Reznor B5SM Option - Installation - Economizer - Manual (Page 6)

Modulating Ec
onomizer
560199
(B4,B5)SM 090/120 Series A
ir Handler
1.
Jumper be
tw
een W2 and E is r
e
quired.
2.
C & W2 t
o be con
nected t
o elec
tric heat
.
3.
Re
move BLACK
w
ire fr
om air han
dler low
volt
age ter
mi
nal board Y ter
mi
nal and con
nect t
o YEL
LOW wire from
economizer
.
4.
Sec
ond Stage re
frig
er
ant cool
ing w
ith op
tional econom
izer in
stalled.
A 2 stage t
her
mo
stat
is re
quired for
si
mul
ta
neous op
er
a
tion of t
he economizer
and re
frig
er
ant sys
tem.
Con
nect Y2 f
rom 2 st
age ther
mo
stat
to
BLUE w
ire fr
om economiz
er.
5.
Heat Pump E
conomizer
Re
lay. Re
quired for
proper op
er
a
tion of an ec
onomizer (
optional) in t
he heat pump
Heating mode.
Ref
er t
o econom
izer
insta
llation ins
truc
tion for pr
oper c
onnect
ion to ther
most
at.
Date: F
ebruary 4, 2011
Su per sedes: Draw
n by:
Unit #: 47-
374-01
Di a gram#:
4737402w
Ap proved
by:
HA
RNESS DETA
IL
E# = WIRE END DESI
GNA
TION
E2
STUD #6 18 Ga. Wire
E3
Fema
le ¼ Q
uick Disc.
E4
Male ¼ Q
uick Disc. I
nsul
E6
Wire Nut Size 73B
WIRE COLOR CODE
BLK
Black
BLU
Blue
BRN
Brow
n
GRN
Green
ORN
Orange
RED
Red
VIO
Violet
YE
L
Y
ellow
WHT
White
COMPONENT CODE
Economiz
er
C7400A
Fresh Air Enthalpy Sensor
C7150
Mixed Air Sensor
MS7510A
Damper Actuator 24v
W7212A
Logic Module
TB-11
Terminal Block
Re vi sion
Change
Date