Bryant DURAPAC PLUS SERIES 542J User Manual
Page 12
—
12
—
LEGEND
DCV — Demand Controlled Ventilation
IAQ
— Indoor Air Quality
LALS — Low Temperature Compressor
Lockout Switch
OAT — Outdoor-Air Temperature
POT — Potentiometer
Potentiometer Default Settings:
Power Exhaust
Middle
Minimum Pos.
Fully Closed
DCV Max.
Middle
DCV Set
Middle
Enthalpy
C Setting
NOTES:
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpy or dry bulb.
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT to the minimum
position.
Fig. 22 — EconoMi$erIV Wiring
Fig. 20 — EconoMi$erIV Component Locations —
End View
ECONOMI$ERIV
OUTDOOR AIR
TEMPERATURE SENSOR
(INSTALLED OPERATION
POSITION)
SCREWS
SCREWS
FRAME
TOP
LOW TEMPERATURE
COMPRESSOR
LOCKOUT SWITCH
Fig. 21 — EconoMi$erIV Component Locations —
Side View
ACTUATOR
ECONOMI$ERIV
FLANGE
AND SCREWS
(HIDDEN)
CONTROLLER
SUPPLY AIR
TEMPERATURE SENSOR
LOCATION
TR
1
24
Va
c
CO
M
TR
24
Va
c
HO
T
1
2
3
4
5
EF
EF
1
+
_
P1
T1
P
T
N
EX
H
2V
10
V
EX
H
Se
t
Se
t
2V
10
V
2V
10
V
DC
V
DC
V
Fr
ee
Co
ol
B
C
A
D
SO
+
SR
+
SR
SO
AQ
1
AQ
DC
V
Mi
n
Po
s
Op
en
Ma
x
N1