Installation
900608-00 01/2019
Innovative Hearth Products
MHD40 Series Multi-View Direct-Vent Gas Fireplaces
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
31
Turn on burner and observe the individual
tongues of flame on the burner. Make sure
all ports are open and producing flame evenly
across the burner. If any ports are blocked, or
partially blocked, clean out the ports.
With gas line installed run initial system
checkout before closing up the front of the unit.
Follow the pilot lighting instructions provided
in the Installation and Operation Instructions
manual. For piezo igniter location see
Figure
51
on
Page 31
.
NOTE:
Lighting Instructions are also found on
the literature tag tied to the gas piping next to
the gas valve. To access the tag, open the lower
control compartment access panel (
Figure 51
)
by pushing in simultaneously the left and right
top corners of the door. (The door is hinged at
the bottom). Remove the bottom compartment
door by sliding the hinge pin, located at the
door’s left side, to the right until it disengages
from the left corner post hole. Remove the
modesty panel. To remove the modesty panel,
slide the panel forward until it contacts the
cabinet bottom panel, then lift straight up and
tilt forward. Remove the modesty panel care-
fully, so that none of the wires become loose
or disconnected.
Step 7. VERIFYING APPLIANCE OPERA-
TION
MILLIVOLT
Thermocouple
Hood Igniter Rod
3/8" Min
(9 mm)
Thermopile
Pilot
Nozzels
Figure 50
Figure 51
Piezo Igniter
Gas Valve
Modesty Panel
Control
Compartment
Access panel
ON/OFF
Switch
Hinge Pin
The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top 1/8" minimum (tip)
of the quick drop out thermocouple should be
engulfed in the pilot flame.
The flame should project 1" (26 mm) beyond the
hood at all three ports
(see
Figure 50
)
.
Replace
logs if removed for pilot inspection.
To light the burner; turn “ON” the remote wall
switch and rotate the gas valve control knob
counterclockwise to the “ON” position (“ON”
will be at the top side of the valve).
When first lighting the appliance, it will take a
few minutes for the line to purge itself of air.
Once purging is complete, the pilot and burner
will light and operate as indicated in the instruc-
tion manual.
Subsequent lighting of the appliance will not
require such purging. Inspect the pilot flame
(remove logs, if necessary, handling carefully).
Step 8. INSTALL VERMICULITE, GLOWING
EMBERS AND LOGS
Install the vermiculite, glowing embers and logs
per instructions on
Pages 45-47
.
CAUTION
Remove the carton support from the
control compartment before operat-
ing the appliance.
Millivolt Appliance Checkout
The pilot flame should be steady, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.
f i r e - p a r t s . c o m
