CeilAir DX Series Instrukcja Operatora Pobierz pdf (Strona 24)

(Mar, 2012)

CeilAiR OHS Series Installation, Operation & Maintenance Manual

ir Technology Systems, Inc.

2-13

2.7.2.1 A-Tech-1.1 Programmable Thermostat (Single Stage Unit; See Figure 7)

Set the dip switches located on the circuit board according to the application needs. Refer to the chart below

for factory settings. The thermostat requires four conductors wired to the control terminal board located within

the unit electrical box. The thermostat has a terminal strip with box type lugs for wire connections. Refer to the

electrical diagram for proper wire terminations.

Figure 7- A-Tech-1.1 Control Wiring

A-Tech-1.1 Dip Switch Settings

OFF ON OFF ON

1 4 min. on/off 2 min. on/off

Minimum time Y and W terminal will be energized, and minimum time must elapse between call. Minimum OFF

times can be overridden by raising and lowering the setpoint. Minimum ON times can only be overridden by

changing the mode.

2 Keypad unlocked Keypad locked

In locked position only the arrow keys and outdoor temperature button will respond. When any other key is pushed

a lock appears on the display. When locked, the setpoint can only be changed by ±3° (F or C) for one hour; when

done, a hour glass will appear on the display.

3 Fan w/HT cell Fan w/Plenum Switch

When off, the G terminal (fan) energizes with the W terminal (heat) immediately with a call for heat. When on,

the furnace controls the fan.

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CeilAir DX Series Instrukcja Operatora Strona 24