the use of a flexible gas appliance connector, always use a new approved connector. Do not use a connector which has previously serviced another gas appliance. 508197-01 Issue 2137 Page 13 of 22 Pipe connections must be tight, and a non-hardening pipe compound resistant to liquefied petroleum gases must be used. Connect the gas pipe to the gas pipe connection providing a ground joint union as close to the gas pipe connection as is possible to facilitate removal of controls and manifold. Provide a drip leg on the outside of the furnace. A manual shutoff valve shall be installed in the gas line, outside the unit, 5' above the floor, or in accordance with any local codes. The furnace must be isolated from the gas supply piping system by closing the individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressure equal to or less than 1/2 psig (3.5 kPa) or 14" W.C. If the piping system is to be tested at pressures in excess of 1/2 psig (3.5 kPa), the furnace and its appliance main gas valve must be disconnected from the gas supply piping system. After gas piping is complete, carefully check all piping connections (factory and field) for gas leaks. Use a leak detecting solution or other preferred means. Some soaps used for leak detection are corrosive to certain metals. Carefully rinse piping thoroughly after leak detection has been completed. WARNING The gas valve supplied with this furnace is rated at 1/2 psig maximum. Any higher pressure may rupture the pressure regulator diaphragm and may cause overfiring of the burners and improper burner operation. The over-firing may result in the creation of carbon monoxide which could cause asphyxiation. WARNING Fire or Explosion Hazard Failure to follow the safety warnings exactly could result in serious injury, death, or property damage. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections. A fire or explosion may result causing property damage, personal injury, or loss of life. Page 14 of 22 Filter Access Return Supply Indoor Blower and Controls Access Gas Valve and Burners Access Manual Shutoff Valve with 1/8" NPT Plugged Tapping; Accessible for Test Gauge Connection (field supplied) Compressor / Gauge Ports / Outdoor Fan Access Drip Leg (field supplied) Ground Joint Union (field supplied) Condensate Drain (field supplied) Figure 9. Gas Supply Piping Issue 2137 508197-01 Thermostat The room thermostat should be located on an inside wall where it will not be subject to drafts, sun exposure, or heat from electrical fixtures or appliances. Follow manufacturer's instructions enclosed with the thermostat for general installation procedures. Color-coded insulated wires (#18 AWG) should be used to connect the thermostat to the unit. For **MGE4-14-361** models, a two-stage thermostat is recommended for reaching highest efficiency and full use of two-stage compressor. 4. Turn on electrical power to the unit. 5. Set the room thermostat to the desired temperature. If the thermostat "set" temperature is above room temperature after the pre-purge time expires, burners will light. To Shut Down Unit 1. Turn off electrical power to unit. 2. Move the gas valve switch to the "OFF" position (see Figure 10). Start-Up For Your Safety, Read Before Lighting WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. CAUTION This furnace is equipped with a direct ignition control. Do not attempt to manually light the burners. To Light Burners Gas Manifold Pressure Test Tap ON / OFF Switch Regulator Adjustment Screw (Under Cap) Gas Inlet Pressure Test Tap Gas Inlet Figure 10. Gas Valve 1. Turn off electrical power to unit. 2. Turn the thermostat to lowest setting. 3. Move the gas valve switch to the "ON" position (see Figure 10). Operation Operation of the unit is automatic and will provide heating and cooling depending on the setting of the thermostat. Heating 1. Turn on main power supply. 2. Open manual gas shutoff valve. 3. Set thermostat system to "HEAT". 4. Set thermostat to temperature desired. Sequence of Operation 1. Thermostat calls for heat. 2. Combustion air inducer starts and proper air flow is proven by the pressure switch closing. 3. Blower continues to operate for 30 seconds prior to the burners lighting. 