Specifications

990-4618C-001 InRow Chilled Water Air Conditioners Technical Specifications 93
3. Heaters shall be provided with self-engaging electrical connectors upon installation. Heaters with
manually connected conductors are not acceptable.
Q. TEMPERATURE AND HUMIDITY SENSORS
1. ACRC301S/ACRC301H
a. Internal Sensors
1. Internal Temperature Sensors: Thermister temperature sensors shall be mounted
behind the front and rear doors to provide control inputs based on supply and return
air temperature. Sensor accuracy shall be within +/- 2ºF accuracy.
2. Internal Humidity Sensors: Humidity sensors shall be mounted behind the rear door
(ACRC301H only).
b. Remote Temperature Sensors
1. One remote temperature sensor shall be shipped with the unit for placement in the
field to provide control input based on rack inlet temperature.
2. ACRC500/ACRP500 series
a. Internal Sensors
1. Internal Temperature Sensors: Thermister temperature sensors shall be mounted
behind the front and rear doors to provide control inputs based on supply and return
air temperature. Sensor accuracy shall be within +/- 1ºF accuracy.
2. Internal Humidity Sensors: Humidity sensors shall be mounted behind both the front
and rear doors and shall provide control input based on humidity in supply air.
Humidifier sensor shall be +/- 3% RH accuracy full scale.
b. Remote Temperature Sensors
1. Three remote rack inlet temperature sensors shall be shipped with the unit for
placement in the field to provide control input based on rack inlet temperature.
3. Water Temperature Sensors: Internal supply and return chilled water temperature sensors shall be
installed into sealed wells. Wells are filled with thermal conducting heat transfer grease to provide
accurate temperature sensors.
R. SELECTABLE TOP OR BOTTOM PIPING
1. ACRC301S/ACRC301H
a. Bottom piping connections are standard from factory. Unit can be field modified for optional
top piping. Unit connections shall be made internal to the unit.
2. ACRC500/ACRP500 series
a. Pipe connections for field connection from either the top or bottom of the unit. Unit
connections shall be made internal to the unit.
b. The unit shall include two pipe adapters that convert a 38.1 mm (1 1/2 in.) NPT to a 38.1 mm
(1 1/2 in.) BSPT (manufactured in accordance with BS21). Pipe adapters shall ship loose with
the unit for field installation where applicable.