Lochinvar Power-Fin, Knight, Knight XL, Knight Wall Mount Installation Manual

This manual must only be used by a
qualified heating installer / service
technician. Read all instructions,
including this manual, the
Installation and Operation Manuals,
and the Service Manuals, before
installing. Perform steps in the
order given. Failure to comply could
result in severe personal injury,
death, or substantial property
damage.



WARNING

Save this manual for future reference.

PC PROGRAM INSTRUCTIONS

Models: Power-Fin, Knight, Knight XL,

Knight Wall Mount and Armor

SM-PCP REV B

2

PC Program Instructions

Contents

1. INSTALLATION

Program Installation ..................................................... 3

USB Installation............................................................ 3

Program Setup............................................................. 3

Starting the Program.................................................... 4-6

2. SMART SYSTEM Status Screen ................................. 5

3. SMART SYSTEM Graphics Screen............................. 7

4. SMART SYSTEM Fault History Screen....................... 8

5. SMART SYSTEM Cascade Screen............................. 9

6. POWER-FIN PARAMETERS

Parameter Information Screens ...................................10

Changeable Parameters ..............................................11

Set 2: Functional Data .................................................11

Set 4: Menu Values......................................................12-19

7. KNIGHT, KNIGHT XL, KNIGHT WALL MOUNT, and
ARMOR PARAMETERS

Parameter Information Screens ...................................20

Changeable Parameters ..............................................21

Set 1: System Setup ....................................................21

Set 2: Functional Data .................................................22

Set 4: Menu Values......................................................23-29

8. NOTES.........................................................................30-31

PC Program Instructions

3

1 Installation

Program installation

To begin installation of the program, please insert your Smart
System CD into the CD drive. If you have Autostart enabled,
the Smart System software screen will load. If not, navigate to
your CD drive and double-click on index.html. Once the
screen opens, select the program you wish to install. Follow
the prompts then restart your computer.

If you wish to have the PC program icon on your desktop,
click on START, and then Programs. Right click on SMART
SYSTEM PC. Place the cursor over Send to >, and then click
on Desktop. The icon will appear on the Desktop Screen.

USB installation

Your PC will communicate with the SMART SYSTEM control
through the USB cable adapter combo included with your kit.
This cable will require a specific USB driver. This driver may
be installed by starting the SMART SYSTEM PC program,
clicking on the Settings pull-down menu, and clicking on
Comport> item. In the next menu, you will have the option
of installing one of two USB drivers. Select the option
appropriate for the operating system used by your PC. The
necessary driver will install automaticall

y.

Program setup

The PC will assign a ComPort to your new adapter. You will
need to know the ComPort number it uses in order to tell the
Smart System PC program which one to communicate with:

1. Click on Start, then Control Panel, then on the System icon
(use the Classic View), then on the Hardware tab, and then
on the Device Manager button. You will see a list of the
hardware on your PC.

2. Double click on “Ports (COM&LPT)”. You will see an
entry called “USB Serial Port (COM4)”. The ComPort
number may be different on your computer but the device
description will be the same. The Smart System PC program
can communicate through Comports 1 – 16 on all models.
If the Comport assigned by your computer is a value larger
than what is available in the Smart System PC program, you
will need to manually reassign the ComPort on your
computer.

3. Go back to the “Ports (COM&LPT)” area referenced above
and take note of any unused ComPort between COM1 to
COM16. Double click on the “USB Serial Port”.

4. Click on the “Port Settings” tab, then on the “Advanced”
button. Select an unused Comport number (preferably
COM1) in the range of COM1 to COM16 Click on OK.
Click OK on the previous window and then close all of the
other windows.

5. Restart your PC to make sure the new ComPort number is
active. When you attach the USB cable to the PC, the PC
should recognize the cable. The first time you start up the
Smart System PC program, click on the “Settings” tab at
the top of the screen, then click on “Comport”. Select the
ComPort number assigned to the USB cable above.

The program displays temperatures in °F. If you wish to display
temperatures in °C, click on the Settings tab along the top of the
Main Screen window, and move the cursor over Temperature >
in the pull-down menu. A new menu will appear, click on
Celsius.

 CAUTION

DO NOT connect a phone line to the
phone jack on the front display.

4

PC Program Instructions

1 Installation

Figure 1-1_Main Screen

Starting the program

To start the program, double click on the icon (if you put it on
your desktop), or click on START, then Programs, then
SMART SYSTEM PC. See FIG. 1-1 on page 4.

There are two access levels for this program. The user access
level allows only certain settings to be changed. The installer
access level allows more settings to be changed. The program
defaults to the user level when started. You will notice that a
lock symbol appears in the lower right-hand corner of the
window. To move to the installer level, a password must be
entered. This password is located on a label on the CD-ROM
case. You may enter the password by clicking on the “key”
button in the upper left-hand corner of the window. A
window opens in which you can type in the password (see
FIG. 1-2). Note that the password is case sensitive and is in all
CAPS. Click on the Ok button, or press the Enter key. You will
notice that the lock symbol at the lower right-hand corner of
the window has changed into a key symbol.

Figure 1-2_Password Window

There are some fields along the bottom of the window
(FIG. 1-1): The left field shows the location of the program.
The next field shows the status of the communication between
the PC and the SMART SYSTEM. This will say “No
connection” when the program is started. As soon as the
program sends or receives data from the SMART SYSTEM,
this field will show “Connected”. The right field shows the
filename of the parameter file in the program’s memory (see
the following parameters).

2 SMART SYSTEM Status screen

5

PC Program Instructions

Figure 2-1_SMART SYSTEM Status Screen

To monitor and record the operation of the heater, click on the
Status tab along the top of the Main Screen window (FIG. 1-1,
page 4). The SMART SYSTEM Status Screen will appear (see
FIG. 2-1 above). The screen is divided into several sections.

The Sensors section displays the current temperatures seen by
the Inlet, Outlet, System Inlet, System Outlet, Tank, Outdoor,
and Flue sensors. It also shows the delta T across the heat
exchanger and the voltage being applied to the 0-10Vdc input
(FIG. 2-1). The controlling sensor is shown below the items
mentioned above. The default controlling sensor is the Outlet
sensor. If a System Supply sensor is connected, the control will
automatically use it as the controlling sensor.

The SMART SYSTEM can be programmed to use the Inlet
sensor if desired. When so programmed, the Outlet sensor
will be displayed for the first 3 minutes after the burner lights,
and then the Inlet sensor will be displayed.

Power-fin Models Only: If a System Return sensor is
connected, the control will use it as the controlling sensor, and
display its reading instead.

Below the temperature readings are Derivative Flue and
Derivative Outlet. These show how quickly these
temperatures are changing. The control will take certain
actions based on these values. For instance, if the outlet
temperature rises too quickly, the control will force the heater
to run at low fire.

To the right of the sensor temperature readings are the
various setpoints. The SH setpoint is the setpoint the SMART
SYSTEM uses during a space heating call for heat. Note that
this setpoint will depend upon the outdoor temperature if the
outdoor air sensor is connected. When the 0-10Vdc input is
used, this setpoint will vary with the input voltage if it is used
to control the setpoint. The tank setpoint is the setpoint used
when a Tank sensor is connected. The DHW Mod Setpt is the
outlet temperature setpoint used when heating an indirect
DHW tank. The dSP setpoint is used when the inlet sensor is
programmed as the controlling sensor. Below these is a check
box indicating if Night Setback is active or not. Finally, the
HSI Current and Flame Current are shown.

Below the Sensors section is the Inputs section (FIG. 2-1).
This section displays the status of the Enable (Room
Thermostat) Input, DHW Thermostat, Manual Reset High
Limit, Flow Switch/Low Water Cutoff (optional), Gas Pressure
Switch (optional), Louver Proving Switch (optional), Air
Pressure Switch, Blocked Drain Switch, and Auto Reset High
Limit Switch.

Next to the Inputs section is the Outputs section (FIG. 2-1).
This section shows the status of the Boiler (secondary) pump,
System (primary) Pump, DHW Pump, Blower, Gas Valve (1),
Run-time Contacts, and Alarm Contacts.

2 SMART SYSTEM Status screen

6

PC Program Instructions

Power-fin Models Only: If a 3-way bypass valve is
installed, the display will indicate how much of the flow is not
bypassed. The Gas Valve 2 output is not used.

