Lochinvar 402 User manual

Copper-fin II/IIE
Boiler and Water
Heater
Service Manual
Models: 402 - 2072
This manual must only be used
by a qualified heating installer
/ service technician. Read all
instructions, including this
manual and the Installation
and Operation Manual, 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.
CFX-CHX-SER 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........................................................................ 2
Hazard Definitions.............................................................. 2
PLEASE READ BEFORE PROCEEDING ........................ 3
Handling Ceramic Fiber Materials...................................... 3
When servicing appliance............................................. 3
Appliance operation..................................................... 3
Appliance water............................................................ 3
WHAT IS IN THIS MANUAL.............................................. 4
1. SERVICE
The Copper-fin Display ...................................................... 5
Control Inputs ............................................................... 6
Control Outputs............................................................. 7
General Operation........................................................ 8
Sequence of Operation................................................. 9-10
Display Panel Menu Access ............................................ 11
Display Panel Parameter Access..................................... 12
Parameter Table A - Boiler Operation ........................ 13-14
Parameter Table B - Water Heater Operation............ 15-16
Viewable and Changeable Control Parameters.......... 17-24
2. MAINTENANCE
Maintenance and Annual Startup................................ 25-32
3. TROUBLESHOOTING
Before Troubleshooting.................................................... 33
Check Control Module Fuses .......................................... 33
Table 3A - Troubleshooting Chart - No Display............... 34
Checking Temperature Sensors ...................................... 35
Table 3D - Troubleshooting Chart - Noisy System.......... 36
Table 3E - Troubleshooting Chart - Fault Messages.. 37-43
Revision Notes.................................................. Back Cover
Contents

Copper-fin II/IIE Boiler and Water Heater Service Manual
Please read before proceeding
Installer – Read all instructions, including
this manual and the Installation and
Operation Manual, before installing.
Perform steps in the order given.
User – This manual is for use only by a
qualified heating installer/service technician.
Refer to the User’s Information Manual for
your reference.
Have this appliance serviced/inspected by a
qualified service technician at least annually.
Failure to comply with the above could
result in severe personal injury, death or
substantial property damage.
When calling or writing about the appliance
– Please have the appliance model and serial
number from the appliance’s rating plate.
Consider piping and installation when
determining appliance location (see the
Installation and Operation Manual).
Any claims for damage or shortage in
shipment must be filed immediately
against the transportation company by the
consignee.
3
WARNING
NOTICE
When servicing appliance –
• To avoid electric shock, disconnect electrical supply
before performing maintenance.
• To avoid severe burns, allow appliance to cool before
performing maintenance.
Appliance operation –
• Do not block flow of combustion or ventilation air to
the appliance.
• Should overheating occur or gas supply fail to shut off,
do not turn off or disconnect electrical supply to
circulator. Instead, shut off the gas supply at a location
external to the appliance.
• 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.
Appliance water –
• Thoroughly flush the system (without appliance
connected) to remove sediment. The high-efficiency
heat exchanger can be damaged by build-up or
corrosion due to sediment.
• Do not use petroleum-based cleaning or sealing
compounds in the appliance system. Gaskets and seals in
the system may be damaged. This can result in
substantial property damage.
• Do not use “homemade cures” or “appliance patent
medicines”. Serious damage to the appliance, personnel,
and/or property may result.
Handling ceramic fiber materials
REMOVAL OF COMBUSTION CHAMBER LINING
WARNING The combustion chamber insulation in this
appliance contains ceramic fiber material.
Ceramicfibers canbe convertedtocristobalite
in very high temperature applications.
The International Agency for Research on
Cancer (IARC) has concluded, “Crystalline
silica in the form of quartz or cristobalite
from occupational sources is carcinogenic
to humans (Group 1).” Normal operating
temperatures in this appliance are below the
level to convert ceramic fibers to cristobalite.
Abnormal operating conditions would have
to be created to convert the ceramic fibers in
this appliance to cristobalite.
The ceramic fiber material used in this
appliance is an irritant; when handling
or replacing the ceramic materials it is
advisable that the installer follow these safety
guidelines.
Avoid breathing dust and contact with
skin and eyes.
• Use NIOSH certified dust respirator (N95).
This type of respirator is based on the OSHA
requirements for cristobalite at the time this
document was written. Other types of respirators may
be needed depending on the job site conditions.
Current NIOSH recommendations can be found on
the NIOSH website at http://www.cdc.gov/niosh/
homepage.html. NIOSH approved respirators,
manufacturers, and phone numbers are also listed on this
website.
• Wear long-sleeved, loose fitting clothing, gloves, and eye
protection.
Apply enough water to the combustion chamber lining to
prevent airborne dust.
Remove the combustion chamber lining from the appliance
and place it in a plastic bag for disposal.
Wash potentially contaminated clothes separately from
other clothing. Rinse clothes washer thoroughly.
NIOSH stated First Aid.
Eye: Irrigate immediately.
Breathing: Fresh air.

