Lochinvar Copper-fin II 402 Guide

User’s Information Manual
Models: 402 - 2072
If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or
loss of life.
This appliance MUST NOT be installed in any location where
gasoline or flammable vapors are likely to be present.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in your
building.
• Immediately call your gas supplier from a near by phone.
Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
• Installation and service must be performed by a qualified
installer, service agency, or the gas supplier.
WARNING
Save this manual for future reference.
CFX-CHX-USER_100161847_2000001379_Rev C

2
Hazard definitions
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or
to important information concerning the life of the product.
DANGER
WARNING
CAUTION
CAUTION
NOTICE
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
related to personal injury or property damage.
Contents
HAZARD DEFINITIONS .................................................... 2
PLEASE READ BEFORE PROCEEDING ........................ 3
1. PREVENT COMBUSTION AIR CONTAMINATION..... 4
2. MAINTENANCE SCHEDULE....................................... 5
Maintenance Procedures................................................... 6
Appliance Must Be Serviced and Maintained.............. 6
Check Appliance Area.................................................. 6
Check Pressure Temperature Gauge........................... 6
Check Vent Piping........................................................ 6
Check Air Piping........................................................... 6
Check Relief Valve....................................................... 6
Test Low Water Cutoff (if installed).............................. 7
Reset Button (low water cutoff).................................... 7
Check Appliance Piping (gas and water) ..................... 7
Operate Relief Valve .................................................... 7
Shut Appliance Down................................................... 7
3. OPERATING INSTRUCTIONS..................................... 8
4. SMART SYSTEM CONTROL MODULE
Copper-fin II Control Module.............................................. 9
Access Modes.................................................................. 10
Saving Parameters........................................................... 10
Viewable and Changeable Control Parameters.......... 10-12
Status Display Screens............................................... 13-15
Revision Notes.................................................. Back Cover

Please read before proceeding
3
NOTICE This is a gas appliance and should be
installed by a licensed electrician and/or
certified gas supplier. Service must be
performed by a qualified service installer,
service agency or the gas supplier.
WARNING If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage,
personal injury, or death.
This appliance MUST NOT be
installed in any location where gasoline
or flammable vapors are likely to be
present, unless the installation is such
to eliminate the probable ignition of
gasoline or flammable vapors.
What to do if you smell gas –
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbors
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency, or the gas supplier.
Warranty –
Factory warranty (shipped with unit) does not apply to
units improperly installed or improperly operated.
Experience has shown that improper installation or system
design, rather than faulty equipment, is the cause of most
operating problems.
1. Excessive water hardness causing a lime/scale build-up
in the copper tube is not the fault of the equipment
and is not covered under the manufacturer’s warranty
(see Water Treatment and Water Chemistry in the
Copper-fin II Installation and Operation Manual).
2. Excessive pitting and erosion on the inside of the
copper tube may be caused by too much water velocity
through the tubes and is not covered by the
manufacturer’s warranty (see Boiler Flow Rates and
Temperature Rise for flow requirements in the Copper-fin
II Installation and Operation Manual).
Checking equipment –
Upon receiving equipment, check for signs of shipping
damage. Pay particular attention to parts accompanying the
appliance which may show signs of being hit or otherwise
being mishandled. Verify total number of pieces shown on
the packing slip with those actually received. In case there is
damage or a shortage, immediately notify the carrier.
Do not use this appliance if any part has been under water.
The possible damage to a flooded appliance can be extensive
and present numerous safety hazards. Any appliance that
has been under water must be replaced.
WARNING Improper installation, adjustment,
alteration, service or maintenance can
cause injury or property damage. Refer
to this manual for assistance or additional
information, consult a qualified installer,
service agency or the gas supplier.
Owner warning –
The information contained in this manual is intended for use
by qualified professional installers, service technicians, or gas
suppliers. Consult your local expert for proper installation
or service procedures.
NOTICE Consult and follow all local Building and
Fire Regulations and other Safety Codes that
apply to this installation. Consult a local gas
utility company to authorize and inspect all
gas and flue connections.
Your conventionally vented gas appliance must have a supply
of fresh air circulating around it during burner operation for
proper gas combustion and proper venting.
WARNING Should overheating occur or the gas supply
fail to shut off, do not turn off or disconnect
the electrical supply to the pump. Instead,
turn off the manual gas control valve to
the appliance at a location external to the
appliance.
Prevention of freezing –
Heat exchangers and headers damaged by freezing are not
covered by warranty.
See Section 6, Startup - Freeze Protection in the Copper-fin II
Installation and Operation for more information.
User’s Information Manual

