Trane TR200 Series - Page 193

20-30 Refrigerant
Option: Function:
Select the refrigerant used in the compressor application. This parameter
must be specified correctly for the pressure to temperature conversion
to be accurate. If the refrigerant used is not listed in choices [0] through
[6], select
User defined [7]. Then, use par.20-31 User Defined Refrigerant
A1, par.20-32 User Defined Refrigerant A2 and par.20-33 User Defined
Refrigerant A3 to provide A1, A2 and A3 for the equation below:
Temperature =
A 2
(
ln
(
Pe +1
)
− A 1
)
−
A 3
[0] * R22
[1] R134a
[2] R404A
[3] R407C
[4] R410A
[5] R502
[6] R744
[7] User defined
20-31 User Defined Refrigerant A1
Range: Function:
10.0000
N/A*
[8.0000 - 12.0000 N/A] Use this parameter to enter the value of coefficient A1 when par.
20-30
Refrigerant is set to User defined [7].
20-32 User Defined Refrigerant A2
Range: Function:
-2250.00
N/A*
[-3000.00 - -1500.00 N/A] Use this parameter to enter the value of coefficient A2 when par.
20-30
Refrigerant is set to User defined [7].
20-33 User Defined Refrigerant A3
Range: Function:
250.000
N/A*
[200.000 - 300.000 N/A] Use this parameter to enter the value of coefficient A3 when par.
20-30
Refrigerant is set to User defined [7].
Parameter Description
192 TR200 Programming Guide