4
What is in this manual?
Service
The Copper-fin display
• Display panel readout, buttons and their functions
Control module inputs
• Control module inputs and options
Control module outputs
• Control module outputs and options
General
• How the appliance operates
• How the control module operates
• Access modes -- user and installer
• Sequence of operation -- Domestic Hot Water
(DHW)/space heating
Control panel menu access
• Accessing programming mode and locating menus
(See separate guides covering the ModBus and PC interfaces)
Control panel parameter access
• Accessing and changing parameters from the display panel
Quick start information -- parameter tables
• An index of available adjustments and readouts, where to
access them and where to find detailed information.
Maintenance
• Service and maintenance schedules
• Address reported problems
• Inspect appliance area and appliance interior
• Check all piping for leaks
• Flue vent system and air piping
• Combustion air filter
• Check water system
• Check expansion tank
• Check relief valve
• Check igniter
• Check all appliance wiring
• Flame inspection
• Check flue gas passageways
• Inspect and clean burner
• Checking combustion air pressure
• Checking manifold gas pressure
• Cleaning heat exchanger
• Review with owner
Troubleshooting
• Troubleshooting table - No display
• Checking temperature sensors
• Troubleshooting table - Noisy system
• Troubleshooting table - Fault messages displayed on
Operator Interface
Copper-fin II/IIE Boiler and Water Heater Service Manual
Copper-fin boiler operation (pages 13 - 14)
• A: General
• B: Temperature Settings
• C: Data Logging
• D: Functions
• E: DHW Settings
• F: Outdoor Air Reset
• G: Anti-cycling
• H: Control Modes
• I: Cascade
• J: Building Management System (BMS)
• K: Pumps
• L: Service Notification
Copper-fin water heater operation (pages
15 - 16)
• A: General
• B: Temperature Settings
• C: Data Logging
• D: Functions
• E: DHW Settings
• F: Anti-cycling
• G: Control Modes
• H: Cascade
• I: Building Management System (BMS)
• J: Pumps
• K: Service Notification

1 Service
5
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
The Copper-fin display
Copper-fin II/IIE Boiler and Water Heater Service Manual

1 Service
6
SMART
SYSTEM
CONTROL
BOARD
LOW
VOLTAGE
CONNECTION
BOARD
DHW THERMOSTAT
(OPTIONAL)
ROOM THERMOSTAT/
ZONE CONTROL
(OPTIONAL)
SYSTEM SUPPLY/
ENABLE SENSOR
(OPTIONAL)
SYSTEM RETURN SENSOR
(OPTIONAL ON BOILER)
SEQUENCER BUILDING
MANAGEMENT SYSTEM
(FIELD PROVIDED)
OUTDOOR SENSOR
(OPTIONAL)
LOUVER PROVING SWITCH
(FIELD PROVIDED)
INLET TEMPERATURE
SENSOR
OUTLET TEMPERATURE/
LIMIT SENSOR
LOW WATER CUTOFF
(OPTIONAL)
GAS PRESSURE SWITCH
(OPTIONAL)
MANUAL RESET HIGH
LIMIT (OPTIONAL)
AIR PRESSURE SWITCH
FLOW SWITCH
DISPLAY PANEL
PC INTERFACE
(OPTIONAL)
TANK SENSOR
(OPTIONAL)
SYSTEM PUMP SPEED
(OPTIONAL)
CASCADE
MODBUS
BOARD
(OPTIONAL)
SENSOR
CONNECTION
BOARD
(BOILER AND
POOL HEATER
ONLY)
MODBUS
Control inputs
Copper-fin II/IIE Boiler and Water Heater Service Manual

