Use and Care Guide

PARAMETER SETTINGS
PERFORMANCE DATA
DIAGNOSTIC CODES
To Obtain Performance Data:
1. Press and hold the (Down) buon for two
seconds.
2. While holding the (Down) buon, press and
hold the Domesc Hot Water buon (hold
both buons at the same me).
3. Use the (Up) and (Down) buons to
scroll to the desired informaon described in
the Performance Data Table.
4. The data for the performance number
automacally appears in the display.
5. To exit performance data, repeat step 2 above.
2
1
Performance Data Table
To display diagnosc codes:
1. Press and hold the Domesc Hot Water
buon for two seconds and then the
(Up) buon simultaneously.
2. The last nine maintenance codes display
and ash one aer the other.
3. To exit diagnosc codes and return the
boiler to normal operaon, press and hold
the Domesc Hot Water buon for two
seconds, and then the (Up) buon
simultaneously.
1. To access the Parameter Sengs, press and hold the red buon on the PC Board for
ve seconds.
2. Press the Mode buon on the controller.
3. Press the (Up) or (Down) arrows to select a parameter seng. Press the Select
buon.
# Data Unit
01
Water Pressure PSI/bar*
02
Water Flow Rate x0.1 GPM/LPM*
03
Supply Temperature °F/°C*
04
Return Temperature °F/°C*
05
Freeze Protecon Temperature °F/°C*
06
Exhaust Temperature °F/°C*
07
Outgoing Temperature °F/°C*
08
Inlet Temperature °F/°C*
10
Heat Exchanger Outlet Temperature °F/°C*
11
Fan Frequency Hz
13
Water Flow Control Posion 0=Mid, 1=Open, 2=Closed
14
Bypass Flow Control Posion Degrees of opening
15
3-Way Valve Control Posion 0=Mid, 1=DHW, 2=CH
16
3-Way Valve Control Cycles x100
MODE
Eco
MODE
Eco
MODE
Eco
MODE
Eco
1
MODE
2
Eco
1
* See “Electrical Diagnoscs” secon of this document.
3
Eco
Eco
MODE
MODE
4
2
3
4
5. To exit parameter sengs and enter normal operaon mode, press either the red
buon on the PC Board or the Mode buon on the controller.
DIAGNOSTICS POINTS
COMPONENT WIRE COLOR
VOLTAGE
*When the unit is operang
RESISTANCE
PCB
Connector PIN
Power Supply Black-White AC108-132V N/A CN24 1-3
Flame Rod Yellow-Body more than 2VAC* N/A CN1 2
Spark Electrode Red-Black 11-14VDC* N/A CN1 11-22
Combuson Fan
Red-Black 7-48VDC* N/A CN1 3-5
White-Black 2-14VDC* N/A CN1 5-9
Yellow-Black 11-14VDC N/A CN1 5-7
Water Flow Control Device
Red-Pink
N/A 40-60Ω
CN1 18-20
White-Blue CN1 14-16
Grey-Orange 11-14VDC N/A CN1 11-29
Brown-Grey
limier On：less than 1VDC limier O：4-6VDC
N/A CN1 25-29
Venturi Control Device
Blue-White
N/A 33-43Ω
CN1 17-19
Yellow-Red(No.9) CN1 13-15
Black-Red(No.3) 11-14VDC
N/A
CN1 11-29
Black-Brown
Close Posion：less than 1VDC Open Posion：4-6VDC
CN1 26-29
Black-Grey
Close Posion：4-6VDC Open Posion：less than 1VDC
CN1 24-29
By-Pass Flow Control Device
Red-Pink
N/A 40-60Ω
CN1 10-12
White-Blue CN1 6-8
3way Valve
Brown-Grey
limier On：less than 1VDC limier O：4-6VDC
N/A
CN1 23-29
Orange-Grey
11～14VDC
CN1 11-29
Pink-Red
N/A 40-60Ω
CN11 1-2
White-Blue CN11 3-4
Gas Solenoid Valve Yellow-Black 11-14VDC* 15-25Ω CN1 28-30
Outgoing Thermistor
White-White
N/A
59°F：11.4-14kΩ
86°F：6.4-7.8kΩ
113°F：3.6-4.5kΩ
140°F：2.2-2.7kΩ
221°F：0.6-0.8kΩ
*Disconnect the connector and measure at thermistor side.
