31
factory--shipped with 3 speed wires connected and 2 speed wires
available. The fan speed wires are color--coded as follows:
Table 11 – Color Coding for Indoor Fan Motor Leads
Black = High Speed
Orange = Med---High Speed
Red = Med Speed
Pink = Med---Low Speed
Blue = Low Speed
Selection of Proper Fan Speeds for Operation
Modes:
NOTE
: All models are factory--shipped for nominal high stage
and low stage cooling airflow operation at minimum external static
pressure. Many models are factory--shipped for nominal high stage
and/or low stage gas heating airflow at minimum external static
pressure. Tables 14 (208/230 VAC models) and 15 (460 VAC
models) provide airflow data for higher external static pressures.
Low Stage Gas Heating (208/230 VAC models):
Table 13 and 14
show the suitability of each speed for a given external static
pressure for low stage gas heating. Any speed/static combination
that is outside the rise range is marked “NA” and must not be used.
For single phase units only, ”High” blower speed is for high static,
high stage cooling only and must not be used for low stage gas
heating speed. The unit must operate within the low stage gas heat
rise range printed on the rating plate. Connect the chosen fan speed
wire to “LO HEAT” connection on the IGC Board (see Fig. 20).
High Stage Gas Heating (208/230 VAC models):
Table 13 and
14 show the suitability of each speed for a given external static
pressure for high stage gas heating. Any speed/static combination
that is outside the rise range is marked “NA” and must not be used.
For single phase units only, ”High” blower speed is for high static,
high stage cooling only and must not be used for high stage gas
heating speed. The unit must operate within the high stage gas heat
rise range printed on the rating plate. Connect the chosen fan speed
wire to “HI HEAT” connection on the IGC Board (see Fig. 20).
Gas Heating (460 VAC models):
Table 15 shows the suitability of
each speed for a given external static pressure for gas heating
operation. Any speed/static combination that is outside the rise
range is marked “NA” and must not be used. The unit must operate
within the gas heat rise range printed on the rating plate. Connect
the chosen fan speed wire to “GAS HEAT” connection on the
Interface Fan Board (IFB, See Fig. 21).
Low Stage Cooling (All models):
Using Tables 16, 17, and 18,
and the nominal airflow for low stage cooling (Table 1) find the
external static pressure drops for wet coil, economizer, and filter,
and add them to dry coil measured on the system. Using this total
static pressure, use Table 13 or 14 (208/230 VAC models) and
Table 15 (460 VAC models) to find the airflows available at the
total static pressure. For 208/230 VAC models, connect the chosen
fan speed wire to “LO COOL” connection on the IGC Board (see
Fig. 20). For 460 Vac models, connect the chosen fan speed wire to
“LOW” connection on the IFB (see Fig. 21).
High Stage Cooling (All models)
Using Tables 16, 17, and 18,
find the external static pressure drops for wet coil, economizer, and
filter, and add them to dry coil measured on the system. Using this
total static pressure, use Table 13 or 14 (208/230 VAC models) and
Table 15 (460 VAC models) to find the airflows available at the
total static pressure. The speed chosen must provide airflow of
between 350 to 450 CFM per ton of cooling. For 208/230 VAC
models, connect the chosen fan speed wire to “HI COOL”
connection on the IGC Board (See Fig. 20). For 460 VAC models,
connect the chosen fan speed wire to “HIGH” connection on the
IFB (see Fig. 21).
High Stage Enhanced Dehumidification Cooling (208/230 VAC
Models):
Using the total static pressure for selecting the high stage
cooling speed, use Table 13 or 14 to find lower speed/airflows
available at that total static pressure. All airflows highlighted in
Table 13 and 14 are acceptable for Dehum speed. The speed
chosen must provide airflow of between 320 to 400 CFM per ton
of cooling. For 208/230 VAC models, connect the chosen fan
speed wire to “DHUM” connection on the IGC Board (see Fig.
20).
To activate the high stage enhanced dehumidification cooling
mode, the shunt jumper in Fig. 20 must be moved from the No DH
to DH selection (See Fig. 20, close up).
Continuous Fan (All models):
Continuous fan speed is the same
speed as Low Stage Cooling.
