INSTALLATION INSTRUCTION SINGLE PACKAGE AIR CONDITIONERS AND TABLE OF CONTENTS SINGLE PACKAGE GAS/ELECTRIC UNITS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 DM/DH078 THROUGH 150 SAFETY CONSIDERATIONS . . . . . . . . . . . . . 6 (6-1/2 TO 12-1/2 TON) NOTES CAUTIONS AND WARNINGS . . . . . . 6 (9.0 TO 11.5 EER) APPROVALS. . . . . . . . . . . . . . . . . . . . . . . . . . 6 REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . 6 INSPECTION . . . . . . . . . . . . . . . . .
035-17377-000 (0201) REV A TABLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 6 NOTES CAUTIONS AND WARNINGS . . . . . . . . . . . 6 APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . .
035-17377-000 REV A (0201) LIST OF FIGURES # PG. # # PG. # 1 UNIT SHIPPING BRACKET . . . . . . . . . . . . . . . . . 7 13 CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . .16 2 CONDENSER COVERING . . . . . . . . . . . . . . . . . 7 3 COMPRESSOR SECTION . . . . . . . . . . . . . . . . . 7 14 ELECTRONIC THERMOSTAT FIELD WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 4 PREDATOR™ COMPONENT LOCATION . . . . .8 5 UNIT 4 POINT LOAD . . . . . . . . . . . . . . . . . . . .
035-17377-000 (0201) REV A LIST OF TABLES (CONTINUED) # PG. # # PG. # 21 ELECTRICAL DATA 12-1/2 TON - HIGH EFFICIENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 41 8-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE . . . . . . . . . . . . . . 38 22 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . 24 42 8-1/2 TON OPTIONAL MOTOR SIDE SHOT BLOWER PERFORMANCE . . . . . . . . . . . . . . . 38 23 GAS HEAT LIMIT SETTINGS . . . . . . . . . . . . . .
035-17377-000 REV A (0201) D H 120 N 15 A 2 A AA 1 A TABLE 1: PRODUCT NOMENCLATURE Model # Model Number Description D Product Category D = Air Conditioner, Single Package H Product Identifier M = Standard Efficiency H = High Efficiency 078 = 6-1/2 Ton 090 = 7-1/2 Ton 102 = 8-1/2 Ton 120= 10 Ton 150 = 12-1/2 Ton C = Cooling Only N = Natural Gas, Aluminized Steel S = Natural Gas, Stainless Steel 00 = No Heat Installed 10 = 100 MBH Output Gas Heat 15 = 150 MBH Output Gas Heat 20 = 200 MBH Ou
035-17377-000 (0201) REV A If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. WHAT TO DO IF YOU SMELL GAS Observe all precautions in the literature, labels, and tags accompanying the equipment whenever working on air conditioning equipment.
035-17377-000 REV A (0201) All forms referenced in this instruction may be ordered from: Standard Register 2101 West Tecumseh Road Norman, OK 73069 Toll Free Fax: (877) 379-7920 Toll Free Phone: (877) 318-9675 INSPECTION As soon as a unit is received, it should be inspected for possible damage during transit. If damage is evident, the extent of the damage should be noted on the carrier’s freight bill. A separate request for inspection by the carrier’s agent should be made in writing.
035-17377-000 (0201) REV A Terminal Block for Hi-Voltage Connection Control Board w/ Screw Connector for T-stat Wiring Disconnect Location (Optional Disconnect Switch) Filter Access (2” Filters) Filter-Drier (Solid Core) Condenser Section Second model nameplate inside hinged access panel Belt-Drive Blower Motor Dual stage cooling for maximum comfort Slide-out motor and blower assembly for easy adjustment and service Compressor #2 Access (High-Eff Compressor w/ crankcase heater) Power Ventor Motor
035-17377-000 REV A (0201) TABLE 6: UNIT TEMPERATURE LIMITATIONS Temperature Min. Max. Wet Bulb Temperature (°F) of Air on Evaporator Coil 57 72 All panels must be secured in place when the unit is lifted. Dry Bulb Temperature (°F) of Air on Condenser Coil 0* 125 The condenser coils should be protected from rigging cable damage with plywood or other suitable material. *. A low ambient accessory is available for operation down to -20°F.