1 Prevent combustion air contamination
4
If the boiler combustion air inlet is located
in a laundry room or pool facility, for
example, these areas will always contain
hazardous contaminants.
To prevent the potential of severe
personal injury or death, check for areas
and products listed in Table 1A before
installing the boiler or air inlet piping.
If contaminants are found, you MUST:
• Remove contaminants permanently.
—OR—
• Relocate air inlet and vent
terminations to other areas.
WARNING
WARNING
Products to avoid:
Spray cans containing chloro/fluorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
found in household laundry rooms
Adhesives used to fasten building products and other similar
products
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Remodeling areas
Garages with workshops
Table 1A Corrosive Contaminants and Sources
WARNING If the boiler combustion air inlet is located
in any area likely to cause contamination,
or if products which would contaminate
the air cannot be removed, you must have
the combustion air and vent re-piped
and terminated to another location.
Contaminated combustion air will damage
the boiler, resulting in possible severe
personal injury, death, or substantial
property damage.
Pool and laundry products and common household
and hobby products often contain fluorine or chlorine
compounds. When these chemicals pass through the boiler,
they can form strong acids. The acid can eat through the
boiler wall, causing serious damage and presenting a possible
threat of flue gas spillage or boiler water leakage into the
building.
Please read the information listed in Table 1A. If
contaminating chemicals will be present near the location of
the boiler combustion air inlet, have your installer pipe the
boiler combustion air and vent to another location, per the
Copper-fin II Installation and Operation Manual.
User’s Information Manual

User’s Information Manual
2 Maintenance schedule
5
Service technician
General:
• Address reported problems
• Inspect interior; clean and vacuum if
necessary;
• Check for leaks (water, gas, flue,
condensate)
• Examine venting system
•Check system water pressure/system
piping/expansion tank
• Check fill water meter
• Test boiler water. When test indicates,
cleansystemwaterwithapprovedsystem
restorer following manufacturer’s
information.
• Check control settings
•Check igniter
• Check wiring and connections
• Check flue gas passageways
• Flame inspection (stable, uniform)
•Inspect and clean the burner
• Check manifold gas pressure
• Perform start-up checkout and
performance verification per Section 6
intheCopper-finIIInstallationandOperation
Manual
If combustion or performance
indicate need:
• Clean heat exchanger with a stiff bristle
brush
•Remove and clean burners using
water. Dry before re-assembling.
•Cleanthe blowerwheel witha brushand
vacuum. Donotletdirtfromcleaningget
pulled into the blower.
Owner maintenance
(see pages 6 - 7 for detailed instructions)
Daily
• Check boiler area
•Check pressure/temperature
gauge
Monthly
• Check vent piping
• Check air piping
• Check relief valve
• Replace combustion air filter
Note: More frequent replacement
may be necessary in dirty
environments.
Periodically • Test low water cutoff (if used)
• Reset button (low water cutoff)
Every
6 months
•Check boiler piping (gas and
water) for leaks
• Operate relief valve
End
of season
months
•Shut boiler down (unless boiler
used for domestic hot water)
WARNING Follow the maintenance procedures given throughout this manual. Failure to perform the service and
maintenance or follow the directions in this manual could result in damage to the boiler or system,
resulting in severe personal injury, death, or substantial property damage.
ANNUAL START-UP

