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The Signature Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician.
Please read this manual carefully before installation and keep it for future reference.
Owner & Installation
Manual
Signature Series
MPC*1M414A & MPH*1M414A
Residential Packaged Units
Due to updates and constantly improving performance, the information and instructions within this
manual are subject to change without notice. Please visit www.mrcool.com/documentation to
ensure you have the latest version of this manual.
Version Date: 1-4-2023
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Table of Contents
Related Manuals for MrCool Signature MPC 1M414A Series
Summary of Contents for MrCool Signature MPC 1M414A Series
- Page 1 MPC*1M414A & MPH*1M414A Residential Packaged Units Due to updates and constantly improving performance, the information and instructions within this manual are subject to change without notice. Please visit www.mrcool.com/documentation to ensure you have the latest version of this manual. Version Date: 1-4-2023...
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Page 2: Table Of Contents
Wiring Diagrams ............21 unqualified persons can result in property damage, personal injury, or death. Manufactured By WARNING MRCOOL LLC 48 Remington Way Do not store combustible materials, including gasoline Hickory, KY 42051 and other flammable vapors and liquids, near the unit, vent pipe, or warm air ducts. -
Page 3: Unit Dimensions
DRAIN 3/4 NPT 13.21 TYPICAL DRAIN LOCATION 3.87 POWER ENTRY 1-1/8 DIA. KNOCKOUT 3.62 13.44 13.44 LOW VOLTAGE ENTRY 7/8 DIA. KNOCKOUT 34.19 29.59 17.07 14.32 ELECTRIC HEAT POWER ENTRY 12.12 6.20 6.20 3.07 5.86 4.06 Page 2 of 23 mrcool.com... - Page 4 DRAIN 3/4 NPT 13.21 TYPICAL DRAIN LOCATION POWER ENTRY 3.87 1-1/8 DIA. KNOCKOUT 18.19 18.19 3.62 LOW VOLTAGE ENTRY 7/8 DIA. KNOCKOUT 4.06 33.59 38.19 17.07 14.32 ELECTRIC HEAT POWER ENTRY 12.14 4.20 6.20 6.20 3.76 mrcool.com Page 3 of 23...
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Page 5: Roof Curb Dimensions
(438) (76) 1-3/8 44-3/8 (35) (1127) (330) 3-3/4 (95) Opening for Power Entry Through Unit Base 3 x 13 in. (76 x 330 mm) NOTE - Roof deck may be omitted within confines of curb. Page 4 of 23 mrcool.com... - Page 6 (581) 18 (457) 24 (610) 52-7/8 (1343) 3-3/4 (95) Opening for Power Entry Through Unit Base 3 x 13 in. (76 x 330 mm) NOTE - Roof deck may be omitted within confines of curb. mrcool.com Page 5 of 23...
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Page 7: Adjustable Roof Curb Dimensions
44-3/8 11-5/8 Insulated Panels 2-1/8 13-7/8 5-3/4 5-1/2 11-5/8 17-1/4 3-1/2 13-1/2 44-3/8 1-3/8 3-5/8 Bottom Curb Assembly Opening for Power Entry thru base NOTE - Roof deck may be omitted within confines of curb. Page 6 of 23 mrcool.com... - Page 8 19-5/8 44-3/8 11-5/8 Insulated Panels 2-1/8 19-3/8 5-3/4 11-5/8 23-1/8 3-1/2 13-1/2 52-7/8 6-7/8 3-1/2 Bottom Curb Assembly Opening for Power Entry thru base NOTE - Roof deck may be omitted within confines of curb. mrcool.com Page 7 of 23...
- Page 9 Built-In Drip Edge Unit Base Rail 3/4 (76) Unit Base Rail Clips (4) (152) 42-7/8 (1089) (25) Supply Return 11-1/2 (292) Opening Opening 2-1/ 8 (54) Usage 24,30,36 42-7/8 1089 13-7/8 16-7/8 42,48,60 51-3/8 1305 19-1/2 19-1/2 Page 8 of 23 mrcool.com...
