13
ACCESSORY INSTALLATION
A. Outdoor Air Temperature Sensor (OAT)
EQUIPMENT OPERATION HAZARD
The installation of an outdoor air temperature sensor (OAT)
using the Infinity control board OAT terminals is required.
Many Infinity features (auto humidity control, comfort
rollback, etc.) will be lost if the OAT is not connected.
For detailed mounting instructions for the OAT sensor,
please refer to installation instructions shipped with the
OAT.
!
CAUTION
The OAT input is used to supply outdoor temperature data for
system level functions and for temperature display on User
Interface (UI). Using two wires of the field--supplied thermostat
wire cable, wire the ends of the two black OAT pigtails. Wire the
opposite ends of these two wires to the OAT provided with the UI.
There is no polarity to be observed.
NOTE
: Mis--wiring OAT inputs will not cause damage to either
Infinity control or thermistor. If the thermistor is wired incorrectly,
no reading will appear at UI. Re--wire thermistor correctly for
normal operation.
B. Humidifier Connections
The furnace control board terminal marked HUM is provided for
low voltage (24--vac) control of a humidifier. No humidistat is
required as UI monitors indoor humidity.
When commanded to operate humidifier, the unit control will
energize the HUM output to turn humidifier on and de--energize
HUM output to turn humidifier off. Wire HUM and COM
terminals directly to humidifier as shown in Fig. 15.
C. Electronic Air Cleaner
Electronic Air Cleaner terminals are provided on the Infinity
Control Board (EAC--1 and EAC--2). While these terminals can be
used to power a 230V EAC, it is recommended that any EAC be
installed per the EAC installation instructions and connected
separately to a standard 115V or 230V outlet with an airflow
sensor to control operation of the EAC.
SPECIAL PROCEDURES FOR 208--V OPERATION
Be sure unit disconnect switch is open.
Disconnect the black primary lead from the transformer. See unit
wiring label (See Fig. 17 and 18).
Connect the black primary lead to the transformer terminal labeled
200--v.
A09075
Fig. 12 -- Typical Installation
48X
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Summary of Contents for INFINITIR 15 SEER 48XT-A
Page 5: ...5 A09150 Fig 5 48XT A24 30 Unit Dimensions 48XT A...
Page 6: ...6 A09151 Fig 6 48XT A36 60 Unit Dimensions 48XT A...
Page 18: ...18 A09080 Fig 17 Wiring Schematic 48XT A Single Phase Gas Inputs 040 060 090 kBtu hr 48XT A...
Page 19: ...19 A09081 Fig 18 Wiring Schematic 48XT A Single Phase Gas Inputs 115 130 kBtu hr 48XT A...