Dunkirk DXL 170 User Manual BOILER Manuals And Guides 1308321L

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NATURAL
GAS

FIRED

DRAFT
BOILERS

NATURAL

GAS

IRON

SERIES

FOR

FORCED

II

HOT

WATER

TO LP CONVERSION

MGB/OMGB/MCB/DXL
Kit #'s

CAST

SIZES

550002663,

THROUGH

550002664,

200

MBTU

550002665

Conversion kit shall be installed by qualified service
agency in accordance with manufacturer's
instructions
PART#
(QTY)

and all applicable codes and requirements
of authority
having jurisdiction.
If information in these instructions
is not followed exactly, a fire, explosion or production
of carbon monoxide may result causing personal injury
or loss of life. Qualified service agency is responsible

Pilot Orifice - Spark

for proper installation of this kit. Installation
is not
proper and complete until operation of converted
appliance is checked as specified in manufacturer's
instructions supplied with the kit.

Liquid Sealing
Compound

Orifice

PB00208 (1)

# 50 (2)

# 47 (4)

Label, "Nat to LP"
Conversion Plate

240004822

Spring Kit

Figure

1 -

# 49 (4)
(1)

140010 (i)
1272030 (i)

Instructions

Tools Required
• Flat Head Screwdriver

PART#
(QTY)

240009725

Burners

(i)

Assembly

• 1/4" Nut Driver
° 7/16" Open Ended Wrench
° 3/16" Allen Wrench
° 18" Manometer (or dial manometer)

Converting

Boiler From Natural

Gas To Propane (LP):

1.

Follow instruction TO TURN OFF GAS TO APPLIANCE.
Verify electrical power is OFF.

2,

Remove front panel.

3.

Remove burner access door.

4,

Remove main gas burner tubes. See Figure 1.

5.

Remove main burner orifices. See Figure 1.

6.

Install LP gas main burner orifices. Discard excess LP
orifices.

7,

Use 7/16" wrench, disconnect pilot tube from pilot. See
Figure 2.

8.

Remove pilot orifice.

9.

Install LP gas pilot orifice.

10. Apply liquid sealing compound (provided)
pilot assembly fitting.

OR FtCES

Figure

DOOR

2 - Pilot Assembly

Pilot Orifice----....._,. <_:_:
to threads of

11. Reattach pilot tube to pilot and securely tighten.
Figure 2.

See

Pilot Tube

12, Replace main gas burner tubes.
P/N 240009725,

Rev. C [10/2012]

13. Remove cover screw from gas valve pressure regulator.
See Figure 3.

Figure

3 - Gas Valve

14. Remove adjustment screw by turning counterclockwise
_'_i.
See Figure 4.
15. Remove stainless steel natural gas spring.

INLET
PRESSURE

16. Insert Red LP gas spring.
17. Install new adjustment
with regulator top.

PRESSURE
REGULATOR
ADJUSTMENT
BENEATH
COVER
SCREW
QUTLET

PRESSURE
--TAP

screw. Assure screw top is flush

18. Turn pressure regulator adjustment screw clockwise
eleven (11) complete turns. (This is starting point
for manifold pressure,)
19. Install manometer to pressure tap on outlet side of gas
valve. See Figure 3.
NOTE: Gas inlet pressure should be between minimum
of 11" w.c. and maximum of 14" w.c.
20. Turn electric and gas supply ON.

Fire Hazard.
Do not use matches, candles, open
flames, or other methods providing ignition source.
Failure to comply will result in death or serious
injury.

Figure 4 - Gas Valve
Assembly

Adjustment

Screw

...............
CAP SCREW

.................
O-RUNG

21. Check for gas leaks around all gas connections using
commercially available soap solution specifically made
for leak detection.

.............ADJUSTMENT SCREW

22. While boiler is running adjust manifold pressure to ii"
water column by turning pressure regulator adjustment
screw. Check for CO2 and CO levels to assure proper
operation.
23. Turn electric and gas supply OFF.
24. Remove manometer.
securely.

C::_

.... :

.............
SPRING

< ........

)

Replace pressure tap cover screw

25. Install Black LP gas regulator adjustment
with o-ring. See Figure 4.

cover screw

26. Mount conversion label on gas valve (found in spring
kit).
27. Turn electric and gas supply ON.
28. Cycle boiler to ensure proper operation and lighting.
29. Replace front panel.
NOTE: Complete following steps to provide proper
identification for customer service or technical support
issues.

BoilerSizeii

,

Orificeii

50,100,150,200

47

30. Copy serial number from old rating plate to new one.

125,170

49

31. Mount new rating plate adjacent to old one.

75

50

Parts for steps 16, 17, 25, and 26 are located in
Honeywell LP gas conversion kit HW#393691
(ECR #
1272030)
for VR8204r and VR8304 gas valves.

Manufacturer
ECR
Honeywell

PartNumber
PB00208
390686-36
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