Lifebreath 200ERV - Manual (Page 30)

30
Technical Bulletin
When using the ControlAir 15 relay contacts to initiate blower operation on a
furnace, certain thermostats will initiate the outdoor cooling condenser when
R and G are closed.
Use this wiring configuration to stop the ControlAir15 relay contacts from initializing
the condenser unit. This problem can occur at the thermostat because the
Y terminal
is connected to the G terminal internal to the stat. When R and G are closed at the fur-
nace (by dehumidistat or relay) 24 Volts is sent to G at thermostat. 24 Volts is then
sent through Y which will initiate outdoor condenser.
R G W Y C
R G W Y
Furnace
Thermostat
T9
T10
T11
T12
T13
T14
T5
T4
T3
GROUND
HIGH VOLTAGE
12V LOW VOLTAGE
FIELD INSTALLED
LEGEND
LOW VOLTAGE
P3
FAN O/P
NEUTRAL
THERMIST0R P4
P1
SEL1
SEL2
FOR R-2000
REMOVE SEL1
TO DISABLE
RECIRCULATION
REMOVE SEL2
DRY
CONTACT
T7
T8
T1
T2
T6
N/C
COMMON
N/O
T15
MICRO PROCESSOR BOARD
DEHUMIDISTAT
P2
P5
INTERNAL
WARNING
750 ma
MAX FUSE
2
1
P6
LINE
CHASSIS
CONTROLAIR 15
YEL
GRN
ORN
RED
BLK
TB-102-NE
0009