4. Ignition control begins spark and opens gas valve. The burners are lit. Ignition is proved through flame sensor. 5. Supply air blower starts 30 seconds after the burners light. 6. When the thermostat is satisfied, the burners and combustion air inducer shut off. 7. Supply air blower will shut off 120 seconds later. If the burners should fail to ignite, the ignition control will try to ignite the burners a total of three times. Should the burners fail to ignite within the three trials for ignition, the ignition control will lock out for 1 hour before beginning another ignition cycle. To reset the control, turn the thermostat down or off for 10 seconds and then set to desired setting. At this time, the ignition sequence will try again. Cooling 1. Set thermostat system switch to "COOL." 2. Set thermostat to temperature desired. NOTE: When Y is energized, the combustion air inducer will operate for 10 seconds. The purpose of this action is to deter insect nesting in the flue pipe. 508197-01 Issue 2137 Page 15 of 22 To Shut Down Unit For temporary or short periods of shutdown, set the thermostat system switch to "OFF". For a prolonged period of shutdown, set the thermostat system switch to "OFF" and turn off the electrical power supply and the gas supply to the unit. Adjustments Heating Section Temperature Rise At time of installation, the temperature rise must be adjusted to be within the range specified on the unit rating plate. Checking and Adjusting Gas Input The gas input must not exceed the figures shown on the rating plate. The unit is equipped for rated inputs with manifold pressures of: 3.5" w.c. for natural gas and 10.0" w.c. for propane. The furnace requires conversion for use with propane; the MagicPak propane conversion kit must be used. The manifold pressure can be measured by removing the pipe plug in the downstream side of the gas valve and connecting a water manometer or gauge. Only small variations in gas input may be made by adjusting the regulator. In no case should the final manifold pressure vary more than 0.3" w.c. for natural gas or 0.7" w.c. for propane. WARNING The furnace rate must be within +/- 2% of the appliance rating input. To adjust the regulator, turn the adjusting screw on the regulator clockwise to increase pressure and input or counterclockwise to decrease pressure and input. BTU/HR Input = Cubic Feet per Revolution # Seconds per Revolution x 3600 x Heating Value For Natural Gas: Check the furnace rate by observing the gas meter, when available, making sure all other gas appliances are turned off. The test hand on the meter should be timed for at least one revolution. Note the number of seconds for one revolution. The heating value of the gas can be obtained from the local utility company. For Propane Gas: The only check for the furnace rate is to verify proper orifice spud size is installed and properly adjust the manifold pressure using a manometer. Typical manifold set point for installations is 10.0" W.C. Adjustments Cooling Section No adjustments are required or should be attempted regarding any of the components of the cooling system. The system should be checked for loose or missing wiring. Blower The unit contains a constant torque ECM blower motor with dedicated blower speed taps for continuous fan, cooling and heating operation. The proper speeds have been preset at the factory for typical heating and cooling operation. Refer to the wiring diagram and Blower Performance table for recommended heating/cooling speeds for specific models. Speeds may require adjustment due to duct design and application. Blower Operation Continuous operation of the air handling blower will be obtained if the thermostat fan switch is set to "ON". With the thermostat fan switch set to "AUTO", the air handling blower will cycle corresponding with the thermostat cycling. Fan Control The blower will start approximately 30 seconds after the burners ignite and will stop approximately 120 seconds after the thermostat is satisfied. The time delay is preset at the factory and timing cannot be adjusted. When the thermostat system switch is set for "COOL", the blower will