Table of Contents
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IMPORTANT - READ BEFORE INSTALLING
1. Read and become familiar with these installation
instructions before installing this unit (see Fig. 1 for typi-
cal multi-split system components).
2. Be sure the installation conforms to all applicable local
and national codes.
3. These instructions contain important information for the
proper maintenance and repair of this equipment. Re-
tain these instructions for future use.
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
I. System Description . . . . . . . . . . . . . . . . . . . . . . . . . 2
II. Planning the System . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
I. Complete Pre-Installation Checks . . . . . . . . . . . . . 2
II. Install Outdoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . 4
III. Install Fan Coil Units . . . . . . . . . . . . . . . . . . . . . . . . 4
IV. Complete Refrigerant Piping . . . . . . . . . . . . . . . . . . 7
V. Make Electrical Connections . . . . . . . . . . . . . . . . . 8
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13,14
I. Leak Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
II. Evacuate and Dehydrate . . . . . . . . . . . . . . . . . . . . 13
III. Charge System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IV. Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . 13
V. Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . 13
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-17
I. Outdoor Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
II. Scroll Compressors . . . . . . . . . . . . . . . . . . . . . . . . 15
III. High-Pressure Relief Valve . . . . . . . . . . . . . . . . . . 15
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
V. High-Pressure Switch . . . . . . . . . . . . . . . . . . . . . . 15
VI. Low-Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . 15
VII. Service Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
VIII. Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . 16
IX. Compressor Lockout Switch (CLO) . . . . . . . . . . . 16
(OCH TH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
XI. Low-Ambient Control Thermistor (LAT) . . . . . . . 17
XII. Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . 17
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
I. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
II. Cleaning Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 17,18
I. Checking Cooling Control Operation . . . . . . . . . . 17
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . CL-1 to CL-4
installation, start-up and
service instructions
MULTI-SPLIT, DUCT-FREE
OUTDOOR COOLING UNITS
Page
Cancels: New
538S (048 Shown)
619C
619B
619F
Fig. 1 - Multi-Split System Components
538S
Sizes 024,048
2 and 4 Tons
II 538S-24-1
2/15/96
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Table of Contents
Related Manuals for Bryant 619B
Summary of Contents for Bryant 619B
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Page 1: Table Of Contents
VII. Service Valves ......15 619B VIII. Refrigerant Charging ..... . . 16 IX. -
Page 2: Safety Considerations
• A wired or wireless infrared remote controller to control SAFETY CONSIDERATIONS each fan coil unit independently (one remote controller is Installing and servicing air-conditioning equipment can be haz- necessary for each fan coil unit) ardous due to system pressure and electrical components. Only trained and qualified service personnel should install or serv- NOTE: The remote controller is not available for 619F in- ice air-conditioning equipment. - Page 3 711 x 1270 2-2 x 4-2 660 x 1270 2. Dimensions in [ ] are in millimeters. 3. Center of gravity 4. Thermistors are used with 619B and 619C fan coils only. Fig. 2 — Base Unit Dimensional Drawing —3—...
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Page 4: Install Outdoor Unit
NOTE: Dimensions in [ ] are in mm. (A) Minimum operating clearance required when this side faces a wall. (B) Minimum operating clearance required when this side faces away from a wall. Fig. 3 — Operating and Service Clearance Unit may be mounted on a level pad directly on base legs or III. - Page 5 —5—...
- Page 6 LEGEND *See Connect Control Circuit Wiring section on page 9 for control connection details. NEC — National Electrical Code NOTE: Maximum system lift is 30 ft between lowest system compo- nent and highest system component (see Fig. 7). Fig. 6 — Typical Piped System* —6—...
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Page 7: Complete Refrigerant Piping
If either refrigerant tubing or indoor coil is opened to atmo- IV. COMPLETE REFRIGERANT PIPING spheric conditions for longer than 5 minutes, it must be evacu- NOTE: Complete all refrigerant tubing connections at the fan ated to 1000 microns to eliminate contamination and mois- coil units first. -
Page 8: Make Electrical Connections
*The maximum system elevation is 30 ft from lowest point in the system to highest point in the system. Fig. 7 — Maximum Elevation Differential A. Make Piping Sweat Connections CAUTION: When brazing tubing sets to the service Check tubing set identification against Multi-Split Installa- valves, a brazing shield MUST be used to prevent dam- tion Planning Worksheet on page CL-1 to ensure correct se- age to the painted unit surface. - Page 9 2. Route 24-v control wiring through wiring hole on the out- CAUTION: Unit failure as a result of operation on door unit. See Fig. 9 for typical connections for each type improper line voltage or excessive phase imbalance con- of fan coil. See. Fig. 10 and 11 for 538S component ar- stitutes abuse and may cause damage to electrical com- rangement and unit wiring details.
- Page 10 LEGEND — Fan Coil Unit OCT TH — Outdoor Coil Temperature Thermistor — Terminal Block Fig. 9 — Control Line Connections (Typical Connections for Each Type of Fan Coil Illustrated) —10—...
- Page 11 Fig. 10 — Component Arrangement, 538S _ 024 Fig. 11 — Component Arrangement, 538S _ 048 LEGEND FOR FIG. 10 AND 11 — Contactor, Compressor — High-Pressure Switch — Transducer Terminal Block — Capacitor — Connector TRAN — Transformer — Compressor Lock Out —...
- Page 12 LEGEND — Compressor — Fan Coil J, P — Connectors LED — Light-Emitting Diode — Switch Fig. 12 — Outdoor Unit Microprocessor Control Board —12—...
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Page 13: Start-Up
The indoor fan cycles WARNING: Service valves must be fully backseated off. The 619B and 619C fan coil units then begin room sam- to close service port. There is no Schrader valve at the... - Page 14 Increased Demand for Cooling full speed whenever compressor operation is permitted. When only one fan coil on a circuit is calling for cooling, fan cycling NOTE: There are 2 separate compressor circuits in the is permitted at all ambients. Fan motor will be cycled on and 538S _ 048 units (circuit A and circuit B).
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Page 15: Service
SERVICE III. HIGH-PRESSURE RELIEF VALVE Valve is located in compressor. Relief valve opens at a pres- WARNING: Before performing recommended main- sure differential of approximately 450 50 psig between suc- tenance, be sure unit main power switch is turned off, tion (low side) and discharge (high side) to allow pressure and be sure all disconnects for indoor fan coil units are equalization. -
Page 16: Refrigerant Charging
VIII. REFRIGERANT CHARGING Table 5 — Required Liquid Line Temperatures PRESSURE REQUIRED SUBCOOLING TEMPERATURE (F) WARNING: To prevent personal injury, wear safety (Psig) AT glasses and gloves when handling refrigerant. Do SERVICE FITTING not overcharge system — this can cause compressor flooding. -
Page 17: Outdoor-Coil Temperature Thermistor
flashes), wait 2 minutes for time delay to clear. on the setting of control jumper J1. See Operating Sequence 2. At a fan coil unit remote controller, (619B or 619C units) section on page 13 for more information about the controls. - Page 18 —18—...
- Page 20 Copyright 1996 Carrier Corporation CATALOG NO. BDP-3353-801...