Bryant 619C User Manual
installdt^n, start-up and
service instructions
UNDER CEILING FAN COIL UNITS
619C
Sizes 024-048
2 to 4 Tons
CONTENTS
Page
SAFETY CONSIDERATIONS
INSTALLATION
I. Complete Pre-Installation Checks ..............................2
II. Select Location
III. Mount Unit
IV. Connect Refrigerant Piping
V. Connect Condensate Drain Line
VI. Make Electrical Connections
VII. Install Control................................................................8
VIII. Connections to Outdoor Unit.......................................9
START-UP..............................................................................9-12
I. After Extended Shutdown
II. Seasonal Changeovers
III. Adjusting Airflow
IV. Operating Mode Memory............................................11
V. Automatic Operation (Auto.) Mode
VI. Operating Fault Diagnosis.........................................11
VII. Operation of Microprocessor Control
CLEANING AND MAINTENANCE.......................................12,13
SERVICE..................................................................................14
TROUBLESHOOTING
NOTE: Detailed controls, service, and troubleshooting
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14-17
1
1-9
3
3
3
5
8
9
9
11
11
11
information is in a separate manual, available from your
distributor.
Cancels: New
II 619C-24-1
7/1/92
INSTALLATION
The 619C under ceiling fan coil unit is installed with the 700C
outdoor condensing unit, or the 705C heat pump (Fig. 1). Re
fer to Table 1 to make sure the correct indoor unit is in
stalled with the correct outdoor unit.
Fig. 1 — 619C Under Ceiling Fan Coil Unit
Table 1 — System Combinations for Indoor
and Outdoor Units
SAFETY CONSIDERATIONS
Installing and servicing air conditioning equipment can be
hazardous due to system pressure and electrical compo
nents. 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
performed by trained service personnel. When working on air
conditioning equipment, observe precautions in literature, tags,
and labels attached to unit.
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for brazing operations. Have fire extin
guisher available. Read these instructions thoroughly. Con
sult local building codes and National Electrical Code (NEC)
for special installation requirements.
SPLIT
SYSTEM UNIT UNIT
Under Ceiling Cooling Only System
535BNC024 619CNX0240E0 700CNX024
535BNC036
535BNC048 619CNX0480E0
Under Ceiling Heat Pump System
635ANC024
635ANC036
635ANC048 619CNX0480W0 705CNX048000
INDOOR OUTDOOR
619CNX0360E0
619CNX0240W0
619CNX0360W0
700CNX036
700CNX048
705CNX024000
705CNX036000
Installation instructions for 619C fan coils are contained in
this manual. Refer to this manual for proper installation of
the complete system. Note that the 700C and 705C outdoor
units are shipped with installation and service instructions
for basic installation of the outdoor section.
Be sure the unit will be operated within the application guide
lines shown in Table 2. When installing the 700C or 705C
unit, it is important to note that for cooling operation when,,
the outside air temperature is below 55 F, it is necessary to
equip the outdoor unit with the low-ambient control
accessory.
■À
To install this system you will need:
1 — 619C fan coil
1 — 700C or 705C outdoor unit
1 — Remote controller kit (included with 619C fan coil) —
note that kit normally includes 15-ft long wire cable;
however, cable length up to 200 ft can be ordered.
1 — Low Ambient Kit (if required for your application)
1 — Check-Flo-Rater™ Metering Device Kit (included with
619C fan coil)
1 — Fresh-Air Intake Kit (if required for your application)
1 — Condensate Pump Kit (if required for your application)
NOTE: Refrigerant pipe, drain pipe, wire, etc., are also re
quired to install system.
Be sure you have the required parts before beginning instal
lation. The 619C unit utilizes a microprocessor control sys
tem to deliver optimal levels of comfort and efficiency. Be sure
to follow these instructions carefully to obtain proper func
tioning of the unit.
Table 2 - Application Range
COOLING
Maximum
Indoor
95 F DB
71 F WB
Maximum
Indoor
80 F DB
71 F WB
LEGEND
DB — Dry Bulb
WB - Wet Bulb
'Unit may be equipped with a iow-ambient control that will allow
operation down to ~20 F
I. COMPLETE PRE-INSTALLATION CHECKS
A. Unpack Unit
Outdoor Indoor
125 F DB
HEATING
Outdoor Indoor
75 F DB
65 F WB
57 F WB
Minimum
Outdoor
67 F DB
Minimum
55 F DB -20 F DB
55 F DB*
Outdoor
Store unit in the original packaging until it is moved to the
final site for installation. When removing unit from carton,
lift unit by its 4 corners; DO NOT lift unit by its plastic parts.
