Lochinvar 502, 752 Sys ***F, Sysrt, Valve ***%, Control will display the actual fan motor RPM

Page 14

User’s Information Manual

3SMART SYSTEM control module

Status Display Screens (cont’d)

By using the Previous/Next (￿, ￿) arrow keys on the SMART SYSTEM display panel, you can navigate through the nine (9) display screens. Each screen will contain two (2) viewable items. The following is a description of the individual items and what they can display:

Screen

Display shows:

Description

 

SYS: ***F

If the system supply sensor has not been selected as the control sensor,

 

only the system temperature will be displayed.

 

 

 

 

 

 

 

When the system supply sensor has been selected as the control sensor,

 

***F (***)

the control will display the system temperature as well as the set point

 

 

in parenthesis.

 

 

 

 

Open

The control does not detect the system supply sensor.

#3

 

 

Shorted

The system supply sensor wires or the sensor itself has become

 

shorted.

 

 

 

 

 

 

OUTDOOR: ***F

The control will display the outdoor air temperature as sensed by the

 

outdoor air sensor.

 

 

Open

The control does not detect the outdoor air sensor.

Shorted

The outdoor air sensor wires or the sensor itself has become grounded.

Press the Next ￿ arrow key on the SMART SYSTEM display to access Screen #4.

#4

 

The control will display the system return temperature if the system

SYSRT: ***

return sensor is connected. If not connected, the display will skip this

 

screen and display screen #5.

 

 

VALVE: ***%

The control will display the position of the 3-way valve; 100% indicates

that no outlet water is being bypassed into the inlet.

 

 

 

Press the Next ￿ arrow key on the SMART SYSTEM display to access Screen #5.

#5

FLUE: ***F

The control will display the flue temperature.

 

 

Open

The control does not detect the flue sensor.

 

 

Shorted

The flue sensor wires or the sensor itself has become shorted.

 

 

AUX: ***F

The control will display the temperature.

Open

The control does not detect the auxiliary sensor.

Shorted

The auxiliary sensor wires or the sensor itself has become shorted.

Press the Next ￿ arrow key on the SMART SYSTEM display to access Screen #6.

#6

FAN SPD: ****RPM

The control will display the actual fan motor RPM.

 

 

FLAME SIG: **.*uA

The control will display the flame signal in dc microamps.

 

 

Press the Next ￿ arrow key on the SMART SYSTEM display to access Screen #7.

14

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Contents Models 502, 752, 1002 1501, 1701, Up To 51 Turndown Save this manual for future referenceContents Hazard definitionsPlease read before proceeding Checking equipmentCodes See the following pages for instructions Maintenance schedule Service technicianOwner maintenance Maintenance schedule Maintenance proceduresInspect condensate system Test low water cutoff if installedReset button low water cutoff Check appliance piping gas and waterOperating instructions Installer Power-fin control moduleAccess modes Smart System control moduleParameter table Modify DisplayGeneral Temperature settings boiler onlyViewable and changeable control parameters Data loggingDHW settings Status display screens Valve ***% SYS ***FSysrt Control will display the actual fan motor RPMDelay 10V in **.VDCPBX-PFX-USER-Rev B CP-2M-8/07
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1501, 1002, 1302, 1701, 2001 specifications

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