2 Maintenance schedule
6
Maintenance procedures
Appliance must be serviced and maintained
WARNING The appliance must be inspected and started
annually at the beginning of the heating
season by a qualified service technician.
In addition, the maintenance and care of
the appliance designated on page 5 of this
manual and explained on pages 6 and 7 must
be performed to assure maximum appliance
efficiency and reliability. Failure to service
and maintain the appliance and system could
result in equipment failure, causing possible
severe personal injury, death, or substantial
property damage.
NOTICE The following information provides detailed
instructions for completing the maintenance
items listed in the maintenance schedule on
page 5. In addition to this maintenance, the
appliance must be serviced and started up
at the beginning of each heating season by a
qualified service technician.
Check appliance area
WARNING To prevent potential of severe personal
injury, death, or substantial property
damage, eliminate all materials discussed
below from the boiler/water heater vicinity
and the vicinity of the boiler/water heater
combustion air inlet. If contaminants are
found:
Remove products immediately from the
area. If they have been there for an extended
period, call a qualified service technician to
inspect the appliance for possible damage
from acid corrosion.
If products cannot be removed, immediately
call a qualified service technician to
re-pipe vent and air piping and locate
vent termination/air intake away from
contaminated areas.
1. Combustible/flammable materials -- Do not store
combustible materials, gasoline or any other flammable
vapors or liquids near the appliance. Remove
immediately if found.
2. Air contaminants -- Products containing chlorine or
fluorine, if allowed to contaminate the appliance intake
air, will cause acidic condensate in the appliance. This will
cause significant damage to the appliance if allowed to
continue.
Check vent piping
1. Visually inspect the flue gas vent piping for any signs of
blockage, leakage, or deterioration of the piping. Notify
your qualified service technician at once if you find any
problems.
WARNING Failure to inspect the vent system as noted
above and have it repaired by a qualified
service technician can result in vent system
failure, causing severe personal injury or
death.
Check pressure/temperature gauge
1. Make sure the pressure reading on the boiler pressure/
temperature gauge does not exceed 24 PSI. Higher
pressure may indicate a problem with the expansion
tank.
2. Contact a qualified service technician if problem persists.
Check vent piping
1. Visually inspect the flue gas vent piping for any signs of
blockage, leakage, or deterioration of the piping. Notify
your qualified service technician at once if you find any
problems.
WARNING Failure to inspect the vent system as noted
above and have it repaired by a qualified
service technician can result in vent system
failure, causing severe personal injury or
death.
Check air piping
1. Visually inspect the air inlet elbow to be sure it is
unobstructed. Inspect the entire length of air piping to
ensure piping is intact and all joints are properly sealed.
2. Call your qualified service technician if you notice any
problems.
Check relief valve
1. Inspect the appliance relief valve and the relief valve
discharge pipe for signs of weeping or leakage.
2. If the relief valve often weeps, immediately contact your
qualified service technician to inspect the appliance
and system.
User’s Information Manual

2 Maintenance schedule (continued)
7
WARNING Have leaks fixed at once by a qualified
service technician. Failure to comply could
result in severe personal injury, death, or
substantial property damage.
Operate relief valve
1. Before proceeding, verify that the relief valve outlet has
been piped to a safe place of discharge, avoiding any
possibility of scalding from hot water.
3. Replace the front access door.
Test low water cutoff (if installed)
1. If the system is equipped with a low water cutoff, test the
low water cutoff periodically during the heating season,
following the low water cutoff manufacturer’s
instructions.
Reset button (low water cutoff)
1. Testing the low water cutoff shuts the unit off. Press the
RESET button on the low water cutoff bracket to turn the
unit back on.
Check appliance piping (gas and water)
1. Remove the appliance front access door and perform a gas
leak inspection per steps 1 through 7 of the Operating
Instructions on page 8. If gas odor or leak is detected,
immediately shut down the appliance following the
procedures on page 8. Call a qualified service technician.
2. Visually inspect for leaks around water piping.
Also inspect the circulators, relief valve, and fittings.
Immediately call a qualified service technician to repair
any leaks.
WARNING To avoid water damage or scalding due to
valve operation, a metal discharge line must
be connected to the relief valve outlet and
run to a safe place of disposal. This discharge
line must be installed by a qualified heating
installer or service technician in accordance
with the instructions in the Copper-fin II
Installation and Operation Manual. The
discharge line must be terminated so as
to eliminate possibility of severe burns or
property damage should the valve discharge.
2. Read the boiler pressure/temperature gauge to make
sure the system is pressurized. Lift the relief valve
top lever slightly, allowing water to relieve through
the valve and discharge piping.
3. If water flows freely, release the lever and allow the valve
to seat. Watch the end of the relief valve discharge pipe
to ensure that the valve does not weep after the line has
had time to drain. If the valve weeps, lift the seat again to
attempt to clean the valve seat. If the valve continues to
weep afterwards, contact your qualified service
technician to inspect the valve and system.
4. If water does not flow from the valve when you lift the
lever completely, the valve or discharge line may be blocked.
Immediately shut down the appliance, following
the operating instructions on page 8 of this manual. Call
your qualified service technician to inspect the appliance
and system.
Shut appliance down (unless boiler is used
for Domestic Water)
1. Follow “To Turn Off Gas to Appliance” on page 8 of this
manual.
2. Do not drain the system unless exposure to freezing
temperatures will occur.
3. Do not drain the system if it is filled with an antifreeze
solution.
4. DO NOT shut down appliances used for domestic water
heating, they must operate year-round.
User’s Information Manual