7
SMART
SYSTEM
CONTROL
BOARD
LOW
VOLTAGE
CONNECTION
BOARD
THREE WAY VALVE
(OPTIONAL ON BOILER)
LOUVER RELAY
BUILDING
MANAGEMENT
SYSTEM
RUN TIME CONTACTS
ALARM CONTACTS
ALARM
(OPTIONAL)
UNIT PUMP
SYSTEM PUMP
RELAY
DHW PUMP RELAY
(BOILER)
HOT SURFACE
IGNITER
BLOWER
GAS VALVES
DISPLAY PANEL
PC INTERFACE
(OPTIONAL)
CASCADE
INDICATES CONNECTIONS MADE TO THE LINE VOLTAGE TERMINAL STRIP LOCATED IN THE CONTROL PANEL AREA
MODBUS
BOARD
(OPTIONAL)
0-10V
FIRING RATE
MODBUS
Control outputs
1 Service (continued)
Copper-fin II/IIE Boiler and Water Heater Service Manual

1 Service
8
General Operation
How the appliance operates
The Copper-fin uses a finned copper tube heat exchanger to
transfer heat from the flue products to the water. An electronic
control module monitors various inputs to initiate a call for
heat. The blower provides both primary and secondary air to
the burner and forces the flue products out of the combustion
chamber and into the vent system.
How the control module operates
The Copper-fin control module receives input from appliance
sensors. The control module activates and controls the
blower and gas valves to regulate heat input and switches
heater, DHW and system pumps on and off as needed. The
user/installer programs the module to meet system needs by
adjusting control parameters. These parameters set operating
temperatures and heater operating modes. Appliance operation
can be based on heater outlet water temperature, heater return
water temperature, system supply temperature, system return
temperature or tank temperature, depending on the parameter
setting.
Sequence of operation
Table 1A shows control module normal sequences of operation
for space heating and DHW operation. The combined operation
sequence is for a typical application, programmed to provide
DHW priority.
Access modes
User
The user can adjust space heating and/or tank setpoints using
the UP and DOWN buttons 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: Heater outlet water temperature in DHW
mode; heater model number; software version; total operating
hours, and total cycles.
Installer
Most parameters are available only to the installer, accessible
only by entering the installer access code (5309).
Saving parameters
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.
Copper-fin II/IIE Boiler and Water Heater Service Manual

9
Sequence of operation
Table 1A_Sequence of Operation - Space Heating and DHW
1 Service (continued)
OPERATION DISPLAY
1. The manual reset high limit must be closed before any
action will take place. HTR: Standby
OUT: 123.8F(129)
2. Upon a call for heat the control turns on the appropriate
pumps (system and boiler pumps for space heating; DHW
pump for DHW call). The flow switch and low water cutoff
(if equipped) must close.
HTR: Standby
OUT: 123.8F(129)
3. • The gas pressure switch(es) (if equipped) must close.
• The louver proving input must close.
• If the air pressure switch is open, the prepurge cycle then
begins by starting the combustion blower. Once started,
the air pressure switch must close.
HTR: Standby
OUT: 123.8F(129)
4. After the 15 second prepurge, the blower slows down and
the hot surface igniter (HSI) is energized. The HSI is heated
for at least 20 seconds.
HTR: PREPURGE
OUT: 123.9F(129)
5. Once the HSI is hot, the trial for ignition begins with the
opening of the gas valve. HTR: IGNITION
OUT: 123.9F(129)
6. If the SMART SYSTEM control does not sense flame, then
it will lock out.
HTR: POSTPURGE, PREPURGE
OUT: 123.9F(129)
7. If the SMART SYSTEM control senses flame,
it will fire the burner to maintain the setpoint. The
stages will fire as required to hold the actual temperature at
the setpoint.
HTR: RUN STG: 1
OUT: 124.8F(129)
8. If the space heating call for heat is active, and the DHW
thermostat closes, the control will turn on the DHW pump,
wait 2 seconds, and then turn off the boiler pump. This will
divert the hot water away from the heating zone(s) and send
it to the DHW tank instead. The control will then fire the
stages to maintain the outlet temperature to the DHW boiler
setpoint.
HTR: DHW STG 123
OUT: 177.8(180)
Copper-fin II/IIE Boiler and Water Heater Service Manual

