Carrier SYNERGY 38YD- Manuals

Page 2 - Step 5—Make Piping Connections; Fig. 2—Unit Reference Drawing

with a FK4 or FC4 fan coil, no TXV change is necessary sincethese fan coils are factory-equipped with proper TXV. Install TXV kit to indoor coil as follows: 1. Install suction tube adapter. 2. Install liquid flare-to-sweat adapter. 3. Install TXV on liquid flare-to-sweat adapter. 4. Connect external...

Page 3 - Table 1—Refrigerant Connections and Recom-; UNIT; Fig. 3—Accessory Heat Pump Feet; Fig. 5—Positioning of Sensing Bulb; SENSING BULB

In some cases noise in the living area has been traced to gaspulsations from improper installation of equipment. INSTALLATION RECOMMENDATIONS 1. Locate the unit away from windows. 2. Ensure that vapor and liquid tube diameters are appropriate to the capacity of the unit. (See Table 1.) 3. Run refrig...

Page 4 - Step 6—Make Electrical Connections; Fig. 6—Piping Installation; THROUGH THE WALL; Fig. 7—Line Power Connections

Step 6—Make Electrical Connections To avoid personal injury or death, do not supply power to unitwith compressor terminal box cover removed. Be sure field wiring complies with local and national fire, safety,and electrical codes, and voltage to system is within limits shownon unit rating plate. Cont...

Page 5 - Step 7—Install Electrical Accessories; If an LCC is desired, the low-speed airflow must be; Table 2—58MVP Airflow Selection

HP-EFF be used for the TYPE selection to maximize efficiency.Refer to the FK4B Installation Instructions for other TYPEselections. This fan coil has an adjustable blower off delay factoryset at 90 sec for high and low operation. Step 7—Install Electrical Accessories Refer to the individual instructi...

Page 6 - Fig. 8—Typical Circuit Connections

Fig. 8—Typical Circuit Connections A93573 G Y E L O C G Y1 R L O Y2 C R Y1 L O Y2 TWO SPEED THERMOSTAT TRANS. TWO SPEED HEAT PUMP H R1 C R C W2 W2 W2 E W3 W3 A93106 G W2 E W3 L O C G W2 Y2 R L O Y1 C R Y2 L O Y1 TWO SPEED THERMOSTAT TRANS. TWO SPEED HEAT PUMP A R C E W2 W3 Y1 Y/Y2 A93574 H G W Y C G...

Page 7 - Step 9—Checking Charge; When the 2-speed unit is operating at low speed cooling,; SYSTEM FUNCTIONS; Cooling Operation

5. Set room thermostat at desired temperature. The factory accessory indoor thermostats are 2-stage, with approximately2°F difference between stages. Be sure the set point is belowindoor ambient and is low enough to energize desired speed. 6. Set room thermostat at COOL or HEAT and fan switch at FAN...

Page 8 - Table 5—Ambient Temperatures for High- and; High Speed; Table 6—Function Light Code

between first and second stages. After second stage is satisfied, theunit will return to low-speed operation until first stage is satisfiedor until second stage is required again. Heating Operation This product utilizes a 2-stage heating indoor thermostat. The firststage of heating is heat pump oper...

Page 9 - Fig. 11—LED And Potentiometer Location

Second-Stage Latching During normal operation, the compressor operates at low speed tosatisfy first stage of the indoor thermostat. If the indoor thermostattemperature increases 2 degrees, the compressor shifts into high-speed operation. When the indoor thermostat temperature issatisfied, the compre...

Page 10 - Table 8—Compressor PTC Ranges; COMPRESSOR INTERNAL PTC RESISTANCE

Defrost will always be done in high speed, regardless if unitoperation requires low speed unless zoning is selected. Duringdefrost, the unit operates in high speed, energizes the reversingvalve O and auxiliary heat W2, and de-energizes the outdoor fan.Upon termination, there is be a 20-sec delay in ...

Page 11 - WINDING; Mechanically Interlocked Contactors; CARE AND MAINTENANCE; Fig. 13—Header Pin Housing Configuration; Fig. 14—Resistance Values Versus Temperature; THERMISTOR CURVE

2-Speed Compressor The 2-speed compressor contains motor windings that providelow-speed 4-pole (1750 rpm) and high-speed 2-pole (3500 rpm)operation. Refer to Table 9 for appropriate winding resistances.Refer to unit wiring label for winding configuration. Table 9—Two-Speed Compressor (Winding Resist...

Carrier SYNERGY 38YD- Manuals

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User Manual Carrier SYNERGY 38YD

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