8
3 Operating instructions
FOR YOUR SAFETY READ BEFORE OPERATING
A. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.
B. BEFORE OPERATING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier
than air and will settle on the floor.
FOR YOUR SAFETY
"WHAT TO DO IF YOU SMELL GAS"
Do not try to light any appliance.
Do not touch any electrical switch; do not use
any phone in your building.
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier,
call the fire department.
C. Use only your hand to turn the gas
control knob. Never use tools. If the
knob will not turn by hand, don't try to
repair it, call a qualified service tech-
nician. Force or attempted repair may
result in a fire or explosion.
D. Do not use this appliance if any part
has been under water. Immediately call
a qualified service technician to inspect
the appliance and to replace any part
of the control system and any gas con-
trol which has been under water.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on
this label.
2. Turn off all electric power to the appliance.
3. Open control access panel.
4. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.
5. Push in gas control knob slightly and
turn clockwise to "OFF."
NOTE: On the 36C valve, knob cannot be
turned to "OFF" unless knob is pushed in
slightly. Do not force.
7. Turn gas control knob counterclockwise
to "ON."
8. Replace control access panel.
9. Turn on all electric power to the appliance.
10. If the appliance will not operate, follow
the instructions "To Turn Off Gas To
Appliance" and call your service tech-
nician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1. Turn off all electric power to the appliance
if service is to be performed.
2. Open control access panel.
3. Push in gas control knob slightly and
turn clockwise to "OFF". Do not
force.
4. Replace control access panel.
ON
OFF
OFF
ON
LBL2084 REV D
OFF
ON
OFF
ON
PSI IN
GAS CONTROL KNOB
SHOWN IN THE "ON" POSITION
6. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor. If
you smell gas, STOP! Follow "B" in the safety
information above on this label. If you don't
smell gas, go to the next step".
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
User’s Information Manual

4 SMART SYSTEM control module
9
Copper-fin II control module
MENU/EXIT DISPLAY SCREEN ENTER/RESET
TXENSUOIVERPNWODPU
• Press to turn heater off or back on
• Press to select a menu item
• Press after parameter programming
to store parameter data
• Press to exit Service Mode
• Hold 5 seconds to enter code
Input Mode (Menu Mode)
• Press to move up one level
in Menu Mode or to exit
Menu Mode
• Press to change boiler water
temperature and/or tank water
temperature set point during
normal operation
• Press to change displayed data
values in Menu Mode
• Press to navigate through menu
listing in Menu Mode
• Press to toggle display during normal
operation to show outlet and return
temperatures, fan speed, flame signal, etc.
• Press to toggle between digits when
entering access code or between hour,
minutes, etc., when entering date and time
• Press and hold both to enter Service Mode
• 2-Line / 16 character LCD display
• Backlit LCD
Figure 4-1_Control Panel - Operator Interface
Use the control panel (FIG. 4-1) to set temperatures, operating conditions, and monitor appliance operation.
User’s Information Manual

