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650.75-N4U
prevent oversizing problems for the new combination of units.
Refer to the National Gas Code (ANSI Z223.1) or CAN/CGA
B149.1 or.2 Installation Code (latest editions).
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:
1.
Seal any unused openings in the venting system.
2.
Inspect the venting system for proper size and horizontal
pitch, as required in the National Fuel Gas Code, ANSI
Z223.1, or the CAN/CGA B149 Installation Codes and
these instructions. Determine that there is no blockage
or restriction, leakage, corrosion or other deficiencies
which could cause an unsafe condition.
3.
Insofar as is practical, close all building doors and win-
dows and all doors between the space in which the appli-
ance(s) is located and other spaces of the building. Turn
on clothes dryers. Turn on any exhaust fans, such as
range hoods and bathroom exhausts, so they shall oper-
ate at maximum speed. Do not operate a summer
exhaust fan. Close fireplace dampers.
4.
Follow the lighting instructions. Place the appliance
being inspected in operation. Adjust thermostat so the
appliance shall operate continuously.
5.
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.
6.
After it has been determined that each appliance con-
nected 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.
7.
If improper venting is observed during any of the above
tests, the venting system must be corrected.
8.
Any corrections to the common venting system must be
in accordance with the National Fuel Gas Code Z223.1
or CAN/CGA B149.1 or.2 Installation Code (latest edi-
tions). If the common vent system must be resized, it
should be resized to approach the minimum size as
determined using the appropriate tables in Appendix G
of the above codes.
SPECIFIC UNIT INFORMATION
LIMITATIONS & LOCATION
This furnace should be installed in accordance with all
national and local building/safety codes and requirements, or
in the absence of local codes, with the National Fuel Gas
Code ANSI Z223.1 or CAN/CGA B149.1 or.2 Installation
Code (latest editions), local plumbing or waste water codes,
and other applicable codes.
4
Downflow/horizontal models are AGA/CGA listed for down-
flow application into a manufactured (mobile) home.
Upflow models or horizontal applications are not approved for
mobile homes.
A manufactured (mobile) home installation must conform with
the Manufactured Home Construction and Safety Standard,
Title 24 CFR, Part 3280, or when this standard is not applica-
ble, the Standard for Manufactured Home Installations (Man-
ufactured Home Sites, Communities and Set-Ups), ANSI
A225.1, and/or CAN/CSA-Z240 MH Series, Mobile Homes.
CLEARANCES FOR ACCESS
Ample clearances should be provided to permit easy access
to the unit. The following minimum clearances are recom-
mended:
1.
Twenty-four (24) inches between the front of the furnace
and an adjacent wall or another appliance, when access
is required for servicing and cleaning.
2.
Eighteen (18) inches at the side where access is
required for passage to the front when servicing or for
inspection or replacement of flue/vent connections.
NOTE : In all cases, accessibility clearances shall take prece-
dence over clearances for combustible materials where
accessibility clearances are greater.
Do not install the furnace in an unconditioned
space or garage that could experience ambient
temperatures of 32F (0C) or lower. For application
in below freezing locations, See "BELOW FREEZ-
ING LOCATIONS" on page 5
The furnace is not to be used for temporary heat-
ing of buildings or structures under construction.
This unit must be installed in a level (1/4") position
side-to-side and front-to-back to provide proper
condensate drainage.
Do not allow return air temperature to be below
55°F for extended periods. To do so may cause
condensation to occur in the main fired heat
exchanger.
035-14370-000
Unitary Products Group
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