At the top right of the window is the Fan Speed status
information (FIG. 2-1). Included in the Fan Speed status are
Min., Max., and Ignition fan speeds. If Ramp Delay is
activated, the Ramp Delay limit is shown. The target and
actual fan speeds are displayed, and if the actual speed is
within acceptable limits. If the SMART SYSTEM is
programmed to be controlled by a Building Management
System (BMS), and programmed to have the BMS control the
power from the boiler, then the percent of max. power is
displayed. Finally, should select temperatures or the flame
current approach certain limits, the SMART SYSTEM will
force the fan speed up or down accordingly to prevent
exceeding those limits. When this happens, the box next to
the corresponding sensor is checked.

Below the Fan Speed status is the Boiler Configuration. This
indicates the application to which the SMART SYSTEM is
programmed to be used (water heater or boiler with indirect
DHW), and the source of control (thermostat, BMS, or
cascade depending on the model). The ID plug information
is used in production to verify the correct programming of
the control on Power-fin models.

Finally, the General status of the boiler is shown. Included in
the General status is the active call for heat (if any), the active
limits (if any), the last active limit, the burner status, the last
fault, and the date and time as stored in the SMART SYSTEM.

While in the SMART SYSTEM Status Screen, you can generate
a log file of the readings as the heater operates. Click on the
Options button at the bottom right-hand corner of the screen
(FIG. 2-1). Press the LogFile button and define a log file
name and the directory you want it to be located in. Click
OK. When you want to start logging data, click the Log
button. The Log button will turn green to indicate that it is
logging. You will also notice the filename at the top of the
window, and will see the size increase as data is logged to the
file. To stop logging, click on the Options button, then click
on the Log button again. The Log button will turn back to
gray to indicate that logging has stopped. If you desire to log
data over an extended period of time, you may want to select
a longer Log every time so the log file doesn’t grow too large.

You can also produce a bitmap of the window. Click on the
Options button, then the Bitmap button. A bitmap of the
window will be saved into the ENCONFLS directory below
the directory in which the SMART SYSTEM program resides.

7

3 SMART SYSTEM Graphics screen

PC Program Instructions

The SMART SYSTEM Graphics Screen allows you to observe
the changes in various readings while the heater operates (see
FIG. 3-1). By default, the Outlet Temperature, Inlet
Temperature, System Supply Temperature (if connected),
Outdoor Temperature (if connected), Tank Sensor
Temperature (if connected), Space Heating setpoint, Tank
setpoint, 0-10Vdc input voltage, System Inlet Temperature (if
connected), fan speed, and 3-way Bypass Valve (Power- fin
Models Only) are plotted.

In addition, the status of the Gas Valve Output, Flame
Current, and Pump Outputs are indicated by horizontal lines.
When these readings are off, the line is thin; when on, the line
is wide. Any of these readings can be removed from the graph
by deselecting them at the bottom of the window. The
current values of these readings are also displayed at the
bottom of the window as depicted in FIG. 3-1.

The time scale and vertical (Y) scale can be changed by
clicking on the Options button to get the Options window,
and then the Up or Down buttons for the desired scale. Note
that the vertical scale has two numbers for each division. The
top number represents °F, and the bottom number represents
°C. Press the Ok button to close the Options window. The
background color of the Graphics Screen can be changed by
pressing the Display button on the Options window.

Figure 3-1_SMART SYSTEM Graphics Screen

As with the SMART SYSTEM Status Screen, a log file can be
generated to record the performance of the appliance. Click
on the Options button to open the Options window. Click on
the LogFile button to create a file name and define the folder
in which to put it. Once a Log File is defined, click on the Log
button to start logging the readings. The Log button will turn
green to indicate that the program is logging, and the log file
size will appear at the top of the Graphics Screen window.
Note that the file size will increase as more readings are
logged. Click on the Log button again to stop logging of the
readings. The Log button will turn gray again to indicate that
logging has stopped.

A bitmap can also be generated of the SMART SYSTEM
Graphics Screen. Click on the Options button, and then the
Bitmap button. A bitmap of the window will be saved into
the C:/program files/SMART SYSTEM PC/enconfls directory.

8

4 SMART SYSTEM Fault history screen

PC Program Instructions

Figure 4-1_Fault History Screen

The Fault History Screen provides historical data about the
operation of the SMART SYSTEM. Click on the Fault history
button along the top of the Main Screen window (FIG. 1-1),
and then click on Read from Control in the pull-down menu.
After uploading data from the SMART SYSTEM, a window
will appear with the status of numerous counters and lists of
the most recent events (see FIG. 4-1 above). Included are
details of the control board serial number, software version,
default parameters, production date, and last service date.
The number of times various faults have occurred is also
shown. The last 10 faults are listed, as well as the last 10
blockings (a blocking is an event that causes the burner to
shut off). In addition, the number of hours the control has
operated in various states is shown, as well as the number of
successful and failed ignition attempts. Finally, a count of
internal checks is shown.

The total number of occurrences of certain faults are also
stored in the control and shown on the left side of the screen.
The column on the right shows the total occurrences since the
control was built. The column on the left shows the total
occurrences since the table was reset. Press the Erase table
button at the bottom of the window to clear the totals in the
column on the left. This will also clear the Last 10 faults and
the Last 10 blockings.

Some of this information may be needed by a service
technician to diagnose a problem, so provision is made to
create a file in which to save this data. Click on Save file, and
define a file name and the folder in which to save it. A bitmap
can also be saved by clicking on the Bitmap button at the
bottom of the Fault History Screen (FIG. 4-1). The bitmap
file will be saved to the folder ENCONFLS located below the
file in which the SMART SYSTEM program resides.

9

5 SMART SYSTEM Cascade screen

PC Program Instructions

Figure 5-1_Cascade Screen

The Cascade Screen provides the status of the cascade system.
The PC must be connected to the Leader (address 0)
appliance. Click on the Cascade button along the top of the
Main Screen window (FIG. 1-1).

The Cascade System area shows the power demand and
setpoint, the boiler pump status, the boiler status, and the
priority of each heater in the cascade. If a tank sensor (water
heaters) or system supply sensor (boilers) is connected to the
Leader heater, the cascade control will send a fixed setpoint of
215°F (102°C) (Power-fin boiler only); 185°F (85°C) (Knight
boilers only) or a setpoint equal to the tank setpoint +27°F
(15°C) (water heaters) and a power (% modulation)
command to all the heaters as required to maintain the
controlled temperature at the setpoint. On boilers, if a system
supply sensor is not connected (NOT recommended), the
Leader will send the space heating setpoint to all of the boilers
in the cascade and each boiler will fire as required to hold their
outlet sensors to this setpoint.

The Priority column indicates the order in which the heaters
will fire to meet the load. This order changes every hour
during the first day of operation, andevery24 hours thereafter.

The Sensors area displays the system supply or tank sensor
temperature, and space heating or tank setpoint (see FIG. 5-1).

Power-Fin Models Only: Beneath this area is a check box
indicating if Night Setback is active. Beneath that is a check
box indicating if the Dead zone is active.

The Dead zone is active whenever the actual temperature is
near the setpoint and the target modulation rate for the last
boiler to fire is below its minimum firing rate. In this zone, the
calculated total firing rate is held steady. Once the actual
temperature goes too far above or below the setpoint, the total
firing rate is adjusted accordingly.

The Status area displays several important parameters. The
Cascade Pump gives the status of the system pump output,
and the type of heat demand (Space Heating or DHW). The
Cascade power shows the power target for the cascade, and
the total power available. This target power may not be the
same as the total power shown in the Cascade System area,
due to the various time delays described below. The Cascade
Max and Cascade Min values show the maximum and
minimum fan speed percentages available in all of the heaters.
The Off Timer and On Timer are used to force each boiler to
have a minimum off and on time, to prevent short cycling.
The Block Switch on the timer is started whenever a heater is
commanded to start, and the next heater is prevented from
starting until this timer times out. This allows time for the
system supply or tank sensor to read the temperature change
resulting from firing the last heater, before starting the next
heater.

By clicking on the Options button, a log file can be defined,
and logging can be started and stopped in the same way as
with the Status and Graphics Screens previously described. A
bitmap of the current screen can also be saved if desired.

6 Power-fin Parameters

10

PC Program Instructions

Parameter information screens

By accessing the Parameter Information Screens, the installer
can view all of the SMART SYSTEM parameters. The installer
can also change certain specific parameters to fine tune the
operation of the heater to the installation.

To access the parameter list, click on the Parameters button
along the top of the Main Screen window (FIG. 6-1). Next
click on Retrieve Parameters from Controller in the pull
down menu (see FIG. 6-1). This will upload the current
parameters in the SMART SYSTEM to the PC.

Figure 6-1_Parameters Pull-Down Menu Screen

Adjustable parameters are located in:

Set 2: Functional Data

Set 4: Menu Values

While many parameters are viewable in each set, only select
parameters are adjustable. To make an adjustment to a
parameter, select the parameter to be changed from the
appropriate set. Click on the box next to the parameter and
type in the value for the parameter.

