Bryant DURAPAC PLUS SERIES 542J, Installation, Start-Up And Service Instructions Manual

Page: 15 / 40

— 15 —
Fig. 26 — Enthalpy Changeover Settings
CONTROL
CURVE
A
B
C
D
CONTROL POINT
APPROX. °F (°C)
AT 50% RH
73 (23)
70 (21)
67 (19)
63 (17)
12
14
16
18
20
2
2
24
26
28
30
32
34
36
38
40
42
44
46
90
10
0
80
70
60
50
40
30
20
10
ENT
HA
LP
Y—
BTU
P
ER
PO
UN
D DR
Y A
IR
85
(29)
90
(32)
95
(35)
100
(38)
105
(41)
110
(43)
35
(2)
35
(2)
40
(4)
40
(4)
105
(41)
110
(43)
45
(7)
45
(7)
50
(10)
50
(10)
55
(13)
55
(13)
60
(16)
60
(16)
65
(18)
65
(18)
70
(21)
70
(21)
75
(24)
75
(24)
80
(27)
80
(27)
85
(29)
90
(32)
95
(35)
100
(38)
APPROXIMATE DRY BULB TEMPERATURE— °F (°C)
A
A
B
B
C
C
D
D
REL
AT
IVE HU
M
IDIT
Y
(%
)
HIGH LIMIT
CURVE
TR1
24 Vac
COM
TR
24
Vac
HOT
1 2
3 4
5
EF EF1
+
_
P1
T1
P
T
N
EXH
2V 10V
EXH
Set
Set
2V 10V
2V 10V
DCV
DCV
Free
Cool
B C
A
D
SO+
SR+
SR
SO
AQ1
AQ
DCV
Min
Pos
Open
Max
N1
Fig. 27 — EconoMi$erIV Controller
0
1000
2000
3000
4000
5000
6000
2 3 4 5 6 7 8
800 ppm
900 ppm
1000 ppm
1100 ppm
RANGE CONFIGURA
TION (ppm)
DAMPER VOLTAGE FOR MAX VENTILATION RATE
CO SENSOR MAX RANGE SETTING
2
Fig. 28 — CO
2
Sensor Maximum Range Setting