1 Service
10
Sequence of operation
Table 1A_(continued from previous page) Sequence of Operation - Space Heating and DHW
OPERATION DISPLAY
9. If the DHW thermostat remains on for more than 30 minutes,
and the space heating call for heat is also on, then the
control will turn on the boiler pump, turn off the DHW pump
after 2 seconds, and resume firing based on the space
heating setpoint. As long as both the space heating and
DHW calls for heat remain active, the control will switch
back and forth between the two modes until one of them is
satisfied.
HTR: RUN STG 12
OUT: 123.0F(129)
10. Once both calls for heat are satisfied, the control will turn
off the burners. The blower will remain on for the
30 second postpurge cycle. Any pumps that are running
will continue to run for their respective pump delay times,
then turn off.
HTR: POSTPURGE
OUT: 127.4F(129)
11. Boiler pump off, system pump continues its delay if
longer. HTR: Standby
OUT: 124.7F(129)
12. System pump off. HTR: Standby
OUT: 122.9F(129)
Copper-fin II/IIE Boiler and Water Heater Service Manual

11
Display panel menu access
Table 1B_Use this procedure to access menus from the display panel
1 Service (continued)
Note: Not all menu listings shown above are available on water heaters.
Copper-fin II/IIE Boiler and Water Heater Service Manual

1 Service
12
Display panel parameter access
Cascade
BMS
Table 1C_This is a typical example of accessing a parameter, shown for parameter K2, SH pump delay
Copper-fin II/IIE Boiler and Water Heater Service Manual

13
Parameter table A - Boiler Operation
Table 1D_This table lists SMART SYSTEM control module parameters and where to access them for boiler operation
ONLY
1 Service (continued)
Menu Sub
Item Description See Page User Access Installer Access
Display Modify Display Modify
A
1 User Code 17 Yes Yes Yes Yes
2 Date and Time 17 Yes Yes Yes Yes
3 Software Version (Software Ver) 17 Yes No Yes Yes
4 Temperature Units (Temp Units) 17 Yes Yes Yes Yes
5 SH Night Setback Offset (SH NSB Temp) 17 Yes Yes Yes Yes
6 SH Night Setback Times (SH NSB Time) 17 Yes Yes Yes Yes
7 DHW Night Setback Offset (DHW NSB Temp) 17 Yes Yes Yes Yes
8 DHW Night Setback Times (DHW NSB Time) 17 Yes Yes Yes Yes
B
1 SH Setpoint (SH Setpoint) 17 Yes Yes Yes Yes
2 SH Minimum Setpoint (SH Min Setpt) 17 No No Yes Yes
3 SH Maximum Setpoint (SH Max Setpt) 18 No No Yes Yes
4 SH Offset 18 No No Yes Yes
5 SH Differential (SH Differentl) 18 No No Yes Yes
6 Manual Reset High Limit (Man Res Hi Lim) 18 Yes Yes Yes Yes
7 Auto Reset High Limit (Aut Res Hi Lim) 18 Yes Yes Yes Yes
C
1 Hours Running SH (Hours Run SH) 18 No No Yes Yes
2 Hours Running DHW (Hours Run DHW) 18 No No Yes Yes
3 Ignition Attempts (Ign Attempts) 18 No No Yes Yes
4 Last 10 Lockouts 18 No No Yes Yes
D
1 Clear Error Log (Clr Error Log) 18 No No Yes Yes
2 Service Mode Delay (Service Delay) 18 No No Yes Yes
3 Display Timeout (Display Time) 18 No No Yes Yes
4 Bypass Valve Time (Bypass V Time) 18 No No Yes Yes
5 Freeze Protection Pump On (Freeze Pump) 19 No No Yes Yes
6 Freeze Protection Burner On (Freeze Burn) 19 No No Yes Yes
7 Freeze Protection Differential (Freeze Differ) 19 No No Yes Yes
E
1 Tank Setpoint 19 Yes Yes Yes Yes
2 DHW Boiler Setpoint (DHW Blr Setp) 19 Yes Yes Yes Yes
3 SH/DHW Switching Time (SH/DHW Switch) 19 Yes Yes Yes Yes
4 DHW/SH Switching Time (DHW/SH Switch) 19 Yes Yes Yes Yes
5 DHW Tank Differential (DHW Tank Diff) 19 No No Yes Yes
F
1 Minimum Outdoor Temperature (Min Air Temp) 20 No No Yes Yes
2 Maximum Outdoor Temperature (Max Air Temp) 20 No No Yes Yes
3 Maximum SH Setpoint (Max SH Setpt) 20 No No Yes Yes
4 Minimum SH Setpoint (Min SH Setpt) 20 No No Yes Yes
5 Outdoor Shutdown Setpoint (Outdoor Shtdn) 20 Yes Yes Yes Yes
6 Outdoor Shutdown Differential (Shutdown Diff) 21 Yes Yes Yes Yes
7 Shift Reset Curve (Shift Reset) 21 No No Yes Yes
8 Boost Temperature (Boost Temp) 21 Yes Yes Yes Yes
9 Boost Time 21 Yes Yes Yes Yes
GENERAL
TEMPERATURE
SETTINGS
DATA
LOGGING
FUNCTIONS
DHW
SETTINGS
OUTDOOR RESET
Copper-fin II/IIE Boiler and Water Heater Service Manual

