Manuale d’uso / di manutenzione del prodotto 48MA/50ME016-040 del fabbricante Carrier
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Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERA TIONS ...................2 INST ALLA TION ............................. 2-34 General ......................................2 Unit Clearances ..............................2 Roof Curb .
SAFETY CONSIDERA TIONS Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical com- ponents. Only trained and qualified service personnel should install, repair , or service air -conditioning equipment.
CONDENSER SECTION AIRFLOW CONN — Connection NOTES: 1. Space required for service and airflow all around and above unit is 36 inches. 2. For additional information see Fig. 4. 3. Center of gravity is within 6 in. radius of geo- metric center of unit.
CONDENSER SECTION AIRFLOW CONN — Connection NOTES: 1. Space required for service and airflow all around and above unit is 36 inches. 2. For additional information see Fig. 5. 3. Center of gravity is within 6 in. radius of geo- metric center of unit.
Rigging Unit — Inspect unit for shipping damage, and file any damage claim immediately with transportation company . Lift unit with cables and spreader bars, using lifting brack- ets provided (Fig. 1 and 2). Lift one unit at a time, keep unit upright, and do not drop.
T able 1 — Physical Data UNIT 48MA/50ME 016 024 028 030 034 040 Zone Modules (Quantity) 8 8 10 10 12 12 Nominal Cooling Capacity (tons) 15 20 25 28 30 37 OPERA TING WEIGHT (lb) Base Unit 48MA 3395 3.
EV APORA TOR (ZONE MODULE) AIRFLOW CONN — Connection *Not used on 48MA016,024 (8 zone module units). NOTES: 1. For additional information, see T able 1 and Fig. 1. 2. Maximum allowable unit pitch is 1 ⁄ 2 in. per 10 ft in any direction. 3. Remove shipping brace before assembling curb section (location shown).
EV APORA TOR (ZONE MODULE) AIRFLOW CONN — Connection *Not used on 50ME016,024 (8 zone module units). NOTES: 1. For additional information, see T able 1 and Fig. 2. 2. Maximum allowable unit pitch is 1 ⁄ 2 in. per 10 ft in any direction. 3. Remove shipping brace before assembling curb section (location shown).
Condensate Drains — Pipe nipples covered with foam rubber insulation are shipped in unit return air filter section (6 nipples in units 48MA, 4 nipples in units 50ME). Install a nipple in each drain connection on both sides of unit. See Fig. 1 and 2 for drain locations.
Unit has factory-installed gas shutof f valves. Install gas shutof f valve external to unit if required by code (Fig. 8). After piping is complete, pressurize gas line and check for leaks with soap and water solution. Do not use an open flame when checking for gas leaks.
Use the following formula to determine the percent volt- age imbalance. % V oltage Imbalance: max voltage deviation from average voltage = 100 × average voltage EXAMPLE: Supply voltage is 460-3-60. AB = 452 v BC = 464 v AC = 455 v 452 + 464 + 455 A verage V oltage = 3 1371 = 3 = 457 Determine maximum deviation from average voltage.
T able 3 — Unit 50ME Electrical Data UNIT 50ME VOL T AGE (3 Ph, 60 Hz) VOL T AGE RANGE COMP NO. 1 COMP NO. 2 OFM FLA IFM POWER SUPPL Y Min Max RLA LRA RLA LRA No. 1 No. 2 No. 3 Hp FLA MCA MOCP 016 208/230 187 254 63.6 266 — — 6.2 6.6 —5 16.2 109.
T able 5 — Unit 50ME Electrical Application Data UNIT 50ME NOMINAL VOL T AGE kW (Unit T otal) MCA Cooling Heating Circuit Unit Common Feed Size IFM Hp 12 016 5 208/230 43/ 53 57/ 70 87/106 109.8/109.8 150.0/165.6 200.0/220.9 150.0/165.8 — — 150.
Field Control Wiring ZONE THERMOST A TS — Install a Carrier approved ac- cessory zone thermostat assembly in each zone according to installation instructions included in the accessory . Locate each thermostat assembly in the space where it will sense average zone temperature.
