Typical Installation Sequence; Detailed Installation Steps; Step 1. Framing - Intertherm Millivolt DMSTNM-2 Installation Instructions Manual

Designer direct vent multi-open
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Vertical Vent Termination Clearances
Terminate single vent caps relative to
building components according to
Figure 4 .
Terminate multiple vent terminations accord-
ing to the installation codes listed above.
Horizontal Vent Termination Clearances
See Figure 5 for horizontal vent termination
clearances to any overhead combustible projec-
tion less than or equal to 2 ¹⁄₂" (64 mm) and
greater than 2¹⁄₂" (64 mm). For additional vent
location restrictions refer to Figure 8 on page 6 .

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation follows,
however, each installation is unique resulting
in variations to those described.
See the page numbers references in the follow-
ing steps for detailed procedures.
f i r e - p a r t s . c o m
Step 1. (page 5)
Construct the appliance
framing. Position the appliance within the
framing and secure with nailing brackets.
Step 2. (page 9) Route gas supply line to
appliance location.
Step 3. (page 9) Install the vent system and
exterior termination.
Step 4. (page 21) Millivolt Circuit Wiring
Step 5. (page 21) Make connection to gas
supply.
Step 6. (page 22) Install the log set, ver-
miculite and ceramic fiber chunks.
Step 7. (page 22) Checkout appliance op-
eration.
Step 8. (page 22) Install glass enclosure
panels.
Step 9. (page 23) Adjust burner primary air
shutter to achieve proper flame appearance.
Step 10. (page 23) Install the hoods.
Z\x
Z\x
*Note - When the building is clad with vinyl
siding, increase the vertical dimensions shown
in this figure by 6 inches (152 mm).
Note - See Figure 36 on page 16 for the exterior
wall recess allowances of the round and square
horizontal terminations.
Figure 5 - Side Elevation View
Figure 6

DETAILED INSTALLATION STEPS

The appliance is shipped with all gas controls and
components installed and pre-wired.
1 - Remove the shipping carton.
2 - Remove the top radiant panel (see Figure 6) .
3 - Lift the pressure relief plates and remove
the cardboard from underneath each of them.
4 - Open the control compartment access panel,
by actuating the spring-loaded magnetic catches
securing the panel, gently depressing the outer
top corners of the panel until the catches "pop"
the panel free and allowing it to swing out and
down to open.
5 - Locate the two (2) latches at the top of the
control compartment. To disengage the two
latches from the bottom vee-flange of the glass
enclosure panel, reach for the handles located
towards the back of the latches and pull the
handles down toward the front of the unit. Swing
the bottom of the door out and raise it slightly
to lift the top flange of the door frame away
from the appliance. Set the door aside protect-
ing it from inadvertent damage. See Figure 52
on page 22.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Step 1. FRAMING

Frame these appliances as illustrated in Figures
9 (DMSTNM-2), 10 (DMPFNM-2) on page 7. All
framing details must allow for a minimum clear-
ance to combustible framing members as shown
in Table 2 on page 4 .
If the appliance is to be elevated above floor level,
a solid continuous platform must be constructed.
Headers may be in direct contact with the appli-
ance top spacers but must not be supported by
them or notched to fit around them. All construc-
tion above the appliance must be self supporting,
DO NOT use the appliance for structural support.
Side Nailing Flanges
The fireplace should be secured to the framing
at the side(s)of the unit using the factory-
provided nailing flanges. Install the nailing
flanges - 8 (DMSTNM-2), 4 (DMPFNM-2) - as
shown in Figure 7 using the existing screws.
Position the fireplace within the framing. When
required, the flanges may be bent 90 degrees
by hand or with the assistance of a hammer.
Use wood screws to secure the nailing flanges
to the framing. See Table 2 on page 4 for
clearances of framing members to cabinet
parts in the nailing flange area. The nailing
flange itself is exempt from these clearances.
Floor Nailing Tabs
Secure the fireplace to the floor as shown in
Figure 7.
Figure 7
5

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