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TRUEZONE ARD, EARD, AND ZD SERIES DAMPERS
33-00040—01
6
Fig. 6. EARD with W8835 EnviraZone panel.
1 2 3
1 2 3
1 2 3
L
C
RH
RC
W1/E
W2
W3/AUX
Y1
Y2
G
O/B
HUM
HUM
DEHUM
DEHUM
VENT
VENT
R
C
T1
T2
ZONE1
M6 M4 M1
ZONE2
M6 M4 M1
ZONE3
M6 M4 M1
1 2 3
1 2 3
1 2 3
1 2 3
DAMPERS
ENVIRACOM BUS
DAMPER
XFRM
ENVIRACOM
XFRM
REMOVE JUMPERS IF
T1 AND T2 ARE USED
HEAT
COOL
ZONE 1
COM
EM HEAT
FAN
PURGE
ZONE 3
ZONE 2
W8835A
DIP SWITCH SETTINGS
1 SEE TABLE
ON
OFF
2 SEE TABLE
1
0
3 ENVIRACOM FURN NO
YES
4 PURGE TIME
2 MIN
3.5 MIN
5 PURGE FAN
HVAC
PANEL
6 PURGE DAMPER
NO CHG
OPEN
7 # COMP STAGES
1
2
8 HEAT FAN
HVAC
PANEL
9 HP CHANGEOVER
O
B
10 UNUSED
O
N
1 2 3 4 5 6 7 8 9 10
#1 #2 CONV HT STG
1 1 1
1 0 2
0 1 3
0 0 HP
24 VOLT/40 VA
TRANSFORMER
R
C
L1
L2
R
W1
W2
Y1
Y2
G
C
DOTTED LINES FOR 2-
STAGE APPLICATIONS
SINGLE TRANSFORMER
HEATING/COOLING SYSTEMS
REQUIRE A JUMPER TO BE
INSTALLED CONNECTING RH
AND RC (FACTORY INSTALLED).
1 2 3
EARD-6
M23578
POWER-CLOSED/
SPRING-OPEN
ZD DAMPER
POWER-CLOSED/
SPRING-OPEN
ZD DAMPER
POWER-CLOSED/
SPRING-OPEN
ARD DAMPER
VISIONPRO IAQ
C7835A DISCHARGE
AIR SENSOR
VISIONPRO IAQ
VISIONPRO IAQ