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-2 & MPH*1M414A-2 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.
INSTALLATION AND MAINTENANCE INSTRUCTIONS MPC*1M414A-2 & MPH*1M414A-2 RESIDENTIAL PACKAGED UNITS Air Conditioners and Heat Pumps 05/2021 THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER FOR FUTURE REFERENCE WARNING Installation and servicing of air conditioning equipment can be hazardous due to internal refrigerant pressure and live electrical components. Only trained and this equipment. Installation and service performed by Table of Contents Unit Dimensions ...................................................
Unit Dimensions - Small Base Air Conditioners & Heat Pumps 47.66 2.33 11.49 TOP VIEW 2.48 1.98 16.77 14.02 RETURN AIR SUPPLY AIR 47.66 2.33 11.49 16.07 18.52 POWER ENTRY POWER ENTRY 6.94 3.25 20.31 4.56 21.06 23.19 SIDE VIEWS CONDENSATE DRAIN 3/4 NPT 40.89 21.63 13.21 TYPICAL DRAIN LOCATION 3.87 13.44 POWER ENTRY 1-1/8 DIA. KNOCKOUT 3.62 13.44 LOW VOLTAGE ENTRY 7/8 DIA. KNOCKOUT 34.19 17.07 14.32 29.59 12.12 6.20 3.07 Page 2 of 19 ELECTRIC HEAT POWER ENTRY 5.86 6.20 4.
Unit Dimensions - Large Base Air Conditioners & Heat Pumps 56.13 2.11 2.33 11.49 TOP VIEW 2.39 19.49 19.49 RETURN AIR SUPPLY AIR 2.33 11.49 47.66 16.07 18.52 POWER ENTRY POWER ENTRY 6.94 3.25 10.06 25.81 26.56 SIDE VIEWS 28.68 44.89 21.63 CONDENSATE DRAIN 3/4 NPT 13.21 TYPICAL DRAIN LOCATION 18.19 18.19 3.87 POWER ENTRY 1-1/8 DIA. KNOCKOUT 3.62 LOW VOLTAGE ENTRY 7/8 DIA. KNOCKOUT 4.06 33.59 17.07 14.32 38.19 12.14 4.20 6.20 ELECTRIC HEAT POWER ENTRY 6.20 3.76 mrcool.
Roof Curb Dimensions - Small Base Air Conditioners & Heat Pumps 3/4 (19) RETURN OPENING Opening for Power Entry Through Unit Base 5-1/2 x 5-5/8 in. (140 x 31 mm) 44-3/8 (1127) 16-7/8 (429) 11-1/2 (287) Insulated Panels 5-3/4 (146) 1( 25 ) 5-1/2 (140) 44-3/8 (1127) Opening for Power Entry Through Unit Base 3 x 13 in. (76 x 330 mm) 3 (76) 17-1/4 (438) 13 (330) 1-3/8 (35) 3-3/4 (95) NOTE - Roof deck may be omitted within confines of curb. Page 4 of 19 mrcool.
Roof Curb Dimensions - Large Base Air Conditioners & Heat Pumps 3/4 (19) Opening for Power Entry Through Unit Base 5-1/2 x 5-5/8 in. (140 x 31 mm) 44-3/8 (1127) 1( Insulated Panels 19-1/2 (380) 11-1/2 (287) 2-1/8 (54) 25 RETURN OPENING ) SUPPLY OPENING 22-7/8 (581) 52-7/8 (1343) 3-3/4 (95) 7( 19-1/2 (380) 11-1/2 (287) 8 (203) 14 (356) 18 (457) 24 (610) 17 8) 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.
Adjustable Roof Curb Dimensions - Small Base Air Conditioners & Heat Pumps CLIPLOCK CORNER DETAIL Top Edge Wood Nailer Strip CURB PROFILE Bottom Flange 1 1/2 Typical Slot Typical Locking Tab NOTE: See Cliplock 1000 installation instructions for complete assembly and installation procedures and requirements.
Adjustable Roof Curb Dimensions - Large Base Air Conditioners & Heat Pumps CLIPLOCK CORNER DETAIL Top Edge Wood Nailer Strip Bottom Flange CURB PROFILE 1 Typical Slot 1/2 Typical Locking Tab NOTE: See Cliplock 1000 installation instructions for complete assembly and installation procedures and requirements.
Location WARNING Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional agency. Installation These instructions explain the recommended method of installation of the packaged heat pump and air conditioner units and associated electrical wiring. This unit is designed and approved for use as a selfcontained air-to-air outdoor heat pump and air conditioner system.
