Models With Ultra-Low Leak; Economizers - Trane Voyager Commercial Installation, Operation And Maintenance Manual
Packaged rooftop air conditioners with reliatel controls and estage 27.5 to 50 tons - 60 hz, 22.9 to 41.7 tons 81-148 kw - 50 hz
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Also See for Voyager Commercial:
- Installation & operation manual (152 pages) ,
- Manual (93 pages)
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S S t t a a r r t t u u p p
Table 59. 40 - 50 Ton downflow economizer (O/A)
damper static pressure setup
Return Air Duct Static + Return Air Damper
Static (Inches of Water)
Sys-
tem
0.2-
0.4-
0.6-
De-
0
0
sign
CFM
Drive Rod Position
12000
A
A
12500
A
A
13000
A
A
13500
A
A
14000
A
A
14500
A
A
15000
A
A
15500
A
A
16000
A
A
16500
A
A
17000
A
A
17500
A
A
18000
A
A
18500
A
A
19000
A
A
19500
A
A
20000
A
A
Table 60. 40 - 50 Ton horizontal economizer (O/A)
damper static pressure setup
Return Air Duct Static + Return Air Damper
Static (Inches of Water)
Sys-
tem
0.2-
0.4-
0.6-
De-
0
0
sign
CFM
Drive Rod Position
12000
A
B
12500
A
B
13000
A
A
13500
A
A
14000
A
A
14500
A
A
15000
A
A
15500
A
A
16000
A
A
16500
A
A
17000
A
A
17500
A
A
86
0.8-
1.0-
1.2-
0
0
0
0
C
D
E
E
C
D
D
E
B
C
D
E
B
C
D
D
B
C
C
D
B
B
C
D
A
B
C
D
A
B
C
D
A
B
C
C
A
B
B
C
A
B
B
C
A
A
B
C
A
A
B
C
A
A
B
B
A
A
B
B
A
A
B
B
A
A
A
B
0.8-
1.0-
1.2-
0
0
0
0
E
F
G
G
D
E
F
G
D
E
F
G
D
E
F
G
C
E
F
F
C
D
E
F
B
D
E
F
B
D
E
E
A
C
D
E
A
C
D
E
A
B
D
E
A
B
D
E
Table 60. 40 - 50 Ton horizontal economizer (O/A)
damper static pressure setup (continued)
Sys-
tem
1.4-
0.2-
De-
0
sign
CFM
E
18000
E
18500
E
19000
E
19500
E
20000
D
Models with Ultra-Low Leak
D
Economizers
D
The installer can adjust the stroke of the direct drive
D
actuator on the O/A damper to compensate for various
D
R/A duct losses.
illustrate the damper & actuator assembly and
C
61, p. 87
through
C
actuator limit positions based on the air flow (CFM) and
C
the return duct losses (static pressure) for Downflow
and Horizontal units. The actuator stroke limit can be
C
adjusted between 33% and 100% of full stroke. To
C
adjust the O/A damper for the correct pressure drop:
B
1. Measure the return duct static pressure.
B
2. Enter the calculated CFM from the previous section
"Verifying Proper Air Flow (CFM) - CV or VFD's," p.
75
to obtain the return air damper pressure drop.
3. Add the measured return duct static pressure and
the return air damper pressure drop together to
obtain the Total Return Static Pressure. Apply this
calculation and the calculated CFM to the
1.4-
appropriate table. See
0
64, p.
88.
4. To set the actuator stroke limit:
G
a. Loosen the screw that secures the angle of
rotation limiter on the actuator adjacent to the
G
damper drive shaft clamp.
G
b. Move the limiter to the desired % open position
G
and, making sure the limiter teeth are engaged,
G
retighten the screw. (See
5. After setting the end stop, the actuator needs to be
F
cycled through its auto-adapt feature to re-scale the
F
control range. With 24 VAC power applied to the
F
actuator, turn the control signal reversing switch
forward and back again two times. Within a few
F
seconds, the actuator will cycle itself to the new
F
limiter position and then back to zero. This process
may take up to 5 minutes. The actuator will then be
E
set to respond to the 2-10 VDC control signal to
E
cycle within the new range of rotation set by the
limiter. Verify that the control signal reversing
Return Air Duct Static + Return Air Damper
Static (Inches of Water)
0.4-
0.6-
0.8-
0
0
0
0
Drive Rod Position
A
A
A
B
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Figure 60, p. 87
and
Table 64, p. 88
list the various O/A
Table 61, p. 87
Figure 59, p.
1.0-
1.2-
1.4-
0
0
0
C
D
E
C
D
E
B
D
E
B
C
E
B
C
D
Figure 61, p. 87
Table
through
Table
87).
RT-SVX34R-EN
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