1 Service
14
Parameter table A - Boiler Operation (continued)
Table 1D_(continued from previous page) This table lists SMART SYSTEM control module parameters and where to
access them for boiler operation ONLY
Menu Sub
Item Description See Page User Access Installer Access
Display Modify Display Modify
G
1 Anti-cycle Time (Anti Cycl Tm) 21 No No Yes Yes
2 Anti-cycle Override Differential (Override Diff) 21 No No Yes Yes
3 Minimum On/Off Delay Stages 1, 3 (On/off Delay) 21 Yes Yes Yes Yes
4 Next On Delay 21 Yes Yes Yes Yes
H
1 SH Controlling Sensor (SH Cnt Sensor) 22 No No Yes Yes
2 Enable Input (Active / Inactive) 22 No No Yes Yes
3 BMS Input (Active / Inactive) 22 No No Yes Yes
4 Cascade (Active / Inactive) 22 No No Yes Yes
5 Sequencer 22 No No Yes Yes
6 ModBus (Active / Inactive) 22 No No Yes Yes
7 ModBus Timeout (ModBus Time) 22 No No Yes Yes
I
1 Boiler Address (Blr Adress) 23 No No Yes Yes
2 Maximum Cascade Setpoint (Max Casc Stpt) 23 Yes Yes Yes Yes
3 Cascade Offset (Cas Offset) 23 No No Yes Yes
4 Cascade Differential (Cas Different) 23 No No Yes Yes
J
1 BMS Type 23 No No Yes Yes
2 Voltage at Minimum (V at Min) 23 No No Yes Yes
3 Voltage at Maximum (V at Max) 23 No No Yes Yes
4 Minimum Power (Min Power) 23 No No Yes Yes
5 Maximum Power (Max Power) 23 No No Yes Yes
6 Minimum Setpoint (Min Setpoint) 23 No No Yes Yes
7 Maximum Setpoint (Max Setpoint) 24 No No Yes Yes
8 Voltage to Start CFH (V at Start) 24 No No Yes Yes
9 Voltage Differential Stop CFH (V Diff Stop) 24 No No Yes Yes
K
1 System Pump Delay (Sys Pump Dlay) 24 No No Yes Yes
2 SH Pump Delay (SH Pump Delay) 24 No No Yes Yes
3 DHW Pump Delay (DHW Pump Dlay) 24 No No Yes Yes
4 System Pump Mode (Sys Pump Mode) 24 No No Yes Yes
L
1 Service Interval Time (months) (Srv Int Time) 24 No No Yes Yes
2 Service Interval Run (Srv Int Run) 24 No No Yes Yes
3 Service Interval Operation (hours) (Srv Int Op) 24 No No Yes Yes
4 Reset Service 24 No No Yes Yes
5 Accept Personality Plug (Accept PPlug) 24 No No Yes Yes
ANTI-
CYCLING
CONTROL
MODES
CASCADEBMSPUMPS
SERVICE
NOTIFICATION
Copper-fin II/IIE Boiler and Water Heater Service Manual

