Installation, Place (1) one center faux rocks "c" on pilot cover, Place (18) eighteen faux rocks "d" as shown below – Montigo H42DF User Manual
Page 29: Place (3) three faux rocks "e" as shown below, Place 11) eleven faux rocks "f" as shown below, Center faux rock "b" (flat side down), Spikes, 2-per rock

H*42DF Indoor Gas Fireplace
Page 29
XG0148 - 150204.1
Installation
4. Place (1) one center faux rocks "C" on Pilot cover.
Figure 30d. Placement 1-faux ceramic rock "C", (on Pilot cover).
5. Place (18) eighteen faux rocks "D" as shown below.
Figure 30e. Placement 18-faux ceramic rock "D", (as shown).
6. Place (3) three faux rocks "E" as shown below.
Figure 30f. Placement 3-faux ceramic rock "E", (as shown).
6. Place 11) eleven faux rocks "F" as shown below.
Figure 30g. Placement 11-faux ceramic rock "F", (as shown).
Figure 30h. Completed Placement. Note: You may have to adjust the Faux
rocks to produce a pleasing flame pattern and reduce sooting. (as shown)
4-Center faux Rock "B"
(flat side down)
Figure 30c. Placement 4-center faux ceramic rock "B".
3. Place the (4) four centre faux rocks "B" on the riser spikes, as
shown in the figure below.
Spikes, 2-per rock
Spikes, 2-per rock
Figure 30b. Placement 4-center faux ceramic rock "B" on spikes.