Viconics VT8300 Low Voltage User Interface Guide Manuel d'utilisateur télécharger pdf (Page 25)

VT8300 Series

User Interface Guide

028-0427-01 www.viconics.com | sales@viconics.com November 2014

PARAMETER DETAILS SCREEN 5/7

Conﬁguration Parameters Default Value Signiﬁcance and Adjustments

Pipe no.

Default value: 4 pipes

Pipe Setting Type Installed

Deﬁnes type of system installed.

2 Pipes: limits number of sequences of operation available from

0 - 4. It also enables heat/cool operation from the same output.

4 Pipes: can access all sequences of operation from 0 - 2. Also enables

heat/cool operation from different output.

Seq. operation

Default value: Sequence #1

Sequence Operation

Selects initial sequence of operation required by installation type and

application.

System Modes System = 2 Pipes System = 4 Pipes

Off - Cool 0 = Cooling Only 0 = Cooling Only

Off - Heat 1 = Heating Only 1 = Heating Only

Off - Auto - Heat -

Cool

2 = Cooling With

Electric Reheat

2 = Cooling With

Electric Reheat

Off - Heat 3 = Heating With

Electric Reheat

3 = Heating With

Electric Reheat

Off - Auto - Heat -

Cool N/A

4 = Cooling and

Heating (2 modulating

outputs)

Off - Auto - Heat -

Cool N/A

5 = Cooling/Heating

(2 modulating out-

puts) with reheat

For 2 Pipe output applications, the system is

limited if conﬁgured for local changeover COS,

COC/NC or COC/NC. The current water tem-

perature detected by the RU1 then limits the

system mode available for the local conﬁgura-

tion or network write.

For Sequence 2 and 3, set PulsedHt to On to

enable pulsed electric reheat applications with

VT8300B and VT8300E

Purge Sample

Default value: 2 hours

Purge Sample

Time interval between valve samples. Opens valve for a short period ad-

justed by Purge open parameter to sample pipe temperature to decide

between heating or cooling mode.

Adjustable for 0 to 4 hours (0 = disable).

Purge Open

Default value: 2 minutes

Purge Open

Time valve opens to sample pipe temperature to decide between heating

or cooling mode.

Adjustable for 1 to 3 minutes.

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 44 45

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Viconics VT8300 Low Voltage User Interface Guide Manuel d'utilisateur Page 25

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