Once an adjustment has been made to a parameter, it must be
programmed into the SMART SYSTEM.

On the Parameters pull down menu, click on the Program
Parameters into Control button. This will bring up another
pull down menu. If a parameter was changed in just one set,
select the set from the menu and click on it. If changes were
made in multiple sets, select the Store Parameter Set 0-6 from
the menu and click on it. This will program the new
parameters into the SMART SYSTEM.

While the programming is taking place, the SMART SYSTEM
will go into a lockout mode. It requires the Enter/Reset
button on the display to be pressed after the programming has
been completed before the appliance will be allowed to
operate.

6 Power-fin Parameters (continued)

PC Program Instructions

Changeable parameters

The following is a brief discussion of the changeable parameters,
their default settings, the range of adjustment, and their
location. The title for the parameters may differ slightly between
the PC and the heater display. To prevent confusion, the heater
display version will be listed in parenthesis.

Figure 6-3_Parameter Set 2E

11

Set 2: Functional Data

Set 2 is accessed by clicking on Parameters at the top of the
Main Screen window, then clicking on Set 2: Functional Data on
the pull-down menu (FIG. 6-1, page 10).

3-Way bypass valve

In order to prevent condensation of the flue products on the
heat exchanger, a 3-way bypass valve may be installed and
connected to the low voltage connection board on the rear of the
heater. This SMART SYSTEM control will automatically adjust
this valve to maintain a minimum inlet temperature of 140°F
(60°C). If the inlet temperature remains below 140°F (60°C) for
15 minutes after the appliance has fired, an “IN TEMP LOW”
message will appear on the heater display and the alarm contacts
will close. Parameters 2BJ through 2BM determine part of the
operation of this condensing protection feature. To access these,
click on the tab marked 2B General Settings (FIG. 6-2).

Low inlet temperature alarm delay

This parameter determines how long the inlet temperature
must remain below 140°F (60°C) - parameter 2BL before the
display shows “IN TEMP LOW” and the alarm contacts close. It
can be adjusted by accessing parameter 2BM. It is adjustable
from 0 to 42.5 minutes. The default value is 15 minutes.

For additional bypass valve parameter adjustments, see also
parameters 4B.

NOTICE

CONTINUOUS OPERATION AT AN
INLET TEMPERATURE BELOW 140°F
(60°C) CAN RESULT IN NON­WARRANTABLE DAMAGE TO THE HEAT
EXCHANGER.

Special pump delay functions

The parameters for special pump delay functions are accessed
by clicking on the tab labeled 2E Pump Setup (see FIG. 6-3).

Bypass valve dead zone area

This parameter is used to prevent the 3-way bypass valve from
adjusting too frequently. The target position must change by
the amount programmed before the valve position is changed.
This can be changed by accessing parameter 2BK. This is
adjustable from 0 to 100 percent. The default value is 2 percent.

Low inlet temperature alarm offset

This parameter determines how far below 140°F (60°C) the
actual inlet temperature must remain before the display shows
“IN TEMP LOW” and the alarm contacts close. This can be
adjusted by accessing parameter 2BL. This is adjustable from 0
to 36°F (0 to 20°C). The default value is 10°F (5.5°C).

Figure 6-2_Parameter Set 2B

Transition time bypass valve open-close

This parameter is set to the total time needed by the valve to
move from the fully open to fully bypassed positions. This can
be changed by accessing parameter 2BJ. This time is adjustable
from 0 to 51 seconds. The default value is 15 seconds.

6 Power-fin Parameters

12

PC Program Instructions

Figure 6-4_Parameter Set 4A

Set 4: Menu values

Set 4 contains parameters that can be accessed from the
heater display. The parameters in this set control the basic
operation of the heater. To access these parameters, click on
Parameters at the top of the Main Screen window (FIG. 6-1,
page 10), then click on Set 4: Menu Values on the pull-down
menu.

SH User setpoint (SH setpoint)

The SH User Setpoint sets the water temperature setpoint for
fixed operation or the maximum temperature setpoint when
the outdoor air sensor is used. This parameter can be changed
by accessing parameter 4AA. The temperature range of this
parameter is 50°F (10°C) to 260°F (127°C). The default value
is 120°F (82°C).

SH Min user setpoint (Minimum SH Setpoint)

The SH Minimum User Setpoint sets the minimum water
temperature setpoint that can be used for space heating
operation. The user or installer will not be able to program
the control with a lower SH setpoint. This parameter can be
changed by accessing parameter 4AB. The temperature range
of this parameter is 32°F (0°C) to 248°F (120°C). The default
value is 70°F (21°C).

SH Max user setpoint (Maximum SH setpoint)

The SH Maximum User Setpoint sets the maximum water
temperature setpoint that can be used for space heating. The
user or installer will not be able to program the control with a
higher SH setpoint. This parameter can be changed by
accessing parameter 4AC. The temperature range of this
parameter is 32°F (0°C) to 260°F (127°C). The default value
is 220°F (104°C).

SH turn-off differential (Offset SH)

The SH Turn-off Differential sets how many degrees above
setpoint the temperature has to go before the boiler will shut
off. This parameter can be changed by accessing parameter
4AD. The temperature range of this parameter is 0°F (0°C) to
54°F (30°C). The default value is 10°F (5.5°C).

SH off-on differential (Differential SH)

The SH Off-On Differential sets how many degrees below the
turn-off temperature the temperature has to go before the
boiler will turn on. This parameter can be changed by
accessing parameter 4AE. The temperature range of this
parameter is 0°F (0°C) to 54°F (30°C). The default value is
20°F (11°C).

Parameter 2EB sets the pump delay time for the boiler pump
after an over-temperature condition. This time is adjustable
from 0 to 40 minutes. The default time is 2 minutes.

If the boiler pump or DHW pump have not been active in a
24 hour period, the SMART SYSTEM will activate the
appropriate pump for a programmed time to prevent seizing.
The boiler pump time can be changed by accessing parameter
2EC. This time is adjustable from 0 to 40 minutes. The
default time is 20 seconds. The DHW pump time can be
changed by accessing parameter 2ED. This time is adjustable
from 0 to 40 minutes. The default time is 20 seconds.

Drop of inlet temp before ending anti-cycling
(Return Temperature Differential for Ending Anti­Cycling)

The control will bypass the Anti-Cycling time if the inlet
water temperature drops too much. The control will use the
inlet water temperature when it shuts off as the starting point.
If the temperature drops this amount below the starting
point, the control will abort anti-cycling and allow the boiler
to fire. This parameter can be changed by accessing
parameter 4AF. The temperature range of this parameter is
0°F (0°C) to 54°F (30°C). The default value is 10°F (5.5°C).

6 Power-fin Parameters (continued)

PC Program Instructions

13

Offset DHW setpoint to end DHW demand

This parameter determines how far above the setpoint the
tank sensor (or inlet sensor if a tank thermostat is used)
temperature must go in order for the tank call for heat to end.
This setting can be changed by accessing parameter 4AG. The
temperature range of this parameter is 0°F (0°C) to 54°F
(30°C). The default value is 4°F (2°C). See also parameter
4AS and 4AT.

Outdoor air shutdown temp (Outdoor Air Shutdown)

When the outdoor air temperature rises above this point, the
control will inhibit all SH demands (DHW demands will still
be active). This parameter can be changed by accessing
parameter 4AH. The temperature range of this parameter is
32°F (0°C) to 122°F (50°C). The default value is 80°F
(26.5°C).

OA shutdown differential (Outdoor Air Shutdown
Differential)

This is the number of degrees below parameter 4AH the
outdoor air temperature must go before the boiler will
respond to an SH demand again. This parameter can be
changed by accessing parameter 4AI. The temperature range
of this parameter is 0°F (0°C) to 90°F (50°C). The default
value is 10°F (5.5°C).

Shift OA reset curve (Shift Outdoor Air Reset)

The Shift Heat Curve shifts the actual setpoint above or below
the calculated setpoint by the number of degrees in this
parameter. This parameter can be changed by accessing
parameter 4AJ. The temperature range of this parameter is

-27°F (-15°C) to 27°F (15°C). The default value is 0°F (0°C).
This feature will be active if this parameter is set to anything
other than 0°F (0°C).

Night setback temperature

Once the internal clock has been set correctly, the night
setback feature can be used to program a lower water
temperature setpoint (space heating on boilers, tank on water
heaters) during a certain part of each day of the week. This
parameter can be changed by accessing parameter 4AK. The
temperature range for this parameter is 32°F (0°C) to 140°F
(60°C). With a setting of 32°F (0°C) the feature is turned off.
The default value is 32°F (0°C).

