Оценок - 2, средний балл: 4
(
)
)
|
Фрагмент инструкции
For low-voltage units (up to 600 v), obtain insulation material from machine shipping package consisting of 3 rolls of insulation putty and one roll of vinyl tape. 1. Insulate each terminal by wrapping with one layer of insulation putty. 2. Overwrap putty with 4 layers of vinyl tape. High Voltage Units—High-voltage units require special terminal preparation. Follow local electrical codes for highvoltage installation.Vinyl tape is not acceptable; a high voltage terminal method must be used. Connect Power Wires to Oil Pump Starter — See Fig. 30. Connect power wires to oil pump starter mounted in machine power panel. Use separate fused disconnect or circuit breaker as shown on job wiring diagrams and Fig. 30. Check that power supply voltage agrees with oil pump voltage. Follow correct phasing for proper motor rotation. Do not punch holes or drill into the top surface of the power panel. Knockouts are provided in the bottom of the power panel for wiring connections. Piping Control Wiring Power Wiring LEGEND 1 — Disconnect 2 — Free-Standing Compressor Motor Starter 3 — Compressor Motor Terminal Box 4 — Chiller Power Panel 5 — Control Cabinet 6 — Vents 7 — Pressure Gages 8 — Chilled Water Pump 9 — Condenser Water Pump 10 — Chilled Water Pump Starter 11 — Condensing Water Pump Starter 12 — Cooling Tower Fan Starter 13 — Disconnect 14 — Oil Pump Disconnect (see Note 4) IMPORTANT: Wiring and piping shown are for general pointof- connection only and are not intended to show details for a specific installation. Certified field wiring and dimensional diagrams are available on request. NOTES: 1. All wiring must comply with applicable codes. 2. Refer to Carrier System Design Manual for details regarding piping techniques. 3. Wiring not shown for optional devices such as: • remote start-stop • remote alarm • optional safety device • 4 to 20 mA resets • optional remote sensors 4. Oil pump disconnect may be located within the enclosure of Item 2 — Free-Standing Compressor Motor Starter. Fig. 27 — 19XR with Free-Standing Starter 31 IMPORTANT: Wiring shown is typical and not intended to show detail for a specific installation. Refer to certified field wiring diagrams. AWG N.C. N.O. PR RLA ST TB NOTES: I. GENERAL 1.0 Starters shall be designed and manufactured in accordance with Carrier Engineering Requirement Z-375. 1.1 All field-supplied conductors, devices, field-installation wiring, and termination of conductors and devices must be in compliance with all applicable codes and job specifications. 1.2 The routing of field-installed conduit and conductors and the location of field-installed devices must not interfere with equipment access or the reading, adjusting, or servicing of any component. 1.3 Equipment, installation, and all starting and control devices must comply with details in equipment submittal drawings and literature. 1.4 Contacts and switches are shown in the position they would assume with the circuit deenergized and the chiller shut down. 1.5 WARNING — Do not use aluminum conductors. 1.6 Installer is responsible for any damage caused by improper wiring between starter and machine. II. POWER WIRING TO STARTER 2.0 Power conductor rating must meet minimum unit nameplate voltage and compressor motor RLA. When (3) conductors are used: Minimum ampacity per conductor = 1.25 x compressor RLA When (6) conductors are used: Minimum ampacity per conductor = 0.721 x compressor RLA 2.1 Lug adapters may be required if installation conditions dictate that conductors be sized beyond the minimum ampacity required. Contact starter supplier for lug information. 2.2 Compressor motor and controls must be grounded by using equipment grounding lugs provided inside starter enclosure. III. CONTROL WIRING 3.0 Field supplied control conductors to be at least 18 AWG or larger. 3.1 Chilled water and condenser water flow switch contacts, optional remote start device contacts, and optional spare safety device contacts must have 24 vdc rating. Max current is 60 mA; nominal current is 10 mA. Switches with gold plated bifurcated contacts are recommended. 3.2 Remove jumper wire between 12A and 12B before connecting auxiliary safeties between these terminals. 3.3 Pilot relays can control cooler and condenser pump and tower fan motor contactor coil loads rated 10 amps at 115 vac up to 3 amps at 600 vac. Control wiring required for Carrier to start pumps and tower LEGEND — American Wire Gage — Normally Closed — Normally Open — Pilot Relay — Rated Load Amps — Shunt Trip — Terminal Block Required Power Wiring Required Control Wiring Options Wiring fan motors must be provided to assure machine protection. If primary pump and tower fan motor are controlled by other means, also provide a parallel means for control by Carrier. Do not use starter control transformer as the power source for pilot relay loads. 3.4 Do not route control wiring carrying 30 v or less within a conduit which has wires carrying 50 v or higher or alongside wires carrying 50 v or hi...