Dunkirk 95M-200 User manual

Quick Guide
for Set-up
and Operation
95M-200
Natural or Propane Gas-fired
Modulating Condensing Boiler
Part #240006282 Rev. 1.0 - 9/06

3
▲
!
▲
!
WARNING
Revise boiler control parameters only if you fully understand the
purpose and result of the changes. Tampering with the control
settings in this manual will void the warranty and can result in
unreliable operation, with possible severe personal injury,
death, or substantial property damage. Refer to PN240006105
Parameter Guide, for full details.

Setting Up the Boiler:
This boiler is designed to operate at the combustion levels in the table below.
When setting up the boiler, make sure that the combustion results are within
the parameters listed below. The rate will change with external variables
such as ambient temperature, altitude and gas calorific value.
See manual 240006103 for more details on setting up the boiler.
Venting Requirements:
Do not run the exhaust or combustion air vent pipe through an unheated space.
See manual 240005103 for details on vent pipe requirements.
%CO2%O2CO ppm
Lower Limit Upper Limit Lower Limit Upper Limit Lower Limit Upper Limit
Natural Gas 9.0% 10.0% 4.5% 5.5% 0 80
Propane Gas 10.5% 11.5% 3.5% 4.5% 0 80
Natural Gas 4” min. w.c. 10” max. w.c.
Propane Gas 10” min. w.c. 14” max. w.c.
GAS SUPPLY PRESSURE
4

Select Parameter Definitions (see manual 240006105 for full list) See pages 6 & 7 for Factory Settings
DEFAULT LOWER UPPER
PARAMETER NAME DESCRIPTION VALUE LIMIT LIMIT
1T3 Set DHW target temperature (See Parameter 33) 150˚F 68˚F 158˚F
2DHW System 01 = ON DISPLAY-01 N/A N/A
3CH System 01 = ON DISPLAY-01 N/A N/A
4* T1 Top Maximum target supply water temperature 180˚F 68˚F 182˚F
5* T1 Foot Minimum target supply water temperature 120˚F 60˚F 140˚F
6* T4 Minimum Outside temp at which the target supply
temperature is at maximum 0˚F -4˚F 50˚F
7* T4 Maximum Outside temp at which the target supply
temperature is at minimum 60˚F 60˚F 78˚F
33 T Plus This value plus parameter 1 equals the
DHW set point. 30˚F 0˚F 54˚F
*Parameters 4-7 define the boilers Outdoor Reset Curve. See pages 6 & 7 for examples of the Outdoor Reset Curve.
5

6
Outdoor Reset Overview
60˚ F
(P7)
0˚ F
(P6)
120˚ F
(P5)
180˚ F
(P4)
120˚: 190 Btu/hr.
150˚: 370 Btu/hr.
180˚: 560 Btu/hr.
Outdoor
Temp.
Boiler Water Temp.
* Baseboard output:
*
*
*
MODULATION CURVE
NOTE: Domestic priority
will override outdoor reset
EXAMPLE 1 (Factory Settings) P7, P6, P5 & P4

7
Radiant Outdoor Reset
60˚ F
(P7)
0˚ F
(P6)
85˚ F
(P5)
110˚ F
(P4)
180
Outdoor
Temp.
Boiler Water Temp.
P1=150˚ F Plus P33=30˚ F Equals 180˚ F Boiler Water
Temperature for Domestic
NOTE: Domestic priority
will override outdoor reset
EXAMPLE 2 (Low Water Temperature System)

Boiler Display Key Pad Operation:
Changing a parameter
Using the six buttons on the front of the boiler (see next page for illustration) and the proper code,
the boiler can be both monitored and modified using the digital display.
Perform the following steps with the boiler powered on and in standby [STBY] mode: (STBY will
appear only momentarily followed by 0.(boiler temp), i.e. 0.120
1. Press and hold the "STEP" button.
2. While holding the "STEP" button down, press and hold the "MODE" button.
3. Hold both buttons down together for several seconds until [CODE] appears on the display.
4. Release "STEP" and "MODE" buttons. [CODE] will stay lit on the display.
NOTE: If [CODE] is not displayed after several seconds, release "STEP" and "MODE" buttons
and press "MODE" several times to return display to [STBY]. Then repeat steps 1-4 again.
5. Press the "STEP" button once (C "xx" will appear, i.e. C 17)
6. Adjust the number displayed to [C-05] by using the "+" and "–" buttons.
7. Press the "STORE" button.
IMPORTANT:The boiler control will automatically exit [CODE] mode
after 10 minutes of no activity.
8

18. Press the "MODE" button several times until [PARA] is displayed.
19. Press the "STEP" button several times until [P-XX] is displayed. The XX represents the parameter
that will be changed (i.e. P-05). The parameter’s value will then be displayed.
10. Use the "+" or "–" buttons to set the desired value.
11. Press the "STORE" button. Steps 9-11 can now be repeated for additional parameter changes
or continue to step 12 to exit.
12. Press the "RESET" button to exit.
9