035-17377-000 (0201) REV A TABLE 8: 4 POINT LOAD WEIGHT Location (lbs.)* Model A B C D DM078 228 195 285 333 DM090 230 197 287 336 DM102 238 203 296 347 DM120 245 209 305 357 DM150 262 224 327 382 DH078 241 206 300 352 DH090 242 207 301 353 DH102 257 220 321 375 DH120 265 226 330 386 DH150 263 224 327 383 *. FIGURE 6 : UNIT 6 POINT LOAD of Air for Combustion and Ventilation of the National Fuel Gas Code, ANSI Z223.1 – Latest Edition, or Sections 7.
035-17377-000 REV A (0201) Excessive exposure to contaminated combustion air will result in safety and performance related problems. To maintain combustion air quality, the recommended source of combustion air is the outdoor air supply. The outdoor air supplied for combustion should be free from contaminants due to chemical exposure that may be present from the following sources.
035-17377-000 (0201) REV A 30-11/32 See Detail A 50-3/4 Control Entry Ø 7/8 Power Entry Ø 2-1/2 Power Entry Ø 2-1/2 4-1/4 11-1/2 Convenience Power Outlet Entry Ø 7/8 30-3/16 17-3/16 24-3/16 59 FRONT For Baserail Dimensions See Detail B For Drain Dimensions See Detail C 6-3/16 LEFT 89 27 FIGURE 8 : UNIT DIMENSIONS DETAIL A DETAIL B TABLE 10: UNIT CLEARANCES DETAIL C Top* 72” Right 12” Front† 36” Left 36” 36” Bottom** 0” Rear‡ *. Units must be installed outdoors.
035-17377-000 REV A (0201) FIGURE 9 : BOTTOM DUCT OPENINGS (FROM ABOVE) Unitary Products Group 13
035-17377-000 (0201) REV A FIGURE 10 : REAR DUCT DIMENSIONS DUCTWORK Ductwork should be designed and sized according to the methods in Manual D of the Air Conditioning Contractors of America (ACCA) or as recommended by any other recognized authority such as ASHRAE or SMACNA. 14 A closed return duct system should be used. This will not preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be made with flexible joints to minimize noise.
035-17377-000 REV A (0201) FIGURE 11 : PREDATOR™ ROOF CURB DIMENSIONS FIGURE 12 : SUNLINE™ TO PREDATOR™ TRANSITION ROOF CURBS They should NOT be sized to match the dimensions of the duct connections on the unit. Refer to Figure 9 for bottom air duct openings. Refer to Figure 10 for side air duct openings. Unitary Products Group DUCT COVERS Units are shipped with the side duct openings covered. For bottom duct application, no duct cover changes are necessary.
035-17377-000 (0201) REV A When fastening ductwork to side duct flanges on unit, insert screws through duct flanges only. DO NOT insert screws through casing. Outdoor ductwork must be insulated and water-proofed. CONDENSATE DRAIN The side condensate drain is reversible and maybe re-oriented to the rear of the cabinet to facilitate condensate piping. A condensate drain connection is available through the base pan for piping inside the roof curb. Trap the connection per Figure 13.
035-17377-000 REV A (0201) NOTE: Since not all local codes allow the mounting of a disconnect on the unit, please confirm compliance with local code before mounting a disconnect on the unit. Electrical line must be sized properly to carry the load. USE COPPER CONDUCTORS ONLY. Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly fused.
035-17377-000 (0201) REV A FIGURE 15 : FIELD WIRING 24 VOLT THERMOSTAT 18 Unitary Products Group
035-17377-000 REV A (0201) FIGURE 16 : FIELD WIRING DISCONNECT TABLE 12: ELECTRICAL DATA 6-1/2 TON - STANDARD EFFICIENCY Compressors Voltage RLA ea. 208 230 460 575 *. 14.1 14.1 7.1 5.8 LRA ea. 110 110 54 44 OD Fan Motors FLA ea. 1.5 1.5 0.8 0.6 Blower Motor Supply FLA 1.5 HP 6.2 6.2 3.1 2.4 2 HP 8.2 8.2 4.1 3.6 Min. Circuit Ampacity (Amps) Electric Heater Model Numbers Rated kW Heater Amps 1.5 HP 2 HP Max Fuse* Size (Amps) 1.5 HP 2 HP None - - 40.9 42.