Fig. 10 — Zone Control Board Component Location (cont) 15.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw T erminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw Terminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw Terminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw Terminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
LEGEND C— Contactor CR — Control Relay GV — Gas V alve HA — Heat Anticipator HR — Heating Relay TC — Thermostat, Cooling TH — Thermostat, Heating TRAN — T ransformer Screw Terminal Quick-Connect T erminal Factory Control Wires Printed Circuit Field Wiring *One for each module.
ACCESSOR Y REMOTE CONTROL P ANEL — This central- station control can be set to override zone thermostat mode settings to lock out heating or cooling for the entire unit. The DA Y/NIGHT switch and damper position knob provide in- space, central control of damper position.
The heating thermostat energizes a 1 15-v solenoid by means of a gas valve relay and the pilot lights. The main burner comes on after the pilot is proven. The safety switches (airflow switches 1 and 2, pilot flame sensor , door switch, and limit switches) are in series with the gas valve.
3. T urn system switch to ON position. Set each zone ther- mostat at setting to call for heat. Pilot will ignite. NOTE: A time-delay relay will shut unit down in 180 sec- onds if main manual gas valve is not open. 4. Remove burner access panel. 5. Remove screw-cap cover on zone gas valve to expose pi- lot adjusting screw .
Fig. 33 — Spoiler Screw Location LEGEND COMPR — Compressor COND — Condensing *AFS1 deenergizes control circuit if loss of indoor air occurs. †Factory-supplied option.
When OA T is open, final stage heating element in all zone modules is inactive. When OA T is closed, final stage heating element in a zone module may be energized whenever second- stage thermostat f.
HEA TING (48MA) — On call for heating from a zone, the forced draft blower will start and the pilot will light. The zone burner will ignite after the pilot has been proven. (Ap- proximately 60 seconds.) NOTE: A time-delay relay will shut unit down in 180 sec- onds if the unit main gas valve is not open.
TO ADD OR REMOVE OIL 1. Close liquid line and hot gas bypass shutof f valves. See Fig. 31. 2. Pump down compressor and close suction and discharge service valves. Recover remaining refrigerant in compressor . 3. Add oil through oil filler plug. 4. T o remove oil, remove crankcase oil drain plug, and drain only as much oil as is required.
Condenser Fans Shut of f service switch to deenergize condenser-fan motors. ADJUSTMENT — Remove fan guard from top of unit. Re- move rubber hubcap from fan hub and loosen fan hub set- screws. Adjust fan height using a straight edge laid across fan deck venturi (Fig.
PULLEY REMOV AL 1. Shut of f unit power . 2. Loosen fan motor mounting plate and remove belt. 3. Loosen pulley setscrew . 4. Slide pulley of f shaft. Reverse steps 1-4 to install new pulley . PULLEY ALIGNMENT — Loosen fan pulley setscrews and slide fan pulley along fan shaft for parallel alignment.
LEGEND 1— Bearing Liner 2— Speed Nut ( 5 ⁄ 16 in.) 3— W asher 4— Rivet 5— Speed Nut ( 7 ⁄ 16 in.) 6— Speed Nut ( 1 ⁄ 4 in.) 7— Damper Lever 8— Linkage Bar 9— Linkage Rod (15 in.) 1 0— Linkage Rod (22 in.) Airflow Direction Fig.
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P ACKAGED SER VICE TRAINING Our packaged service training programs provide an excellent way to increase your knowledge of the equipment discussed in this manual. Product programs cover: • Unit Familiarization • Installation Overview • Maintenance • Operating Sequence A lar ge selection of product, theory , and skills programs is available.
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ST ART -UP CHECKLIST MODEL NO.: DA TE: SERIAL NO.: TECHNICIAN: PRE-ST ART -UP: M VERIFY THA T ALL P ACKING MA TERIALS HA VE BEEN REMOVED FROM UNIT M REMOVE ALL SHIPPING HOLDDOWN BOL TS AND BRACKETS PE.
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 48MA/50ME016-040 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 48MA/50ME016-040 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Carrier 48MA/50ME016-040 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Carrier 48MA/50ME016-040 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Carrier 48MA/50ME016-040, 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 48MA/50ME016-040.
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 48MA/50ME016-040. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Carrier 48MA/50ME016-040 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.