Parameter table B - Water Heater Operation
Table 1E_This table lists SMART SYSTEM control module parameters and where to access them for water heater
operation ONLY
1 Service (continued)
Menu Sub
Item Description See Page User Access Installer Access
Display Modify Display Modify
A
1 User Code 17 Yes Yes Yes Yes
2 Date and Time 17 Yes Yes Yes Yes
3 Software Version (Software Ver) 17 Yes No Yes Yes
4 Temperature Units (Temp Units) 17 Yes Yes Yes Yes
5 DHW Night Setback Offset (DHW NSB Temp) 17 Yes Yes Yes Yes
6 DHW Night Setback Times (DHW NSB Time) 17 Yes Yes Yes Yes
B1 Manual Reset High Limit (Man Res Hi Lim) 18 Yes Yes Yes Yes
C
1 Hours Running DHW (Hours Run DHW) 18 No No Yes Yes
2 Ignition Attempts (Ign Attempts) 18 No No Yes Yes
3 Last 10 Lockouts 18 No No Yes Yes
D
1 Clear Error Log (Clr Error Log) 18 No No Yes Yes
2 Service Mode Delay (Service Delay) 18 No No Yes Yes
3 Display Timeout (Display Time) 18 No No Yes Yes
4 Bypass Valve Time (Bypass V Time) 18 No No Yes Yes
5 Freeze Protection Pump On (Freeze Pump) 19 No No Yes Yes
6 Freeze Protection Burner On (Freeze Burn) 19 No No Yes Yes
7 Freeze Protection Differential (Freeze Differ) 19 No No Yes Yes
E
1 Tank Setpoint 19 Yes Yes Yes Yes
2 DHW Tank Offset (DHW Tank Offs) 19 No No Yes Yes
3 DHW Tank Differential (DHW Tank Diff) 19 No No Yes Yes
F
1 Anti-cycle Time (Anti Cycl Tm) 21 No No Yes Yes
2 Anti-cycle Override Differential (Override Diff) 21 No No Yes Yes
3 On/Off Delay 21 Yes Yes Yes Yes
4 Next On Delay 21 Yes Yes Yes Yes
G
1 Enable Input (Active / Inactive) 22 No No Yes Yes
2 BMS Input (Active / Inactive) 22 No No Yes Yes
3 Cascade (Active / Inactive) 22 No No Yes Yes
4 ModBus (Active / Inactive) 22 No No Yes Yes
5 ModBus Timeout (ModBus Time) 22 No No Yes Yes
H1 Boiler Address (Blr Adress) 23 No No Yes Yes
2 Maximum Cascade Setpoint (Max Casc Stpt) 23 Yes Yes Yes Yes
GENERAL
TEMP.
SETTINGS
DATA
LOGGING
FUNCTIONS
DHW
SETTINGS
Copper-fin II/IIE Boiler and Water Heater Service Manual
15
ANTI-
CYCLING
CONTROL
MODES
CASCADE

Parameter table B - Water Heater Operation (continued)
Table 1E_(continued from previous page) This table lists SMART SYSTEM control module parameters and where to
access them for water heater operation ONLY
Menu Sub
Item Description See Page User Access Installer Access
Display Modify Display Modify
I
1 BMS Type 23 No No Yes Yes
2 Voltage at Minimum (V at Min) 23 No No Yes Yes
3 Voltage at Maximum (V at Max) 23 No No Yes Yes
4 Minimum Power (Min Power) 23 No No Yes Yes
5 Maximum Power (Max Power) 23 No No Yes Yes
6 Minimum Setpoint (Min Setpoint) 23 No No Yes Yes
7 Maximum Setpoint (Max Setpoint) 24 No No Yes Yes
8 Voltage to Start CFH (V at Start) 24 No No Yes Yes
9 Voltage Differential Stop CFH (V Diff Stop) 24 No No Yes Yes
J1 DHW Pump Delay (DHW Pump Dlay) 24 No No Yes Yes
K
1 Service Interval Time (months) (Srv Int Time) 24 No No Yes Yes
2 Service Interval Run (Srv Int Run) 24 No No Yes Yes
3 Service Interval Operation (hours) (Srv Int Op) 24 No No Yes Yes
4 Reset Service 24 No No Yes Yes
5 Accept Personality Plug (Accept PPlug) 24 No No Yes Yes
BMS
PUMPS
SERVICE
NOTIFICATION
Copper-fin II/IIE Boiler and Water Heater Service Manual
1 Service
16