10
4 SMART SYSTEM control module
Access modes
User
The user can adjust the space heating target temperature
and the tank target temperature (if a tank sensor is used)
by using the UP and DOWN buttons (FIG. 7-1) at any time
during normal operation. By entering the USER code (0704),
the user can also change temperature units, time and date,
and night setback settings. In User Mode, the following
parameters can be viewed but not changed:
• Boiler outlet water target temperature in DHW Mode
• Appliance model number
• Software version
• Total operating hours
• Total cycles
Installer
Most parameters are available only to the installer, accessible
only by entering the installer access code, see the Copper-fin
II Service Manual.
Saving parameters (reference the Parameter Table
in the Copper-fin II Service Manual)
To save parameters and exit programming:
Press the ENTER/RESET button, then the MENU/EXIT
button 3 times.
To keep parameter settings only for a current operating
cycle:
Press the MENU/EXIT button 3 times after making all
desired parameter changes.
To enter a parameter and continue programming:
Press the MENU/EXIT button 1 time to return to the
parameter listings; press again to return to the menu listings.
Remember to press the ENTER/RESET button when finished
programming in order to save the changes made.
See the Copper-fin II Service Manual for a detailed description
of parameters and access modes.
Viewable and changeable control
parameters
A: General
A1: User code
The User Code allows the user to access and change a limited
number of control parameters. The access code can be changed
by the user or the installer to a code of their choosing. To
change the code, parameter A1 must be accessed. The default
code is 0704. The code can be changed one digit at a time by
using the arrow keys on the display.
A2: Date and time
The control uses an internal clock for the night setback feature
and for logging of events. For these features to work correctly,
the clock must be set when the unit is first installed or any time
the unit has been powered off for more than 30 days. To set
the clock, parameter A2 must be accessed. The date and time
are displayed as “YY:MM:DD W hh:mm”. YY = year, MM =
month, DD = date, W = day (1 = Monday, 2 = Tuesday, etc.), hh
= hour (24 hour time; 2:00 PM = 14:00), mm = minutes.
CAUTION Before changing parameters, note the
settings so that the unit can be returned to
its original operating parameters.
NOTICE The internal clock does not adjust for
Daylight Savings Time and therefore, will
require a manual adjustment.
A3: Software version
The software version allows the user to view the software version
in use by the control. This software controls the operation of
the unit. When a new software version becomes available, the
existing control can be replaced with a new control to update
the software.
A4: Temperature units
The control can be configured to display temperature in either
°C or °F. This parameter can be changed by the user or the
installer by accessing parameter A4. The default is °F.
A5: SH Night setback offset
Once the internal clock has been set correctly, the SH night
setback feature can be used to program a lower set point. The
value of this parameter will be subtracted from the normal set
point to determine the set point used during night setback.
This parameter can be changed by the user or the installer
by accessing parameter A5. The temperature range for this
parameter is 0°F to 90°F (50°C). The feature is turned off with
a setting of 0°F. The default value is 0°F.
User’s Information Manual

11
4 SMART SYSTEM control module (continued)
B: Temperature settings (boiler only)
B6: Manual reset high limit
The SMART SYSTEM control includes an integrated manual
reset high limit (MRHL) feature, based on the outlet temperature.
The set point for the MRHL is adjusted using parameter B6.
The temperature range of this parameter is 32°F (0°C) to 210°F
(99°C) for water heaters and pool heaters, or 240°F (115°C) for
boilers. The default value is 210°F (99°C) for boilers and water
heaters, or 200°F (93°C) for pool heaters.
B7: Auto reset high limit
The SMART SYSTEM control also includes an integrated auto
reset high limit (ARHL) feature, based on outlet temperature.
The ARHL set point is fixed at 205°F (96°C) for water heaters,
and 185°F (85°C) for pool heaters. For boilers, the temperature
range of this parameter is 32°F (0°C) to 235°F (113°C). The
default value is 200°F (93°C).
E: DHW settings
E1: DHW tank set point
When a temperature sensor is installed in the DHW tank, the
DHW tank set point sets the target temperature of the water
in the tank. The user or installer can adjust this set point
by accessing parameter E1. The temperature range of this
parameter is 60°F (15°C) to 190°F (88°C). The default value is
120°F (49°C).
E2: DHW boiler set point (boiler only)
When an indirect DHW call for heat becomes active, the control
will use the DHW boiler set point to determine the firing rate
of the unit based on the actual outlet water temperature.
This parameter can be changed by the installer by accessing
parameter E2. The temperature range of this parameter is 32°F
(0°C) to 261°F (127°C). The default value is 180°F (82°C).
E3: Minimum tank set point
The minimum allowable tank set point can be adjusted using
parameter E3. The temperature range of this parameter is 60°F
(16°C) to the value of parameter E4. The default value is 60°F
(16°C).
E4: Maximum tank set point
The maximum allowable tank set point can be adjusted using
parameter E4. The temperature range of this parameter is
60°F (16°C) to the value of parameter E3 to 190°F (88°C). The
default temperature is 190°F (88°C).
A6: SH Night setback times
If parameter A5 is set to anything other than 0°F, the night
setback feature becomes active. This will require start and
stop times to be programmed for the days that reduced
temperatures are required. These times can be changed by
the user or the installer by accessing parameter A6. Each day
of the week (Monday through Sunday) will have an on and
off time.
Example: Monday ON: 22:30, Tuesday OFF: 6:45. If you
wish to skip a day and have no night setback, set the on and
off times to the same time, and prior to 12:00 p.m. To keep
night setback active through the entire day, set the on and off
time to the same time, and after 12:00 p.m. The default times
for each day will be 08:00 (OFF) and 18:00 (ON).
A7: DHW Night setback offset
Once the internal clock has been set correctly, the DHW
night setback feature can be used to program a lower SH
set point during various times of the week. The value of
this parameter will be subtracted from the normal set point
to determine the set point used during night setback. This
parameter can be changed by the user or installer by accessing
parameter A7. The temperature range for this parameter is
0°F to 90°F (50°C). The default value is 0°F.
A8: DHW Night setback times
If parameter A7 is set to anything other than 0°F, the DHW
night setback feature becomes active. This will require start
and stop times to be programmed for the days that reduced
temperatures are required. These times can be changed by
the user or the installer by accessing parameter A8. Each day
of the week (Monday through Sunday) will have an on and
off time. If you wish to skip a day, set the on and off times to
the same time, and prior to 12:00 p.m. To keep night setback
active through the entire day, set the on and off times to the
same time and after 12:00 p.m.
User’s Information Manual

