Specifications

990-4617 InRow™ Direct Expansion Air Conditioners Technical Specifications 63
J. FILTERS
1. ACRD100 series and ACRD200 series:
a.The standard filters shall be 20% efficient per ASHRAE 52.1, MERV 1 per ASHRAE 52.2, 1/2 in
washable mesh filter.
b.The optional filter shall be high capacity 2 in pleated, UL 900 Class 2, moisture resistant, with
average atmospheric dust spot efficiency of 30%, per AHRAE Standard 52.1, MERV 8 per
ASHRAE 52.2.
2. ACRD500/ACRP100
a. The standard filters shall be 30% efficient per ASHRAE Standard 52.1, UL Class 2 (MERV 8
per ASHRAE 52.2). Filters shall be EN779 G4 efficient.The 3.75 in (96 mm) deep, pleated
filters shall be replaceable from the rear of the unit.
b. The optional filter shall be 85% efficient per ASHRAE Standard 52.1 (MERV 13 per
ASHRAE 52.2, EN779 F7).
K. HUMIDIFIER (ACRP100 only)
1. Humidifier shall be able to modulate capacity. The humidifier shall be self-contained, steam-
generating type, factory piped and wired, with disposable cylinder and automatic solid-state
control circuit. Humidifier canisters shall be replaceable. The humidifier controller shall
communicate directly to the microprocessor controller and provide complete status and control at
the operator interface. Humidifier shall control flush cycling and conductivity via automated
controls. Humidifier shall be capable of producing up to 6.6 lbs (3 kg) of steam per hour.
L. ELECTRIC REHEAT (ACRP100 only)
1. Reheat elements shall be low watt density, wired for three-phase, loaded equally on all three phases
and shall be electrically and thermally protected by both automatic and manual reset cutouts.
Reheat capacity shall be 6 kW.
2. Reheat coils shall be stainless steel, fin tubular construction. Heater casing shall be 20 gauge G90
galvanized steel.
3. Heater shall be provided with self-engaging electrical connectors upon installation. Heater with
manually connected conductors are not acceptable.
M. TEMPERATURE AND HUMIDITY SENSORS
1. Internal Temperature Sensors: Thermistor 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 +/– 1 degree F accuracy.
2. Remote Temperature Sensors: Three remote rack inlet temperature sensors shall be shipped with
the unit to provide control input based on rack inlet temperature.
3. Remote Temperature Sensors
a. ACRD500/ACRP100 series: Three remote rack inlet temperature sensors shall be shipped with
the unit to provide control input based on rack inlet temperature.
b. ACRD100 and ACRD200 series: One remote rack inlet temperature sensor shall be shipped
with the unit to provide control input based on rack inlet temperature.