035-17377-000 (0201) REV A TABLE 13: ELECTRICAL DATA 6-1/2 TON - HIGH EFFICIENCY Compressors Voltage RLA ea. 208 14.1 230 14.1 460 6.4 575 *. 5.8 LRA ea. 110 110 54 44 OD Fan Motors FLA ea. 1.5 1.5 0.8 0.6 Blower Motor Supply FLA 1.5 HP 6.2 6.2 3.1 2.4 2 HP 8.2 8.2 4.1 3.6 Min. Circuit Ampacity (Amps) Electric Heater Model Numbers Rated kW Heater Amps 1.5 HP 2 HP Max Fuse* Size (Amps) 1.5 HP 2 HP None - - 40.9 42.9 50 50 2TP04510925 6.8 18.7 40.9 42.
035-17377-000 REV A (0201) TABLE 15: ELECTRICAL DATA 7-1/2 TON - HIGH EFFICIENCY Compressors Voltage RLA ea. 14.1 208 14.1 230 7.1 460 5.8 575 *. LRA ea. 110 110 54 44 OD Fan Motors FLA ea. 1.5 1.5 0.8 0.6 Blower Motor Supply FLA 1.5 HP 6.2 6.2 3.1 2.4 2 HP 8.2 8.2 4.1 3.6 Min. Circuit Ampacity (Amps) Electric Heater Model Numbers Rated kW Heater Amps 1.5 HP Max Fuse* Size (Amps) 2 HP 1.5 HP 2 HP None - - 40.9 42.9 50 50 2TP04510925 6.8 18.7 40.9 42.
035-17377-000 (0201) REV A TABLE 17: ELECTRICAL DATA 8-1/2 TON - HIGH EFFICIENCY Compressors Voltage RLA ea. 14.1 208 14.1 230 7.1 460 5.8 575 *. LRA ea. 130 130 64 52 OD Fan Motors FLA ea. 1.5 1.5 0.8 0.6 Blower Motor Supply FLA 2 HP 8.2 8.2 4.1 3.6 3 HP 10.9 10.9 5.3 4.1 Electric Heater Model Numbers Rated kW Heater Amps Min. Circuit Ampacity (Amps) Max Fuse* Size (Amps) 2 HP 3 HP 2 HP 3 HP 50 None - - 42.9 45.6 50 2TP04510925 6.8 18.7 42.9 45.
035-17377-000 REV A (0201) TABLE 19: ELECTRICAL DATA 10 TON - HIGH EFFICIENCY Compressors Voltage RLA ea. 16.0 208 16.0 230 8.3 460 6.4 575 *. LRA ea. 167 167 69 58 OD Fan Motors FLA ea. 3.5 3.5 1.6 1.3 Blower Motor Supply FLA 2 HP 8.2 8.2 4.1 3.6 3 HP 10.9 10.9 5.3 4.1 Min. Circuit Ampacity (Amps) Electric Heater Model Numbers Rated kW Heater Amps 2 HP 3 HP Max Fuse* Size (Amps) 2 HP 3 HP None - - 51.2 53.9 60 60 2TP04511825 13.5 37.5 57.1 60.
035-17377-000 (0201) REV A TABLE 21: ELECTRICAL DATA 12-1/2 TON - HIGH EFFICIENCY Compressors OD Fan Motors FLA ea. Voltage RLA ea. 208 230 460 575 *. 18.9 18.9 9.5 7.6 LRA ea. 146 3.5 146 3.5 73 1.6 58 1.3 Blower Motor Supply FLA 3 HP 10.9 10.9 5.3 5 HP 17.3 17.3 8.6 4.1 6.8 Min. Circuit Ampacity (Amps) Max Fuse* Size (Amps) 3 HP 3 HP Electric Heater Model Numbers Rated kW Heater Amps 5 HP 5 HP None - - 60.4 66.8 70 80 2TP04511825 13.5 37.5 60.5 68.
