LAARS Mini-Therm JVS (Sizes 50-225) - Install and Operating Manual - Manual (Page 5)

Mini-Therm JV Page 5
Vent Damper (JVS only):
1. Mini-Therm JVS boilers have built-in draft
diverter for natural draft operation.
2. Find the vent damper box which is located in the
boiler package.
3. Install the vent damper directly to the top of the
draft diverter outlet with the damper operator
facing to the front of the boiler, and with the flow
direction arrow pointing upward. Use the vent
damper wire harness provided with the boiler
to connect the vent damper to the boiler. The
bracket end of the harness should be connected to
the vent damper actuator.
4. For Model JVS only: Install the metal plug
provided with the vent damper onto the damper
plate hole.
5. Do not modify the automatic vent damper device.
It is very important that no other vents are closed.
Provide at least six inches clearance between
the automatic vent damper and combustible
construction, and be sure to allow access for
servicing the damper.
Temperature/Pressure Gauge: Install the temp/
pressure gauge provided in the parts box.
2B. Boiler Placement
1. The boiler must be placed to provide clearances
on all sides for maintenance and inspection. There
must also be minimum distances maintained from
combustible surfaces. Avoid locations which can
be damaged by water or moisture.
2. A minimum of 15" (381mm) access must be
available in front of the boiler for burner tray
removal. Consult local codes for clearances to hot
water pipes and accessories.
3. If the boiler is to be installed in a garage, all
burners and burner ignition devices must have
a minimum 18" (457mm) clearance
above the floor.
4. Boilers can be installed in a closet as long as
the minimum clearances shown in Table 2 are
observed. Special attention should be paid to
clearances between the front of the boiler and the
closet door when it is closed (see Figure 2).
2C. Flooring
JVS model boilers can only be installed on
noncombustible flooring.
JVH model boilers are designed and certified for
installation on a combustible floor.
All boilers must be installed on a level floor and
must NEVER be installed on carpeting.
NEVER store objects on or around the boiler.
Noncombustible flooring is defined as flooring
material and surface finish not capable of being
ignited and burning and with no combustible materials
against the underside. Acceptable materials are those
consisting entirely of a combination of steel, iron,
brick, tile, concrete, slate, glass or plaster.
The JVS model boilers can be installed on a
combustible floor if a noncombustible base
assembly, available from Laars, is used. See the JVS
Parts List at the back of this manual for the appropriate
Noncombustible Base Kit part number.
Figure 1. Typical Combustible Floor Installation.
As an alternative to the Laars Noncombustible Base
Kit, in the United States the National Fuel Gas
Code allows a heater to be placed on a combustible
surface when there is a platform under the heater
made of hollow masonry no less than 4 inches (102
millimeters [mm]) thick, covered with sheet metal at
least 24 gauge thick and extending beyond the full
WARNING
This boiler is intended for indoor installation only.
Do not install this boiler in a location subject to
negative pressure, or improper operation will occur.
Avertissement
Cette chaudière est destiné pour une installation
intérieure uniquement. Ne pas installer cette
chaudière dans un endroit soumis à pression
négative, ou fonctionnement incorrect se produira
Caution
Do not force motor operation when operator is
fastened to the damper by moving the damper
blade, turning the shaft or by turning the position
indicator.
Attention
Ne pas tourner le registre manuellement avec
ou sans courant électrique ou le moteur sera
endommagé.