Manuale d’uso / di manutenzione del prodotto 50LJQ008 del fabbricante Carrier
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Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERA TIONS .................. 1 INST ALLA TION ............................ 1-16 Step 1 — Provide Unit Support .............. 1 • ROOF CURB • SLAB MOUNT Step 2 — Field Fabricate Ductwork .
ROOF CURB ACCESSOR Y ‘ ‘A ’ ’ UNIT SIZE 50DJ901371 1 8 -2 9 50LJQ008,012 [356] 50DJ901381 2 8 -0 9 [610] UNIT SIZE ‘ ‘F’ ’ POWER ‘ ‘G’ ’ CONTROL CONNECTOR PKG. ACC. 50LJQ008,012 1 9 [25] NPT or 2 9 [51] NPT 3 ⁄ 4 9 [19] NPT 50DJ90131 1 NOTES: 1.
Step 3 — Make Field Connection for Conden- sate Disposal — Units must have an external trap added. See Fig. 3. A 3 ⁄ 4 -in. FPT connection is located on the side of the unit. Use a trap at least 100 mm (4 in.) deep, and protect against freeze-up.
T able 1A — Physical Data (SI) BASE UNIT 50LJQ 008 012 NOMINAL CAP ACITY (kW) 23.2 28.8 OPERA TING WEIGHT (kg) Unit 381 426 With Economizer 401 446 Roof Curb 101 101 COMPRESSOR Hermetic Quantity 22 Oil (ml) (each compressor) 1627 2071 REFRIGERANT TYPE R-22 Operating Charge (kg) Circuit 1 3.
T able 1B — Physical Data (English) BASE UNIT 50QJ 008 012 NOMINAL CAP ACITY (tons) 6.6 8.2 OPERA TING WEIGHT (lb) Unit 840 940 With Economizer 884 984 Roof Curb 223 223 COMPRESSOR Hermetic Quantity.
UNIT 50LJQ STD. UNIT WEIGHT ECONOMIZER WEIGHT CORNER WEIGHT ‘ ‘A ’ ’ CORNER WEIGHT ‘ ‘B’ ’ CORNER WEIGHT ‘ ‘C’ ’ CORNER WEIGHT ‘ ‘D’ ’ ‘ ‘H’ ’ ‘‘J’ ’ ‘ ‘K’ ’ Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Ft-in.
Step 5 — Make Electrical Connections Unit cabinet must have uninterrupted, unbroken elec- trical ground to minimize the possibility of personal injury if an electrical fault should occur.
Fig. 8 — Electric Heater Power Wiring Connections — 50LJQ, 400-3-50; Single Point Kit 50DJ902041 and 50DJ902101 Fig. 9 — Electric Heater Power Wiring Connections — 50LJQ, 400-3-50; Single Poin.
Fig. 10 — Electric Heater Power Wiring Connections — 50LJQ, 220-3-50; Single Point Kit 50DJ902031 and 50DJ902081 Fig. 1 1 — Electric Heater Wiring Connections — 50LJQ, 220-3-50; Single Point Kit 50DJ902051 and 50DJ9021 1 1 LEGEND FOR FIG.
Fig. 12 — Electric Heater Power Wiring Connections — 50LJQ, 220-3-50; Single Point Kit 50DJ902091 Fig. 13 — Electric Heater Power Wiring Connections — 50LJQ, 220-3-50; Single Point Kit 50DJ902131 LEGEND FOR FIG.
T able 2 — Electrical Data UNIT 50LJQ NOMINAL V -PH-HZ VOL T AGE RANGE COMPR (each) OFM IFM ELECTRIC HEA T POWER SUPPL Y ELECTRIC HEA T POWER WIRING FIG. NO. ELECTRIC HEA T P ART NO. 50DJ901— Min Max RLA LRA FLA Hp FLA Nominal kW* FLA MCA MOCP† 008 220-3-50 198 242 15.
FIELD CONTROL WIRING — Install a Carrier-approved accessory thermostat assembly according to installation in- structions included with the accessory . Locate thermostat as- sembly on a solid wall in the conditioned space to sense av- erage temperature in accordance with thermostat installation instructions.
Step 6 — Adjust Indoor-Fan Speed — Adjust in- door fan speed to meet jobsite conditions. For units with electric resistance heating, required mini- mum L/s (cfm) is 1062 (2250) for 50LJQ008 and 1416 (3000) or 50LJQ012, with the following exceptions.
MOTOR MOUNTING NUTS AND BOLTS Fig. 18 — Belt-Drive Motor Mounting T able 5A — Fan R/s at Motor Pulley Settings (SI) 50LJQ MOTOR PULLEY TURNS OPEN 0 1 ⁄ 2 11 1 ⁄ 2 22 1 ⁄ 2 33 1 ⁄ 2 44 1 ⁄ 2 5 008 14.70 14.26 13.82 13.38 12.94 12.50 12.06 1 1.
T able 6 — Fan Performance (SI), 50LJQ008 (50 Hz) — Horizontal Discharge Units AIRFLOW (L/s) EXTERNAL ST A TIC PRESSURE (Pa) 50 100 150 200 250 300 350 400 450 500 r/s BkW r/s BkW r/s BkW r/s BkW r/s BkW r/s BkW r/s BkW r/s BkW r/s BkW r/s BkW 1 100 7.
T able 10 — Fan Performance (English), 50LJQ008 (50 Hz) — Horizontal Discharge Units AIRFLOW (Cfm) EXTERNAL ST A TIC PRESSURE (in. wg) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 2200 459 0.
ST ART -UP IMPOR T ANT : Ener gize crankcase heaters 24 hours prior to base unit start-up to remove entrapped refrigerant from the oil. Heaters are energized as long as there is power to the unit. Unit Preparation — Make sure that unit has been in- stalled in accordance with these installation instructions and applicable codes.
NOTES: 1. In heating mode, economizer damper blade will move to the mini- mum position, and unit will operate as described for units without economizer , regardless of outdoor air temperature. 2. The temperatures given in the graph are for demonstration pur- poses only and may vary depending on which thermostat is used.
position of the reversing valves and shuts of f the outdoor fan. The electric heaters (if installed) will be ener gized. On units with economizer , the economizer damper blade will move to the fully closed position.
CONDENSA TE DRAIN — Check and clean each year at start of cooling season. In winter , keep drain dry or protect against freeze-up. FIL TERS — Clean or replace at start of each heating and cooling season, or more often if operating conditions require it.
Fig. 25 — Cooling Charging Charts, 50LJQ008 Fig. 26 — Cooling Charging Charts, 50LJQ012 21.
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Copyright 1992 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Carrier 50LJQ008 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Carrier 50LJQ008 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Carrier 50LJQ008 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Carrier 50LJQ008 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Carrier 50LJQ008, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Carrier 50LJQ008.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Carrier 50LJQ008. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Carrier 50LJQ008 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
