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Carrier 50VQP084-300 a50-8163, Fig. 39 FP1 and FP2 Thermistor Location

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a50-8163

LEGEND

Fig. 39 — FP1 and FP2 Thermistor Location

COAX — Coaxial Heat Exchanger

Airflow

Refrigerant Liquid Line Flow

SUCTIO N

COMPRESSOR

DISCHARGE

COAX

EXP ANSION

VA LV E

FP 2 FP 1

LIQUI D

LIN E WA TER IN WA TER OUT

CONDENSA TE

OVERFLO W

(CO)

AIR COI L

FREEZ E

PROTECTIO N

WA TE R

COI L

PROTECTIO N

THERMIST OR

( °C) ( °C)

AI R

COI L

AIRFLOW AIRFLO W

Contents

Main Installation, Start-Up, and Service Instructions CONTENTS SAFETY CONSIDERATIONS GENERAL INSTALLATION Step 1 Check Jobsite Step 2 Check Unit Table 1 50VQP Unit Physical Data Fig. 1 Typical 50VQP Unit Installation Fig. 2 50VQP084-150 Unit Dimensions a50-8436 ALL CONFIGURATIONS REQUIRE SERVICE ACCESS AREA SHOWN BELOW Fig. 3 50VQP168-300 Unit Dimensions a50-8437 ALL CONFIGURATIONS REQUIRE SERVICE ACCESS AREA SHOWN BELOW Step 3 Locate Unit Step 4 Mount the Unit Page Page Step 5 Check Duct System Step 6 Install Condensate Drain Step 7 Pipe Connections Step 8 Field Power Supply Wiring Table 2 Water Quality Guidelines Pressure- Temperature Plugs Fig. 26 Typical Ground-Water Piping Installation Boiler Drains Strainer Field-Installed Accessory (16 to 20 mesh recommended for filter sediment) Fig. 27 50VQP084-168 Unit with Complete C Control (Typical) a50-8438 Fig. 28 50VQP084-168 with Deluxe D Control (Typical) a50-8439 NOTE: Reversing valve is on in Cooling mode. Fig. 30 PremierLink Controller Applications with Deluxe D Control Fig. 29 PremierLink Controller Applications with Complete C Control NOTE: Reversing valve is on in Cooling mode. Table 3 50VQP Unit Electrical Data Standard Unit Table 4 50VQP Unit Electrical Data Dual Point Power Unit Step 9 Field Control Wiring PRE-START-UP System Checkout Airflow and External Static Pressure Table 5 50VQP084 Blower Performance Data Table 6 50VQP096 Blower Performance Data Table 6 50VQP096 Blower Performance Data (cont) Table 7 50VQP120 Blower Performance Data Table 7 50VQP120 Blower Performance Data (cont) Table 8 50VQP150 Blower Performance Data Table 8 50VQP150 Blower Performance Data (cont) Table 9 50VQP168 Blower Performance Data Table 10 50VQP192 Blower Performance Data Table 10 50VQP192 Blower Performance Data (cont) Table 11 50VQP240 Blower Performance Data Table 11 50VQP240 Blower Performance Data (cont) Table 12 50VQP300 Blower Performance Data Table 12 50VQP300 Blower Performance Data (cont) FIELD SELECTABLE INPUTS Complete C Control Jumper Settings (See Fig. 27) Complete C Control DIP Switches Deluxe D Control Jumper Settings (See Fig. 28) Deluxe D Control DIP Switches Deluxe D Control Accessory Relay Configura- tions START-UP Operating Limits Start Up System Scroll Compressor Rotation Unit Start-Up Cooling Mode Unit Start-Up Heating Mode Flow Regulation Flushing Antifreeze Cooling Tower/Boiler Systems Ground Coupled, Closed Loop and Plateframe Heat Exchanger Well Systems OPERATION Power Up Mode Units with Aquazone Complete C Control Units with Aquazone Deluxe D Control COMPLETE C AND DELUXE D BOARD SYSTEM TEST Test Mode Table 20 Complete C Control Current LED Status and Alarm Relay Operations Table 21 Complete C Control LED Code and Fault Descriptions Table 22 Aquazone Deluxe D Control Current LED Status and Alarm Relay Operations Retry Mode Aquazone Deluxe D Control LED Indica- tors SERVICE Filters Water Coil Checking System Charge Refrigerant Charging Air Coil Fan Motor Removal TROUBLESHOOTING Thermistor a50-8163 Fig. 39 FP1 and FP2 Thermistor Location COAX Coaxial Heat Exchanger Airflow Refrigerant Liquid Line Flow Table 23 Troubleshooting Table 23 Troubleshooting (cont) Page Page Page Page HEATING CYCLE ANALYSIS COOLING CYCLE ANALYSIS *Use 500 for water, 485 for antifreeze. (kW)