Montigo M38DV-ST (MH) User manual

Check local codes and
read all instructions
prior to installation.
Leave this manual with
the owner.
M38DV-ST (MH)
Conversion Kits
This appliance may be installed as an OEM installation in a manufactured
(mobile) home and must be installed in accordance with the manufacturer's
instructions and the manufactured home construction and safety standard,
Title 24 CFR, Part 3280 or Standard for Installation in Mobile Homes, CAN /
CSA Z240 MH.
This appliance is only for use with the type(s) of gas indicated on the rating
plate. A conversion kit is supplied with the appliance.
Warning: If the information in these instructions is not followed
exactly, a fire or explosion may result causing property damage,
personal injury or loss of life.
Do not store or use gasoline or other ammable vapors and liquids in the
vicinity of this or any other appliance.
 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 re department.
Installation and service must be performed by a qualified installer, service agency or
the gas supplier.
RCV708
Conversion to LP
RCV808
Conversion to Natural Gas
Manufactured/ Mobile Home
Approved Fireplace

P/N XG0634
Page 2
M38DV-ST (MH) Gas Conversion Kit
Table Of Contents
General Information ................................................................. 2
Parts list .................................................................................... 2
A.Conversion
1. Before you begin........................................................ 3
2. Ember Burner............................................................. 3
3. Main Gas Regulator ................................................... 3
4. Pilot Assembly............................................................ 3
5. Main Burner................................................................ 4
B. Check the Gas Pressure...................................................... 4
C. Adjusting the Pilot Burner................................................... 4
Operation................................................................................... 5
General Information
This gas conversion kit contains the necessary components for field
conversion of an approved Montigo fireplace from Natural Gas (NG)
to Liquid Propane (LP), or from LP to NG. See this kit for use with the
following manufactured (mobile) home models:
M38DV-ST (MH)
A manufactured (mobile) home OEM installation in the United States
must conform with the Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280, or, when such a standard is not
applicable, the Standard for Manufactured Home Installations, ANSI
/ NCSBCS A225.1. In Canada, the installation must conform to the
Standard for Gas Equipped Recreational Vehicles and Mobile Hous-
ing, CSA Z240.4.
The installation of this unit must also conform with local codes or, in
the absence of local codes, with the American National Fuel Gas
Code, ANSI Z223.1, or the Canadian Installation Code, CAN / CGA
B149.
WARNING!
This conversion kit shall be installed by a qualified service
agency in accordance with the manufacturer's instructions
and all applicable codes and requirements of the authority
having jurisdiction. If the information in these instructions
is not followed exactly, a fire, explosion or production of
carbon monoxide may result causing property damage,
personal injury or loss of life. The qualified service agency
is responsible for the proper installation of this kit. The
installation is not proper and complete until the operation
of the converted appliance is checked as specified in the
manufacturer's instructions supplied with this kit.
Parts List
Quantity Description
2 Sleeves (main burner)
1 Pilot burner orifice
1 Ember burner orifice
1 Main burner orifice
1 Label for rating plate indicating conversion
1 Label for gas control valve indicating conversion

Page 3
P/N XG0634
M38DV-ST (MH) Gas Conversion Kit
Gas Conversion Instructions
Pilot Assembly:
Ember Burner:
3. Disconnect the 1/4" tubing from the fitting on the underside of
the pan base. Disconnect the fitting from the inlet side of the gas
control valve.
4. Spin off the coupling just above the tee. The gas valve assembly
will drop out of the way, allowing access to the coupling.
5. Uncrew the coupling assembly from the pan base. The orifice is
located at top end of coupling. Unscrew it and install the orifice
from the package marked 'Ember Burner Orifice' in this kit to
convert to the new gas.
Main Gas Control Regulator:
6. Before re-assembling the gas tubing, the gas valve must be
converted to operate on the new gas. Change the regulator on
the SIT Nova gas valve.
Note: This fireplace has a flip-over regulator, and needs no extra
parts to convert.
7. To convert from one gas to another, simply unscrew the regula-
tor, turn over and reinstall. One face of regulator is stamped NG,
the other is marked LPG. The outer face of screw will indicate
the correct gas.
8. Reassemble the gas fittings.
Figure 3. The Pilot Assembly.
Figure 4. The Pilot Assembly, with cap off. The pilot hood will snap
off; the orifice must be removed with an allen key.
CAUTION - Before you begin:
1. Shut off gas at the shut-off valve and disconnect the electrical
supply (if used).
2. Remove the glass door as shown in the installation instruc-
tions
and remove the logs. Flip down the lower trims to access the
A. Conversion
Figure 1b. Changing the ember burner orifice.
Figure 1a. Accessing the ember burner orifice.
9. Remove pilot hood/ orifice cap by pulling it off the pilot assembly.
The cap will snap off with slight pressure; the orifice must be
removed with an allen key. (See Figure 4)
10. Install the new orifice from the package marked 'Pilot Orifice' in
this kit to convert to the pilot to the new gas. Tighten the orifice
securely with an allen key. Re-attach the pilot hood, making sure
the notch in the hood lines up with the tab on the pilot assembly.
Figure 2. Sit 820 Convertible Valve.

