Filter
Top Products
InRoom Precision AC Tech Data Manual78
N. ADDITIONAL PROGRAMMABLE INPUT/OUTPUT (I/O)
1. The heart of the control system is the I/O controller on which up to 4 EAIO/EDIO boards
shall be connected for additional inputs and outputs. The InRoom Controller Manual has a
detailed description of inputs and outputs for InRoom configuration.
O. EVAPORATOR FREEZE PROTECTION
1. Suction pressure shall be actively monitored by two individual sensors and controlled by the
microprocessor to calculate the opening of the electronic expansion valve (EEV), eliminating
the risk of condensate freeze-up on the evaporator.
P. PREDICTIVE FAILURE WARNINGS
1. Several components within the unit, such as the compressor, blower, heater, and humidifier,
shall provide a warning through the display interface that service is needed.
Q. STEAM GENERATING HUMIDIFIER
1. The humidifier shall be able to modulate capacity. The humidifier shall be self-contained,
steam-generating, factory-piped and wired, with a disposable cylinder and automatic solid-
state control circuit. Humidifier canisters are replaceable. The humidifier controller shall
communicate directly to the microprocessor controller and provide complete status and
control at the display interface.
R. SILICONE CONTROLLED RECTIFIER (SCR) ELECTRIC REHEAT
1. Reheat elements shall be low watt density, wired for three-phase, loaded equally on all three
phases and electrically and thermally protected by both automatic and manual reset thermal
cutouts. Reheat capacity shall be _______ MBH, _______ kW, SCR controlled. Reheat coils
shall be stainless steel, fin, and tube construction.
S. HIGH LIFT, SINGLE FLOAT CONDENSATE PUMP
1. The shipped loose, field-installed and wired condensate pump shall pump 1275 L/s (337
GPH) at 6.09 m (20 ft) head. The tank capacity shall be 3.78 L/s (1 USG).
T. BRAZED PLATE CONDENSER
1. Water and glycol cooled systems shall employ a brazed plate heat exchanger. The condenser
shall be equipped with clean-out plugs.
U. WATER REGULATING VALVES
1. Water and glycol cooled systems shall utilize two-way or three-way valves to regulate the
amount of water or glycol supplied to the condenser in response to refrigerant discharge
pressure. The standard valve pressure rating shall be 2758 kPa (400 psi).
V. DISCHARGE DUCT COLLAR
1. A 25.4 mm (1 in) duct flange shall be provided for field installation on a unit to provide
convenient connection to external ductwork.
A-In A-Out D-In D-Out
IOC Board 5 4 11 7
EAIO Board4411
EDIO Board1186