Installation
900414-00 12/2015
Innovative Hearth Products
MHD 35/40 Series Direct-Vent Gas Fireplaces
49
Figure 43 - Millivolt Pilot
Figure 44 - Orifice
Pilot
Orifice
Pilot
Orifice
12.
Use pipe joint compound or Teflon
®
tape on all pipe fittings before installing.
NOTE:
Ensure propane resistant compounds are used in propane applications, do not use pipe joint compounds
on flare fittings.
13.
Retrieve the burner and hold the venturi tube above the orifice. Place the shutter adjusting rod in the slot of the
shutter arm
(
Figure 39, Page 41
)
. Set the burner assembly into its position and secure the trapezoidal plate with
the two screws previously removed.
14.
Reinstall the baffle with the two baffle securing screws.
15.
Reassemble the remaining components.
16.
Turn on gas supply and test for gas leaks
(
Page 40
)
.
17.
Relight the main burner. The lighting instructions can be found on the lighting label in the control compartment
or
Page 65
. Verify proper burner ignition and operation
(
Page 40
)
.
18.
Inspect the pilot system for proper flame. The pilot flame should engulf the flame sensor
(
Figure 38
).
19.
Using a manometer, test the inlet and manifold gas pressures
(
Tables 3
and
4, Page 9
)
.
NOTE:
Always test pressures with the valve regulator control at the highest setting.
Initialize the Remote Control System
After completing fireplace installation, initialize the remote control system before operating the fireplace.
1. Insert the three (3) provided AAA batteries into the battery bay in the remote control. Correctly align polarity (+/–).
2. Insert the (4) provided AA batteries into the receiver battery bay (behind the wall switch plate). Correctly align
polarity (+/–).
3. Position the wall switch receiver three-position slider switch in the REMOTE position.
4. On the remote control, press the ON button.