SH cascade offset

When programmed for cascade operation, the Leader boiler
will use this value to determine how far above the setpoint the
controlled temperature must rise in order to end the space
heating call for heat. This setting can be changed by accessing
parameter 4AL. The temperature range of this parameter is
0°F (0°C) to 72°F (40°C). The default value is 10°F (5.5°C).

SH cascade differential

When programmed for cascade operation, the Leader boiler
will use this value to determine how far below the turn-off
temperature (Setpoint + Offset) the controlled temperature
must drop in order to start the space heating call for heat.
This setting can be changed by accessing parameter 4AM. The
temperature range of this parameter is 0°F (0°C) to 72°F
(40°C). The default value is 20°F (11°C).

User password (User Code)

This code allows the user to access and change a limited
number of control parameters via the display. To change the
code, parameter 4AN must be accessed. The default code is
0704 (July 4th).

SH anti-cycling time (Anti-Cycling Time)

Once the SH setpoint has been met, a set amount of time must
elapse before the control will fire the boiler again. This helps
prevent short cycling of the boiler. The control will inhibit
firing and “Anti-cycling” will be shown on the display, until
either this time has elapsed or the water temperature drops
below parameter 4AF. This parameter can be changed by
accessing parameter 4AO. The time range for this parameter
is 0 minutes to 40 minutes. The default value is 1 minute.

Max service time (Service Mode Delay)

By pressing the Pin button on the front of the display for
5 seconds, the control will be placed in service mode. This will
override all other heat demands. The service mode allows the
installer to set the unit to a fixed firing rate for the purpose of
combustion analysis. The delay sets the length of time the
heater will stay in the service mode if neither the Up or Down
keys have been pressed before going back to its original state.
This parameter can be changed by accessing parameter 4AP.
The time range of this parameter is 0 to 40 minutes. The
default value is 20 minutes.

Backlight time

This parameter sets the amount of time the backlight will stay
on after a button has been pressed on the display. This
parameter can be changed by accessing parameter 4AQ. The
time range of this parameter is 0 to 255 seconds. A setting of
0 will turn the backlight feature off and a setting of 255 will
leave the backlight on continuously (not recommended). The
default time is 60 seconds.

Celsius/Fahrenheit (Unit °C or °F)

The control can be configured to display temperatures in
either °C or °F. This parameter can be changed by accessing
parameter 4AR. For °C set the parameter to 0. For °F set the
parameter to 1. The default is °F.

6 Power-fin Parameters

14

PC Program Instructions

Time to switch between DHW and SH (SH/DHW
Switching Time)

This feature sets the length of time the control will stay in DHW
mode when a SH call has been received. After this time period has
expired the control will revert to SH mode. If a DHW call is still
active the timer will reset. After the time period has expired the
control will revert to DHW mode. This will continue back and
forth until one of the demands has been satisfied. This parameter
can be changed by accessing parameter 4AU. The time range of
this parameter is 10 minutes to 240 minutes. The default value is
30 minutes.

Boost function time (Boost Time)

This function will only work if the outdoor air sensor is connected.
The Boost Function Time sets the amount of time that must elapse
during an SH demand before the water temperature setpoint will
be increased. This parameter can be changed by accessing
parameter 4AV. The time range for this parameter is 1 minute to
60 minutes. The default value is 20 minutes.

Boost function temp increase (Boost Temperature)

This function will only work if the outdoor air sensor is connected.
If a SH demand lasts longer than the programmed time setting in
parameter 4AV, and there have been no DHW demands, the
control will increase the water temperature setpoint by the amount
in this parameter. If the SH demand continues through another
time period, the setpoint will be increased again. This will
continue until either the SH demand ends, a maximum of 20
increases has occurred, or the maximum user setpoint has been
reached. Once the SH demand has been satisfied the setpoint will
revert back to its calculated setting. The boost temperature can be
changed by accessing parameter 4AW. The temperature range of
this parameter is 0°F (0°C) to 45°F (25°C). The default value is 0°F
(0°C). This feature will be active if this parameter is set to
anything other than 0°F (0°C).

Outlet setpoint temp for direct DHW (DHW Boiler
Setpoint)

When a DHW call for heat from an indirect DHW tank
becomes active, the control will control the firing rate of the
boiler in order to maintain the outlet water temperature at
this setpoint. This parameter can be changed by accessing
parameter 4AX. The temperature range of this parameter is
32°F (0°C) to 261°F (127°C). The default value is 180°F
(82°C).

Max cascade outlet setpoint (Max Cascade
Setpoint)

This setting provides a target outlet temperature for all the
boilers in a cascade. Each boiler’s internal temperature
control program will attempt to drive its outlet temperature
to this setting. The Leader boiler may limit the modulation of
any boiler in the cascade in order to maintain the space
heating setpoint. Thus, this setting may be used as a limit on
the outlet temperature of all the boilers (including the Leader
boiler). This parameter can be adjusted by accessing
parameter 4AY. The temperature range for this setting is 32°F
(0°C) to 261°F (127°C). The default value is 215°F (102°C).

Cascade outlet setpoint offset DHW

When water heaters are connected in a cascade the value of
this parameter will be added to the tank setpoint and sent to
all of the water heaters as the setpoint to use for their internal
temperature control program. Each water heater will attempt
to drive its inlet temperature to this setting. The Leader water
heater may limit the modulation of any water heater in the
cascade in order to maintain the tank setpoint. Thus, this
value can be used to limit the temperature at the bottom of
the tank or wherever the water heater draws its water from.
This setting can be adjusted by accessing parameter 4AZ. The
temperature range of this offset is 0°F (0°C) to 36°F (20°C).
The default value is 27°F (15°C).

Tank setpoint temp

This setting is applied to either the tank sensor (when connected)
or the inlet sensor (water heaters only). On boilers, it is used to
start and stop the DHW call for heat. On water heaters, it is also
used as the target temperature for modulation. This setting can be
changed by accessing parameter 4AS. The temperature range is
60°F (15.5°C) to 190°F (87.5°C). The default setting 120°F (49°C).

Tank differential temp

This parameter determines how far below the tank setpoint the
tank sensor temperature (or inlet sensor temperature on water
heaters when a tank sensor is not connected) must go to start a
DHW call for heat. This setting can be adjusted by accessing
parameter 4AT. The temperature range is 0°F (0°C) to 18°F
(10°C). The default value is 6°F (3.5°C).

6 Power-fin Parameters (continued)

PC Program Instructions

Bypass valve setpoint

This parameter sets the target minimum temperature for the
condensing protection feature. This can be adjusted by accessing
parameter 4BA. The temperature range of this parameter is 32°F
(0°C) to 261°F (127°C). The default value is 140°F (60°C).

Config SH control (SH Control)

The Config SH Control parameter selects the method used to
control the modulation of the heater. This parameter can be
changed by accessing parameter 4CA. The allowable values
are 2 for cascade control, 4 for 0-10Vdc Building Management
System (BMS) control, or 6 for operation based on user
setpoint and the temperature of the selected controlling
sensor. If BMS control of a cascade is desired, set this
parameter to 2 and set BMS control (H3) to “active” using the
menu on the operator interface of the heater. If either 2 or 4
are selected, additional parameters may need to be adjusted.

BMS

If BMS has been selected in parameter 4CA or through the
operator interface panel on the heater, the control must know
how to use the 0-10Vdc signal. This can be either temperature
based or power based. This parameter can be changed by
accessing parameter 4CB. The allowable values for this
parameter are “0” for power or “2” for temperature. The
default value is 0. Parameters 4GA through 4GK may need to
be adjusted.

15

NOTICE

CONTINUOUS OPERATION AT AN INLET
TEMPERATURE BELOW 140°F (60°C) CAN
RESULT IN NON-WARRANTABLE
DAMAGE TO THE HEAT EXCHANGER.

Proportional band valve control/integration time valve
control

These parameters determine the responsiveness of the 3-way
bypass valve to the inlet temperature. These parameters should be
adjusted only when the 3-way bypass valve is reacting too slowly to
temperature changes or is continuously adjusting when the return
temperature is not changing very much. Parameter 4BB
determines how quickly the valve responds to a change in the inlet
temperature. The lower the value of this parameter the quicker it
will respond. Parameter 4BC determines how quickly the valve
will adjust to bring the inlet temperature to the desired setpoint
(4BA). The lower the value of this parameter the faster it will
adjust the position of the 3-way valve. The default values are 60°F
(33.5°C) and 40 seconds respectively.

