Unit Heater Installation; Combustion & Ventilation Air; Venting - Dyna-Glo GUH50NE/LE Operating Instructions And Owner's Manual

IN CANADA: In a confined area, the heater must be
installed in accordance with the CSA B149.1, Natural
Gas and Propane Installation Code. Be sure to
check with local codes and ordinances for additional
requirements.

UNIT HEATER INSTALLATION

Unit is shipped ready for installation. Unit may be
installed as shown in figure 1 depending on desired
location as governed by clearances, vent connection,
air direction, gas supply, electrical supply and service
accessibility. The appliance shall not be installed
downstream from evaporative coolers, air washers, or
cooling units of refrigerating systems.
1. Choose location for mounting brackets.
2. Remove and retain three screws along top edge of
front of unit.
3. Align screw holes on mounting bracket with holes
along top edge (either upright or inverted) of unit.
Secure one mounting bracket to front of unit with
retained screws. Secure other mounting bracket to
back of unit with screws retained on the back of unit.
3. To support unit, secure mounting bracket to ceiling
joist or truss. Unit may also hang on rods as shown in
figure 1.
INSTALL UNIT / UTILITY HEATER
MOUNTING
BRACKETS (2)
FIGURE 1
COMBUSTION & VENTILATION AIR
Adequate facilities for supplying air for combustion and
ventilation must be provided in accordance with the latest
edition of section 5.3, Air for Combustion and Ventilation,
of the National Fuel Gas Code, ANSI Z223.1, in the
U.S.A., CSA B149.1 Natural Gas and Propane Installation
Code, or applicable provisions of local building codes.
All gas fired appliances require air to be used for the
combustion process. In many buildings today, there is
a negative indoor air pressure caused by exhaust fans,
etc. If sufficient quantities of combustion air are not
available, the heater or another appliance will operate in
an inefficient manner, resulting in incomplete combustion
which can result in the production of excessive carbon
monoxide.
CAUTION: Insufficient combustion air can cause
headaches, nausea, dizziness, asphyxiation or
death
If indoor air is to be used for combustion, it must be
free of the following substances or the life of the heat
exchanger will be adversely affected: chlorine, carbon
tetrachloride, cleaning solvent, halogen refrigerants,
acids, cements and glues, printing inks, fluorides, paint
removers, varnishes, or any other corrosives.
A - GENERAL RECOMMENDATIONS AND
REQUIREMENTS
NOTE: The vent is a passageway, vertical or nearly
so, used to convey flue gases from an appliance, or its
vent connector, to the outside atmosphere. The vent
connector is the pipe or duct that connects a fuel-gas
burning appliance to a vent or chimney.
Unit heaters must be vented in compliance with all
local codes or requirements of the local utility, the
current standards of the (American) National Fuel Gas
Code, ANSI Z223.1 or (Canada) CSA B149.1 Natural
Gas and Propane Installation Code, and the following
instructions.
Do not intermix different vent system parts from
different manufacturers in the same venting system.
Vent connectors serving Category I and Category II
Appliances shall not be connected into any portion
of mechanical draft systems operating under positive
pressure.
A metal stamped/extruded transition is supplied with
this certified unit. It must not be modified or altered
and must be installed on the outlet of the induced draft
blower assembly prior to the installation of the vent or
SUPPORT
vent connector. Failure to comply with this requirement
RODS
will void the certification of the unit by the approval
agencies.
The heater and the venting system shall be inspected
once a year by a qualified service agency.
B - VERTICAL VENTS USING METAL VENT PIPE
- COMMERCIAL & RESIDENTIAL INSTALLATIONS
GHP compact unit heaters are listed as Category I
appliances for vertical vent installations.
1. US: GHP unit heaters are to be used with NFPA-
or ANSI-approved chimneys, U.L. listed type B-1
gas vents, single wall metal pipe, or listed chimney
lining system for gas venting where applicable, as
well as the modifications and limitations listed in
figure 2. Seal single wall vent material according
to the section A - General Recommendations and
Requirements.
Canada: Listed Category I Unit Heaters are to be
used with Type B gas vent. Minimum clearances of
gas vent from combustible material: 1 inch (25 mm)
2. The vent connector shall be 3" (76.2 mm) diameter on the 50
unit and 4" (102 mm) diameter on the 80 unit. In all cases, a
flue transition piece (supplied) is required to fit over the outlet
of the induced draft assembly on the appliance.

VENTING

GAS UNIT HEATER
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