17
Viewable and changeable control parameters
General
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. The
default code is 0704. The code can be changed one digit at a
time by using the arrow keys on the display.
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. 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.
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).
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 setpoint
during various times of the week. The value of this parameter
will be subtracted from the normal setpoint to determine the
setpoint used during night setback. The temperature range for
this parameter is 0°F to 90°F (50°C). The default value is 0°F.
DHW Night setback times
If the DHW Night Setback parameter 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. 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.
Temperature settings
SH Setpoint (boiler only)
The SH setpoint user sets the water temperature setpoint for
fixed operation, or the maximum temperature setpoint when
the outdoor air sensor is used. The temperature range of this
parameter is 60°F (15°C) to 230°F (110°C). The default value
is 80°F (27°C).
SH Minimum setpoint (boiler only)
The SH minimum 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. The temperature range of this parameter is 32°F
(0°C) to 230°F (110°C). The default value is 70°F (21°C).
CAUTION Before changing parameters, note the
settings so that the unit can be returned to
its original operating parameters.
1 Service (continued)
NOTICE The internal clock does not adjust for
Daylight Savings Time and therefore, will
require a manual adjustment.
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.
Temperature units
The control can be configured to display temperature in either
°C or °F. The default is °F.
SH Night setback offset (boiler only)
Once the internal clock has been set correctly, the SH night
setback feature can be used to program a lower setpoint. The
value of this parameter will be subtracted from the normal
setpoint to determine the setpoint used during night setback.
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.
SH Night setback times (boiler only)
If the SH Night Setback parameter 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. Each day of the week (Monday
through Sunday) will have an on and off time.
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1 Service
18
SH Maximum setpoint (boiler only)
The SH maximum 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. The temperature range of this parameter is 32°F (0°C)
to 230°F (110°C). The default value is 220°F (104°C).
SH Offset (boiler only)
The SH offset sets how many degrees above setpoint the
temperature has to go before the unit will shut off. The
temperature range of this parameter is 0°F (0°C) to 54°F (30°C).
The default value is 10°F (5°C).
SH Differential (boiler only)
The SH differential sets how many degrees below the turn off
temperature the temperature has to go before the unit will turn
on. The temperature range of this parameter is 0°F (0°C) to
54°F (30°C). The default value is 20°F (11°C).
Manual reset high limit
The SMART SYSTEM control includes an integrated manual
reset high limit (MRHL) feature, based on the outlet temperature.
The temperature range of this parameter is 32°F (0°C) to 210°F
(99°C) for water heaters, or 240°F (115°C) for boilers. The
default value is 210°F (99°C) .
Auto reset high limit (boiler only)
The SMART SYSTEM control also includes an integrated auto
reset high limit (ARHL) feature, based on outlet temperature.
The ARHL setpoint is fixed at 205°F (96°C) for water 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).
Data logging
Hours running SH (boiler only)
The hours running SH parameter shows the total number of
hours the unit has been in the SH firing mode.
Hours running DHW
The hours running DHW parameter shows the total number of
hours the unit has been in the DHW firing mode.
Ignition attempts
The burner cycles parameter shows the total number of times
the unit has attempted to fire.
Last 10 lockouts
The control will log the 10 most current lockouts with the date
and time the lockout occurred.
Functions
Clear error log
The reset last 10 lockouts parameter allows the lockout counter
to be reset to 0. Once accessed, press the RESET key to clear
the counter.
Service mode delay
By pressing the PREVIOUS and NEXT keys on the front of
the display for five (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 either
maximum firing rate or minimum firing rate for the purpose of
combustion analysis. The delay sets the length of time the unit
will stay in the Service Mode if no keys have been pressed before
going back to its original state. The time range of this parameter
is 0 to 40 minutes. The default value is 20 minutes.
Display timeout
Whenever a button on the display is pushed, the backlight on
the LCD is turned on, and a delay timer is reset. When this
timer expires, the backlight turns off, and the display returns
to the first Status Screen. The range of this timer is 0 to 255
seconds. Setting this parameter to 0 disables the backlight. The
default value is 60 seconds.
Bypass valve time
In low temperature systems, a 3-way bypass valve can be installed
between the outlet and the inlet of the heater (see Installation
and Operation Manual). The SMART SYSTEM control can
be set to automatically control this valve to maintain the inlet
temperature above the condensing temperature. Different
valves require different amounts of time to open and close
completely. The SMART SYSTEM controls need to know how
long this takes in order to control the bypass valve properly.
The range of this parameter is 0 to 255 seconds. The default
value is 20 seconds.
Copper-fin II/IIE Boiler and Water Heater Service Manual