start 5 seconds after the thermostat calls for cooling and will stop 90 seconds after the thermostat is satisfied. A fan switch is provided on the thermostat which will bring the blower on for continuous operation when the switch is set for "ON". Limit Control A fixed temperature limit control is provided which will shut off the gas to the burners if the unit is overheated for any reason. The control must not be adjusted or relocated. Altitude 0 - 5,500 ft. 5,500 - 8,500 ft. Above 8,500 ft. Natural Gas Burner Orifices Manifold Pressure As shipped 3.5" w.c. 3.0" w.c. Per National Fuel Gas Code 3.5" w.c. Table 6. LP Gas Burner Orifices LP Kit ALPKT613 or 614 (model dependent) Per National Fuel Gas Code Manifold Pressure 10.0" w.c. 8.0" w.c. 10.0" w.c. Page 16 of 22 Issue 2137 508197-01 Rollout Switch If for any reason the heat exchanger were to become blocked, there is a temperature sensitive switch located above the burners that will turn off the burners. After correcting the problem, this switch must be manually reset by pressing the button on top of it. Installation and Operation in Extremely Cold Weather Areas In areas where extremely cold outdoor temperatures (below 20°F) can be expected, some additional installation and operating precautions should be taken. The following precautions are designed to prevent possible vent system ice blockage that could result in safety shutdown of the burners: 1. Adjust to the highest achievable temperature rise within the rise and static pressure ranges specified on the rating plate. Depending on specific model, it may be possible to change to a lower heating blower speed tap to get a higher temperature rise. This also increases comfort. 2. Make sure there are no leaks of outside air into the return air system. 3. Keep the louver free from ice that may form and obstruct the flue outlet. High Altitude This unit is approved for operation at altitudes from 0 to 5,500 feet above sea level without any required modifications. For installations above 5,500 feet, refer to Table 6. Maintenance WARNING Disconnect all electrical power to the unit before conducting any maintenance procedures. Failure to disconnect the power could result in personal injury or death. Periodic inspection and maintenance normally consists of changing or cleaning filters and (under some conditions) cleaning the coils. Cooling System The refrigeration system normally requires no maintenance since it is a closed, self-contained system. Periodic maintenance is limited to: · Cleaning the air filter. Follow directions noted on the filter and label attached to the access panel. · Cleaning the indoor and outdoor coil if covered with any foreign material, lint, leaves, or other obstructions. The condensing coil should be cleaned at a minimum once per year. In areas subject to high traffic or environmental conditions which may contain chloride, sulfites, dust, ammonia, etc., more frequent cleaning is required. Heating System Burners The burners can be removed for cleaning or to change orifices. To remove the burners: 1. Disconnect electrical service and turn off gas to the appliance. 2. Remove access panel to burners and gas valve compartment. 3. Burners can be individually removed from burner assembly by removing the two screws that hold each burner in the burner rack. · Burners can be cleaned using a bottle brush. · Orifices are threaded into the gas manifold and can be removed by unscrewing. 4. Reinstall orifices and burners in the reverse order in which they were removed. Ensure burners are properly seated over orifices and properly aligned. 5. Reinstall access panel and turn on gas and electrical service. Heat Exchanger The heat exchanger should be inspected periodically and cleaned if necessary. If cleaning is necessary, use a stiff brush with a wire handle to remove scale. While cleaning the heat exchanger, the vent extension tube should also be cleaned. Remove the four screws on the combustion air inducer mounting plate and take out the blower. Use a brush to clean the vent extension tube. Blower Direct-drive blower motors are permanently lubricated and do not require oiling. Filters Inspect the filter once a month. Replace disposable filter or clean the washable filter as necessary (a minimum of three times each heating or cooling season is recommended). To clean the washable filter, shake filter to remove excess dirt and/or use a vacuum cleaner. Wash filter in soap or detergent water and replace after filter is dry. Outdoor Coil Foreign material should not be allowed to accumulate on the outdoor coil surface or other parts in the air circuit. 