035-17377-000 REV A (0201) TABLE 22: PHYSICAL DATA (CONTINUED) Models Component 078 090 102 120 150 Propeller Dia. (in., each) 24 24 24 24 24 Motor (HP, each) 1/3 1/3 3/4 3/4 3/4 CFM, Nominal (each) 3400 3400 4400 4400 4400 Propeller Dia. (in., each) 24 24 24 24 24 Motor (HP, each) 1/3 1/3 1/3 3/4 3/4 CFM, Nominal (each) 3400 3400 3400 4400 4400 Rows (each) 1 1 1 1 2 Fins per Inch 20 20 20 20 20 Height (in. each) 24 28 36 44 44 Face Area (ft.
035-17377-000 (0201) REV A GAS HEAT LP UNITS, TANKS AND PIPING All gas heat units are shipped from the factory equipped for natural gas use only. The unit may be converted in the field for use with LP gas with accessory kit model number 1NP0441. All LP gas equipment must conform to the safety standards of the National Fire Protection Association. For satisfactory operation, LP gas pressure must be 10.5 inch W.C. at the unit under full load. Maintaining proper gas pressure depends on three main factors: 1.
035-17377-000 REV A (0201) TABLE 24: GAS PIPE SIZING - CAPACITY OF PIPE 4. All piping should be cleaned of dirt and scale by hammering on the outside of the pipe and blowing out loose particles. Before initial start-up, be sure that all gas lines external to the unit have been purged of air. 5. The gas supply should be a separate line and installed in accordance with all safety codes as prescribed under “Limitations”. 6.
035-17377-000 (0201) REV A ECONOMIZER The economizer can be factory or field installed. If factory installed, refer to the instructions included with the outdoor air hood to complete the assembly. Field installed economizers include complete instructions for installation. RAIN HOOD The following procedure should be used when assembling the economizer rain hood onto a unit.
035-17377-000 REV A (0201) SUPPLY AIR INSTRUCTIONS CHECKING SUPPLY AIR CFM Extreme care must be exercised in turning both the setpoint and minimum position adjusting screws to prevent twisting them off. 2. To check that the damper blades move smoothly without binding carefully turn the minimum position adjusting screw fully clockwise and then energize and de-energize terminals “R to “G”.
035-17377-000 (0201) REV A BELT TENSION The tension on the belt should be adjusted as shown in Figure 20. Procedure for adjusting belt tension: 1. Loosen six nuts (top and bottom) A. 2. Adjust by turning (B). 3. Never loosen nuts (C). 4. Use belt tension checker to apply a perpendicular force to one belt at the midpoint of the span as shown. Deflection distance of 4mm (5/32”) is obtained. To determine the deflection distance from normal position, use a straight edge from sheave to sheave as reference line.
035-17377-000 REV A (0201) TABLE 27: 6-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE* † TURNS OPEN** 0 ESP‡ 0.2 1 2 3 4 CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM - - - - - - 3291 1191 1.28 3096 1059 1.14 2963 5 W† W† BHP CFM 948 1.02 2757 831 0.89 † † BHP 0.4 - - - 3168 1225 1.31 2969 1085 1.16 2658 939 1.01 2535 834 0.89 2255 718 0.77 0.6 3223 1273 1.37 2732 1084 1.16 2500 947 1.02 2110 803 0.86 1923 699 0.
035-17377-000 (0201) REV A TABLE 29: 7-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE* † TURNS OPEN** 0 ESP‡ CFM W†† 1 2 3 4 BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM 5 W† † BHP CFM W† † BHP 0.2 - - - 3715 1573 1.69 3634 1434 1.54 3431 1265 1.36 3218 901 0.97 3024 976 1.05 0.4 3650 1657 1.78 3510 1490 1.60 3320 1313 1.41 3079 1145 1.23 2832 810 0.87 2586 860 0.92 0.6 3334 1522 1.63 3146 1351 1.45 2910 1169 1.25 2621 1005 1.
035-17377-000 REV A (0201) TABLE 31: 8-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE* † TURNS OPEN** ESP‡ CFM 0 1 2 3 4 W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM BHP CFM W†† 5 W†† BHP 0.2 - - - 4090 1816 1.95 3872 1613 1.73 3681 1448 1.55 3420 1271 1.36 3217 1125 1.21 0.4 3783 1778 1.91 3782 1685 1.81 3548 1489 1.60 3334 1325 1.42 3026 1149 1.23 2796 1010 1.08 0.6 3648 1720 1.84 3387 1529 1.64 3123 1340 1.44 2874 1176 1.
