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Unit Startup
Table 43. Standard unit (no ERW) (economizer) outside
air damper travel adjustment/pressure drop
(inches w.c.)
Economizer
Linkage Set-up
1
Jackshaft rod
end location
1
Damper lever
configuration
A
Damper lever
rod end location
1
120-162 Ton w/Economizer (includes mist eliminator)
CFM
Pressure Drop (inches w.c.)
58500
0.80
54000
0.68
45500
0.48
42000
0.41
38000
0.34
34000
0.27
30000
0.21
90-118 Ton w/Economizer (includes mist eliminator)
CFM
Pressure Drop (inches w.c.)
47250
0.81
40500
0.60
36750
0.49
31500
0.36
28000
0.28
25000
0.22
23000
0.19
Jackshaft rod
end location
1
Damper lever
rod end location
1
Jackshaft rod
end location
1
120-162 Ton w/TRAQ™ Damper (includes mist
eliminator)
CFM
Pressure Drop (inches w.c.)
58500
1.10
54000
0.93
45500
0.64
42000
0.54
38000
0.44
34000
0.35
30000
0.27
90-118 Ton w/TRAQ™ Damper (includes mist
eliminator)
CFM
Pressure Drop (inches w.c.)
47250
1.37
40500
0.99
36750
0.80
31500
0.58
28000
0.46
25000
0.37
23000
0.31
146
Damper Position
2
3
4
5
1
2
2
2
B
B
B
B
2
3
4
5
1.64
2.96
-
-
1.40
2.52
-
-
0.99
1.79
2.22
2.62
0.85
1.53
1.89
2.23
0.69
1.25
1.55
1.83
0.56
1.00
1.24
1.46
0.43
0.78
0.97
1.14
1.88
-
-
-
1.39
2.62
-
-
1.14
2.16
2.71
-
0.84
1.59
1.99
2.36
0.66
1.25
1.57
1.87
0.53
1.00
1.25
1.49
0.45
0.85
1.06
1.26
Damper Position
1
1
2
1
2
3
5
4
1
1
2
1
1.52
2.16
2.73
1.28
1.83
2.33
0.89
1.28
1.64
2.14
0.75
1.09
1.40
1.83
0.60
0.88
1.14
1.50
0.47
0.69
0.90
1.20
0.35
0.53
0.69
0.93
1.89
2.72
1.35
1.97
2.54
1.09
1.60
2.08
2.74
0.77
1.15
1.51
2.01
0.59
0.89
1.17
1.58
0.45
0.69
0.92
1.24
0.37
0.57
0.76
1.04
Standard Unit with Energy Recovery
Wheel
Economizer Damper Adjustment - ERW units
Outside & Return Air Damper Operation
6
The outside air and return air damper actuators are
accessible through from the filter section of the unit.The
2
outside air and return air dampers have individual
actuators that are linked electronically.The actuators are
B
preset to 0 degrees from the factory. Refer to
p. 148
for the appropriate actuator position for the unit and
6
operating airflow (CFM).
To Adjust Damper Travel
-
1. Drill a 1/4" hole through the unit casing up stream of
-
the return air dampers and below the energy recovery
-
wheel. Use a location that will produce an accurate
2.69
reading with the least amount of turbulence. Several
2.20
locations may be necessary, and average the reading.
1.76
1.37
Hazardous Voltage!
-
Disconnect all electric power, including remote
-
disconnects before servicing. Follow proper lockout/
-
tagout procedures to ensure the power can not be
2.87
inadvertently energized. Failure to disconnect power
2.27
before servicing could result in death or serious injury.
1.81
1.53
HIGH VOLTAGE IS PRESENT AT TERMINAL BLOCK OR
UNIT DISCONNECT SWITCH.
2. Close the disconnect switch or circuit protector switch
that provides the supply power to the unit terminal
block or the unit mounted disconnect switch.
3. Turn the 115 volt control circuit switch and the 24 volt
control circuit switch to the "On" position.
4. Open the Human Interface access door, located in the
unit control panel, and press the SERVICE MODE key to
display the first service screen. Refer to the latest
edition of the applicable programming manual for
applications for the SERVICETEST screens and
programming instructions.
5. UseTable 29, p. 77 to program the following system
components for operation by scrolling through the
displays:
Supply Fan (On)
VFD Cmd (100%, if applicable)
RTM Occ/Unocc Output
(Unoccupied)
OA Damper Pos (0%)
Outside Air Bypass Damper Pos (0%)
Exhaust Air Bypass Damper Pos (0%)
Table 44,
WARNING
RT-SVX24J-EN
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