CN11 18-19
White-White CN11 10-13
Inlet Thermistor White-White CN11 17-19
Exhaust Thermistor White-White CN11 16-19
Heat Exchanger Thermistor White-White CN11 15-19
Supply Thermistor White-White CN11 12-19
Return Thermistor White-White CN11 10-20
Freeze Protecon Thermistor Black-Black
32°F：38k-43k; 50°F：22k-26k; 68°F：14k-17k
*Disconnect the connector and measure at thermistor side.
CN11 10-14
Transformer
White-Grey AC108-132V
N/A
CN18 1-2
Red-Red AC20-30V (possible to measure at Output terminal as substute posion) CN18 3-4
Overheat Switch Black-Black less than 1VDC less than 1Ω 7(CN11)-27(CN1)
Water Flow Sensor
Black-Red 11-14VDC
N/A
CN1 11-29
Yellow-Black 4-7VDC* more than 6Hz (0.26 GPM) 9(CN11)-29(CN1)
Water Pressure Sensor
Red-Black 11-14VDC
N/A
CN1 11-29
Yellow-Black
0kPa：655-745mV; 200kPa：2155-2245mV; 400kPa：3655-3745mV
6(CN11)-29(CHN1)
Water Level Electrode White-White 11-14VDC N/A 8(CN11)-29(CN1)
Integrated Pump White-Black AC108-132V N/A CN21 1-2
Air Handler Red-Black 11-14VDC N/A CN8 1-2
Control Panel Black-Black 11-14VDC N/A CN2 1-4
Addional Controller(s) White-White 11-14VDC N/A CN29 1-3
Amp Fuses
This unit has two (10) amp glass fuses located
on the PC Board. Remove the fuses and check
connuity through it. If you have connuity
through each fuse then it is funconing.
Otherwise, the fuse is blown and must be
replaced.
Flame Rod
Place one lead of your meter to the ame rod and
the other to ground. When the unit is aempng to
ignite, you should read more than 2VAC.
Important Safety Notes
There are a number of (live) tests required when
performing electrical diagnoscs on this product.
Proceed with cauon at all mes to avoid contact with
energized components inside the boiler. Only trained
and qualied service technicians should aempt to
repair this product. Before checking for resistance
readings, disconnect the power source to the unit and
isolate the item from the circuit (unplug it).
no. 02
6.8
100
Air Supply or Exhaust Blockage/Condensate Trap is Full
• Fan current inial check error.
• Ensure condensate line and trap is not blocked.
• Ensure internal air lter is clean with no obstrucons.
• Ensure high altude seng is set properly (See High Altude Seng).
• Ensure combuson air and exhaust vents are not blocked and the approved venng
materials are being used.
• Ensure either the exhaust ring or intake cap is removed properly.
• Ensure vent length is within limits.
• Check fan for debris and ensure wheel turns freely.
• Verify fan check valve is not stuck between fan casing and burner body.
110
No Ignion (Unit Not Turning On)
• Ignion Error.
• Check that the gas is turned on at the boiler, gas meter, and/or propane cylinder.
• If the unit is installed in a propane system, ensure that gas is in the tank.
• Bleed all air from the gas lines.
• Check the ground wire for the PC Board.
• Ensure the ame rod wire is connected.
• Ensure the igniter is operaonal.*
• Ensure the venng is installed in accordance with the I-Series Boiler Installaon and
Operaon manual.
• Check that the surface of the electrode and ame rod are clean.
• Check gas solenoid valves for open or short circuits.*
• Verify gas orice installed is correct for the gas system the unit is installed in.
• Check ame rod voltage to ground during ignion.
120
Flame Failure
• Boiler has ame failure.
• Check that the gas is turned on at the boiler, gas meter, and/or propane cylinder.
• If the unit is installed in a propane system, ensure that gas is in the tank.