035-17377-000 (0201) REV A TABLE 33: 10 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE* † TURNS OPEN** ESP‡ 0 1 2 3 4 5 CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP 0.2 - - - - - - - - - 3896 1639 1.76 3688 1453 1.56 3447 1268 1.36 0.4 4040 2076 2.23 4005 1934 2.07 3790 1698 1.82 3569 1508 1.62 3333 1330 1.43 3057 1147 1.23 0.6 3890 2006 2.15 3697 1790 1.92 3427 1550 1.66 3152 1356 1.
035-17377-000 REV A (0201) TABLE 35: 12-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE* † TURNS OPEN** ESP‡ 0 1 2 3 4 CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† 5 BHP CFM W†† BHP 0.4 5078 3630 3.89 4809 3103 3.33 4594 3053 3.27 4360 2478 2.66 4090 2093 2.24 3812 1798 1.93 0.6 4865 3456 3.71 4584 2961 3.17 4349 2912 3.12 4106 2318 2.49 3814 1964 2.11 - - - 0.8 4642 3284 3.52 4356 2828 3.03 4089 2776 2.98 3840 2137 2.
035-17377-000 (0201) REV A TABLE 37: 6-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE* † TURNS OPEN** 0 ESP‡ CFM W 1 2 3 4 †† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM - - - - - 3367 1216 1.30 3133 1067 1.14 2954 5 W† W† BHP CFM 944 1.01 2701 819 0.88 † † BHP 0.4 - 0.6 - - - 3208 1239 1.33 2913 1068 1.15 2466 913 0.98 2350 789 0.85 1750 621 0.67 0.8 - - - 2651 1058 1.13 2317 894 0.96 1656 700 0.75 - - - - - - 1.
035-17377-000 REV A (0201) TABLE 39: 7-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE* † TURNS OPEN** 0 ESP‡ 0.4 1 2 3 4 5 W† CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM - - - - - - 3736 1476 1.58 3487 1284 1.38 3231 1109 1.19 3001 970 1.04 † BHP 0.6 - - - 3572 1514 1.62 3389 1339 1.44 3094 1151 1.23 2764 972 1.04 2446 824 0.88 0.8 3422 1558 1.67 3179 1364 1.46 2889 1164 1.25 2554 985 1.
035-17377-000 (0201) REV A TABLE 41: 8-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE * † TURNS OPEN** ESP‡ 0 1 2 3 4 5 CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP 0.4 - - - 4220 1873 2.01 3991 1659 1.78 3745 1468 1.57 3470 1283 1.38 3209 1120 1.20 0.6 - - - 3887 1729 1.85 3612 1514 1.62 3357 1330 1.43 3013 1146 1.23 2719 992 1.06 0.8 - - - 3516 1584 1.70 3219 1372 1.47 2903 2903 3.11 2343 966 1.
035-17377-000 REV A (0201) TABLE 43: 10 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE* † TURNS OPEN** ESP‡ 0 1 2 3 4 CFM W†† BHP W†† W†† BHP CFM W†† BHP CFM W†† BHP 0.2 - - - - - - - 0.4 - - - 4515 2192 2.35 4213 0.6 - - - 4192 2027 2.17 3905 0.8 - - - 3838 1858 1.99 1.0 3755 1942 2.08 3489 1695 1.2 3337 1757 1.88 2918 1475 CFM 5 BHP CFM W†† - - 4368 1843 1.98 4132 1624 1.74 3870 1423 1.53 1885 2.02 4020 1692 1.
035-17377-000 (0201) REV A TABLE 45: 12-1/2 TON STANDARD MOTOR SIDE SHOT BLOWER PERFORMANCE* † TURNS OPEN** ESP‡ 0 1 2 3 4 5 CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP CFM W†† BHP 0.4 - - - - - - 5201 3162 3.39 4966 2796 3.00 4681 2405 2.58 4355 2054 2.20 0.6 - - - 5220 3395 3.64 4942 2980 3.20 4657 2608 2.80 4358 2230 2.39 4007 1890 2.03 0.8 - - - 4944 3194 3.43 4661 2806 3.01 4378 2572 2.76 4016 2057 2.
