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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17
I. Step 1 - Complete Pre-Installation
Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
II. Step 2 - Select Location . . . . . . . . . . . . . . . . . . . . . 4
III. Step 3 - Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . 6
IV. Step 4 - Connect Refrigerant Piping . . . . . . . . . . . 7
V. Step 5 - Connect Condensate Drain Line . . . . . . . 8
VI. Step 6 - Make Electrical Connections . . . . . . . . . 10
VII. Step 7 - Install Thermostat . . . . . . . . . . . . . . . . . . 12
Indoor and Outdoor Units . . . . . . . . . . . . . . . . . . . . 15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18,19
I. After Extended Shutdown . . . . . . . . . . . . . . . . . . . . 18
II. Seasonal Changeovers . . . . . . . . . . . . . . . . . . . . . . 18
III. Adjusting Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
IV. Operating Mode Memory. . . . . . . . . . . . . . . . . . . . . 18
V. Automatic Operation (Auto.) Mode. . . . . . . . . . . . . 18
VI. Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . 18
CLEANING AND MAINTENANCE . . . . . . . . . . . . . . . . . . 19,20
I. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
II. Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
III. Clean Indoor Unit Bottom Panel. . . . . . . . . . . . . . . 20
IV. Clean Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
V. Clean Outdoor Coil (Outdoor Unit). . . . . . . . . . . . . 20
VI. Clean Condensate Drains . . . . . . . . . . . . . . . . . . . . 20
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
I. Before Calling for Service . . . . . . . . . . . . . . . . . . . . 20
FRESH AIR INSTALLATION OPTION . . . . . . . . . . . . . . . . . 20
I. Ventilation-Air Accessory . . . . . . . . . . . . . . . . . . . . 20
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,21
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . .CL1, CL-2
SAFETY CONSIDERATIONS
Installing and servicing air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance, such as
cleaning and replacing filters. All other operations should be
Installation, start-up and
service instructions
CEILING-SUSPENDED
FAN COIL UNITS
Cancels: II 619C-24-3
performed by trained service personnel. When working on
air-conditioning equipment, observe precautions in literature
Page
and on tags and labels attached to unit.
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly.
Consult local building codes and National Electrical Code
(NEC) for special installation requirements.
WARNING: Before installing or servicing system,
always turn off main power to system. There may be
more than one disconnect switch. Turn off accessory
heater power if applicable. Electrical shock can cause
personal injury.
Installation instructions for fan coil units (Fig. 1) are con-
tained in this manual. Refer to this manual for proper instal-
lation of the complete system. Note that the outdoor units are
shipped with installation and service instructions for basic
installation of the outdoor section. Be sure to make the con-
nections in Cooling Only Systems and Heat Pump Systems
sections on page 15 of this literature so that the unit will
operate properly.
Refer to Table 1 for proper system matches.
a40-267
Fig. 1 - Ceiling-Suspended Fan Coil Unit
619CNF
619CNQ
Sizes 024-060
II 619C-24-4
INSTALLATION
4/15/06
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Table of Contents
Troubleshooting
Related Manuals for Bryant 619CNF
Summary of Contents for Bryant 619CNF
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Page 1: Table Of Contents
Cooling Only Systems and Heat Pump Systems sections on page 15 of this literature so that the unit will operate properly. Refer to Table 1 for proper system matches. a40-267 Fig. 1 — Ceiling-Suspended Fan Coil Unit 619CNF 619CNQ Sizes 024-060 II 619C-24-4 4/15/06... - Page 2 For some applications, a fresh air intake, power vent fan, and/or condensate pump kit may be required. Refer to Tables 3A and 3B for physical data. Table 1 — System Matches INDOOR SECTION NUMBER 619CNF 024* 619CNQ 024* 619CNQ 024* Table 2 —...
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Page 3: Installation
Table 3A — Physical Data, Under Ceiling Cooling Only Units SYSTEM SIZE NOMINAL CAPACITY (tons) NOMINAL SIZE (Btuh) OPERATING WEIGHT (lb) MOISTURE REMOVAL WEIGHT (Pints/Hr) FINISH REFRIGERANT Control (Cooling) INDOOR FAN Rpm...Cfm High Rpm...Cfm Medium Rpm...Cfm Low High Speed Watts Motor Quantity Blowers —... -
Page 4: Step 2 - Select Location
Table 3B — Physical Data, Under Ceiling Heat Pump Units UNIT SIZE NOMINAL CAPACITY (tons) NOMINAL SIZE (Btuh) OPERATING WEIGHT (lb) MOISTURE REMOVAL WEIGHT (Pints/Hr) FINISH REFRIGERANT Control (Cooling) INDOOR FAN Rpm...Cfm High Rpm...Cfm Medium Rpm...Cfm Low High Speed Watts Motor Quantity Blowers —... - Page 5 b40-437 WEIGHT (lb) UNIT SIZE Cooling Only Heat Pump ft-in. ft-in. ft-in. 4- 2 1294 3-10 1169 4- 1 4-10 1493 4- 5 1368 4- 9 5-11 1817 5- 6 1692 5-10 7- 8 2336 7- 3 2211 7- 6 Fig.
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Page 6: Step 3 - Mount Unit
a40-929 5. Run refrigerant piping as directly as possible and avoid any unnecessary turns or bends. 6. Condensate piping can be directed through the inside wall to an approved drain or straight outside. NOTE: The piping hole for condensate line must slope at a minimum pitch of in. -
Page 7: Step 4 - Connect Refrigerant Piping
a40-620 Fig. 6 — Installing Hex-Head Mounting Bolts in Fan Coil Unit a40-930 DIMENSIONS (in.) UNIT SIZE Fig. 7 — Fan Coil Unit Hanging Dimensions a40-1464 DIMENSIONS (in.) UNIT SIZE *Exposed mounting holes. †Reverse bracket holes (concealed mounting). Fig. 8 — Mounting Included with Fan Coil Unit Fig. -
Page 8: Step 5 - Connect Condensate Drain Line
3. Insulate and caulk wall openings to reduce air infil- tration and refrigerant pipe vibrations on structure. 4. Evacuate piping, if necessary. If either refrigerant piping or the indoor coil is exposed to atmospheric conditions, it must be evacuated to 1000 microns to eliminate contamination and moisture in the system. - Page 9 a40-625 MOUNTING SLOT a40-933 Fig. 11 — Hanging Fan Coil Unit a40-940 *Factory-supplied. Fig. 12 — Routing Wires Over Piping Fig. 10 — Mounting Hanging Brackets a40-531 NOTE: Teflon Seal must face toward the outdoor heat pump unit. HEX-HEAD Fig. 13 — AccuRater Metering Device at Service Valve BOLT —9—...
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Page 10: Step 6 - Make Electrical Connections
VI. STEP 6 — MAKE ELECTRICAL CONNECTIONS Be sure field wiring complies with local building codes and NEC, and unit voltage is within limits shown in Table 5. Contact local power company for correction of improper line voltage. WARNING: To avoid personal injury or damage to unit, do not make electrical connections until all power sources are shut down, locked out, and tagged off. - Page 11 LEGEND φ — Phase NEC — National Electrical Code Piping Line Voltage 24 V Thermistor *Standard. †Accessory item. **Field supplied. ††Insulate for heat pump application. Fig. 14 — Component Location (Typical Ceiling-Suspended System) NOTES: 1. All piping must follow standard refrigerant piping techniques. 2.
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Page 12: Step 7 - Install Thermostat
VII. STEP 7 — INSTALL THERMOSTAT These systems use a 3-speed thermostat. The thermostat monitors the system operation and controls the operating mode. To change settings or refer to the thermostat Operat- ing Instructions. Mount thermostat to a wall in the occupied space using 2 field-supplied screws. - Page 13 a40-941 — Air Sweep Motor — Air Sweep Relay EQUIP GND — Equipment Ground — Fuse Link — Freeze Protection Thermostat — Heat Pump — Heater Relay — Heater — Heater Temp. Thermostat — Indoor-Fan Motor NOTES: 1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent. 2.
- Page 14 COOL AUTO HEAT a40-1385 a40-1384 SLIMLINE THERMOSTAT FLAT THERMOSTAT (FLATSTAT) HEAT PUMP COOLING ONLY COOLING ONLY HEAT & COOL HEAT & COOL (53DFS250-FS-BRY) (53DFS250-SL-BRY) a40-1386 COOL AUTO HEAT 5-1-1 PROGRAMMABLE THERMOSTAT COOLING ONLY HEAT & COOL (53DFST2-NP-BRY) Fig. 18 — Thermostats —14—...
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Page 15: Step 8 - Make Connections Between Indoor And Outdoor Units
VIII. STEP 8 — MAKE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNITS The thermostat is wired between the indoor and outdoor units to make the system complete. A. Check AccuRater Metering Device The correct AccuRater (bypass type) refrigerant control is required for system capacity optimization. An AccuRater device (see Fig. - Page 16 538A 619CNF,CNQ 619CNF,CNQ 538A a40-1636 Fig. 20 — Cooling System Wiring Diagram —16—...
- Page 17 538B 619CNQ 619CNQ 538B a40-1637 Fig. 21 — Heat Pump Wiring Diagram —17—...
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Page 18: Start-Up
START-UP WARNING: Never operate unit without a filter or with grille removed; damage to the unit or personal injury may result. Make the following checks and complete the Start-Up Check- list on page CL-1 before system start-up. Also refer to the condensing unit Installation, Start-Up and Service Instructions for system start-up instructions and refrigerant charging methods. -
Page 19: Cleaning And Maintenance
The DFB logic checks the 10-minute defrost timer and the DFT. If the DFT opens in less than 10 minutes, the DFB switches the unit back to normal heating operation. If the DFT remains closed, the DFB switches the unit back to heating operation after 10 minutes. -
Page 20: Clean Indoor Unit Bottom Panel
III. CLEAN INDOOR UNIT BOTTOM PANEL If the bottom panel of the unit becomes dirty or smudged, wipe the outside of the panel with a soft dry cloth. Use a mild liquid detergent and wipe off carefully with a dry cloth. IV. -
Page 21: Troubleshooting
PROBLEM System Does Not Start. Blown fuse or circuit breaker tripped at building power entry. Indoor and/or outdoor unit disconnect switch is off. Thermostat is set to night mode. Power failure. Unit is in off mode. Three-minute time delay is running. Temperature is above or below the selected temperature. - Page 22 Course descriptions and schedules are in our catalog. [ ] Packaged Service Training Copyright 2006 Bryant Heating & Cooling Systems SERVICE TRAINING • Maintenance • Operating Sequence...
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Page 23: Start-Up Checklist
I. PRELIMINARY INFORMATION OUTDOOR UNIT: MODEL NO. ___________________ INDOOR UNIT: MODEL NO. _____________________ ACCESSORIES: __________________________________________________________________________________ PISTONS: INDOOR SIZE: ____________ OUTDOOR SIZE: ____________ REFRIGERANT PIPING: EQUIVALENT LINE LENGTH: ____________ LIFT: FAN COIL ABOVE OUTDOOR UNIT? ____________ FAN COIL BELOW OUTDOOR UNIT? ____________ II. - Page 24 AND 40QAE024-060 UNITS. ALL SYSTEMS REQUIRE SINGLE-PHASE POWER) HAS GROUND WIRE BEEN CONNECTED? HAS THE CORRECT SIZE FUSE OR HACR BREAKER BEEN PRO- VIDED? ARE POWER WIRES TO Copyright 2006 Bryant Heating & Cooling Systems START-UP CHECKLIST (cont) UNIT SIZED START-UP CHECK-...