Figure 6-6_Parameter Set 4C

Figure 6-5_Parameter Set 4B

On the tabs at the top of the window, click on the tab labeled
4C Boiler Config to set the parameters that enable Building
Management System (BMS) operation and determines the
controlling sensor, see FIG. 6-6.

On the tabs at the top of the window, click on the tab labeled 4B
Bypass Valve to set additional parameters for the condensing
protection feature, see FIG. 6-5. See also parameters 2A discussed
previously.

6 Power-fin Parameters

16

PC Program Instructions

Config cascade

When a heater is programmed for cascade control, the address
of each heater must be set to a different value. The Leader
heater will always be programmed with address 0. All other
heaters (and stand-alone heaters) must be given an address
from 1 to 7. The address can be adjusted by accessing
parameter 4CC. The adjustment range is 0 to 7. The default
value is 1.

Controlling sensor

This parameter selects which sensor the control will use to
regulate the boiler firing rate. This parameter is adjustable by
accessing parameter 4CH. The selections are “2” for outlet
sensor, which will regulate the firing rate based on the outlet
water temperature from the boiler, or “4” for inlet sensor
which will regulate the firing rate based on the inlet water
temperature to the boiler. If the outlet sensor is selected, and
the optional system supply sensor has been connected, the
control will regulate the firing rate based on system supply
sensor temperature. If the inlet sensor is selected and the
optional system return sensor is connected, the control will
regulate the firing rate based on the system return sensor. The
default sensor is the outlet sensor.

On the tabs at the top of the window, click on the tab labeled
4D Pump Delay to set the delay time for the boiler, system,
and DHW pumps (see FIG. 6-7).

SH pump delay after SH demand (Pump Delay SH
Pump)

This feature sets the length of time the boiler pump will run
after a SH demand has been satisfied. This parameter is
adjustable by accessing parameter 4DA. The time range for
this parameter is 0 minutes to 40 minutes. The default time is
30 seconds.

DHW pump delay (Pump Delay DHW Pump)

This feature sets the length of time the DHW pump (if
connected) will run after a DHW demand has been satisfied.
This parameter is adjustable by accessing parameter 4DB. The
time range for this parameter is 0 minutes to 40 minutes. The
default time is 30 seconds.

System pump delay (Pump Delay System Pump)

This feature sets the length of time the system pump (if
connected) will run after a SH demand has been satisfied. This
parameter is adjustable by accessing parameter 4DC. The time
range for this parameter is 0 minutes to 40 minutes. The
default time is 30 seconds.

To set the parameters for Service Notification, click on the tab
labeled 4E Notify Setup (see FIG. 6-8).

Figure 6-7_Parameter Set 4D

Figure 6-8_Parameter Set 4E

6 Power-fin Parameters (continued)

PC Program Instructions

No. of months for service reminder (Service
Notification in Months)

When the heater control determines that a scheduled service
is due based on days of installation, the heater display will
alternate the standard heater display text with the message
SERVICE DUE every 5 seconds. This parameter is adjustable
by accessing parameter 4EA. The time range for this
parameter is 0 months to 36 months. The default time is 12
months.

Running hours for service reminder (Service
Notification Running Hours)

When the heater control determines that a scheduled service
is due based on the hours of actual operation, the heater
display will alternate the standard heater display text with the
message SERVICE DUE every 5 seconds. This parameter is
adjustable by accessing parameter 4EB. The time range for
this parameter is 0 hours to 100,000 hours. The default time is
10,000 hours.

Burner cycles for service reminder (Service
Notification Boiler Cycles)

When the heater control determines that a scheduled service
is due based on the number of heater cycles, the heater display
will alternate the standard heater display text with the message
SERVICE DUE every 5 seconds. This parameter is adjustable
by accessing parameter 4EC. The range for this parameter is 0
cycles to 100,000 cycles. The default is 10,000 cycles.

To adjust the Outdoor Air Reset curve and the Ramp Delay,
click on the tab labeled 4F OA Reset Curve (see FIG. 6-9).

Figure 6-9_Parameter Set 4F

OA reset water temp at min outdoor temp (4FC)
(Maximum SH Setpoint)

When the outdoor air temperature drops to its minimum
setting (4FC), the water temperature setpoint will be at this
value. However, if the SH user setpoint (4AA) is lower, it will
override this setting (see FIG. 6-10). This parameter can be
changed by accessing parameter 4FA. The temperature range
of this parameter is 32°F (0°C) to 248°F (120°C). The default
value is 180°F (82°C).

OA reset water temp at max outdoor temp (4FD)
(Minimum SH Setpoint)

When the outdoor air temperature rises to or above its
maximum setting (4FD), the water temperature setpoint will
be at this value. This parameter can be changed by accessing
parameter 4FB. The temperature range of this parameter is
32°F (0°C) to 248°F (120°C). The default value is 70°F (21°C).

OA reset outdoor temp at max water temp (4FA)
(Minimum Air Temperature)

When the outdoor air temperature drops to this point, the
water temperature setpoint will be at its maximum setting (if
not overridden by the SH user setpoint). This parameter can
be changed by accessing parameter 4FC. The temperature
range of this parameter is -22°F (-30°C) to 86°F (30°C). The
default value is 25°F (-4°C).

OA reset outdoor temp at min water temp (4FB)
(Maximum Air Temperature)

When the outdoor air temperature rises to or above this point,
the water temperature will be at its minimum setpoint. This
parameter can be changed by accessing parameter 4FD. The
temperature range of this parameter is -22°F (-30°C) to 86°F
(30°C). The default value is 70°F (21°C).

17

6 Power-fin Parameters

18

PC Program Instructions

Figure 6-10_Outdoor Air Reset Curve

When active, the ramp delay limits the boiler firing rate when a
space heating cycle has started. There are six (6) limiting steps
used to limit temperature overshoot and short cycles (see FIG. 6-11).
This feature can be turned on or off depending on the installation.
The default condition for this feature is disabled. It should only be
needed when the flow through the heat exchanger is very low or
the flow in the primary loop can be less than the flow in the
secondary loop. The time for each of the six (6) ramp delays as
well as the power level for each of the six (6) ramp delays are
adjustable. This process can also work in reverse when the boiler
shuts off. By setting this parameter to “step up/down”, the timer
for step 6 will start when the burner shuts off. Once the timer for
step 6 expires, it will start the timer for step 5. Once this timer
expires, it will start the timer for step 4, and so on. If the burner
turns back on before the timer for step 2 has expired, the control
will use the max firing rate of the current step, instead of the max
firing rate of step 1. This way, the heater can start up at a higher
rate when the off time is short.

Ramp delay

This parameter configures the ramp delay feature from off to on.
This parameter can be changed by accessing parameter 4FE.

The control range of this parameter is 0 = Off, 1 = Ramp Up
Only, and 2 = Ramp Up and Ramp Down. The default is 0.

Ramp delay time period x

Parameters 4FF through 4FK determine the time of each step
during ramp delay, starting with step 1 through step 6
respectively. The time range for each ramp delay is adjustable
from 1 minute to 40 minutes with the total of all six (6) ramp
delays not to exceed 109 minutes. The default time for
ramp 1 is 2 minutes. The default time for the rest of the ramps
is 1 minute.

Ramp delay max power period x

The power range for each ramp delay is adjustable from 0 to

100. The defaults for each ramp delay is ramp delay 1 = 50%,
ramp delay 2 = 80%, ramp delay 3 = 100%, ramp delay 4 =
100%, ramp delay 5 = 100%, ramp delay 6 = 100%. The
locations for these parameters are 4FL through 4FQ. Note
that the power limit for step 6 will apply throughout the
remainder of the call for heat.

Figure 6-11_Ramp Delay

19

Building Management System control

To adjust the Building Management System control
parameters, click on the tab marked 4G BMS settings, see
FIG. 6-12.

Figure 6-12_BMS Settings

6 Power-fin Parameters (continued)

BMS setpoint at min voltage (4GC)

If parameter 4CB is set to 2, the control must know the
minimum setpoint temperature to use. This can be changed
by accessing parameter 4GA. The temperature range for this
parameter is 32°F (0°C) to 248°F (120°C). The default value
is 70°F (21°C).

BMS setpoint at max voltage (4GD)

If parameter 4CB is set to 2, the control must know the
maximum setpoint temperature to use. This can be changed
by accessing parameter 4GB. The temperature range for this
parameter is 32°F (0°C) to 248°F (120°C). The default value
is 180°F (82°C).

BMS voltage at low setpoint (4GA)

If parameter 4CB is set to 2, the control must know the voltage
corresponding to the minimum setpoint. This can be
adjusted by accessing parameter 4GC. The voltage range for
this parameter is 0Vdc to 10Vdc. The default value is 2Vdc.

