Trane CGWH 115 - Water Treatment; Compressor Sequencing

11CGWH-SVX01D-E4
Installation
Water treatment
Untreated or insufficiently treated
water, if used in this unit, may
cause scale, slime or algae to
accumulate or cause erosion and
corrosion. As Trane does not
know the components used in the
hydraulic network and the quality
of the water used, we recommend
the services of a qualified water
treatment specialist.
The following materials are used in
Trane chillers heat exchangers :
- Stainless steel plates AISI 316,
1.4401 witch copper brasing.
- Water piping : copper 99,9 %
- Water connections : brass
Trane will not accept any ability in
regards of damage due to the use
of untreated or improperly treated
water or from the use of saline or
brackish water.
If required, contact your local Trane
sales office.
Compressor sequencing
Tables 9 and 10 show compressor
sequencing at the start of the unit.
«Balanced» means that there is
no fixed sequence, Compressors
are started in order to balance
compressor total running times.
Table 9
Unit Model Unit size
COMPRESSOR LOCATION
Recommended Sequence
Number of
capacity
stages
Circuit 1 Circuit 2
1 2 3 4 Circuit 1 Circuit 2
CGWH
115 10 T 10 T
Balanced
2
120 10 T 15 T 3
125 15 T 15 T 2
225 10 T 10 T 15 T 5
230 10 T 15 T 15 T 5
235 15 T 15 T 15 T 3
240 10 T 15 T 10 T 15 T 6
250 15 T 15 T 15 T 15 T 4
Table 10
Unit Model Unit size
COMPRESSOR LOCATION
Sequence
Number of
capacity
stages
Circuit 1 Circuit 2
1 2 3 4 Circuit 1 Circuit 2
CCUH
115 10 T 10 T Balanced 2
120 10 T 15 T Comp 2 first 3
125 15 T 15 T Balanced 2
225 10 T 10 T 15 T Balanced 5
230 10 T 15 T 15 T
Comp 2 or 3 first, if 3, then 2 is
second, comp 1 is 3rd
3
235 15 T 15 T 15 T Balanced 3
240 10 T 15 T 10 T 15 T Comp 2 first Comp 4 first 4
250 15 T 15 T 15 T 15 T Balanced 4