12
4 SMART SYSTEM control module
F: Outdoor air reset (boiler only)
F5: Outdoor air shutdown
When the outdoor temperature rises above this point, the
control will block all SH demands (DHW demands will still
be active). This parameter can be changed by the user or the
installer by accessing parameter F5. The temperature range of
this parameter is 32°F (0°C) to 122°F (50°C). The default value
is 80°F (27°C).
F6: Outdoor air shutdown differential
The outdoor air shutdown differential parameter is the number
of degrees below parameter F5 the outdoor air temperature must
go before the unit will respond to a SH demand. This parameter
can be changed by the user or the installer by accessing
parameter F6. The temperature range of this parameter is 0°F
(0°C) to 90°F (50°C). The default value is 10°F (5°C).
F8: Boost temperature
If a SH demand lasts longer than the programmed time delay
setting (F9) and there have been no DHW demands, the control
will increase the SH set point by the amount in this parameter.
If the SH demand continues through another time period, the
set point will be increased again. This will continue until either
the SH demand ends, a maximum of 20 increases has occurred,
or the maximum set point has been reached. Once the SH
demand has been satisfied the set point will revert back to its
calculated setting. The boost temperature can be changed by
the installer by accessing parameter F8. 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).
F9: Boost time
The boost time parameter sets the amount of time that must
elapse with a SH demand before the water temperature set
point will be increased. This parameter can be changed by the
installer by accessing parameter F9. The time range for this
parameter is 1 minute to 250 minutes. The default value is 20
minutes.
G: Anti-cycling
G3: Ramp delay enable
When the ramp delay on/off parameter is active, the ramp
delay limits the boiler firing rate when a SH cycle has started.
There are six (6) limiting steps used to limit temperature
overshoot and short cycles, reference the Copper-fin II Service
Manual. This feature can be turned on or off depending on the
installation. This parameter can be changed by the installer by
accessing parameter G3. The control range of this parameter
is 0 = Off, 1 = Ramp Up Only, and 2 = Ramp Up and Ramp
Down. The default value is 0.
G4: Ramp delay settings
When ramp delay is active, there are up to six (6) limiting steps,
as described above in Ramp Delay On/Off. Each step has its own
time period and modulation limit. The installer can adjust these
settings by accessing parameter G4. The settings for each step
are displayed as follows:
G4 Ramp n
mm minutes ppp.p%
Where n is the number of the step, mm is the length of time in
that step, and ppp.p is the maximum firing rate allowed during
that step. Upon selecting this parameter, the ramp number n
will be flashing. Use the UP and DOWN keys to select the step
you wish to adjust. Use the NEXT and PREVIOUS keys to select
the setting you wish to adjust. Use the UP and DOWN keys to
adjust the value of each setting. NOTE THAT THE FIRING
RATE LIMIT IN STEP 6 WILL APPLY THROUGHOUT THE
ENTIRE CALL FOR HEAT. If 100% rate is required, the rate
limit in step 6 must be 100%. The default values are 2 minutes
at 50% for step 1, 1 minute at 80% for step 2, and 1 minute at
100% for steps 3 through 6.
I: Cascade
I2: Max. outlet set point
When the system supply sensor is connected, or the system
supply temperature is provided through ModBus, this parameter
determines the set point used by the individual boilers in a
Cascade. When a boiler is commanded to fire by the Leader
boiler, it will attempt to achieve this temperature at its outlet.
The Leader boiler will limit the modulation of the last boiler to
fire in order to hold the temperature at the system supply sensor
to the user set point. If any of the boiler outlet temperatures
reach the max. cascade set point, the boiler will then modulate
down on its own in order to keep its outlet temperature within
the max. cascade set point. Therefore, this parameter can be used
to limit the outlet temperatures of all the boilers in a Cascade.
Note that this parameter does not apply when the boiler is
heating an indirect DHW tank. This parameter is adjustable by
the installer by accessing parameter I2. The temperature range
for this parameter is 32°F (0°C) - 261°F (127°C). The default
max. cascade set point is 185°F (85°C).
User’s Information Manual

