Cont a cts sho wn in high enthalpy, Or unpo wered st a te, Tr tr1 24 v a c – Carrier 48TFE008-014 User Manual
Page 14: Unit top, Oat (terminals are up) outside air screen, Enthalpy control hood
14
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
8
0
D
AMPER
D
AMPER
CLOSED
OPEN
OUTDOOR TEMP
.
°
F
REV.
97-36
72
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 UNPO
WERED ST
A
TE
1
2
3
TR
TR1
24
V
A
C
ENTHALPY
CONTR
OL
ENTHALPY
CONTROL
HOOD
Example:
Given —
Negative Pressure . . . . . . . . . . . . . . . . . . . . . . . . . 25 Pa (0.1 in. wg)
Outdoor Airflow . . .. . . . . . . . . . . . . . . . . . . . . . . . 520 L/s (1100 cfm)
Determine —
Setting = 150 mm (6 in.)
Fig. 23 — Durablade Economizer Damper Minimum
Position Setting
Fig. 24 — Durablade Economizer Minimum
Position Damper Setting
Fig. 25 — Outdoor-Air Thermostat/
Enthalpy Control Installation