Broan Fresh Air System ERV90HCS - Manual (Page 20)

6. WIRING DIAGRAM
WARNING
Risk of electrical shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
!
Field wiring
remote control
(see notes 3 & 4)
120 V,
60 Hz
W1
J5 J7 J6 J4
ELECTRONIC
ASSEMBLY
1 2 3 1 2 1 2 1 2 3
1
2
3
4
1 2
1 2 3 4 5
J9
J11
J10
1
2
J12
J13
J14
10 9 8 7 6 5 4 3 2 1
B
24 V class
2
9.5 V class 2
120V, 60Hz
Neutral
120 V,
60Hz
Line
CPU
K2 K4 K5
J5-2
J10-1
J10-2
Line voltage factory wiring Class 2 low voltage factory wiring Class 2 low voltage field wiring
See note 1
120 V 90 V 68 V
neutral
Doo
r inter
loc
k
switch
(magnetically
a
ct
u
a
te
d
Exhaust fan
motor
1
2
3
4
5 1
2
1 2
J3
J2
J1
t˚
Damper motor
BK
Override switch
Furnace blower interlock
J14-1 : NO J14-2 : COM J14-3 : nc
(optional; see notes 3, 5)
DAMPER ELECTRONI
C ASSEMBLY
Defrost temperature
sensor
WIRING DIAGRAM
LOGIC DIAGRAM
Exhaust fan motor Supply fan motor
J5-1 J5-3 J7-2 J7-1 J4-1 J4-3 J6-2 J6-1
K1 K3
K2
24 V class
2
9.5 V class 2
120 V
90 V 68 V
neutral
J9-1 J9-2 J9-3
J4-2
J9-4
Exhaust fan motor
capacitor
Supply fan motor
capacitor
J8-1 J8-2 J8-4 J8-5
K4
J12-2 J12-1
A1
Damper motor
J3-2 J3-1
J2-2 J2-1
F1
J12-5 J12-4 J12-3
J2-3 J2-4 J2-5
Door interlock switch
J11-2 J11-1
K1 K3
K5
J14-3 J14-1 J14-2
Furnace blower interlock (optional; see notes 3, 5)
J14-4 J14-5 J14-6 J14-7 J14-8 J14-9 J14-10
Override switch (optional; see notes 3, 4) Field wiring remote c
o
n
tr
o
l (see
notes 3, 4)
ICP
BK
Y
R
G
W
W
BK
W BL R
G
BK
BL
BN
BN
BK BK BK BK BK
BL
Exhaust fan
motor
capacitor Supply fan
motor
capacitor Supply fan
motor
G
G
BN
BN
Y
Y BK
W
A2
A2
M3 T1
S1
R1
A1
F1
M1 C1 C2 M2
(optional; see notes 3 & 4)
VE0130A
NOTES
1.
For continued fire protection. Use specified UL listed/CSA Certified line fuse.
2. If any of the original wire, as supplied, must be replaced,
use the same equivalent wire.
3. Field wiring must comply with applicable codes,
ordinances and regulations.
4. Remote controls (class 2 circuit) available, see instruction manual.
COLOR CODE
BK BLACK BL
B
L
U
E
BN BROWN G GREEN R RED W
WHITE
Y YELLOW nc no
connection
5. Furnace fan circuit must be class 2 circuit only.
Critical characteristic.
reed switch)
FAN MOTORS SPEED SELECTION
SETTING
FAN SPEEDS
Factory shipped
Low - High
Low-Med select
Low- Med
JU1
1
2
3
JU1
1
2
3
1
2
3
4
5
J8
JU1
1
2
3
MED HI
K1
K2
3
2
1 HI MED
JU
1
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