13
4 SMART SYSTEM control module (continued)
Status Display Screens
By using the Previous/Next (, ) arrow keys on the SMART SYSTEM display panel, you can navigate through the 11 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
Screen #1
Line 1
HTR: OFF The unit has been turned OFF by the Enter/Reset button on the
SMART SYSTEM display panel.
HTR: STAND-BY The unit has not received a call for heat from a remote thermostat nor
has it received a call for heat from a DHW thermostat.
HTR: SETPOINT MET
The unit has met the water temperature set point, but is still receiving
a call for heat from either a remote thermostat, a DHW thermostat,
or a BMS.
HTR: PRE-PURGE The unit has initiated the pre-purge upon a call for heat.
HTR: IGNITER * ON
The unit has begun the heatup time prior to the trial for ignition.
Display will show IGNITOR A or IGNITOR B depending on which
stage has priority.
HTR: RUN STG ****
Or
HTR: DHW STG ****
The unit has fired and is running at the displayed number of stages
(1,2,3,4)
HTR: POST-PURGE
The call for heat has been satisfied and the unit runs the fan for an
additional post-purge period to clear the combustion chamber and
vent system of residual flue products.
HTR: SERVICE MODE The unit has been placed in a temporary mode that will allow the unit
to fire for the purpose of combustion analysis.
Screen #1
Line 2
OUT: ***F (***)
When the outlet sensor has been selected as the control sensor
(default), the control will display the outlet temperature as well as the
set point in parenthesis.
OUT: ***F
If the outlet sensor has not been selected as the control sensor or a
system supply sensor is connected, only the outlet temperature will
be displayed.
OUT: OPEN The control does not detect the outlet sensor.
OUT: SHORTED The outlet sensor wires or the sensor itself has become shorted.
Press the Next arrow key on the SMART SYSTEM display to access Screen #2.
Status display screens
User’s Information Manual