508197-01 Issue 2137 Page 17 of 22 Cleaning should be as often as necessary to keep the coil clean. To clean the coil, remove the lower access panel and blow out debris by using compressed air or water. Be sure power to unit is shut off before using water to clean the coil. Care should be used when cleaning the coils so that the coil fins are not damaged. Motors The indoor and outdoor fan motors are permanently lubricated and require no maintenance. Condensate Drain Pan Foreign material should not be allowed to clog the drain hole. Inspect and clear drain opening prior to cooling season Accessories WARNING The unit must be installed with approved wall sleeve and louver accessories for safe operation. Improper installations could result in property damage, personal injury, or death. 16 A Required Wall Opening B C Maximum Wall Thickness 29 16-5/8 29-1/8 Wall Sleeve Refer to Table 9 for dimension information. Figure 11. Exterior Wall Page 18 of 22 Issue 2137 508197-01 *MGE4-12-091*P *MGE4-12-121*P *MGE4-12-181*P *MGE4-12-241*P *MGE4-12-301*P *MGE4-14-361*P Sleeve Only Sleeve Plus Extension Wall Sleeves Louvers Wall Sleeve Wall Sleeve Extension Polypropylene Aluminum Louvers Louvers Impact Louvers Model Dimensions (in.) Wall Sleeve Wall Opening Depth (C) Height Height (A) (B) ASLEEVE6-1 --- ALVRP***MGE-1 ALVRAL-1^ ALVRALC-1^ · · · · ASLEEVE8-1 --- ALVRP***MGE-1 ALVRAL-1^ ALVRALC-1^ · · · · ASLEEVE10-1 ASLEEVEXT4-1 ALVRP***MGE-1 ALVRAL-1^ ALVRALC-1^ · · · · ASLEEVE12-1 ASLEEVEXT4-1 ALVRP***MGE-1 ALVRAL-1^ ALVRALC-1^ · · · · ASLEEVE6-2 --- ALVRP***MGE-2 ALVRAL-2^ ALVRALC-2^ · ASLEEVE8-2 --- ALVRP***MGE-2 ALVRAL-2^ ALVRALC-2^ · ASLEEVE10-2 ASLEEVEXT4-2 ALVRP***MGE-2 ALVRAL-2^ ALVRALC-2^ · ASLEEVE12-2 ASLEEVEXT4-2 ALVRP***MGE-2 ALVRAL-2^ ALVRALC-2^ · ASLEEVE6-2 --- --- ALVRAL-7^ --- 29 29-1/8 6 --- 29 29-1/8 8 --- 29 29-1/8 10 14 29 29-1/8 12 16 32-3/4 32-7/8 6 --- 32-3/4 32-7/8 8 --- 32-3/4 32-7/8 10 14 32-3/4 32-7/8 12 16 32-3/4 32-7/8 6 --- ASLEEVE8-2 --- --- ALVRAL-7^ --- 32-3/4 32-7/8 8 --- ASLEEVE10-2 ASLEEVEXT4-2 --- ALVRAL-7^ --- 32-3/4 32-7/8 10 14 ASLEEVE12-2 ASLEEVEXT4-2 --- ALVRAL-7^ --- 32-3/4 32-7/8 12 16 ASLEEVE6-5 --- --- ALVRAL-3^ ALVRALC-3^ 45 45-1/8 6 --- ASLEEVE8-5 --- --- ALVRAL-3^ ALVRALC-3^ 45 45-1/8 8 --- ASLEEVE10-5 ASLEEVEXT4-3 --- ALVRAL-3^ ALVRALC-3^ 45 45-1/8 10 14 ASLEEVE12-5 ASLEEVEXT4-3 --- ALVRAL-3^ ALVRALC-3^ 45 45-1/8 12 16 ASLEEVE6-5 --- ALVRP***MGE-3 · 45 45-1/8 6 --- ASLEEVE8-5 --- ALVRP***MGE-3 · 45 45-1/8 8 --- ASLEEVE10-5 ASLEEVEXT4-3 ALVRP***MGE-3 · 45 45-1/8 10 14 ASLEEVE12-5 ASLEEVEXT4-3 ALVRP***MGE-3 · 45 45-1/8 12 16 ASLEEVE6-5 --- --- ALVRAL-4^ ALVRALC-4^ · 45 45-1/8 6 --- ASLEEVE8-5 --- --- ALVRAL-4^ ALVRALC-4^ · 45 45-1/8 8 --- ASLEEVE10-5 ASLEEVEXT4-3 --- ALVRAL-4^ ALVRALC-4^ · 45 45-1/8 10 14 ASLEEVE12-5 ASLEEVEXT4-3 --- ALVRAL-4^ ALVRALC-4^ · 45 45-1/8 12 16 *** Louver colors: WHT = white, SAN = sandstone, BGE = beige, TPST = taupestone ^ -P: Option to paint standard, aluminum, and impact-resistant louver Optional: Wall sleeves and louvers can be oversized to maintain a uniform appearance NOTE: ALVRP**MGE louvers may not be oversized due to vent pipe and metal grate insert location Table 7. Accessories MagicPak Unit Accessory Nomenclature LP Conversion Kit LP Conversion Kit Table 8. LP Conversion Kits ALPKT613 ALPKT614 · ···· 15MGE4-12-**1*P 24MGE4-**-**1*P 36MGE4-**-**1*P 48MGE4-**-**1*P 60MGE4-**-**1*P 508197-01 Issue 2137 Page 19 of 22 Wiring Diagrams Page 20 of 22 Figure 12. Wiring Diagram - MGE 0.75 Ton through 2 Ton Issue 2137 508197-01 508197-01 Figure 13. Wiring Diagram - MGE 2.5 Ton Issue 2137 Page 21 of 22 Page 22 of 22 Figure 14. Wiring Diagram - MGE 3 Ton Issue 2137 508197-01Adobe PDF Library 16.0 Adobe InDesign 16.4 (Windows)