• Ensure the venng is installed in accordance with the I-Series Boiler Installaon and
Operaon Manual.
• Ensure the ame rod wire is connected.
• Ensure the gas type and inlet gas pressure are correct.
• Bleed all air from the gas lines.
• Check the ground wire to the PC Board.
• Check ame rod voltage to ground during ignion.
140
Heat Exchanger Overheat
• Overheat switch is tripped.
• Measure the resistance of the Overheat Switch.*
• Check the heat exchanger surface for hot spots which may indicate blockage due to
scale buildup.
• Ensure the boiler pump is not locked up.
• Ensure that all of the valves in the CH circuit are open.
• Ensure the boiler and CH circuit does not have a freezing condion.
• The surface of the heat exchanger may turn to a black color as stainless steel is
tempered even in normal condions. This does not indicate an abnormal condion.
• Check for damage on the exhaust, seal, and venng.
150
Venturi Control
• Venturi operaon error.
• Ensure the venturi motor is operang correctly.*
• Replace the gas valve assembly.
161
High Outgoing Temperature
• Safety shutdown because DHW outgoing temperature is too hot.
• Check sensor wiring for damage of outgoing thermistor.
• Measure resistance of outgoing thermistor.*
• Ensure the gas valve has no damage and the orice is installed correctly.
• Replace the gas valve assembly.
170
Venturi Blockage
• Check the venturi and silencer for blockage.
• Before reseng this error, check if the condensate drain is block and if the venng is
connected properly.
190
Electrical Grounding
• Secondary circuit ground fault.
• Check all electrical components for electrical short.
250
Condensate Pump (Accessory)
• Boiler will operate for 60 seconds.
• Conrm wire connecons and harnesses are good.
• Ensure the condensate reservoir is empty and condensate pump is operaonal.
310
Freeze Protecon Thermistor
• Check sensor wiring for damage.
• Measure the resistance of the sensor.
• Replace if necessary.
321
Outgoing Thermistor
• Check sensor wiring for damage.
• Clean sensor of any scale buildup present.
• Measure the resistance of the sensor.
• Replace if necessary.
331
Heat Exchanger Thermistor
• Check sensor wiring for damage.
• Measure the resistance of the sensor.
• Replace if necessary.
341
Inlet Thermistor
• Check sensor wiring for damage.
• Measure the resistance of the sensor.
• Replace if necessary.
353
Supply Thermistor
• Check sensor wiring for damage.
• Clean the surface of the sensor.
• Measure the resistance of the sensor.
• Check the return thermistor.
• Replace if necessary.
380
Exhaust Thermistor
• Check sensor wiring for damage.
• Clean the surface of the sensor.
• Measure the resistance of the sensor.
• Check the return thermistor.
• Replace if necessary.
363
Return Thermistor
• Check sensor wiring for damage.
• Measure the resistance of the sensor.
• Replace if necessary.
393
Outdoor Thermistor
• Ensure that DIP switch 1 is set to the appropriate posion.
• Check sensor wiring for damage.
• Measure the resistance of the sensor.
• Replace if necessary.
400
Pressure Sensor
• Check sensor wiring for damage.
• Measure the voltage of the sensor.
• Replace if necessary.
430
High/Low Water Pressure
• If the water pressure is too low, add water into the system unl at least 13 PSI is
observed.
• Ensure there are no leaking components in the CH system.
• If the pressure is too high, adjust the pressure to a maximum of 30 PSI.
• Ensure the pressure relief valve and water ll are working correctly.
443
Low Water Cut-O (LWCO)
• Ensure the LWCO device is working correctly.
• Ensure the LWCO jumper is connected properly when LWCO is not in use.
• Ensure the output is 24 VAC on the PCB. If it is not, check the transformer harness and
output of transformer.
520
Solenoid Valve Circuit
• Check the ame rod and wire for damage.
• Close the gas shut o valve installed near the boiler.
• Ensure the ame rod and wire are not wet.
• Check the output from the PC Board to the solenoid gas valve.
• If the output from the PC Board is abnormal, replace the PC Board.
