Damper Adjustment; The Secondary Air Intake; Typical Framing Dimensions - Newmac NS220 Installation, Operating And Service Manual

DAMPER ADJUSTMENT – NS 220 (Newmac Status) ONLY
The adjustment plate in the damper on the NS 220 Status may be set to change the idle rate. Open to increase and
close to decrease idle rate. Leave adjustment for a few days after changing to see if idle rate is better for your situation.
See diagram on page 16.
THE SECONDARY AIR INTAKE – NC100 (Newmac Classic) ONLY
The secondary air inlet allows the proper amount of combustion air to enter the firebox ABOVE the primary burning fuel.
In various stages of operation, an airtight heater may not receive enough combustion air to properly burn all the gases
that accumulate about the main combustion. It, therefore, is necessary in some manner to admit air to the area in such
a way as to burn these gases but not to burn any primary fuel.
The secondary air intake reduces creosote accumulation by keeping a steady flame burning in the stove above the
primary fuel. It is recommended upon installation of the stove that the adjusting plate, which is visible through the
opening in the back of the stove toward the flue collar, be adjusted to a point where the secondary air is almost closed.
Once this is set for a certain locality, there should be no problems what-so-ever in the fire holding overnight and
functioning properly.
Check the secondary air inlet. It is located in the back of the heater, near the flue collar. If a creosote condition occurs,
set the opening to ½".
MOBILE HOME INSTALLATION FOR NCM120 (Newmac Classic II, Mobile)
CHIMNEY AND COMBUSTION AIR DUCT PREPARATIONS
NCM120 (Newmac Classic II, Mobile) requires out door air and must be anchored to the floor.
Do not install the heater in a sleeping room, it should be located in the largest room of the mobile home. Only models
certified for mobile homes may be installed in mobile homes
The structural integrity of the mobile home's floor, wall, and ceiling/roof must be maintained. Locate the heater so that
the hole for the roof support and hole in the floor for the air inlet clear between joists.
The NCM120 Newmac Classic II, Mobile) room heater must be connected to a chimney complying with the requirements
for Type HT chimneys in the Standard for Chimneys, Factory-Built, Residential Type and Building Heating Appliance
UL103 (USA), or CAN/ULC S629, 650C Factory Built Chimneys (Canada). In USA use GSW Max! Super Chimney
model JSC 2100 UL components and in Canada use GSW Super Chimney Max! model JM 2100 ULC components.
The use of the specified components is important. Do not use other than the specified components.
1. Place heater onto location allowing for proper minimum clearances to combustibles as shown.
2. Mark center point where the chimney goes through the ceiling and roof.
3. On same center outline square X = 12" x 12" (305mm x 305mm) – USA, or 14" x 14" (355mm x 355mm) – Canada
framing opening as required by approved chimney support. Check to make sure no roof joist is in the way. Should
there be one, move Heater to the left or right so that it lines up with the newly located center point/frame opening.
Maintain vapor barrier.
4. Mark outline to the outside air duct on floor again, making sure no joist has to be cut. Frame opening and maintain
vapor barrier. Duct framing dimensions are 3-1/2" x 6" (89 x 152mm).

TYPICAL FRAMING DIMENSIONS

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