Cooling Sequence of Operation
a. Continuous Fan
(1.) Thermostat closes circuit R to G energizing the
blower motor for continuous fan. The indoor fan is
energized on low speed.
b. Cooling Mode
(1.) Low Stage: Thermostat closes R to G, R to Y1.
The compressor and indoor fan are energized on
low speed. The outdoor fan is also energized.
(2.) High Stage: Thermostat closes R to G, R to Y1, R
to Y2. The compressor and indoor fan are ener-
gized on high speed. The outdoor fan is also ener-
gized.
DH
DH
DH
DH
Shunt in no
dehumidification
position
Shunt in
dehumidification
position
L2
L1
L2 HIGH LOW
CCH
P2
GND
MODEL
CEPL131094-01-R
T1
C9
CEBD431094-02-RA
HSCI
SST
-A
SOL
P3
ANSI Z21.20 A
U
TO
M
ATIC
IGNITION SY
STEM
24V
AC 50/60hZ 350M
a M
AX.
K3
K4
T2
K5
C11
Q7
Q6
D13
D12
D14
JW6
D19
D28 D20
R67 D18
R66
D17
R68
R69
D16
D15
K7
D11
D7
JW4
R57
C7
Q2
D26
Q3
R55
R54
D6
R56
R13
C8
Q1
K11 D24
R60
R59
FS
HI
DHUM
CO
O
L
LO CO
O
L
LO HEA
T
HEA
T
HI HEA
T
Pb
e
1
R58
R61
C6
R53
K12
R14
R15
D25
R72
R73
Z1
C5
K9
D22
R2
U2
D10
R65
Q4
Q5
K6
C10
D27
R63
R62
R64
D8
JW3
C4
R44
K2
D9
R43
R45
R33
R30
R39
R42
R36
R21
R27
R18
R24
R32
R38
R41
R35
R20
R17
R26
R29
R22
R22
K10
1
R71
JW1
MO
TO
R
CO
M
D23
D21
U3
U1
AMP
3
K8
J1
F1
P4
24V
AC
24V
AC
C
O
M
JW11
BLOWER
OFF DELAY
D3
D1
D2
D4
C1
MOV1
AN1
C2
C3
D5
JW9
R1
R46
R49
180
90
120
150
JW7
R10
R34
R4
R19
R6
R52
JW5
R25
R70
R51
R47
R48
R5
Y2 Y1 G W1W2 C R DH
DH
DH
JW8
JW10
R31
R28
R16
R37
R40
R12
R11
R3
R7
R9
J2
P1
C
ONT
CO
M
HUM
K1
JW2
A13017
Fig. 20 -- Interface Fan Board (IFB) 208/230 VAC Models
577E
Содержание 577E-A
Страница 5: ...5 A190127 Fig 3 577E Unit Dimensions 577E ...
Страница 6: ...6 A190128 Fig 4 577E 36 60 Unit Dimensions 577E ...
Страница 7: ...7 A150039 Fig 5 577E B36 60 Unit Dimensions 577E ...
Страница 21: ...21 A14593 Fig 16 208 230 1 60 Connection Wiring Diagram 577E ...
Страница 22: ...22 A14594 Fig 17 Cont 208 230 1 60 Ladder Wiring Diagram 577E ...
Страница 23: ...23 A14615 Fig 17 208 230 3 60 Connection Wiring Diagram Gas Inputs 40 60 90 KBtu hr 577E ...
Страница 24: ...24 A14616 Fig 18 Cont 208 230 3 60 Ladder Wiring Diagram Gas Inputs 40 60 90 KBtu hr 577E ...
Страница 25: ...25 A14618 Fig 18 208 230 3 60 Connection Wiring Diagram Gas Inputs 115 130 577E ...
Страница 26: ...26 A14617 Fig 19 Cont 208 230 3 60 Ladder Wiring Diagram Gas Inputs 115 130 577E ...
Страница 27: ...27 A13026 Fig 19 460 3 60 Connection Wiring Diagram 577E ...
Страница 28: ...28 A13027 Fig 20 Cont 460 3 60 Ladder Wiring Diagram 577E ...