• If the output from the PC Board is normal, replace the gas control.
540
High Exhaust Temperature
• Check the exhaust thermistor wiring for damage.
• Clean the surface of the thermistor.
• Measure the resistance of the exhaust thermistor.*
• If the sensor has been replaced and the error sll appears, check the return thermistor.
• If the boiler is used in a hard water area, ush the DHW plate heat exchanger.
• Check the exhaust duct, seal, and venng for damage.
No
Code
Nothing happens when DHW water ow is acvated
• Verify the minimum ow rate required to re the boiler is seen.
• Measure the resistance of the ow control sensor.*
• Clean the inlet water supply lter.
• On new installaons, ensure the hot and cold water lines are not reversed.
• Conrm the inlet water temperature is not too high.
• Ensure the integrated boiler pump operates properly.
• Ensure the DHW operaon switch is on.
No
Code
Decreasing or uctuang DHW water ow volume
• Ensure the gas pressure is proper.
• Ensure the water pressure is proper.
• Ensure the inlet water lter for DHW is clean.
• Ensure there is not lime scale buildup present.
• Ensure the vent and vent sengs are properly set up.
• If a DHW recirculaon system is used, the DHW ow volume may vary slightly.
• Ensure all air has been purged from the system.
• Ensure the pump is set to speed 3.
• During simultaneous CH and DHW operaon mode, it is possible to see
decreased DHW ow.
No
Code
Fluctuang DHW outgoing temperature
• Ensure the gas pressure is proper.
• Ensure the water pressure is proper.
• Ensure the DHW thermistor, ow servo, and bypass servo are in good condion.
• Ensure the inlet lter for DHW is clean.
• If a DHW recirculaon system is used, the DHW temperature may vary slightly.
• Ensure all air is removed from the system.
No
Code
Boiler does not start heang with a heang demand present
• Supply temperature or return temperature inside the boiler may be too hot.
• Ensure the pump operates properly.
• If there is a demand immediately aer using DHW, wait at least three minutes
for operaon.
No
Code
The boiler does not operate with the CH seng buon
• If DIP switch 2 is OFF, CH operaon will operate via the room thermostat.
No
Code
DHW recirculaon does not begin
• Ensure the DHW recirculaon pump is connected to the DHW_Pump terminal.
• Ensure DIP switch 3 is ON.
• Ensure the DHW recirculaon plumbing type is set properly per Parameter 12.
• Ensure the DHW recirculaon with mer relay input is set properly per
Parameter 13.
• Ensure the wiring to the external mer is correct.
• Ensure the external mer is ON, if in use.
• The recirculaon logic has an OFF interval aer use.
No
Code
Simultaneous DHW and CH is not funconal
• Ensure DIP switch 4 is ON.
• If CH set point temperature is lower than 140°F, it is not permied (this includes
outdoor reset temperature sengs).
• Ensure the DHW inlet temperature is not too hot.
• Ensure the heang load for DHW and CH are within limits to handle both
simultaneously.
No
Code
Cannot change the DHW set point temperature
• When DHW is being produced, the temperature seng can only be adjusted
between 98°F and 110°F.
No
Code
Supply temperature is dierent from the seng temperature on the controller
• During outdoor sensor control, the supply temperature will vary dependent on
the outdoor temperature.
• During simultaneous operaon of DHW and CH, the supply temperature for CH
is based on DHW control.
No
Code
CH capacity is insucient
• Ensure the parameters are properly set for the installaon.
• During simultaneous operaon of DHW and CH, ow volume to heang can be
reduced.
No
Code
Pump or fan even with no demand
• The boiler may start or operate the pump for freeze protecon operaon.
• The pump may intermiently operate to prevent it from becoming stuck.
No
Code
Cannot turn o ECO mode
• During DHW recirculaon, ECO switch will always be on.
720
Flame Rod
• Check the ame rod and wire for damage.
• Ensure the ame rod and wire are not wet.
• If there is no issue with the ame rod or wiring, replace the PC Board.
890
Freeze Issue
• The boiler checks the heat exchanger temperature at the me of operaon.
• If the temperature is too low, an error will occur.
