Programming – PVI Industries PV500-40 User Manual

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PV500-40 04/2013

1.7

TO SET THE ENERGY SAVING TIME (NIGHTIME SETBACK)

1. Push and hold the

button for more than 3 seconds and the first parameter of the energy saving will be

displayed.

2. Use

the

buttons to browse them.

3. To change a value, push the

button followed by

and then the

button again.

4. To exit from the menu, press

and

or wait for 30 seconds.

1.8

TO SET MODULATION PARAMETERS

1. Push and hold the

button for more than 3 seconds and the

LED will switch ON and a passkey will

be required to view and manually change the modulation % value. Passkey is “321”.

2. Upon entering the password, the modulation % value will be displayed in the lower display.

3. To manually adjust this value, push the

button; the value will start flashing. Adjust it by using the

buttons and then the

button again.

4. To exit from the menu, press

and

together or wait for 30 seconds.

2. PROGRAMMING

2.1

SETPOINT DESCRIPTIONS AND PROGRAMMING

Setpoints are those temperature or operating parameters that the user can adjust.

St 1 - This setpoint temperature should be considered the °F or °C temperature threshold to activate the energy
source. The setpoint corresponds directly to the temperature sensed by probe 1. The St 1 setpoint is programmed as
an absolute temperature; for example 120°F.

St 2 - This setpoint corresponds to either the threshold for second-stage burner operation or an ancillary devise such
as a pump. The St 2 setpoint is either programmed as the number of degrees below St 1 (setpoint 1) when the second
stage will activate; for instance, - 8°F OR as an independent; for instance 115°F. The St 2 setpoint is only applicable
on products that have stage-fired/modulating burners or ancillary components such as circulation pumps.

St 3 - This setpoint represents the temperature threshold for activation of freeze protection or flue gas temperature
protection, depending on the product or application. The St 3 setpoint is programmed as an absolute temperature; for
example 40°F or 150°F. The St 3 setpoint is only applicable on products that have freeze protection or require flue gas
temperature protection.