Manual 2100-553
Page
16 of 28
MIS-2980
EIFM ECONOMIZER
G
W2
2
E
TERMINAL BLOCK
A
W1
Y2
C
3
1
Y1
Y
R
WIRING HARNESS
UNIT 24V
F
IF
EQ
UI
PPED
YELLOW
AL
ARM
REL
A
Y
PI
NK
ORANGE
ECO
N
O
M
IZ
ER ST
AG
E 1
EL
ECT
R
IC
HEAT
ST
AG
E 1
ON UNITS WITH 15 OR MORE KW.
FACTORY INSTALLED JUMPER. REMOVE FOR 2-STAGE OPERATION
O
PEN O
R
SPECI
AL
USE AS REQ
U
IR
ED
PURPLE
BLUE
24V COM
M
O
N (GROUNDED)
FA
N (B
LOWE
R)
24V
HOT
CO
M
P
RESSO
R
EL
ECT
R
IC
HEAT
ST
AG
E 2
ECO
N
O
M
IZ
ER ST
AG
E 2
N.
C.
CONTACT
O
PEN O
R
SPECI
AL
USE AS REQ
U
IR
ED
BLACK
C
O
MMON
N.
O.
CONTACT
1
1
"J
" MOD
U
LE
REF
R
IG
ERANT
BLACK
VENT
IL
A
T
IO
N
IN
PUT
(I
F
EQ
UI
PPED)
FIGURE 9
BASIC A/C with OPTIONAL ELECTRIC HEAT
OLDER EIFM STYLE ECONOMIZER
