IHP MPI27 User manual

KIT CONTENTS
1 ea. #38 NG Main Burner Orifice (30,000 BTU’s)
1 ea. Instruction Sheet
TOOLS NEEDED
1/2” Open-End Wrench
Phillips Screwdriver
REPLACEMENT BURNER ORIFICE KIT
MPI27/MPI27CD, NATURAL GAS
INSTALLATION INSTRUCTIONS FOR REPLACING A BURNER ORIFICE
IN A MADISON PARK™ 27 DIRECT-VENT GAS FIREPLACE INSERT
P/N 900419-00
Rev. NC, 02/2015
HEARTH PRODUCTS
KITS AND ACCESSORIES
IMPORTANT
The burner orifice provided in this kit is only for
use at elevations of 0 to 2,000 feet (610 M) in the
USA and 0 to 4,500 feet (0-1372 M) in Canada. At
higher elevations the BTU input must be de-rated
by 4% for every 1,000 feet (305 M) to maintain
the proper ratio of gas to air. If the installer must
convert the unit to adjust for varying altitudes, a
deration information sticker must be filled out by the
installer and adhered to the appliance at the time
of the conversion. Contact your local gas supplier
for deration requirements for your area.
Madison Park 27 Replacement NG Burner Orifice Kit
Cat. No. Description
H9158 MPI27 and MPI27CD Replacement NG Burner Orifice Kit
INSTALLATION INSTRUCTIONS
Step 1. TURN OFF THE GAS SUPPLY TO THE APPLIANCE. UNPLUG THE
POWER CORD.
Step 2.Remove the facade by lifting it up and away from the unit to
unseat the facade hooks from the mounting slots on the unit.
Place the facade face down on a soft, non-abrasive surface to
prevent damage.
Step 3.Remove the glass door by unhooking the latch at the upper right
and left of the door (see Figures 1 and 2). The top of the door
can now be pulled away from the firebox and rotated up and off
of the appliance.
Figure 1 - Door Latches
SEE DETAIL A
See Detail A
Detail A
If you encounter any problems, need clarification of these instruc-
tions or are not qualified to properly install this kit, contact you
local distributor or dealer.
READ THIS INSTRUCTION SHEET IN ITS ENTIRETY BEFORE BEGIN-
NING THE INSTALLATION.
ALL WARNINGS AND PRECAUTIONS IN THE INSTALLATION AND
OPERATION MANUAL PROVIDED WITH THE APPLIANCE APPLY TO
THESE INSTRUCTIONS.
TURN OFF THE APPLIANCE AND ALLOW IT TO COMPLETELY COOL
BEFORE PROCEEDING.
1

Burner
Lift Out Burner
Figure 4
Figure 3 Support Panels
Rear Support
Panel
Burner
MPI27CD
MPI27
Figure 2 - Door Removal
REMOVE BURNER
Step 4.MPI27, Log Burner Removal (see Figure 3):
a. Remove the left and right log support panels by lifting up the front
edge to unseat the tab, then by pulling straight out to unseat the rear
tab.
b. Remove the two phillips screws holding burner assembly to the fire
box bottom. While lifting up on right side, shift burner assembly to
the right until it releases from the air shutter.
c. Remove shutter tube by lifting off of adjustment arm stud.
Step 5. MPI27CD Burner Removal (see Figure 4):
a. Remove accent glass from front of log support if already installed.
b. Remove one phillips screw and washer near the front right side of
burner.
c. While lifting up on right side, shift burner assembly to the right until
it releases from the air shutter.
2
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE NOT TO SCALE.

Step 6. Using a 1/2” open-end wrench, remove the burner orifice.
Replace it with the #38 NG burner orifice that is supplied in
this kit. Use pipe sealing compound on the threads of the new
orifice (see Figure 5).
Figure 5 - Replace Burner Orifice
Figure 6
1/2” End Wrench Burner Orifice
Step 7. MPI27:
a. Reinstall the shutter tube on the adjustment arm stud.
b. Reinstall the burner making sure the air venturi tube is fully seated
on the orifice. This can be verified by looking through the left air
opening in the burner (see Figure 6).
c. Ensure the air shutter is properly adjusted (follow instructions
in the Installation and Operation manual).
Step 8. MPI27CD:
a. Reinstall the burner making sure the air venturi tube is fully
seated on the orifice, and shutter engages the adjustment arm
stud. This can be verified by looking through the left gap at the
front of the burner support panel (see Figure 6).
b. Ensure the air shutter is properly adjusted (follow instructions
in the Installation and Operation manual).
CAUTION: The air shutter should never be set so as to make the
tips of the flames sooty or create sooting on the viewing glass,
logs, or heat exchanger. If soot begins to form after burning,
the air shutter should be opened gradually until the sooting
condition stops. Gas quality and gas pressure may vary, which
can affect the burning characteristics of the insert.
MPI27 (LOG BURNER) MPI27CD (MEDIA BURNER)
Figure 7 - Burner Flame Appearance
No Blue Flame
Center
Soot at
Flame Tip
Dark Orange
Flame
IMPROPERLY
BURNING FLAME
Soot above
Flame Tip No Soot at
Flame Tip
PROPERLY
BURNING FLAME
Semi-Transparent
Yellow Flame
Blue Flame
Center
Ports on Pan
Burner Assembly
Moving shutter adjustment lever to the left will
open shutter, to the right will close shutter.
Shutter Adjustment Detail
OPEN CLOSED
Step 9. Reinstall the log set or glass media (depending on model). See
Log Set Installation or Glass Media Installation in the Installation
and Operation Manual.
Step 10.Reinstall the glass door and facade.
Step 11.Light the appliance per the lighting instructions label on appliance
(located on the left side of the appliance, above the control panel)
or lighting instructions in the Installation and Operation Manual.
Inspect for proper burner flame appearance. See Figure 7 or
refer to the Installation and Operation Manual.
3
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE NOT TO SCALE.

4
Printed in U.S.A. © 2015 Innovative Hearth Products
P/N 900419-00 Rev. NC 02/2015
IHP reserves the right to make changes at any time, without notice, in design, materials,
specifications, prices and also to discontinue colors, styles and products. Consult your local
distributor for fireplace code information.
1508 Elm Hill Pike, Suite 108 • Nashville, TN 37210