• Check if there is freezing in the boiler or CH system.
999
PC Board Mismatch
• This code occurs when the PC Board and the internal logic do not match.
• Check if the soware versions of the board and operaon board do not match.
LC
Scale Buildup in Heat Exchanger
• Flush the DHW plate heat exchanger.
• The LC code will reset automacally when scaling is removed. If the LC code
remains, check the DHW thermistor, ow sensor or boiler pump.
FFF Maintenance Indicator
• This code is a placeholder in diagnosc code history indicang a service provider
performed maintenance or service.
• Enter this code aer performing service by pressing the following buons at the
same me: UP, DOWN, and DHW. FFF appears on the monitor.
CH
DHW
Up and Down
e:FFF
Press the DHW
buon.
PC Board
Press and Hold
Red Buon
for Five Seconds
01-A
11-A
4. Press the (Up) or (Down) arrows to change the selecon for the seng
number (such as 11-A or 11-b). Then, press the Select buon.
11-
Parameter
Number
Seng Descripon
Selecon
Parameter Value
Date
Adjusted
Parameter Value
Date
Adjusted
A b C d
00
Pressure Indicaon on the Control Panel
Yes No
The current pressure will cycle on the controller display.
01
Outdoor Reset Curve
Curve 1 Curve 2 Curve 3 Curve 4
This parameter is available when Dip Switch 1 is in the OFF (default) posion. Select the proper curve from below.
Curve 1: Standard baseboard, high eciency air handler, cast iron or panel radiators.
Curve 2: Staple up radiant.
Curve 3: High temperature air handler or undersized baseboard.
Curve 4: Custom curve based on customer input.
02
Boost
No 30 Minutes
60
Minutes
This parameter is available when Dip Switch 1 is in the OFF (default) posion.
03
Maximum Outdoor Temperature the Boiler will Fire in CH Mode
No
Maximum
77°F (25°C)
This parameter is available when DIP switch 1 is in the OFF (default) posion. This sets the maximum outdoor temperature the boiler will re in CH
mode.
10
Maximum DHW Set Point Temperature
120°F (49°C) 140°F (60°C)
This selects the maximum DHW set point temperature.
11
How Long Diverter Valve in DHW Posion
3 Minutes 10 Seconds
This selects the length of me the 3 Way Valve will stay in the DHW posion aer using DHW even if a CH demand is present.
12
DHW Recirculaon Piping Setup
Crossover
Valve
Dedicated Return
This parameter is available when DIP switch 3 is in the ON posion. Ensure this seng corresponds to the DHW recirculaon piping.
14
CH Temperature Limitaon During Simultaneous Operaon
Yes No
This parameter is available when DIP switch 3 or 4 is in the ON posion. This enables the CH temperature seng to be limited during simultaneous
DHW and CH operaon.
15
3 Way Valve Posion During Simultaneous Operaon
Normal Addional CH
This parameter is available when DIP switch 3 or 4 is in the ON posion. This adjusts the 3 Way Valve posion to open the CH side more for when the
ow of the CH side is reduced due to DHW demand. This may restrict the DHW capacity.
16
LC Check
Available No Detecon
This seng enables the boiler to check for lime scale condions in the DHW side of the plate heat exchanger.
17
Adjust DHW Temperature Seng
0°F (0°C) 1.8°F (1°C)
3.6°F
(2°C)
5.4°F
(3°C)
This seng enables the DHW output temperature to be adjusted without adjusng the set point temperature.
40
Linked Operaon Between CH Pump 1 and 2
No Yes (Linked Together)
This parameter enables linked operaon between the CH Pump 1 and 2.
41
Linked Operaon Between Main Boiler Pump and CH Pump 1
No
Yes (Linked Together)
(If selected, hydraulic
separaon is needed.)
This enables the linked operaon between the main boiler pump and CH pump 1.
42
Main Pump Runs When the Target Temperature is Achieved
Connuously Intervals
This selects the mode of the main pump running when the target setpoint is achieved.
43
External Pump Runs When the Setpoint Temperature is Achieved
Same as
Main Pump
Does Not Run
This selects the mode of the external pump(s) running when the target setpoint is achieved.