B. Inspecf^hipmeiit
Upon receipt of shipment check unit for damage. Forward claim
papers directly to the transportation company. Manufac
turer is not responsible for damage incurred in transit.
Check all items; if any item is missing notify your distribu
tor. To prevent loss or damage, leave all parts in original pack
ages until installation.
C. Before Installation
Perform the following steps before installing indoor unit
(Fig. 2). Place the unit upside down on the floor, then:
1. Remove side panels by sliding forward, then away from
sides of unit.
2. Remove air filters from inlet grilles; then remove and
retain screws securing inlet grilles to indoor unit.
3. Remove inlet grilles from indoor unit by sliding
forward.
LOOSEN eOLTS AND SLIDE-
MOUNTING BRACKET THIS
DIRECTION—TO REMOVE
2 T/8
tSSJ
DISCHARGE AIR
SLIDE SIDE PANEL THIS
OIRECTION—TO REMOVE
PIPING JOINT
(LIQUID SIDE)
PIPING JOINT
(VAPOR SIDE)
REMOVABLE AIR FILTER
NOTE: Dimensions shown in brackets [ ] are in mm
Fig. 2 — Removal of Mounting Brackets
from Indoor Unit
'-DRAIN CONNECTION
[INLET AIR
PIPING KNOCKOUT
(RIGHT SIDE)
UNIT 619C
OPERATING WT (lb)
REFRIGERANT
FAN
Rpm
High
Med
Low
Nominal Cfm (High Speed)
COIL
Rows
Face Area (sq ft)
FIns/in.
Number of Circuits
CONNECTIONS
Suction (in.) Flare
Liquid (in.) Flare
Condensate Drain (in.)
LINE SIZES
Suction (in.)
Liquid (in.)
Condensate Drain
Table 3 — Physical Data
NX0240E0 NX0360E0 NX0480E0 NX0240W0
108 117 140
R-22, Check-Flo-Rater Control
1035 1310 1345
990 1160 1307
940 1010 1270
635 935 1300
4 4 4
2.189 2.625 3 069
149 149 14.9
4
%
%
%
%
% % % 3/e
3/4
4
3/4
3/a
3/4
3/4
3/4 3/4
-2-
8 4
3/4 3/a
3/a 3/a
3/4
%
110 119 142
1035
990
940
635
4
2 189 2.625
14.9 14.9
3/4 3/4
Va 3/4
3/4
NX0360W0 NX0480W0
1310 1345
1160 1307
1010
935
4 4
4
3/4
Ve 3/a
3/a 3/a
3/4
1270
1300
3.069
14.9
8
3/4
3/4
%
3/4
II. SELECT LOCATION
Consult local building codes and NEC for special installation
requirements.
There are several ways the unit may be installed to different
types of ceiling construction. These instructions do not cover
all installation methods. As a typical installation, these in
structions focus primarily on mounting the unit to metal in
new construction. Plan your installation carefully before you
begin. Listed below are some guidelines that should be fol
lowed when determining location for the unit.
1. Place unit adjacent to an outside wall if fresh air is re
quired, ensuring that location allows for complete air
distribution.
2. Determine a convenient and accessible location to mount
the wired remote controller. Note that because the con
troller is not used to sense room conditions, it is not nec
essary to consider this factor when determining the
controller location.
The controller cable can be routed through walls and does
not need to be surface mounted. For additional informa
tion on remote controller, see separate controller kit in
stallation instructions.
3. Allow sufficient space for airflow clearance, wiring,
refrigerant piping, and servicing unit (Fig. 3).
4. Make sure the unit is easily accessible to electrical power.
5. Run refrigerant piping as directly as possible, avoiding
any unnecessary turns or bends.
6. Condensate piping can be directed through the inside
wall to an approved drain, or directed straight outside.
NOTE: The piping hole for condensate line must slope at a
minimum pitch of 1 in. per 10 ft to ensure proper drainage. If
proper pitch cannot be achieved, install accessory conden
sate pump at this time.
NOTE; The accessory condensate pump should be installed
before hanging the unit.