• cooling operation, ignition, input rate, temperature installation instructions. Compressor Units are shipped with compressor mountings factory adjusted and ready for operation. Do not loosen compressor mounting bolts. Clearances Roof Curb Installation made from wood or class A, B, or C roof covering material. Prior to setting the unit on the roof curb, the shipping bracket located underneath the unit must be removed.
Electrical Wiring CAUTION High Voltage Power Entry Electrical Code recommendations, local codes, and applicable requirements of UL Standards, or in accordance with Canadian Electrical Code recommendations, local codes, or CSA Standards. Power wiring, disconnect means, and over-current protection are to be supplied by the installer. Refer to the unit rating plate for maximum over-current protection and minimum circuit ampacity, as well as operating voltage.
Thermostat The room thermostat should be located on an inside wall where it will not be subject to drafts, sun exposure, manufacturer’s instructions enclosed with the thermostat for general installation procedure. Color-coded insulated wires (#18 AWG) should be used to connect the thermostat installed and wired at the factory. Duct attachment screws Do not connect C connections except when required by the indoor thermostat. Refer to the thermostat installation instructions. ! CAUTION installation.
Condensate Drain Crankcase Heater (if used) This package unit is equipped with a 3/4” FPT coupling for condensate line connection. Plumbing must conform to local codes. Use a sealing compound on male pipe threads. Do not operate unit without a drain trap. The condensate drain is on the negative pressure side of the blower; therefore, air being pulled through the condensate line will prevent positive drainage without a proper trap.
heater sequencers as well as the indoor blower. Upon satisfying auxiliary heat demand, the thermostat opens DEFROST TIMING PINS (P1) continues to operate until all heating elements have turned TEST PINS DIAGNOSTIC LEDS Defrost System COMPRESSOR DELAY PINS The defrost system includes two components: the defrost thermostat and the defrost control. REVERSING VALVE Defrost Thermostat S87 LOW PRESSURE SWITCH The defrost thermostat is located on the evaporator coil.
3. At the end of the defrost cycle, when the unit goes back to heating mode, the low pressure switch is checked to see if it has reset. If so, the strikeout is not counted. This prevents lockout during extreme winter conditions. Defrost Control Timing Pins compressor run time period during one thermostat run cycle. This time period must occur before a defrost cycle is initiated. The defrost interval can be adjusted to 30 (T1), 60 (T2), or 90 (T3) minutes.
System Performance Model Liquid Subcooling +/- 2° 2 Ton 25 2.5 Ton 15 3 Ton 28 Ensure unit is installed per manufacturer’s instructions 3.5 Ton 20 the following tables for proper performance value. The indoor metering device varies by model; when checking 4 Ton 35 5 Ton 28 This equipment is a self-contained, factory optimized refrigerant system, and should not require adjustments to system charge when properly installed. If unit performance is questioned, perform the following checks.
Condenser Coil Clean condenser coil annually with water and inspect monthly during the cooling season. Condenser coil may need to be cleaned at startup in case oil from the manufacturing process is found on the condenser coil. Table 7. Cooling Performance - AC Models 80 DB / 67 WB Deg.
Table 9. Cooling Performance - HP Models 80 DB / 67 WB Deg.
CRANK CASE HEATER (IF USED) HR1 Figure 8. Connections Diagram - A/C Constant Torque BLK BLK T1 L1 R S L2 CONTACTOR K1-2 T2 GRY YEL J1-2 PUR YEL W/ STRIPE F C H C12 DUAL CAPACITOR K1-1 CONTACTOR COMPRESSOR B1 C BLK LINE VOLTAGE FIELD INSTALLED 208/230-1-60 POWER SUPPLY WITH MIN.
DS1 (GREEN) DS2 (RED) ON Slow Flash Also, when a pressure switch opens and caused a short cycle lockout, the pressure switch-open code will be seen until it closes, then the short cycle lockout code will flash unless it has already expired. Note: Because the Pressure Switches are monitored only when "Y1" (Input) is active, the code for pressure switch open will not be seen when "Y1" is off. Instead, the "Normal Operation" or "Anti Short Cycle" code will be seen.
Signature Series MPC*1M414A-2 & MPH*1M414A-2 Residential Package ELECTRICIAN and/or HVAC TECHNICIAN: LICENSE #: INSTALLATION DATE: INSTALLATION LOCATION: SERIAL NUMBER:
