Honeywell R7284B Installation Instructions Manual page 5

R7284
T
5
T
3
2
1
4
ENVIRACOM™
BURNER
TERMINAL
MOTOR
IGNITOR
VALVE
CAD
CELL
LEGEND: SCREW TERMINAL
SOLDERLESS WIRE CONNECTOR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
REFER TO DEVICE LABEL FOR WIRE COLOR CODE.
3
VALVE IS OPTIONAL ON SPECIFIC MODELS.
4
ENVIRACOM™ TERMINAL 3 IS ALSO THE FIRST THERMOSTAT TERMINAL.
5
DO NOT CONNECT THE JUMPER ACROSS THE TT TERMINALS OR
CONFIGURE THE INTERNAL TT SETTING TO "YES" WHEN THE OIL
PRIMARY AND AQUASTAT ARE CONNECTED VIA THE ENVIRACOM BUS.
Fig. 9. Wiring R7284P,U with EnviraCOM™
connections, for typical oil-fired boiler.
IMPORTANT
When the R7284 Oil Primary is communicat-
ing to the L7224/L7248 Aquastat via the
EnviraCOM bus, do not jumper the TT termi-
nals or configure the internal TT setting to
"YES". Improper burner operation will result.
3
T T/3 2 1
AQUASTAT®
CONTROLLER
B2
B1
L7224/48
LIMIT
L1
L2
2
BURNER
MOTOR
2
IGNITOR
2
VALVE
3
CAD
CELL
JUNCTION
BOX
1/4 IN. QUICK CONNECT TERMINAL
R7284B,P,U,G ELECTRONIC OIL PRIMARY, ENVIRACOM™ ENABLED
2 1
TH9421C
VisionPRO IAQ
L1
L2
1
L2
1
L1
(HOT)
SYSTEM
TRANSFORMER
ENVIRACOM™
TERMINAL
M32183A
LEGEND:
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2 REFER TO DEVICE LABEL FOR WIRE COLOR CODE.
3 VALVE IS OPTIONAL ON SPECIFIC MODELS.
4
FACTORY INSTALLER JUMPERS.
5 ENVIRACOM™ TERMINAL 3 IS ALSO THE FIRST THERMOSTAT TERMINAL.
6 DO NOT CONNECT THE JUMPER ACROSS THE TT TERMINALS OR
CONFIGURE THE INTERNAL TT SETTING TO "YES" WHEN THE OIL
PRIMARY AND AQUASTAT ARE CONNECTED VIA THE ENVIRACOM BUS.
Fig. 10. Typical wiring diagram for EnviraCOM™
enabled thermostat and R7284P,U for an
IMPORTANT
System as shown in Fig. 10 is phase/polarity
sensitive. Make sure all input power is in the
same phase.
5
T8635L
C7089B
OUTDOOR
TEMPERATURE
OT OT
SENSOR
W8635A
1
2
3
C
R
R H
R C
4
R7284
T
LIMIT
6
T
3
L1
2
L2
1
2
BURNER
5
MOTOR
2
IGNITOR
2
VALVE
CAD
CAD
CELL
CELL
JUNCTION
BOX
SCREW TERMINAL
1/4 IN. QUICK CONNECT TERMINAL
SOLDERLESS WIRE CONNECTOR
oil-fired forced-air system.
2
1 3
FAN
G
RELAY
W1
W2
Y1 COOL 1
RELAY
Y2
COOL 2
RELAY
LIMIT
1
L1
HOT
L2
BURNER
MOTOR
IGNITOR
VALVE
3
M32184B
69-2467EFS—09