2. Determine installation position, paying particular at
tention to piping lengths and wiring connections, clear
ances, etc. See Fig. 3 for connection locations. Fig. 6 for
clearances, and Fig. 7 and 8 for bolt locations.
3. Open knockout if right-side piping connections are re
quired (Fig. 9).
4. Cut the slit portion in rear of the side panel with a saw
or cutter knife. (Fig. 9).
If indoor unit accessory louver guard is to be installed, in
stall at this time and refer to installation instructions pack
aged with this accessory.
5. Mount hanging brackets on ceiling (Fig. 10) for either
concealed or exposed bolt hanging position.
6. Lift the unit into place, and fit the hex-head bolts on
sides of indoor unit into slit grooves of mounting brack
ets (Fig. 11). Ensure unit is mounted level to assure proper
drainage.
7. Tighten bolts securely.
IV. CONNECT REFRIGERANT PIPING
Fan coil units may be connected to condensing units using
field-supplied refrigerant grade piping. Refer to Table 3 for
the correct size piping. The length of refrigerant pipe de
pends on the unit placement and building structure; keep in
mind to run pipes as directly as possible. For piping require
ments over 50 ft of total run, or more than 25 ft of lift, con
sult the long line application guidelines available from your
distributor.
III. MOUNT UNIT
Refer to Fig. 6 for clearances and dimensions. Use mounting
template included inside box to locate mounting bolt holes,
piping holes, electrical connections, and accessory outdoorair intake, if used.
Select proper type of hardware from the guidelines below. See
Fig. 4.
Wooden Structure
Install hanging bolts on a square wooden piece placed over
beams.
Newly Built Concrete Slab
Install hanging bolts with inserts, embedded bolts, etc.
Metal Structure
Install hanging bolts utilizing an existing angle or by install
ing a new support angle.
Previously Built Concrete Slab
Install hanging bolts with expansion anchor.
A. To Mount Unit:
1. Remove mounting bracket and reinstall the 2 hex-head
bolts (factory supplied) into each side of indoor unit as
shown in Fig. 5. Allow approximately 3/8-in. space be
tween bolt head and unit.
Use the following instructions to connect piping.
1. Install insulation. Insulate all refrigerant lines on heat
pumps to prevent condensation. It is extremely impor
tant that all refrigerant lines and the Check-FloRater"' metering device be insulated on heat pumps. On
cooling only units, the liquid line may be left uninsu
lated. Use any acceptable heat resistant closed-cell foam
insulation (minimum 3/8-in. wall thickness). When in
sulating piping, cap ends and slide insulation over the
piping. Insulation can also be cut and placed over
piping.
2. Run liquid and gas refrigerant piping.
a. Run pipes as directly as possible, avoiding any un
necessary turns and bends.
b. Suspend refrigerant pipes so that the insulation is
not damaged and vibrations are not transmitted to
the structure.
c. Leave slack in the refrigerant pipe between the struc
ture and the unit to absorb vibrations.
d. Install flare connection on tubing to liquid line at fan
coil (Fig. 12). The correct piston size is shipped in ths
Check-Flo-Rater body with 619C units. If you have
any questions, use Table 4 to determine required pis
ton size for the system being installed. The arrow on
the metering device body must face away from the
indoor coil.
-3-
f8J
9 15/16
f253J I
6 9/16
[167J
-2 II/J6
f69J
UNIT 619C
024
036
048
UNIT 619C
024
036
048
NOTESI
I. OÍMENS/ONS IN [ J ARE MÍLL/METERS.
DIRECT/ON OF AIR FLOW.
DIMENSIONS (in.)