035-17377-000 REV A (0201) NOTES FOR TABLE 27 THROUGH TABLE 46: • Blower performance includes dry coil and two-inch filters. Blower performance for gas heat includes the maximum number of heat tubes available for each tonnage. • • ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been deducted from the total static pressure of the blower.
035-17377-000 (0201) REV A SUPPLY AIR DRIVE ADJUSTMENT New motor Amps 3 = ( Speed increase ) • Amps at 3,750 CFM 3 = ( Speed increase ) • Orignial Amps Before making any blower speed changes review the installation for any installation errors, leaks or undesirable systems effects that can result in loss of airflow. Even small changes in blower speed can result in substantial changes in static pressure and BHP. BHP and AMP draw of the blower motor will increase by the cube of the blower speed.
035-17377-000 REV A (0201) GAS FURNACE OPERATION This furnace is equipped with an automatic ignition system. Do not attempt to manually light the burners. 1. Open the union fitting just upstream of the unit gas valve and downstream from the main manual shut-off valve in the gas supply line. 2. Remove the screws holding each end of the manifold to the manifold supports. 3. Disconnect wiring to the gas valves and spark igniter(s). Remove the manifold & gas valve assembly.
035-17377-000 (0201) REV A 5. If thermostat set temperature is above room temperature, the main burners will ignite. If a second stage of heat is called for, the main burners for second stage heat will ignite for the second stage heat. 5. Set thermostat to call for second stage heat and start furnace. 6.
035-17377-000 REV A (0201) TABLE 50: GAS HEAT STAGES TABLE 51: GAS RATE CUBIC FEET PER HOUR 2nd Stage Input (100% Btuh) 1st Stage Input (60%) Btuh Seconds for One Rev. 1/2 cu. ft. 1 cu. ft.
035-17377-000 (0201) REV A COOLING OPERATION INSTRUCTIONS SEQUENCE OF OPERATIONS COOLING SYSTEM PRELIMINARY OPERATION OVERVIEW After installation has been completed, energize the crankcase heaters for at least four hours before operating unit. After this initial warm-up, the compressors should be given three false starts (energized just long enough to make a few revolutions) with 5-7 minutes of delay between each start before being put into full time service.
035-17377-000 REV A (0201) PROTECTION The compressors also have inherent (internal) protection. If there is an abnormal temperature rise in a compressor, the protector will open to shut down the compressor. The UCB incorporates features to minimize compressor wear and damage. An anti-short cycle delay (ASCD) is utilized to prevent operation of a compressor too soon after its previous run. Additionally, a minimum run time is imposed any time a compressor is energized.
035-17377-000 (0201) REV A FREEZESTAT During cooling operation, if a freezestat opens, the UCB will de-energize the associated compressor, initiate the ASCD, and, if the other compressor is idle, stop the condenser fans. If the call for cooling is still present at the conclusion of the ASCD, the UCB will re-energize the halted compressor. Should a freezestat open three times within two hours of operation, the UCB will lock-out the associated compressor and flash a code (Table 60).
035-17377-000 REV A (0201) FLAME SENSE PRESSURE SWITCH Flame sensing occurs at all times. If “W1” is not present and a flame is sensed for 2 seconds, the draft motor is energized and the main valve is kept off. The ICB halts any operation until a flame is not detected. Once the flame detection is lost, the ICB performs a post-purge. Normal operation is allowed concurrently with the purge (i.e. this purge can be considered the purge associated with a call for “W1”).
035-17377-000 (0201) REV A TABLE 52: 6.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 2500 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 55 57 59 61 63 65 67 69 71 73 75 65 21.9 22.6 23.2 23.9 24.6 25.3 26.0 27.4 28.9 30.4 31.9 70 18.1 19.1 20.0 21.0 22.0 22.9 23.9 25.5 27.2 28.9 30.5 75 14.4 15.6 16.8 18.1 19.3 20.6 21.8 23.7 25.5 27.3 29.1 80 10.6 12.1 13.7 15.2 16.7 18.2 19.8 21.8 23.8 25.8 27.8 85 6.
