Trane Voyager Commercial - Page 65

RT-SVX34R-EN
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Table 39. Condenser fan/compressor sequence - high efficiency
27.5-35 Ton High Efficiency
Compressor Stage 1 Compressor Stage 2
Fan #1 Fan #2 Fan #3
Ambient
Range (F)
# Cond
Fans On
Fan #1 Fan #2 Fan #3
Ambient
Range (F)
# Cond
Fans On
ON
OFF OFF 0-70 1
ON
OFF OFF 0-58 1
OFF OFF 70-75 1 or 2 OFF OFF 58-63 1 OR 2
ON OFF 75-80 2 ON OFF 63-70 2
ON OFF 80-85 2 or 3 ON OFF 70-75 2 OR 3
ON ON 85-115 3 ON ON 75-115 3
27.5-35 Ton High Efficiency
Compressor Stages 3 or 4 Compressor Stage 5
Fan #1 Fan #2 Fan #3
Ambient
Range (F)
# Cond
Fans On
Fan #1 Fan #2 Fan #3
Ambient
Range (F)
# Cond
Fans On
ON
OFF OFF 0-60 1
ON
OFF OFF 0-50 1
OFF OFF 60-65 1 OR 2 OFF OFF 50-55 1 OR 2
ON OFF 65-70 2 ON OFF 55-60 2
ON OFF 70-75 2 OR 3 ON OFF 60-65 2 OR 3
ON ON 75-115 3 ON ON 65-115 3
40 Ton High Eff. and Std Eff. CV
Compressor Stages 1 & 2 Compressor Stages 3 & 4
Fan #1 Fan #2 Fan #3 & 4
Ambient
Range (F)
# Cond
Fans On
Fan #1 Fan #2 Fan #3 & 4
Ambient
Range (F)
# Cond
Fans On
ON
OFF OFF 0-60 1
ON
OFF OFF 0-40 1
OFF OFF 60-70 1 or 2 OFF OFF 40-45 1 OR 2
ON OFF 70-80 2 ON OFF 45-75 2
ON OFF 80-85 2 or 4 ON OFF 75-80 2 OR 4
ON ON 85-115 4 ON ON 80-115 4
40 Ton High Eff. and Std Eff. CV 50 Ton High Eff. and Std Eff. CV
Compressor Stage 5 Compressor Stages 1 & 2
Fan #1 Fan #2 Fan #3 & 4
Ambient
Range (F)
# Cond
Fans On
Fan #1 Fan #2 Fan #3 & 4
Ambient
Range (F)
# Cond
Fans On
ON
OFF OFF 0-40 1
ON
OFF OFF 0-60 1
OFF OFF 40-45 1 OR 2 OFF OFF 60-65 1 or 2
ON OFF 45-65 2 ON OFF 65-75 2
ON OFF 65-70 2 OR 4 ON OFF 75-80 2 or 4
ON ON 70-115 4 ON ON 80-115 4
50 Ton High Eff. and Std Eff. CV
Compressor Stages 3 & 4 Compressor Stage 5
Fan #1 Fan #2 Fan #3 & 4
Ambient
Range (F)
# Cond
Fans On
Fan #1 Fan #2 Fan #3 & 4
Ambient
Range (F)
# Cond
Fans On
ON
OFF OFF 0-35 1
ON
OFF OFF 0-35 1
OFF OFF 35-40 1 OR 2 OFF OFF 35-40 1 OR 2
ON OFF 40-70 2 ON OFF 40-60 2
ON OFF 70-75 2 OR 4 ON OFF 60-65 2 OR 4
ON ON 75-115 4 ON ON 65-115 4
Notes:
1. Condenser fan will de-energize at 5ºF below the energizing temperature
2. Compressor Stage 1 = CPR1
3. Compressor Stage 2 = CPR2 or CPR3 depending on staging sequence
4. Compressor Stage 3 = CPR1 & CPR2 or CPR2 & CPR3 depending on staging sequence
5. Compressor Stage 4 = CPR2 & CPR3
6. Compressor Stage 5 = CPR1 & CPR2 & CPR3
7. Conventional three stage thermostat sequence: Y1=CPR1 (Stage 1), Y2=CPR1&2 (Stage 3), Y1 + Y2 = CPR1,2,3 (Stage 5)
8. During active hot gas reheat all compressors will be staged “On”. For units equipped with four condenser fans (40 and 50 Ton), the
condenser fan output states will be controlled based on the O/A temperature. If O/A is above 85°F, all condenser fan outputs will be
energized. If O/A falls below 80°F, Output B will de-energize and will not re-energize again until the O/A rises above 85°F. For units
configured with three condenser fans (27.5 to 35 Ton), a maximum of two condenser fans will energize. Output A will energize above 85°
F and de-energize when the O/A falls below 80°F; Output B will remain de-energized during active hot gas reheat. If O/A falls below 80°F,
Output A will de-energize and will not re-energize again until O/A rises above 85°F.
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