571/2
70/4
E
B
53% evs
665/s
F G
—
—
201/4 371/2
A
5015/16 46
58'3/, 6
713/16
495/8
C
6V8 7%
7%
7%
6%
201/16
2315/16
FRONT VIEW
LOOSEN BOLTS AND SLIDE
MOUNTING BRACKET TH/S
D1RECT10N-»TO REMOVE
SIDE PANEL
D
DISCHARGE AIR
SLIDE SIDE PANEL THIS
DIRECT lON^o-TO REMOVE
PIPING JOINT
(LIQUID SIDE)
PIPING JOINT
REMOVABLE AIR FILTER
Fig. 3 — 619C Dimensional Drawing
-4-
(VAPOR SIDE)
DRAIN CONNECTION
INLET AIR
SIDE VIEW
PIPING KNOCKOUT
(RIGHT SIDE)
(SLIDE INSERT)
HANGING I BRACE
BOLT
I WOODEN
WOODEN STRUCTURE
^HANGER BOLT
IL à
METAL STRUCTURE PREVIOUSLY
Fig. 5 - instaliing Hex-Head Mounting Boits
REAM (EDGE SHARP
“ INSERT)
NEWLY BUILT CONCRETE SLAB
Fig. 4 - 619C Unit-Mounting Methods
(Hardware is Fieid Suppiied)
INDOOR UNIT
in 619C Unit
(EMBEDDED BOLT
OF PIPING)
BUILT CONCRETE SLAB
REINFORCING
BAR«
"‘embedded
BOLT
^EXPANSION
ANCHOR
BOLT
e. On heat pump installations check for factory-installed
piston in service valve. If not already installed, in
stall piston in the metering device located in the ser
vice valve on the outdoor unit (Fig. 13). Make sure
Teflon seal on the piston faces toward the outdoor unit.
Use Table 4 to determine required piston size for the
system being installed.
f Refer to 700C and 705C installation, start-up and ser
vice instructions for additional information.
g. Install a liquid line filter drier near the outdoor unit.
On heat pump systems, a bi-flow filter drier must be
used.
3. Insulate and caulk wall openings to reduce air infiltra
tion and refrigerant pipe vibrations on structure.
4. Evacuate piping, if necessary. If either refrigerant pip
ing or the indoor coil is exposed to atmospheric condi
tions for longer than 5 minutes, it must be evacuated to
1000 microns to eliminate contamination and moisture
in the system.
V. CONNECT CONDENSATE DRAIN LINE
Observe all local sanitary codes when installing condensate
drains. Refer to Fig. 3 and 14 for drain hose connection from
indoor unit.
1. Use hard polyvinyl chloride (PVC) pipe material with
nominal ID of 3/4 in. to connect at drain line. Use pipe
insulation 1/4-in. thick, such as Armaflex insulation, on
exposed piping inside the conditioned space.
FRONT VIEW
-5-
CONCEALED MOUNTING
HOLE FOR HANGING BOLT
4 -1/2" X 1" SLOTS
EXPOSED MOUNTING
HOLE FOR HANGING BOLT
4 -1/2” X 1" SLOTS
SIDE VIEW OF RIGHTSIDE PANEL
ri-|='C io
T
3 5/8"
IV" !
21
_____1______
i
1-
--------------
UNIT 619C
024
036
048
Fig. 7 — 619C Unit Hanging Dimensions
TOP
11 IN
REAR
NOTE: Dimensions are found in Fig. 7.
Fig. 8 — Mounting Template Included with 619C Unit
B
A
IQ
________
>1
DIMENSIONS (in.)
A
50'5/i6 46
58'3/i6 53%
718/16 66%
B CONCEALED MOUNT -
------
D EXPOSED MOUNT -
23 5/8”
oo
T
IT
r -................................1
1
1
---------------D-----------------
h
---------------A----------------
B C
D
6'/8
6'/8
7% 70V4
49Vb
57V2
POSITION OF
HANGING
BOLT
(3/8 IN DIA.
HOLE)
. FOLD
TEMPLATE
ON DOTTED
LINE
:«i' 1 u-fi
1
-
Fio. 9 — Removina Rear Knockout
If Right-Side Piping Connection is Used
1
rtrr 1
iliC - -------------
CUTTHESUT
PORTION IN REAR
OF PANEL WITH
A SAW OR CUTTER
KNIFE
2. To ensure regular flow of condensate water, the drain
pipe should be pitched toward an open drain or sump at
a downward slope of at least 1/4-in. per foot.
3. Secure drain pipe with nylon wire tie passing through
the knockout, as shown in Fig. 15.
4. Attach plate with screws under piping hole.
5. Attach drain pipe with nylon wire tie passing through
hole (Fig. 15).
NOTE: Do not fasten nylon wire ties tight enough to deform
the insulation, as this affects its performance.
6. Insulate condensate drain line(s). Insulate the conden
sate drain lines that are located in or above an occupied
area with a condensate proof material such as polyure
thane or neoprene.
7. Install an external trap at the end of the condensate line.
NOTE: Should your particular installation require one, a con
densate pump may be ordered as an accessory option.
Fig. 10 — Mounting Ceiling Brackets
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