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Page 10: Installation
The heat exchanger, components, duct system, air outdoor air stream. The outdoor fan is not designed to filters and evaporator coil must be thoroughly cleaned operate against any additional static pressure. following final construction clean-up. Page 9 of 23 mrcool.com... - Page 11 For any future service, installer must provide access to of 42 inches. screws of top and rear panels. Table 1. Minimum Clearances Field-Provided Lifting Spreaders Recommended Shipping Bracket and Mounting Screws Must be Removed for Rooftop or Downflow Application Figure 1. Page 10 of 23 mrcool.com...
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Page 12: Electrical Wiring
Operating pressures for units charged with HFC-410A changed are higher than pressures in units charged with HCFC- 22. All service equipment MUST be rated for use with Figure 3. 208/230 Line Voltage Wiring HFC-410A refrigerant. Page 11 of 23 mrcool.com... -
Page 13: Duct System
A closed return duct system shall be used. This shall not Table 2. Unit Air Filter Sizes - inches preclude use of economizers or outdoor fresh air intake. It is recommended that supply and return duct connections at the unit be made with flexible joints. Page 12 of 23 mrcool.com... -
Page 14: Condensate Drain
Trap must be deep enough to offset maximum static difference (generally, 3 inches (76 mm) minimum). In addition, the drain line must be supported if longer than 10 feet. Trap must be primed at start-up. Figure 5. Typical Condensate Drain Connection Page 13 of 23 mrcool.com... -
Page 15: Sequence Of Operation
NOTE: When checking the ohms across a sensor, be heater sequencers as well as the indoor blower. Upon aware that a sensor showing a resistance value that is not satisfying auxiliary heat demand, the thermostat opens Page 14 of 23 mrcool.com... - Page 16 The ambient sensor considers outdoor temperatures detailed description of the defrost system operation. below -35°F (-37°C) or above 120°F (48°C) as a fault. If the ambient sensor is detected as being open, shorted or out Page 15 of 23 mrcool.com...
- Page 17 (T1), 60 (T2), or 90 (T3) minutes. It is intended that this defrost when the liquid line warms up to 60°F. product should be set at the 60-minute time interval at initial installation. If the timing selector jumper is not in Page 16 of 23 mrcool.com...
- Page 18 If a pressure switch opens while the Y1 Out line is engaged, The delay is bypassed by placing the timer select jumper a 5-minute short cycle will occur after the switch closes. across the TEST pins for 0.5 seconds. Page 17 of 23 mrcool.com...
- Page 19 It is critical that the exact charge is re-installed. Failure to comply will compromise system performance. If unit performance is still questionable, check for refrigerant related problems, such as blocked coil or circuits, malfunctioning metering device or other system components. Page 18 of 23 mrcool.com...
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Page 20: Maintenance
Table 8. Cooling Performance - AC Models 80 DB / 67 WB Deg. Air Temperature Entering Evaporator Coil, Degree F Return Air Cooling Input Pressure 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° (1000 BTU) Suction Liquid Page 19 of 23 mrcool.com... - Page 21 Table 9. Heating Performance - HP Models 70 Deg. F Return Air Air Temperature Entering Evaporator Coil, Degree F Cooling Input Pressure 0° 5° 10° 17° 20° 25° 35° 40° 47° 50° 55° 60° (1000 BTU) Suction Liquid Page 20 of 23 mrcool.com...
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Page 22: Wiring Diagrams
Wiring Diagrams Figure 9. Connections Diagram - A/C Constant Torque Page 21 of 23 mrcool.com... - Page 23 Figure 10. Connections Diagram - Heat Pump Constant Torque (2-ton) Page 22 of 23 mrcool.com...
- Page 24 Figure 11. Connections Diagram - Heat Pump Constant Torque (2.5 - 5-ton) Page 23 of 23 mrcool.com...
- Page 25 Signature Series MPC*1M414A & MPH*1M414A Residential Package ELECTRICIAN and/or HVAC TECHNICIAN: LICENSE #: INSTALLATION DATE: INSTALLATION LOCATION: SERIAL NUMBER:...