BMS voltage at high setpoint (4GB)

If parameter 4CB is set to 2, the control must know the voltage
corresponding to the maximum setpoint. This can be
adjusted by accessing parameter 4GD. The voltage range for
this parameter is 0Vdc to 10Vdc. The default value is 10Vdc.

Min BMS voltage to start demand

If parameter 4GK is set to 1, the heat demand will be
generated by the voltage present on the 0 - 10Vdc input.
Parameter 4GE determines the voltage at which the SMART
SYSTEM control initiates a head demand. The range for this
parameter is 0Vdc to 10Vdc. The default value is 2Vdc.

Differential to stop BMS demand

If parameter 4GK is set to 1, the heat demand will be
generated by the voltage present on the 0 - 10Vdc input.
Parameter 4GF determines how far below the starting voltage
(parameter 4GE) the voltage must drop before the heat
demand ends. The range for this parameter is 0Vdc to 10Vdc.
The default value is 1Vdc.

BMS power at min voltage (4GI)

If parameter 4CB is set to 0, the control must know what
minimum power level to use. This can be changed by
accessing parameter 4GG. The range for this parameter is
20% to 100%. The default value is 20%.

BMS power at max voltage (4GJ)

If parameter 4CB is set to 0, the control must know the
maximum power level to use. This can be changed by
accessing parameter 4GH. The range for this parameter is
20% to 100%. The default value is 100%.

BMS voltage at min power (4GG)

If parameter 4CB is set to 0, the control must know the voltage
corresponding to the minimum power. This can be changed
by accessing parameter 4GI. The range for this parameter is
0Vdc to 10Vdc. The default value is 2Vdc.

BMS voltage at max power (4GH)

If parameter 4CB is set to 0, the control must know the voltage
corresponding to the maximum power. This can be changed
by accessing parameter 4GJ. The range for this parameter is
0Vdc to 10Vdc. The default value is 10Vdc.

BMS demand enable [1] voltage [0]

If parameter 4CA is set to 4 (BMS control), the heat demand
can be activated by either the voltage on the 0 - 10Vdc input,
or by closing the enable contacts (boiler) or tank thermostat
contacts (water heater). To choose the voltage input, set
parameter 4GK to 0. To choose the enable / tank thermostat
input, set parameter 4GK to 1. The default value is 0.

PC Program Instructions

7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters

20

PC Program Instructions

Parameter information screens

By accessing the Parameter Information Screens, the installer
can view all of the SMART SYSTEM parameters. The installer
can also change certain specific parameters to fine tune the
operation of the boiler to the installation.

To access the parameter list, click on the Parameters button
along the top of the Main Screen window (FIG. 7-1). Next
click on Retrieve Parameters from Controller in the pull
down menu (see FIG. 7-1). This will upload the current
parameters in the SMART SYSTEM to the PC.

Figure 7-1_Parameters Pull-Down Menu Screen

Adjustable parameters are located in:

Set 1: System Setup

Set 2: Functional Data

Set 4: Menu Values

While many parameters are viewable in each set, only select
parameters are adjustable. To make an adjustment to a
parameter, select the parameter to be changed from the
appropriate set. Click on the box next to the parameter and
type in the value for the parameter.

Once an adjustment has been made to a parameter, it must be
programmed into the SMART SYSTEM. On the Parameter
pull down menu, click on the Program Parameters into
Control button. This will bring up another pull down menu.
If a parameter was changed in just one set, select the set from
the menu and click on it. If changes were made in multiple
sets, select the Store Parameter Set 0-4 from the menu and
click on it. This will program the new parameters into the
SMART SYSTEM. If the parameters are based on a parameter
set from a different model, they may not be compatible with
this model. In that case, the program will display a message to
let you know. You may compare parameter 1AR in the
SMART SYSTEM control, and in the new parameter file, to
determine if they are compatible.

While the programming is taking place, the SMART SYSTEM
will go into a lockout mode. It will require that the
Enter/Reset button on the display be pressed after the
programming has been completed before the unit will be
allowed to operate.

21

PC Program Instructions

7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters (continued)

Changeable parameters

The following is a brief discussion of the changeable
parameters, their default settings, the range of adjustment,
and their location. The title for the parameters may differ
slightly from the PC to the boiler display. To prevent
confusion, the boiler display version will be listed in
parenthesis.

Set 1: System setup

Set 1 is accessed by clicking on Parameters at the top of the
Main Screen window (FIG. 7-1), then on Set 1: Control Setup
on the pull-down menu.

Ramp delay settings

When active, the ramp delay limits the boiler firing rate when
a SH cycle has started. There are 6 limiting steps used to limit
temperature overshoot and short cycles (see FIG. 7-2). This
feature can be turned on or off depending on the installation.
The default condition for this feature is disabled. It should
only be needed when the flow through the heat exchanger is
very low, or the flow in the primary loop can be less than the
flow in the secondary loop. The time for each of the 6 ramp
delays as well as the power level for each of the 6 ramp delays
are adjustable. The time range for each ramp delay is
adjustable from 1 minute to 40 minutes with the total of all 6
ramp delays not to exceed 109 minutes. The default time for
each ramp delay is 1 minute. This process can also work in
reverse when the boiler shuts off. After shutting off, the max
firing rate will be limited to the ramp 6 limit for the period 6
time delay, then to the ramp 5 limit for the period 5 time
delay, and so forth. This step down feature overrides the step
up feature until the ramp up limit becomes higher than the
ramp down limit. To access the Ramp Delay settings, click on
the tab labeled 1D Ramp Delay (see FIG. 7-2).

Figure 7-2_Parameter Set 1D

The power range for each ramp delay is adjustable from 0 to

100. The defaults for each ramp delay is ramp delay 1= 50%,
ramp delay 2=80%, ramp delay 3=100%, ramp delay 4=100%,
ramp delay 5=100%, ramp delay 6=100% (FIG. 7-3). The
locations for these parameters are 1DG through 1DL. See
parameter 4FE (page 27 of this manual) to enable or disable
the ramp delay feature.

Figure 7-3_Ramp Delay Interval

22

PC Program Instructions

7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters

Set 2: Functional Data

Set 2 is accessed by clicking on Parameters at the top of the
Main Screen window, then clicking on Set 2: Functional Data
on the pull-down menu (FIG. 7-1, page 20).

Building Management System (BMS) control

Parameters 2BJ through 2BO sets the configuration for the
control when a 0-10Vdc BMS has been connected to the unit
and has been selected in parameter 4CA as the control input.
If BMS has been selected as the control input, then parameter
4CB selects how the control responds to the 0-10Vdc signal.
This can be based on either temperature or power level.
Parameters 2BJ and 2BK will set the temperature range if
temperature has been selected. Parameters 2BL through 2BO
will set the power levels if power control has been selected. To
access the BMS parameters, click on the tab labeled 2B
General Settings (see FIG. 7-4 below).

Figure 7-4_Parameter Set 2B

BMS setpoint corresponding with 0V

If temperature has been selected, the control must identify the
minimum temperature 0V relates to. This can be changed by
accessing parameter 2BJ. The temperature range for this
parameter is 32°F-190°F. The default value is 70°F.

BMS setpoint corresponding with 10V

If temperature has been selected, the control must identify the
maximum temperature 10Vdc relates to. This can be changed
by accessing parameter 2BK. The temperature range for this
parameter is 32°F-190°F. The default value is 180°F.

BMS power at min voltage (2BN)

If power has been selected, the control must identify the
minimum power level to be used. This can be changed by
accessing parameter 2BL. The range for this parameter is 20%
to 100%. The default value is 20%.

BMS power at max voltage (2BO)

If power has been selected, the control must identify the
maximum power level to be used. This can be changed by
accessing parameter 2BM. The range for this parameter is
20% to 100%. The default value is 100%.

BMS voltage at min power (2BL)

If power has been selected, the control must identify the
lowest voltage signal to be used. The control will relate this
signal to what the minimum power level will be. This can be
changed by accessing parameter 2BN. The range for this
parameter is 0 to 10. The default value is 1.

BMS voltage at max power (2BM)

If power has been selected, the control must identify the
highest voltage signal that will be used. The control will relate
this signal to what the maximum power level will be. This can
be changed by accessing parameter 2BO. The range for this
parameter is 0 to 10. The default value is 9.

Special pump delay functions

The parameters for special pump delay functions are accessed
by clicking on the tab labeled 2E Pump Setup (see FIG. 7-5,
page 23).

