Trane CGWH 115 - Page 13

13CGWH-SVX01D-E4
Installation
Table 11 - Control output relays (CCUH)
Output relay
Quantity of fans
Fan 1 Fan 2 Fan 3 Fan 4 Fan 5 Fan 6
Low Speed High Speed Single speed Fan option
2
1 2 3&4 Two fan speed first fan
1 3&4 Single speed only fans
3
1 2 3 4 Two fan speed first fan
1 3 4 Single speed only fans
4
1 2 3 4 4 Two fan speed first fan
1 3 4 4 Single speed only fans
5
1 2 3 3 4 4 Two fan speed first fan
1 3 3 4 4 Single speed only fans
6
1 2 3 3 4 4 4 Two fan speed first fan
1 3 3 4 4 4 Single speed only fans
Table 12 - Fan staging - Example :4 fans per circuit, single speed (CCUH)
Standard - 4 fans per circuit
Relays Energized
Stage Number of Fans 1 2 3 4 Capacity [%]
0 0 0 0 0 0 0
1 1 1 0 0 0 25
2 2 1 0 1 0 50
3 3 0 0 1 1 75
4 4 1 0 1 1 100
Table 13 - Fan staging - Example :4 fans per circuit with first fan 2-speed (CCUH)
Low Ambient 2-Speed, 4 fans per circuit
Relays Energized
Stage Number of Fans 1 2 3 4
Capacity [%]
0 0 0 0 0 0 0.00
1 0.5 1 0 0 0 12.50
2 1 0 0 1 0 25.00
3 1.5 1 0 1 0 37.50
4 2 0 0 0 1 50.00
5 2.5 1 0 0 1 62.50
6 3 0 0 1 1 75.00
7 3.5 1 0 1 1 87.50
8 4 0 1 1 1 100.00