035-17377-000 REV A (0201) TABLE 54: 8.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 3400 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 55 57 59 61 63 65 67 69 71 73 75 65 5.5 8.5 11.5 14.4 17.4 20.3 23.3 25.0 26.6 28.3 29.9 70 - 6.4 9.6 12.7 15.9 19.1 22.3 24.1 25.9 27.7 29.5 75 - - 7.7 11.1 14.5 17.9 21.3 23.2 25.1 27.0 29.0 80 - - 5.7 9.4 13.0 16.6 20.2 22.3 24.4 26.4 28.5 85 - - - 7.7 11.5 15.
035-17377-000 (0201) REV A TABLE 56: 12.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 5000 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 55 57 59 61 63 65 67 69 71 73 75 65 33.6 34.2 34.7 35.3 35.9 36.4 37.0 37.3 37.5 37.8 38.0 70 29.6 30.4 31.1 31.9 32.7 33.4 34.2 34.7 35.3 35.8 36.3 75 25.6 26.6 27.5 28.5 29.5 30.5 31.4 32.2 33.0 33.8 34.6 80 21.6 22.8 24.0 25.1 26.3 27.5 28.6 29.7 30.8 31.8 32.
035-17377-000 REV A (0201) TABLE 58: 7.5 TON HIGH EFFICIENCY SUPERHEAT CHARGING Superheat at Compressor Suction (°F) Airflow = 3000 CFM Outdoor Temp (°F) Indoor WB Temp (°F) 55 57 59 61 63 65 67 69 71 73 75 65 19.6 20.8 22.0 23.2 24.4 25.6 26.9 28.4 29.9 31.4 32.9 70 16.0 17.2 18.4 19.7 20.9 22.1 23.4 25.4 27.4 29.4 31.4 75 12.3 13.6 14.8 16.1 17.3 18.6 19.9 22.4 24.9 27.4 29.9 80 8.7 10.0 11.2 12.5 13.8 15.1 16.4 19.4 22.4 25.4 28.4 85 5.1 6.
035-17377-000 (0201) REV A NORMAL MAINTENANCE GAS FURNACE UNITS BURNER Prior to any of the following maintenance procedures, shut off all power to the unit to prevent personal injury. Periodically (at least annually at the beginning of each heating season) make a visual check of the main burner flame. If it is not possible to adjust for the proper flame, the burners may need cleaning.
035-17377-000 REV A (0201) TROUBLESHOOTING TABLE 60: UNIT CONTROL BOARD FLASH CODES Flash Code Control Failure - Replace Control Heart Beat Normal Operation 1 Flash Troubleshooting of components may require opening the electrical control box with the power connected to the unit. Use extreme care when working with live circuits! Check the unit nameplate for the correct line voltage and set the voltmeter to the correct range before making any connections with line terminals.
035-17377-000 (0201) REV A TABLE 61: IGNITION CONTROL FLASH CODES FLASHES FAULT CONDITIONS CHECK STEADY OFF No Power Or Control Failure Monitored Systems Problem? 24VAC or Control No No Call for Heating? Programming? Yes Yes Program Unit Control Board Call for Heat Yes Trip/Failure Loss of Call for Heating? No Yes Heat Off No Call for 2nd Stage Cooling No Energize ID Blower Motor Monitor Call for Cooling? Yes Yes No Yes No Turn off ID Blower Motor Yes Fan on >30 secs? No
035-17377-000 REV A (0201) Power to Unit Call for heat? No Initialize ASCD Yes Voltage @ Gas Valve? Yes No Energize ID Blower Montior FIGURE 24 : POWER ON FLOW CHART Unitary Products Group 57
035-17377-000 (0201) REV A FIGURE 25 : TRIP FAILURE FLOW CHART 58 Unitary Products Group
035-17377-000 REV A (0201) COOLING OPERATIONS On calls for cooling, if the compressors are operating but the supply air blower motor does not energize after a short delay (the room thermostat fan switch is in the “AUTO” position). 1. If installed, check the position of the economizer blades. If the blades are open, the economizer is providing free cooling and the compressors will not immediately operate.