1 Service (continued)
19
Copper-fin II/IIE Boiler and Water Heater Service Manual
DHW/SH switching time (boiler only)
The time that the SMART SYSTEM control services a DHW
demand before returning to the SH demand is set by this
parameter. The range of this parameter is 0 to 240 minutes.
Setting this parameter to 0 disables the switching function. The
default value of this parameter is 30 minutes.
DHW Tank offset (water heater only)
The tank offset is the number of degrees the DHW tank
temperature must go above the tank setpoint before the water
heater will turn off. The temperature range of this parameter is
0° to 10°F (5°C). The default value is 4°F (2°C).
DHW Tank differential
The tank differential is the number of degrees the DHW tank
temperature must go below the tank setpoint before the heater
or boiler will start to heat the DHW tank. The temperature
range of this parameter is 0° to 40°F (22°C). The default value
is 6°F (3°C).
Freeze protection pump on
In order to prevent the water in the heater from freezing, the
SMART SYSTEM control turns on the boiler pump whenever
the inlet temperature goes below the minimum temperature.
The range of this parameter is 32°F (0°C) to 104°F (40°C). The
default value is 45°F (7°C).
Freeze protection burner on
If the inlet temperature continues to drop after strating
the pump (see Freeze Protection Pump On), and the inlet
temperature goes below a second minimum temperature, the
first stage will fire. The temperature range of this parameter
is 32°F (0°C) to 104°F (40°C. The default value is 37°F (3°C).
Freeze protection differential
Once the pump has turned on, this parameter determines how
much the inlet temperature must rise before the pump turns
off. Similarly, once Stage 1 has turned on, this parameter also
determines how much the inlet temperature must rise before
Stage 1 turns back off. The temperature range of this parameter
is 0° to 72°F (40°C). The default temperature is 5°F (3°C).
DHW settings
DHW tank setpoint
When a temperature sensor is installed in the DHW tank, the
DHW tank setpoint sets the target temperature of the water
in the tank. The temperature range of this parameter is 60°F
(15°C) to 190°F (88°C). The default value is 120°F (49°C).
DHW boiler setpoint (boiler only)
When an indirect DHW call for heat becomes active, the control
will use the DHW boiler setpoint to determine the firing rate
of the unit based on the actual outlet water temperature. The
temperature range of this parameter is 32°F (0°C) to 261°F
(127°C). The default value is 180°F (82°C).
SH/DHW switching time (boiler only)
When a SH call for heat and a DHW call for heat are present at
the same time, the SMART SYSTEM control can switch back
and forth between the two calls. This parameter determines
the maximum length of time the boiler will service the SH call
before switching to the DHW call. The range of this parameter
is 0 to 240 minutes. Setting this parameter to 0 disables the
switching function. The control will service the DHW demand
until it ends, then return to the SH demand (if active). The
default value of this parameter is 30 minutes.

1 Service
20
Maximum SH setpoint
When the outdoor temperature drops to its minimum
setting (F1) the water temperature setpoint will be at this
value, if the SH setpoint is set higher (FIG. 1-1). The
temperature range of this parameter is 32°F (0°C) to 248°F
(120°C). The default value is 180°F (82°C).
Minimum SH setpoint
When the outdoor temperature rises to or above its
maximum setting (F2) the water temperature will be at this
value (FIG. 1-1). The temperature range of this parameter
is 32°F (0°C) to 248°F (120°C). The default value is 70°F
(21°C).
Outdoor air shutdown
When the outdoor temperature rises above this point, the
control will block all SH demands (DHW demands will
still be active). The temperature range of this parameter
is 32°F (0°C) to 122°F (50°C). The default value is 80°F
(27°C).
Figure 1-1_Outdoor Air Reset Curve
Outdoor air reset (boiler only)
Outdoor air reset operation
When the outdoor air sensor is installed, the control will
calculate the water temperature setpoint based on the outdoor
air temperature. As the outdoor air temperature drops, the
water temperature setpoint increases. This feature allows
the unit to be more efficient in periods of mild weather, see
FIG. 1-1.
Minimum air temperature
When the outdoor air temperature drops to this point, the
water temperature will be at its maximum setting (FIG.
1-1). The setpoint will continue to increase as the outdoor
temperature drops below this setting. The water temperature
will be limited by the user setpoint. The temperature range of
this parameter is -22°F (-30°C) to 86°F (30°C). The default
value is 25°F (-4°C).
Maximum air temperature
When the outdoor air temperature rises to or above this point,
the water temperature will be at its minimum setting (FIG.
1-1). The temperature range of this parameter is -22°F (-30°C)
to 86°F (30°C). The default value is 70°F (21°C).
Copper-fin II/IIE Boiler and Water Heater Service Manual