44
External Pump Runs When Freeze Protecon is in Operaon
Does Not
Run
Same as Main Pump
This selects how the external pump operates when freeze protecon is in operaon.
45
Freeze Protecon Level
Default
When Boiler is Installed
in a Warm Room
This selects the freeze protecon level. Selecng “B” will prevent the boiler from operang in freeze protecon mode more than believed necessary.
13
DHW Recirculaon with Timer Relay Input
Yes No
This parameter is available when DIP switch 3 is in the ON posion. This enables an external mer to also control the ming for DWH recirculaon to
more directly correspond to the customers needs.
46
The Dierenal Temperature from Ceasing Fire to Firing Again
Normal Quick
How much temperature drop is permied by the supply water thermistor before the boiler will re again.
CH Seng Temperature
Temperature Drop
168-182°F (75-82°C)
27°F (15°C) 15°F (8°C)
104-166°F (40-74°C)
15°F (8°C) 9°F (5°C)
47
The Time Which the Boiler is not Allowed to Fire Again for CH
Normal (3
Minutes)
Quick (10 Seconds)
This selects the me which the boiler will not be able to re again for CH aer the burner has shutdown.
49
Will the boiler shut down on a high return water temperature
Yes No
This seng is for whether the boiler will shut down at high return water temperatures.
60
Not Available
Not Available
A0
Gas Type
Natural Gas Liquid Propane
For selecng gas type when conducng gas conversion.
A1
Not Available Not Available
A2
Vent Material Used
PVC
Material other than
PVC: CPVC/PP/Other
This selects the venng material used. The boiler is set from the factory to be installed in a PVC venng system. If CPVC, PP, or other approved venng
is used, this may be adjusted. See secon “5.4 PVC Venng Safety Switch” for more informaon.
670
3-Way Valve
• Check the CH system water quality.
• Measure the resistance values and voltage of the 3-way valve control.*
• Replace the 3-way valve control device.
681
Hot Water Supply Temperature Abnormality
• If the DHW water temperature is higher than the set point temperature because
the boiler bypass servo fails to close.
• Measure resistance values and voltage of the bypass ow control.*
• Replace the bypass ow control device if needed; otherwise, check the inlet
thermistor and heat exchanger thermistor wiring for damage.
• Measure the resistance of the sensor.
• Replace if needed.
• Clean the sensor of any scale buildup present.
700
PC Board
• PC Board circuit error.
• Replace PC Board.
710
Solenoid Valve Circuit
• Ensure Dip switch 5 on the PC Board is in the OFF posion (default).
• Ensure the gas control wire is not loose or damaged.
• Replace the PC Board.
651
Water Flow Control
• Measure the resistance values and voltage of the water ow control.*
• Ensure the harness and connector are not wet.
• If the voltage from the PC Board is abnormal, replace the PC Board; otherwise,
replace the water ow servo valve.
661
Bypass
• Measure the resistance values and voltage of the bypass servo valve.*
• Ensure the harness and connector are not wet.
• If the voltage from the PC Board is abnormal, replace the PC Board; otherwise,
replace the bypass servo valve.
631
DHW Recirculaon Pump
• Ensure the DHW recirculaon matches the Parameter 12 seng.
• Ensure the dedicated return line is properly installed.
• Ensure the inlet water lter and bypass lter are clean and free of debris.
• Ensure the DHW recirculaon pump is connected to the DHW Pump Terminal.
• Ensure the capacity of the recirculaon pump is sized appropriately for the
piping (DHW recirculaon pump should be higher than 1.3 GPM).
• Ensure air is removed from the recirculaon line.
610
Combuson Fan
• Check the motor wire harness for loose or damaged connecons.
• Measure resistance and voltage of motor wire harness.*
• Ensure the combuson fan spins freely.
