Bryant 559K 04-07 Series Service And Maintenance Instructions page 36

Horizontal Economizer Barometric Relief Flow
2500
2000
1500
1000
500
0
0 0.05 0.1
Return Duct Static Pressure (in. wg)
Horizontal Economizer Return Air Pressure Drop
6000
5000
4000
3000
2000
1000
0
0 0 .1 0 .2
Return Duct Static Pressure (in. wg)
EconoMi$er IV
Fig. 64 — Return Air Temperature or Enthalpy Sensor
Mounting Location
Horizontal Economizers
3-5 Ton
6 Ton
0.15 0.2 0.25 0.3
Horizontal Economizers
3-5 Ton
6 Ton
0 .3 0 .4
Fig. 63 — Outdoor-Air Damper Leakage
EconoMi$er IV
Controller
Grommet
Return Air
Sensor
Return Duct
(Field-Provided)
Vertical Economizer Barometric Relief Flow
2500
2000
1500
1000
500
0
0 0.05 0.1 0.15
Return Duct Static Pressure (in. wg)
Vertical Economizer Return Air Pressure Drop
6000
5000
4000
3000
2000
1000
0
0 0 .1 0 .2
Return Duct Static Pressure (in. wg)
EXH
N1
N
2V 10V
EXH
P1
P
Min
Pos
T1
Open
T
DCV
Max
2V 10V
AQ1
DCV
AQ
DCV
SO+
2V 10V
SO
Free
SR+
Cool
C
B
SR
D
A
Fig. 65 — EconoMi$er IV W7212 Control
36
Vertical Economizers
3-5 Ton
6 Ton
0.2 0.25 0.3
Vertical Economizers
3-5 Ton
6 Ton
0 .3 0 .4
TR
Set
24
24 Vac
Vac
HOT
+
1
3
Set
EF
TR1
COM
_
2
5
4
EF1