23

PC Program Instructions

7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters (continued)

Parameter 2EB sets the pump delay time for the boiler pump
after an over-temperature condition. This time is adjustable
from 0 minutes to 40 minutes. The default time is 2 minutes.

To prevent jamming, if the boiler pump or DHW pump have
not been active in a 24 hour period, the SMART SYSTEM will
activate the appropriate pump for a programmed time. The
boiler pump time can be changed by accessing parameter
2EC. This time is adjustable from 0 minutes to 40 minutes.
The default time is 20 seconds. The DHW pump time can be
changed by accessing parameter 2ED. This time is adjustable
from 0 minutes to 40 minutes. The default time is 20 seconds.

Set 4: Menu values

Set 4 contains parameters that can be accessed from the boiler
display. The parameters in this set control the basic operation
of the boiler. To access these parameters, click on Parameters
at the top of the Main Screen window (FIG. 7-1, page 20),
then click on Set 4: Menu Values on the pull-down menu
(FIG. 7-6).

Figure 7-5_Parameter Set 2E

Figure 7-6_Parameter Set 4A

Space Heating (SH) user setpoint (SH setpoint)

The SH User Setpoint sets the water temperature setpoint for
fixed operation or the maximum temperature setpoint when
the outdoor air sensor is used. This parameter can be changed
by accessing parameter 4AA. The temperature range of this
parameter is 50°F to 190°F. The default value is 125°F.

SH min user setpoint (minimum SH setpoint)

The SH Minimum User Setpoint sets the minimum water
temperature setpoint that can be used for space heating
operation. The user or installer will not be able to program the
control with a lower SH setpoint. This parameter can be
changed by accessing parameter 4AB. The temperature range
of this parameter is 0°F to 190°F. The default value is 70°F.

SH max user setpoint (maximum SH setpoint)

The SH Maximum User Setpoint sets the maximum water
temperature setpoint that can be used for space heating. The
user or installer will not be able to program the control with a
higher SH setpoint. This parameter can be changed by
accessing parameter 4AC. The temperature range of this
parameter is 0°F to 190°F. The default value is 190°F.

24

PC Program Instructions

7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters

SH turn-off differential (Offset SH)

The SH Turn-off Differential sets how many degrees above
setpoint the temperature has to go before the boiler will shut
off. This parameter can be changed by accessing parameter
4AD. The temperature range of this parameter is 0°F to 86°F.
The default value is 10°F.

SH off-on differential (Differential SH)

The SH Off-on Differential sets how many degrees below the
turn-off temperature the temperature has to go before the
boiler will turn on. This parameter can be changed by
accessing parameter 4AE. The temperature range of this
parameter is 0°F to 86°F. The default value is 20°F.

Drop of inlet temp before ending anti-cycling
(Return Temperature Differential for Ending Anti­cycling)

The control will bypass the anti-cycling time if the inlet water
temperature drops too much. The control will use the inlet
water temperature when it shuts off as the starting point. If
the temperature drops this amount below the starting
temperature, the control will abort anti-cycling and allow the
boiler to fire. This parameter can be changed by accessing
parameter 4AF. The temperature range of this parameter is
0°F to 86°F. The default value is 10°F.

Outdoor air shutdown temp (Outdoor Air Shutdown)

When the outdoor air temperature rises above this point, the
control will inhibit all SH demands (DHW demands will still
be active). This parameter can be changed by accessing
parameter 4AH. The temperature range of this parameter is
0°F to 120°F. The default value is 80°F.

OA shutdown differential (Outdoor Air Shutdown
Differential)

This is the number of degrees below parameter 4AH the
outdoor air temperature must go before the boiler will again
respond to an SH demand. This parameter can be changed by
accessing parameter 4AI. The temperature range of this
parameter is 0°F to 90°F. The default value is 10°F.

Shift OA reset curve (Shift Air Reset)

The Shift Heat Curve shifts the actual setpoint above or below
the calculated setpoint by the number of degrees in this
parameter. This parameter can be changed by accessing
parameter 4AJ. The temperature range of this parameter is

-27°F to 27°F. The default value is 0°F. This feature will be
active if this parameter is set to anything other than 0°F.

Night setback temperature

Once the internal clock has been set correctly, the night
setback feature can be used to program a lower water
temperature setpoint for space heating. This parameter can be
changed by accessing parameter 4AK. The temperature range
for this parameter is 32°F to 140°F. With a setting of 32°F the
feature is turned off. The default value will be 32°F.

Code to access user parameters (User Code)

This code allows the user to access and change a limited
number of control parameters via the display. To change the
code, parameter 4AN must be accessed. The default code is
0704 (July 4th).

SH anti-cycling time (Anti-Cycling Time)

Once a SH demand has been satisfied, a set amount of time
must elapse before the control will respond to a new SH
demand. This helps prevent short cycling of the boiler. The
control will inhibit the new heat demand and “Anti-cycling”
will be shown on the display, until either this time has elapsed
or the water temperature drops below parameter 4AF. This
parameter can be changed by accessing parameter 4AO. The
time range for this parameter is 0 minutes to 40 minutes. The
default value is 1 minute.

Max service time (Service Mode Delay)

By pressing the pin button on the front of the display for 5
seconds, the control will be placed in service mode. This will
override all other heat demands. The service mode allows the
installer to set the unit to a fixed firing rate for the purpose of
combustion analysis. The delay sets the length of time the
boiler will stay in the service mode if no keys have been
pressed before going back to its original state. This parameter
can be changed by accessing parameter 4AP. The time range
of this parameter is 0 minutes to 40 minutes. The default
value is 20 minutes.

Backlight time

This feature sets the amount of time the backlight will stay on
after a button has been pressed on the display. This parameter
can be changed by accessing parameter 4AQ. The time range
of this parameter is 0 seconds to 255 seconds. A setting of 0
will turn the backlight feature off and a setting of 255 will
leave the backlight on continuously. The default time is 60
seconds.

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Parameters (continued)

Celsius/Fahrenheit (Unit °C or °F)

The control can be configured to display temperatures in
either °C or °F. This parameter can be changed by accessing
parameter 4AR. For °C set the parameter to 0. For °F set the
parameter to 1. The default is °F.

Tank differential temp

This parameter determines how far below the tank setpoint
the tank sensor temperature (or inlet sensor temperature on
water heaters when a tank sensor is not connected) must go to
start a DHW call for heat. This setting can be adjusted by
accessing parameter 4AT. The temperature range is 0°F (0°C)
to 18°F (10°C). The default value is 6°F (3.5°C).

Time to switch between DHW and SH (SH/DHW
Switching Time)

This feature sets the length of time the control will stay in
DHW mode when a SH call has been received. After this time
period has expired the control will revert to SH mode. If a
DHW call is still active the timer will reset. After the time
period has expired the control will revert to DHW mode. This
will continue back and forth until one of the demands has
been satisfied. This parameter can be changed by accessing
parameter 4AU. The time range of this parameter is 10
minutes to 240 minutes. The default value is 30 minutes.

Boost function time (Boost Time)

This function will only work if the outdoor air sensor is
connected. The Boost Function Time sets the amount of time
that must elapse during an SH demand before the water
temperature setpoint will be increased. This parameter can be
changed by accessing parameter 4AV. The time range for this
parameter is 1 minute to 60 minutes. The default value is 20
minutes.

Boost function temp increase (Boost Temperature)

This function will only work if the outdoor air sensor is
connected. If a SH demand lasts longer than the programmed
time setting in parameter 4AV, and there have been no DHW
demands, the control will increase the water temperature
setpoint by the amount in this parameter. If the SH demand
continues through another time period, the setpoint will be
increased again. This will continue until either the SH
demand ends, a maximum of 20 increases has occurred, or the
maximum user setpoint has been reached. Once the SH
demand has been satisfied the setpoint will revert back to its
calculated setting. The boost temperature can be changed by
accessing parameter 4AW. The temperature range of this
parameter is 0°F to 45°F. The default value is 0°F. This feature
will be active if this parameter is set to anything other than
0°F.

Outlet setpoint temp for direct DHW (DHW Boiler
Setpoint

When a DHW call for heat becomes active, the control will
control the firing rate of the boiler in order to maintain the
outlet water temperature at this setpoint. This parameter can
be changed by accessing parameter 4AX. The temperature
range of this parameter is 50°F to 190°F. The default value is
180°F. On the tabs at the top of the window (FIG. 7-7), click
on the tab labeled 4C Boiler Config to set the parameters that
enable BMS operation and determine the controlling sensor
(see FIG. 7-7 below).