ELECTRICAL DIAGNOSTICS
# Data Unit
17
Venturi Posion 0=Closed, 1=Open
18
Venturi Cycles x100
20
Pump Cycles x100
21
Pump Hours x10
22
Pump for Boiler 0=OFF, 1=ON
23
Pump for System (Pump 1) 0=OFF, 1=ON
24
Pump for System (Pump 2) 0=OFF, 1=ON
31
Outdoor Temperature °F/°C*
32
Addional Controllers Connected *
40
Energizaon Hours x100
41
Combuson Hours x10
42
Combuson Cycles x100
43
Combuson Hours (DHW) x10
44
Combuson Cycles (DHW) x100
45
Commissioning Cycles x1
CH
DHW
Electrical Diagram
Refer to the Wiring Diagram aached to the
back of the front cover.
Controller
Model
Temp. Water Flow Press.
1：F
°F gal/min psi
1：C
°C L/min bar
*Units of Measurement
1. Press the Mode buon.
2. Press the Up or Down arrows to
select a unit.
For more informaon, refer to the I-Series Boiler Installaon and Operaon manual.
ALTITUDE
DIP
Switch 6
DIP
Switch 7
0-2,000 
(0-610 m) (Default)
OFF OFF
2,001-5,400 
(610-1,646 m)
ON OFF
5,401-7,700 
(1,646-2,374 m)
OFF ON
7,701-10,200 
(2,347-3,109 m)
ON ON
High Altude DIP Switch Table
DIP Switches (Secon 12 in Manual and table below)
# DIP Switch Funcon
1
Outdoor Temperature Sensor: Enables or disables outdoor temperature sensor.
OFF (Default): Outdoor Temperature Sensor in Use
ON: Outdoor Temperature Sensor Not in Use
2 Thermostat Usage: Changes mode between Thermostat Usage and CH Buon.
OFF (Default): Thermostat Used
ON: CH buon used. Boiler res based on return water temperature
3 DHW Recirculaon: Enables DHW Recirculaon funcon for Pump 2 connecon.
OFF (Default): DHW Recirculaon OFF (Pump 2 connecon for Zone Pump 2)
ON: DHW recirculaon ON (Pump 2 connecon for DHW Pump)
4 Simultaneous CH and DHW: Enables simultaneous operaon between CH and DHW.
OFF (Default): DHW Priority; ON: Simultaneous CH and DHW Permied
5 Gas Valve Solenoid: Manually shuts down the integrated solenoid gas valve.
OFF (Default): Normal Operaon; ON: Fixed Closed
6,
7
Altude Seng: Sets the appropriate elevaon of the boiler installaon.
(OFF/ON: Depends on Altude)
8 Vent Type Selecon: Selects the venng material used. The boiler is set from the factory to
be installed in a PVC venng system. If CPVC, PP, or other approved venng is used, this
seng may be adjusted. See Secon 5 in Manual for more informaon. OFF (Default): PVC;
ON: Other
SW1 Forced Hi/Low Fire Modes (Secon 12 in Manual)
SW2 Deaeraon Mode (Secon 10 in Manual)
SW3 Data Transfer Mode
(Transfers PC Board data when replacing PC Board.
Refer to instrucons included in replacement parts.)
SW4 Parameter Sengs (Secon 12 in Manual)
OFF
ON
Error Reset
Power Reset
Heat Exchanger Overheat (140), Venturi
Control (150), High Exhaust Temperature
(540), and Freeze issue (890) can be reset
by shung down power to the boiler.
Interlock Reset
Venturi (170) and Solenoid Valve Circuit
(520) can be reset by pushing and holding
buon SW1 and 2 for ve seconds.
Combuson
Error during
DHW
Error can be reset by closing faucet.
Other Reset
Other error can be reset by Domesc On/
O buon or Central Heang buon.
DIP Switches
Record date and parameter
when individual parameters
have been adjusted from
factory default.
NOTE
Controllers Connected
Controller Model CONNECTED NOT CONNECTED
Controller Panel
_ _ _ 1 ―
Addional Controller (BC) _ _ 1 _ _ _ 0 _
Addional Controller (BSC) _ 1 _ _ _ 0 _ _
Addional Controller (BSC2) 1 _ _ _ 0 _ _ _
Note: BC, BSC and BSC2 are PCB recognion posion.