Bryant 548D - Manual (Page 14)

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4
3
2
1
0
5
6
7
8
9
UNIT
TOP
OAT
(TERMINALS ARE UP)
OUTSIDE AIR
SCREEN
MINIMUM POSITION
OPEN
3 1
T P
P1 T1 4 2 5
S S
O
D
C TR
B
RE
V . B
1 9 8 8 1 8 A
% H U M I D I T Y 90 70 60 30 10 D
C
B
A
60
65
70
75
55
50
85
80
D AMPER
D AMPER CLOSED
OPEN OUTDOOR TEMP
.
°
F
REV. 97-367 2
CW
– SETPOINTS
– CCW
CONT
A
CTS SHO
WN IN HIGH ENTHALPY
R U S H
A
T 2
4
V A C
3 m
A M
IN.
A
T 1
1 VDC
CONT
A
CT RA
TINGS:
1.5A
R
UN,
3.5A
IN
OR U
NPO
WERED ST
A
TE
1
2
3
TR
TR1
2 4V A
C
ENTHALPY
CONTR
OL
ENTHALPY
CONTROL
HOOD
Example:
Given —
Negative Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 in. wg
Outdoor Airflow . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 1100 cfm
Determine —
Setting = 6
Fig. 17 — Durablade Economizer Damper
Minimum Position Setting
Fig. 18 — Durablade Economizer Minimum
Position Damper Setting
Fig. 19 — Outdoor-Air Thermostat/
Enthalpy Control Installation
Fig. 20 — Wiring Connections for
Outdoor-Air Thermostat