LAARS NeoTherm NTV1000 - Install and Operating Manual - Manual (Page 18)

LAARS Heating Systems
Page 14
When an existing boiler is removed from a common
venting system, the common venting system is likely
to be too large for proper venting of the appliances
remaining connected to it.
At the time of removal of an existing boiler,
the following steps shall be followed with each
appliance remaining connected to the common
venting system placed in operation, while the other
appliances remaining connected to the common
venting system are not in operation.
1. Seal any unused openings in the common
venting system.
2. Visually inspect the venting system for proper
size and horizontal pitch and determine there is
no blockage or restriction, leakage, corrosion or
other deficiencies which could cause an unsafe
condition.
3. As much as possible, close all building doors
and windows. Also close all doors between
the space in which the appliances remaining
connected to the common venting system are
located and other spaces of the building. Turn
on any clothes dryers or other appliances not
connected to the common venting system.
Turn on any exhaust fans, such as range hoods
and bathroom exhausts, so they will operate
at maximum speed. Do not operate a summer
exhaust fan. Close any fireplace dampers.
4. Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust the
thermostat so the appliance will operate
continuously.
5. Test for spillage at the draft hood relief opening
after five minutes of main burner operation. Use
the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
6. After it has been determined that each appliance
remaining connected to the common venting
system properly vents when tested as outlined
above, return the doors, windows, exhaust fans,
fireplace dampers and any other gas burning
appliances to their previous conditions of use.
7. Any improper operation of the common venting
system should be corrected so that the installa-
tion conforms to the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 and/or CSA B149.1,
Installation Codes. When resizing any portion
of the common venting system, the common
venting system should be resized to approach the
minimum size as determined using the appropri-
ate tables and guidelines in the National Fuel
Gas Code, ANSI Z223.1 NFPA 54 and/or CSA
B149.1, Installation Codes.
3.5 outdoor Installation
The NeoTherm unit may only be installed in
applications where the outdoor temperature doesn’t
drop below freezing. For proper operation in
outdoor installations, the boiler must be equipped
with the inlet air and exhaust terminal kits listed in
Table 3C. The bottom panel cover plate must be
removed. Additional instructions are supplied with
the terminal kits.