Config SH control (SH Control)

The Config SH Control parameter selects the method used to
control the modulation of the boiler. This parameter can be
changed by accessing parameter 4CA. The allowable values
are 2 for cascade control, 4 for 0-10Vdc BMS control, or 6 for
operation based on user setpoint and the temperature of the
selected controlling sensor. If 2 is selected for cascade control,
additional parameters will have to be adjusted. If 4 is selected
for 0-10Vdc BMS control, additional parameters may need to
be adjusted.

BMS

If BMS has been selected in parameter 4CA, the control must
know how to use the 0-10Vdc signal. This can be either
temperature based or power based. This parameter can be
changed by accessing parameter 4CB. The allowable values for
this parameter are “0” for power or “2” for temperature. The
default value is 0. Parameters 2BJ through 2BO may need to
be adjusted.

Cascade

If Cascade has been selected in parameter 4CA, each boiler in
the cascade must be given a unique address. This address can

Figure 7-7_Parameter Set 4C

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7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters

be changed by accessing parameter 4CC. The Leader boiler
(to which the thermostat/zone control, system sensor, and
system pump (if controlled by the boiler) are connected) must
be set to address 0. All the Member boilers must be given an
address from 1 to 7. The range of this parameter is 0 to 7. The
default value is 1.

Cascade Max SH step power based (SH setpoint)

When the control is programmed as a Cascade Leader
(address 0), the cascade control will modulate the boilers in
order to maintain the system sensor temperature at this
setpoint. This parameter can be changed by accessing
parameter 4AY. The temperature range of this parameter is
32°F to 212°F. The default value is 125°F.

Controlling sensor

This parameter selects which sensor the control will use to
regulate the boiler firing rate. This parameter is adjustable by
accessing parameter 4CH. The selections are “2” for outlet
sensor, which will regulate the firing rate based on the outlet
water temperature from the boiler, or “4” for inlet sensor
which will regulate the firing rate based on the inlet water
temperature to the boiler. If the outlet sensor is selected, and
the optional system sensor has been connected, the control
will regulate the firing rate based on system sensor
temperature. The default sensor is the outlet sensor. The inlet
sensor may not be used if the control configuration is set to
cascade.

On the tabs at the top of the window, click on the tab labeled
4D Pump Delay to set the delay time for the boiler, system,
and DHW pumps (see FIG. 7-8 below).

Figure 7-8_Parameter Set 4D

SH pump delay after SH demand (Pump Delay SH
Pump)

This feature sets the length of time the boiler pump will run
after a SH demand has been satisfied. This parameter is
adjustable by accessing parameter 4DA. The time range for
this parameter is 0 minutes to 40 minutes. The default time is
30 seconds.

DHW pump delay (Pump Delay DHW Pump)

This feature sets the length of time that the DHW pump (if
connected) will run after a DHW demand has been satisfied.
This parameter is adjustable by accessing parameter 4DB. The
time range for this parameter is 0 minutes to 40 minutes. The
default time is 30 seconds.

System pump delay (Pump Delay System Pump)

This feature sets the length of time the system pump (if
connected) will run after a SH demand has been satisfied. This
parameter is adjustable by accessing parameter 4DC. The time
range for this parameter is 0 minutes to 40 minutes. The
default time is 30 seconds.

To set the parameters for Service Notification, click on the tab
labeled 4E Notify Setup (see FIG. 7-9 below).

Figure 7-9_Parameter Set 4E

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7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters (continued)

Figure 7-10_Parameter Set 4F

OA reset water temp at min outdoor temp (4FC)
(Maximum SH Setpoint)

When the outdoor air temperature drops to or below its
minimum setting (4FC), the water temperature setpoint will
be at this value. However, if the SH user setpoint (4AA) is
lower, it will override this setting. This parameter can be
changed by accessing parameter 4FA. The temperature range
of this parameter is 0°F to 190°F. The default value is 180°F
(FIG. 7-11).

OA reset water temp at max outdoor temp (4FD)
(Minimum SH Setpoint)

When the outdoor air temperature rises to or above its
maximum setting (4FD), the water temperature setpoint will
be at this value. This parameter can be changed by accessing
parameter 4FB. The temperature range of this parameter is
0°F to 190°F. The default value is 70°F (FIG. 7-11).

OA reset outdoor temp at max water temp (4FA)
(Minimum Air Temperature)

When the outdoor air temperature drops to or below this
point, the water temperature setpoint will be at its maximum
setting (if not overridden by the SH user setpoint). This
parameter can be changed by accessing parameter 4FC. The
temperature range of this parameter is -30°F to 90°F. The
default value is 25°F (FIG. 7-11).

OA reset outdoor temp at min water temp (4FB)
(Maximum Air Temperature)

When the outdoor air temperature rises to or above this point,
the water temperature will be at its minimum setpoint. This
parameter can be changed by accessing parameter 4FD. The
temperature range of this parameter is -30°F to 90°F. The
default value is 70°F (FIG. 7-11).

Ramp delay

This parameter configures the ramp delay feature from off to
on. This parameter can be changed by accessing parameter
4FE (FIG. 7-10). The control range of this parameter is 0 =
Off, 1 = Ramp Up Only, and 2 = Ramp Up and Ramp Down.
The default is 0.

No. of months for service reminder (Service
Notification in Months)

When the boiler control determines that a scheduled service is
due based on days of installation, the boiler display will
alternate the standard boiler display text with the message
SERVICE DUE every 5 seconds. This parameter is adjustable
by accessing parameter 4EA. The time range for this
parameter is 0 months to 36 months. The default time is 12
months.

Running hours for service reminder (Service
Notification Running Hours)

When the boiler control determines that a scheduled service is
due based on the hours of actual operation, the boiler display
will alternate the standard boiler display text with the message
SERVICE DUE every 5 seconds. This parameter is adjustable
by accessing parameter 4EB. The time range for this
parameter is 0 hours to 100,000 hours. The default time is
10,000 hours.

Burner cycles for service reminder (Service
Notification Boiler Cycles)

When the boiler control determines that a scheduled service is
due based on the number of boiler cycles, the boiler display
will alternate the standard boiler display text with the message
SERVICE DUE every 5 seconds. This parameter is adjustable
by accessing parameter 4EC. The range for this parameter is 0
cycles to 100,000 cycles. The default is 10,000 cycles.

To adjust the Outdoor Air Reset curve, click on the tab labeled
4F OA Reset Curve (see FIG. 7-10 below).

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7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters

Figure 7-11_Outdoor Air Reset Curve

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7 Knight, Knight XL, Knight Wall Mount, and Armor

Parameters (continued)

Figure 7-12_Save Parameter File Window

Storing parameters on your PC

Once you have customized the parameters for a particular
heater, you can store the new settings on your PC. This will
allow you to restore these settings should you have to replace
the SMART SYSTEM control, or allow you to load these
settings into another heater at a later date.

The settings are stored as a data file. To save a file, click on

Parameters at the top of the screen, then on Save data file to
disk on the bottom of the pull-down menu (see FIG. 7-1 on

page 20). A new window will appear (FIG. 7-12). On the top
left side it shows the drive on which it will save the file. Below
that is the directory it will use. These may be changed to any
drive and folder you wish (for instance, a USB flash drive). At
the right side is a list of the default data files. At the bottom is
a field for entering the file name you wish to use. Note that
the extension for this file is .pil. Make sure that you DO NOT
overwrite the extension when entering the file name. Yo u

MUST NOT use any of the default file names shown in the
field on the right side of the window. This could overwrite
that default file! If you are updating a file, and want to

overwrite the old one, you may scroll down to that file name
and click on it, instead of having to type it into the field at the
bottom of the window. Click on the OK button to save the
file. A message will appear confirming that the file was saved.
Note that the new file name appears in the lower right-hand
corner of the SMART SYSTEM PC program window.

Loading stored parameters from the PC

To retrieve a set of parameters that had been stored
previously, click on Parameters at the top of the screen, then
on Get data file from disk (see FIG. 7-1 on page 20). A new
window will appear (FIG. 7-13). On the left top corner, select
the drive on which the data file is stored, followed by the
correct folder. The list of data files in that folder will be shown
on the right. Click on the data file you wish to obtain. That
file name will appear in the field at the bottom of the window.
Click on the OK button. Note that this file name appears in
the lower right-hand corner of the SMART SYSTEM PC
window.

Figure 7-13_Get Parameter File Window

8 Notes

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PC Program Instructions

31

8 Notes

PC Program Instructions

SM-PCP-Revision B reflects the update of “Tank
Differential” temperature range p14, the addition of
“Tank Differential” paragraph into KB section p25,
the update of image 7-6 pg23, the update of “USB
Installation” section pg3, and clarification of “Power­fin only” specifications on pg 5, 7, and 9.

Printed in the USA 04/10