Boiler Status and Soft Lockout Codes
See manual 240006104 for complete details on Boiler Status Codes and Soft Lockouts.
STANDBY MODE - BOILER SEQUENCE DISPLAY
After display shows Stby for a brief period, the first character shows boiler status, followed by boiler outlet water temp. If the burner is being held off
due to a soft lockout, the display alternates between showing "9" followed by boiler outlet water temp. and "b" followed by the two-digit codes below.
Soft lockout means the boiler will start again automatically if the condition is corrected or timed out
Press [RESET] button to restart boiler without waiting for timeouts below.
First Other Boiler Status First Code Boiler is in soft lockout when "9" or "b" shown.
Digit Digits Digit # Reason for boiler soft lockout is:
"9" alternating with "b"
Actual (measured) outlet water temperature
0Standby - no call for heat _18 Outlet temp. too high (over 203°F). Burner off until
outlet water temp. drops 9°F below target temp.
1Pre-purge (10 seconds) or
Return temp. too high (over 203°F). Burner off until both outlet
Post-purge (15 seconds) _19 and return water temp. drops 9°F below target temp.
2Ignition
3Burner on for CH heating _24 Return temp. higher than supply temp.
Burner off waiting for correction.
4Burner on for DHW heating _25 Outlet water temp. rose too quickly. Burner off 10 min. (burner
recycles, increasing wait 1 min. each attempt to max. 15 min.)
5Checking airflow before prepurge _26 Aquastat contacts open or LWCO contacts open.
Burner off because temperature setting _29 Blower signal not 0 when it should be.
6has been reached Burner off until signal condition terminates.
Temp. rise across boiler more than 58°F. Burner off
7Pump on after CH heating cycle _30 for 2_ minute wait (plus 1 minute for each failed attempt,
for run-on of 10 seconds up to max. of 22 minutes each time).
8Pump on after DHW heating cycle _61 Air pressure switch does not open.
for run-on of 30 seconds
HBurner on, running in high fire mode _65 Waiting for blower to start.
(manually set for test)
LBurner on, running in low fire mode
(manually set for test)
10

Hard Lockout Codes
See manual 240006104 for complete details on Hard Lockouts.
HARD LOCKOUT MODE
Boiler in hard lockout (requires manual RESET)
Code Reason for hard lockout Code Reason for hard lockout
00 Flame detected on start-up 18 Supply water temp. higher than 200°F
02 Ignition failed after 5 retries 19 Return water temp. higher than 190°F
03 Gas valve disconnected 25 Outlet temp. increased too fast
04 Power lost after lockout 28 No signal from blower;
blower not running or defective blower motor
05 Internal control failure 29 Blower signal not "0" when it should be
06 Internal control failure 31 Outlet temp. sensor short circuit
07 Internal control failure 32 Return temp. sensor short circuit
11 Internal control error 36 Outlet temp. sensor open circuit
12 Casting temperature switch open 37 Return temp. sensor open circuit
13 Internal control failure 44 Internal control failure
14 Internal control failure 60 Internal error reading parameters
15 Internal control failure 61 Air flow circuit failure
16 Internal control failure 65 Not enough blower driving force
17 Internal control failure
Display flashes first digit E Eand last two digits (lockout code) (see below) xx
11

Information Mode
See manual 240006104 for complete details on Information Mode.
INFORMATION MODE
Press [MODE] button 2 times from Standby Mode.
(1) Digits after flashing dot show measured outlet temperature.
(2) Digits after flashing dot show -18.
(3) Digits after flashing dot show outside temperature.
(4) Digits after flashing dot show target outlet temperature.
(5) Digits after flashing dot show rate of change in °F per second.
(6) Digits after flashing dot show -32.
NOTE: Display will show A-32 if [STEP] is pressed
after "9" appears.
Display shows Info Info then displays Parameter, Flashing Dot, 1.190
until a key is pressed and Current Status.
Press and Hold Key(s) in BOLD (1) Duration Result Display
[MODE] [STEP] [STORE] [+] [–] Tap Step to next
parameter Measured outlet water temperature 1.180
(First digit shows 1 and dot flashes) (1)
Return Water temperature
(First digit shows 2 and dot flashes) (1) 2.150
This function not used
(First digit shows 3 and dot flashes) (2) 3.-18
Outside temperature
(First digit shows 4 and dot flashes) (3) 4. 42
This function not used
(First digit shows 5 and dot flashes) (2) 5.-18
Target outlet water temperature
(First digit shows 6 and dot flashes) (4) 6.190
Outlet water temp. change over time
(First digit shows 7 and dot flashes) (5) 7. 1
Return water temp. change over time
(First digit shows 8 and dot flashes) (5) 8. 1
This function not used
(First digit shows 9 and dot flashes) (6) 9.-32
12