Installation Guide

9
Suspended Furnace
EXISTING FURNACE REMOVAL
NOTE: When an existing furnace is removed from a venting system
serving other appliances, the venting system may be too large to
properly vent the remaining attached appliances.
The following vent testing procedure is reproduced from the
American National Standard/National Standard of Canada for Gas-
Fired Central Furnaces ANSI Z21.47-Latest Edition, CSA-2.3-Latest
Edition Section 1.23.1. The following steps shall be followed with
each appliance connected to the venting system placed in
operation, while any other appliances connected to the venting
system are not in operation:
a. Seal any unused openings in the venting system;
b. Inspect the venting system for proper size and horizontal
pitch, as required by the National Fuel Gas Code, ANSI
Z223.1 or the CAN/CSA B149 Installation Codes and these
instructions. Determine that there is no blockage or
restriction, leakage, corrosion and other deficiencies
which could cause an unsafe condition;
c. In so far as practical, close all building doors and
windows and all doors between the space in which the
appliance(s) connected to the venting system are located
and other spaces of the building. Turn on clothes dryers
and any appliance not connected to the venting system.
Turn on any exhaust fans, such as range hoods and
bathroom exhausts, so they shall operate at maximum
speed. Do not operate a summer exhaust fan. Close
fireplace dampers;
d. Follow the lighting instructions. Place the appliance
being inspected in operation. Adjust thermostat so
appliance shall operate continuously;
e. Test for draft hood equipped appliance spillage at the
draft hood relief opening after 5 minutes of main burner
operation. Use the flame of a match or candle;
f. After it has been determined that each appliance
connected to the venting system properly vents when
tested as outlined above, return doors, windows, exhaust
fans, fireplace dampers and any other gas burning
appliance to their previous conditions of use;
g. If improper venting is observed during any of the above
tests, the common venting system must be corrected.
HORIZONTAL I NSTALLATION
Recomended Installation Positions
For
horizontal installations,
insert the
#8 x 5/8 screw
from the
literature package.
Line contact to framing is permitted when installed in the horizontal
configuration. Line contact is defined as the portion of the cabinet
that is formed by the intersection of the top and side. ACCESSIBILITY
CLEARANCE, WHERE GREATER, SHOULD TAKE PRECEDENCE OVER
MINIMUM FIRE PROTECTION CLEARANCE. A gas-fired furnace for
installation in a residential garage must be installed so that the
ignition source and burners are located not less than eighteen
inches (18") above the floor and is protected or located to prevent
physical damage by vehicles. A gas furnace must not be installed
directly on carpeting, tile, or other combustible materials other
than wood flooring.
FURNACE S USPENSION
If suspending the furnace from rafters or joist, use 3/8" threaded
rod and 2”x2”x3/8” angle iron as shown below. The length of rod
will depend on the application and the clearances necessary.