P/N XG0634
Page 4
M38DV-ST (MH) Gas Conversion Kit
Gas Conversion Instructions
B. Checking the Gas Pressure
17. To check the Inlet and Manifold gas pressures, use a Water
Column Pressure Gauge with 5/16" dia. tubing. Make sure the
gas shut-off valve is closed, then attach the gauge to
the Manifold Pressure Test Connection by loosening the screw
shown in Figure 7. The tubing must be tight in the connection to
prevent gas leaks. Measure the Manifold Pressure and compare
the value against the chart below.
Figure 7. Sit Nova 820 gas valve.
Natural Gas Liquid Propane
Manifold Pressure (min.) 3.5" W.C. 10" W.C.
Inlet Pressure (min.- max.) 5.5" - 14" W.C. 11" - 14" W.C.
" W.C. = inches water column
18. Turn off the fireplace and close the shutoff valve. Remove the
test gauge. Re-tighten the test connection screw to prevent gas
leakage.
19. Repeat the procedure for the Inlet Pressure.
20. If the pressure readings are not within the limits set out, contact
the factory. If the pressure readings are correct, ensure that both
test connection screws are tightened securely, to prevent a gas
leak.
C. Pilot Burner Adjustment
21. Locate the Pilot Adjustment Screw. (See figure 7)
22. Adjust pilot screw to provide properly sized flame. To increase the
flame, turn the screw counterclockwise. To decrease the flame,
turn it clockwise. (The flame should impinge on the thermocouple
and thermopile, as shown in Figure 8)
Figure 8. Pilot Burner
Figure 5. Main Burner.
Manifold Pressure
Test Connection
Pilot Adjustment Screw
Inlet
Pressure
Power
Generator
Wall Switch
Main Burner
11. Remove cover plate on both ends of the main (center) burner
and remove main burner tube. (See figure 5)
12. Loosen the set screws at each end of the burner tube. Slide the
sleeves out of each end of the tube and replace them with the
ones from the package marked 'Main Burner Sleeves' in this kit.
(See Inset, Figure 6.) Re-tighten the set screws.
13. Remove the orifices from the orifice holder at each end and
replace them with the new orifices from the package marked
'Main Burner Orifices' in this kit. (See Figure 6.) Make sure the
Orifices are tightened securely to prevent gas leaks.
14. Re-install the main burner, making sure you center the
burner between the two orifices. Ensure that the burner's flame
ports are pointed 90 degrees to the horizontal. Secure the burner
by re-attaching both cover plates.
Checking Your Conversion
15. Leak test using a soap solution with main burner turned on. Coat
pipe and tubing joints, gasket etc. with soap solution. Bubbles
indicate leaks. Tighten any areas where the bubbles appear until
the bubbling stops completely.
16. Light the fireplace pilot, and turn the gas control knob to the ON
position. Ensure all three burners light properly.
6. Re-Assembly
Replace the logs, re-install the door and the door surround.
Figure 6. Changing main burner orifice.
Inset. Remove screw
to release sleeve.

Page 5
P/N XG0634
M38DV-ST (MH) Gas Conversion Kit
WARNING: If you do not follow these instructions exactly, a re or explosion
may result causing property damage, personal injury or loss of life.
If you cannot reach your gas supplier, call the Fire De-
partment.
C. Use only your hand to push in or turn the gas control knob.
Never use tools. If the knob will not push in or turn by hand,
don't try to repair it, call a qualified service technician. Force
or attempt to 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 control which has been under water.
A. This appliance has a pilot which must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING 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.
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 neighbour's
phone. Follow the gas supplier's instructions.
Operating Instructions
For Your Safety - READ BEFORE LIGHTING:
1. STOP! Read the safety information above on this label.
2. Flip down the lower trims.
3. Push in gas control knob and turn clockwise to "OFF."
4. Wait five (5) minutes to clear out any gas. Smell for gas,
including near the floor. If you then smell gas, STOP! Follow
"B" in the safety information above on this label. If you don't
smell gas, go to the next step.
5. Locate pilot burner (See illustration at right.) and follow
steps below.
6. Turn knob on gas control counterclockwise to "PI-
LOT."
7. Push in gas control knob completely and hold. Light with
Piezo Igniter button. Continue to hold the control knob in for
about (1) minute after the pilot is lit. Release the knob and it
will pop back up. Pilot should remain lit. If it goes out repeat
steps 3 through 8.
If knob does not pop up when released. Stop and
immediately call your service
technician or gas supplier.
If the pilot will not stay lit after
several tries, turn the gas
control knob to "OFF" and
call your service technician or
gas supplier.
8. Push in gas control knob and turn counterclockwise
to "ON."
9. Flip up the lower trim.
10.Turn on remote switch to ignite fire.
Lighting Instructions:
Gas Control Knob
(Shown in "Pilot" postion.)
NOTE: Knob cannot be turned from
"PILOT" to "OFF" unless knob is
pushed in slightly. Do not force.
To Turn Off Gas To Appliance:
1. Turn off remote switch.
2. Flip down the lower trim.
3. Push in gas control knob slightly and turn clockwise
to "Off". Do not force.
4. Flip up the lower trim.

Canadian Heating Products Inc.
Surrey, BC V3W 2V6
Montigo Del Ray Corp.
Ferndale, WA 98248
XG0634 Rev. 03 - 01/2002