14
4 SMART 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 11 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
Screen #2
Line 1
INLET: ***F (***)
When the inlet sensor has been selected as the control sensor, the
control will display the inlet temperature as well as the set point in
parenthesis.
INLET: ***F If the inlet sensor has not been selected as the control sensor or a system
return sensor is connected, only the inlet temperature will be displayed.
INLET: OPEN The control does not detect the inlet sensor.
INLET: SHORTED The inlet sensor wires or the sensor itself has become shorted.
Screen #2
Line 2 RISE: ***F The difference between the inlet temperature and the outlet temperature
is displayed.
Press the Next arrow key on the SMART SYSTEM display to access Screen #3.
Screen #3
Line 1
SYSSUP: ***F (***)
When the system supply sensor has been selected as the control sensor,
the control will display the system supply temperature as well as the set
point in parenthesis.
SYSSUP: ***F If the system supply sensor has not been selected as the control sensor,
only the system supply temperature will be displayed.
SYSSUP: OPEN The control does not detect the system supply sensor.
SYSSUP: SHORTED The system supply sensor wires or the sensor itself has become shorted.
Screen #3
Line 2
SYSRTN: ***F (***)
When the system return sensor has been selected as the control sensor,
the control will display the system return temperature as well as the set
point in parenthesis.
SYSRTN: ***F If the system return sensor has not been selected as the control sensor,
only the system return temperature will be displayed.
SYSRTN: OPEN The control does not detect the system return sensor.
SYSRTN: SHORTED The system return sensor wires or the sensor itself has become shorted.
Press the Next arrow key on the SMART SYSTEM display to access Screen #4.
Screen #4
Line 1
OUTDOOR: ***F The control will display the outdoor air temperature as sensed by the
outdoor air sensor.
OUTDOOR: OPEN The control does not detect the outdoor air sensor.
OUTDOOR: SHORTED The outdoor air sensor wires or the sensor itself has become shorted.
Screen #4
Line 2
TANK: ***F The control will display the tank temperature as sensed by the tank
sensor.
TANK: OPEN The control does not detect the tank sensor.
TANK: SHORTED The tank sensor wires or the sensor itself has become shorted.
User’s Information Manual

15
4 SMART SYSTEM control module (continued)
Status Display Screens (cont’d)
By using the Previous/Next (, ) arrow keys on the SMART SYSTEM display panel, you can navigate through the 11 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
Press the Next arrow key on the SMART SYSTEM display to access Screen #5.
Screen #5
Line 1 0 – 10V BMS: **.*V The control displays the BMS voltage input from 0 to 10 volts.
Screen #5
Line 2 STG DEMAND: **** The control displays the number of stages being called by the control.
Press the Next arrow key on the SMART SYSTEM display to access Screen #6.
Screen #6
Line 1 FAN SPEED: *** The control will display either OFF, LOW, or HIGH depending upon
fan speed requirements of number of stages firing.
Screen #6
Line 2 0 – 10V RATE: **.*V The control will display 0 to 10 volts based upon the number of stages
firing.
Press the Next arrow key on the SMART SYSTEM display to access Screen #7.
Screen #7
Line 1 SH CFH: *** The control will display either ON or OFF based upon a demand (call
for heat) for space heating.
Screen #7
Line 2 WHR CFH: *** The control will display either ON or OFF based upon a demand (call
for heat) for DHW (domestic hot water).
Press the Next arrow key on the SMART SYSTEM display to access Screen #8.
Screen #8
Line 1 SYS PUMP: *** The control will display either ON or OFF based upon system pump
requirements upon demand for space heating.
Screen #8
Line 2 SYSPUMPSPD: **.*V The control will display the 0 – 10V input voltage from the system
pump based upon system pump speed.
Press the Next arrow key on the SMART SYSTEM display to access Screen #9.
Screen #9
Line 1
UNIT PUMP: *** The control will display either ON or OFF based upon unit pump
requirements upon demand for space heating.
UNIT PUMP: DELAY The control will display delay in unit pump operation after the space
heating requirements have been satisfied.
Screen #9
Line 2
DHW PUMP: *** The control will display either ON or OFF based upon unit pump
requirements upon demand for DHW.
DHW PUMP: DELAY The control will display delay in unit pump operation after the DHW
requirements have been satisfied.
Press the Next arrow key on the SMART SYSTEM display to access Screen #10.
Screen #10
Line 1 FLM SIG – A: **.* µA The control displays the igniter flame signal of igniter A in microamps.
Screen #10
Line 2 FLM SIG – B: **.* µA The control displays the igniter flame signal of igniter B in microamps.
Press the Next arrow key on the SMART SYSTEM display to access Screen #11.
Screen #11
Line 1 IGN * AMPS: *.* A The control displays the current of either igniter A or B.
Screen #11
Line 2 MIX VAL POS: ** % The control displays the mixing valve percentage open to the system.
User’s Information Manual

Revision Notes: Revision A (ECO C08226) initial release.
Revision B (ECO C11124) reflects the update of ignition timing
information on page 13.
Revision C (PCP #3000021634 / CN #500011858) reflects an update to
the maintenance information on page 5.
CFX-CHX-USER_MM #100161847_DIR #2000001379_Rev C
01/18