Trane Voyager Commercial - Page 95

RT-SVX34C-EN 95
Startup
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
appropriate
Tab le 46, p. 95 through Ta b le 49, p. 96.
4. Set the drive rod swivel to the appropriate hole according to Ta b le 46, p. 95 through Tab le 49,
p. 96. The units are shipped using hole "A" with no reference to any specific operating
condition.
Table 46. 27.5 - 35 Ton Downflow Units, Economizer (O/A) Damper Static Pressure Setup
System
Design
Return Air Duct Static +
Return Air Damper Static
(Inches of Water)
CFM 0.20 0.40 0.60 0.80 1.00 1.20 1.40
Drive Rod Position
8000 B EEEEEE
8500 B D EEEEE
9500 A C EEEEE
10000 A C D EEEE
10500 A C D EEEE
11000 A B D D E E E
11500 A B C D E E E
12000 A A C D E E E
12500 A A C D D E E
13000 A A B B C D E
Table 47. 27.5 - 35 Ton Horizontal Unit Economizer (O/A) Damper Static Pressure Setup
System
Design
Return Air Duct Static +
Return Air Damper Static
(Inches of Water)
CFM 0.200.400.600.801.001.201.40
Drive Rod Position
8000 A F GGGGG
8500 A F GGGGG
9000 A E GGGGG
9500 A E F GGGG
10000 A D E GGGG
11000 A D E F G G G
11500 A B E F G G G
12000 A A D F G G G
12500 A A D E F G G
13000 A A D E F G G
13500 A A C E F F G
14000 A A C D E F G
14500 A A B D E F F