9
2.2.1 3-Way Chilled Water Valves
Unit Model
Valve Size
Valve CV
DACx 07
1”
10.0
DACx 09
1”
10.0
DACx 11
1-1/4”
10.0
DACx 13
1-1/2”
19.0
DACx 15
1-1/2”
19.0
DACx 18
2”
46.0
DACx 22
2”
46.0
DACx 26
2”
46.0
DACx 30
2”
46.0
DACx 40
2”
46.0
DACx 45
2”
46.0
DACx 50
2”
46.0
2.2.2 2-Way Chilled Water Valves
Close-off
Unit Model
Valve Size
Valve CV
Pressure, psi
DACx 07
1”
10.0
200
DACx 09
1”
10.0
200
DACx 11
1 1/4”
10.0
200
DAC x 13
1 1/2”
19.0
200
DACx 15
1 1/2”
19.0
200
DACx 18
2”
46.0
200
DACx 22
2”
46.0
200
DACx 26
2”
46.0
200
DACx 30
2”
46.0
200
DACx 40
2”
46.0
200
DACx 45
2”
46.0
200
DACx 50
2”
46.0
200
2.3
Condensate Drain Piping
Every indoor unit has a 3/4" copper stub provided for condensate removal. A union is
recommended at the field connection which will permit easy disconnection from the unit for cleaning.
A trap should be built into the drain line to prevent air from backing up into the unit. Drain
lines should be pitched downward not less than 1/4" for each ten feet of horizontal run. Do not
reduce the size of the drain line.
Some applications have no convenient means of allowing a gravity drain. In this case, a
condensate pump can be used. These come either factory mounted or shipped loose. Factory
mounted condensate pumps do not require a separate power source.
Condensate pumps shipped loose (or field provided) typically require a dedicated 110 volt power
source. Field pipe connections must be made to the pump discharge connection. A check valve
must be installed to prevent short cycling. See also condensate pump electrical requirements in
Section 3.9.
