Carrier aquazone 50RTG- Manuals

7 Step 7 — Electrical Wiring All field installed wiring, including the electrical ground, MUST comply with the National Electrical Code (NEC) aswell as applicable local codes. In addition, all field wiring mustconform to the Class II temperature limitations described in theNEC. Refer to unit wiring ...

8 SEE NOTE 5 SEE NOTE 6 NOTE 4 SEE Not Used R Status RV AL2 AL1 Relay Alarm A C JW1 LED Control Logic Microprocessor C G DC CO EH2 EH1 CO 24V P3 FP2 FP1 BRG Test Pins C P1 R O G W Y Y BR Not Used Dip Switch PM Compressor Off On 1 2 Relay FP2 FP1 HP LOC P2 CC CCG 1 2 4 3 6 5 8 7 10 9 12 VIO VIO FP2 B...

9 Table 3 — 50RTG Electrical Data LEGEND NOTE: Contact factory for oversize blower motor electrical data. Table 4 — 50RTG03 Blower Performance LEGEND NOTES: 1. Fan BHP includes drive losses.2. Region “A” is standard drive package.3. Regions “B” and “C” require optional drive packages.4. For applicat...

12 Table 9 — 50RTG10 Blower Performance LEGEND NOTES: 1. Fan BHP includes drive losses.2. Region “A” is standard drive package.3. Regions “B” and “C” require optional drive packages.4. Region “D” represents oversized motor and special sheaves.5. For applications requiring higher static pressures, co...

14 Step 8 — Low Voltage Wiring THERMOSTAT CONNECTIONS — The thermostat shouldbe wired directly to the Aquazone™ control board. SeeFig. 4 and 5. WATER FREEZE PROTECTION — The Aquazone controlallows the field selection of source fluid freeze protectionpoints through jumpers. The factory setting of jum...

16 Boilerless Changeover Temperature — Switch 8 on S1 pro-vides selection of boilerless changeover temperature set point.Select OFF for set point of 50 F or select ON for set pointof 40 F. If switch 8 is set for 50 F, then the compressor will be used for heating as long as the FP1 is above 50 F. The...

17 NOTE: Three factors determine the operating limits of a unit:(1) entering air temperature, (2) water temperature and (3)ambient temperature. Whenever any of these factors are at aminimum or maximum level, the other two factors must be at anormal level to ensure proper unit operation. See Table 15...

18 6. Open the return valve to send a pressure surge through the loop to purge any air pockets in the piping system. 7. A noticeable drop in fluid level will be seen in the flush cart tank. This is the only indication of air in the loop. NOTE: If air is purged from the system while using a 10 in.PVC...

20 Table 19 — C Control Current LED Status and Alarm Relay Operations LEGEND NOTES:1. Slow flash is 1 flash ever y 2 seconds.2. Fast flash is 2 flashes ever y 1 second.3. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by a 10-second pause. This sequence will repeat continually ...

22 Checking System Charge — Units are shipped with full operating charge. If recharging is necessary: 1. Insert thermometer bulb in insulating rubber sleeve on liquid line near filter drier. Use a digital thermometer forall temperature measurements. DO NOT use a mercuryor dial-type thermometer. 2. C...

23 SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE FP2 FP1 LIQUIDLINE WATER IN WATER OUT CONDENSATE OVERFLOW (CO) AIR COILFREEZEPROTECTION WATERCOILPROTECTION THERMISTOR ° F ° F AIR COIL LEGEND Fig. 11 — FP1 and FP2 Thermistor Location COAX — Coaxial Heat ExchangerAirflowRefrigerant Liquid Line Fl...

24 Table 22 — Troubleshooting LEGEND RV — Reversing Valve FAULT HEATING COOLING POSSIBLE CAUSE SOLUTION Main Power Problems X X Green Status LED Off Check line voltage circuit breaker and disconnect. Check for line voltage between L1 and L2 on the contactor. Check for 24 VAC between R and C on contr...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 535-004 Printed in U.S.A. Form 50R-2SI Pg CL-2 8-02 Replaces: New Book 1 4 Tab 5a 5a Copyright 2002 Carrier Cor poration - - - - - - -...