Installation manual
7
ERAP110~170MBYNN
Air-cooled condensing units
4PW22680-1E
A
NNEX
I
■
Connection to an air handling installation with face and bypass
register for control of the air temperature.
The thermostat sensor (R4T) delivered with the ERAP unit is to
be mounted in a holder on the air cooled evaporator.
The ERAP unit will keep the cooling battery temperature to a
constant value.
A field supplied room thermostat (RT) is controlling the face and
bypass registers for control of the air temperature.
■
Connection to an air handling installation with face and bypass
register for control of the air temperature and the relative
humidity.
The thermostat sensor (R4T) delivered with the ERAP unit is to
be mounted in a holder on the air cooled evaporator.
The setpoint for the temperature of the cooling battery will
change depending on the relative humidity in the room. For this
purpose, a relative humidity sensor (RH) with a 4~20 mA or
0~10 V output is connected to the ERAP unit. The setpoint is
programmed in function of the relative humidity. (See also
"Defining the setpoint signal setting" on page 6
.)
A room thermostat (RT) is controlling the face and bypass
registers for control of the air temperature.
N
OTES
1
Face register
2
Bypass register
3
Air cooled evaporator
4
Thermostat sensor (R4T)
5
Fan
6
Room thermostat (RT)
7
ERAP unit
8
Servo motor for face/bypass registers
1
Face register
2
Bypass register
3
Air cooled evaporator
4
Thermostat sensor (R4T)
5
Fan
6
Room thermostat (RT)
7
ERAP unit
8
Servo motor for face/bypass registers
9
Relative humidity sensor (RH)
RT
ERAP
2
1
4
8
6
5
3
7
RT
RH
ERAP
2
1
4
8
6
5
9
7
3
