Bryant T2-NHP Manual de Instruções descarregar pdf (Página 20)

Homeowners Guide for details. If batteries are installed and the thermostat is

operated from 24VAC power, battery operation will occur only when 24VAC

power is not present. The changeover between 24VAC power and battery power

is automatic.

Display Lighting

The display has two levels of lighting, high level and low level. High level

lighting comes on for 10 seconds when the door is opened and/or buttons are

being pressed with 24VAC and with batteries. Low level lighting is only

available if the thermostat is operated from 24VAC. It is not available with

batteries. The low level can be selected (see Option 18) for continuous backlight.

Door Switch

Whe n the door is opened, t he dis pl ay change s from its norma l oper ation vie w.

The la rge te m pe rature display disappe ar s s o it will be availa ble for othe r us er

funct i ons. If the door is le f t open f or 3 minutes , the dis pl ay reve r ts to norma l

opera ti on.

Mounting Options

For those installations requiring it, mounting hole locations for the

programmable model are spaced to fit either a horizontal or vertical junction box.

Mounting hole locations for the non--programmable are spaced to fit a horizontal

junction box.

Defrost Operation

In a HP installation with the “O” selection of Option 10, the thermostat allows all

defrost cycles to run to completion before turning off the compressor. It does this

by sensing a 24VAC signal on the O line which it did not produce. This occurs

while the HP is defrosting. As long as this O signal is present, the thermostat will

keep the Y output on, even if it is satisfied, thus allowing the defrost cycle to

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Bryant T2-NHP Manual de Instruções Página 20