035-17377-000 (0201) REV A should be flashing an alarm code. If not, press and release the ALARMS button on the UCB. The UCB will flash the last five alarms on the LED. If the compressor is locked out, cancel any call for cooling. This will reset any compressor lock outs. On calls for the second stage of cooling, the supply air blower motor and compressor #1 are operating but compressor #2 is not (the room thermostat fan switch is in the “AUTO” position). 1.
035-17377-000 REV A (0201) ALARMS button on the UCB. The UCB will flash the last five alarms on the LED. If the compressor is locked out, remove any call for cooling at the thermostat or by disconnecting the thermostat wiring at the Y2 UCB terminal. This will reset any compressor lock outs. 6. If 24 volts is not present at M1, check for 24 volts at the UCB terminal, C1. If 24 volts is present, check for loose wiring between C1 and the compressor contactor. 7.
035-17377-000 (0201) REV A For units with economizers:If 24 volts is present at the Y1 “OUT” terminal, check for 24 volts at the Y1 “ECON” terminal. If 24 volts is not present, check for loose wiring from the Y1 “OUT” terminal to the Mate-N-Lock plug, a poor connection between the UCB and economizer Mate-NLock plugs, loose wiring from the Mate-N-Lock plug to the economizer, back to the Mate-N-Lock plug, and from the Mate-N-Lock plug to the Y1 “ECON” terminal.
035-17377-000 REV A (0201) 1. Check for 24 volts at the spark ignitor from the ignition control board (ICB). Check the 24-volt wiring from the ICB to the spark ignitor. Check for 24 volts at the ICB spark ignitor terminal. 2. Check the ground wiring for the ICB and the gas valve is intact and making good electrical connection. Check the ceramic insulator on the spark ignitor for breaks or cracks. Replace the spark ignitor if damaged. 3.
NOTES Subject to change without notice. Printed in U.S.A. Copyright © by Unitary Products Group 2001. All rights reserved.
035-17377-000 REV A (0201) GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . .6 NOTES CAUTIONS AND WARNINGS . . . . . . . . . . . 6 COOLING OPERATION INSTRUCTIONS . . . . . . .46 COOLING SYSTEM PRELIMINARY OPERATION . . . . 46 TURN ON THE POWER TO THE UNIT . . . . . . . . . . . . . 46 POST START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . 46 APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
035-17377-000 REV A (0201) 66 Unitary Products Group
035-17377-000 REV A (0201) 1 UNIT SHIPPING BRACKET . . . . . . . . . . . . . . . . . 7 2 CONDENSER COVERING . . . . . . . . . . . . . . . . . 7 3 COMPRESSOR SECTION . . . . . . . . . . . . . . . . . 7 4 PREDATOR™ COMPONENT LOCATION . . . . .8 5 UNIT 4 POINT LOAD . . . . . . . . . . . . . . . . . . . . . . 9 6 UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . 10 7 UNIT 6 POINT LOAD . . . . . . . . . . . . . . . . . . . . . 10 8 UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . .
035-17377-000 REV A (0201) 68 Unitary Products Group
035-17377-000 REV A (0201) 1 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . 5 2 AIRFLOW ABBREVIATIONS . . . . . . . . . . . . . . . . 5 3 INSTALLATION ABBREVIATIONS . . . . . . . . . . . 5 4 ADDITIONAL OPTIONS ABBREVIATIONS . . . . 5 5 UNIT VOLTAGE LIMITATIONS . . . . . . . . . . . . . . 8 6 UNIT TEMPERATURE LIMITATIONS . . . . . . . . . 9 7 UNIT WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 4 POINT LOAD WEIGHT . . . . . . . . . . . . . . . . . .
035-17377-000 REV A (0201) 50 GAS HEAT STAGES . . . . . . . . . . . . . . . . . . . . 45 51 GAS RATE CUBIC FEET PER HOUR . . . . . . . 45 52 6.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING . . . . . . . . . . . . . . . . 50 53 7.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING . . . . . . . . . . . . . . . . 50 54 8.5 TON STANDARD EFFICIENCY SUPERHEAT CHARGING . . . . . . . . . . . . . . . . 51 55 10 TON STANDARD EFFICIENCY SUPERHEAT CHARGING . . . . . . . . . . . . . . . . 51 56 12.
