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DUALAIR
®
HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL
2
SECTION 1: HEATER SAFETY
Your Safety is Important to Us!
This symbol is used throughout the
manual to notify you of possible fire,
electrical or burn hazards. Please pay
special attention when reading and
following the warnings in these sections.
Installation, service and annual inspection of the
DualAir
®
unit must be done by a registered installer/
contractor qualified in the installation and service of
gas-fired heating equipment.
Read this manual carefully before installation,
operation, or service of this equipment.
This DualAir
®
unit is designed for heating and
cooling non-residential indoor spaces. Do not install
in residential spaces. These instructions, the layout
drawing, local codes and ordinances, and applicable
standards that apply to gas piping, electrical wiring,
venting, refrigerant installation, etc. must be
thoroughly understood before proceeding with the
installation.
SECTION 2: INSTALLER RESPONSIBILITY
• To supply and install a suitable condenser unit
along with associated refrigerant circuits in
accordance with the requirements of
all relevant local and national codes.
• To install the DualAir
®
unit, as well as the gas
and electrical supplies, in accordance with appli-
cable specifications and codes. Roberts-Gordon
recommends the installer contact a local
building inspector, Fire Officer or insurance
company for guidance.
• To use the information given in the manual
together with the local and national codes to
perform the installation.
• To install the DualAir
®
unit in accordance with the
clearances to combustibles of this DualAir
®
unit.
• To furnish all needed materials not furnished
as standard equipment.
• To plan location of supports, flues and air
intakes.
• To provide access for servicing.
• To provide the owner with a copy of this
Installation, Commissioning, Operation and
Service Manual.
• To never use the DualAir
®
unit as support for lad-
der or other access equipment and never hang
or suspend anything from heater.
• To ensure that there is sufficient ventilation in the
area to comply with the requirements of
all relevant local and national codes.
2.1 Clearances to Combustibles
In all situations, clearances to combustibles must be
maintained. Caution must be used when running the
DualAir
®
unit near combustible materials such as
wood, paper, rubber, etc. A wall tag (P/N 91040089)
is on the back cover of this manual as a permanent
reminder of the safety instructions and the
importance of the required clearances to
combustibles. Affix the tag on a wall near the
DualAir
®
unit.
2.2 Corrosive Chemicals
Roberts-Gordon cannot be responsible for ensuring
that all appropriate safety measures are undertaken
prior to installation; this is entirely the responsibility
of the installer. It is essential that the contractor, the
sub-contractor, or the owner identifies the presence
of combustible materials, corrosive chemicals or
halogenated hydrocarbons* anywhere in the
premises.
* Halogenated Hydrocarbons are a family of chemical
compounds characterized by the presence of halogen
elements (fluorine, chlorine, bromine, etc.). These com-
pounds are frequently used in refrigerants, cleaning
agents, solvents, etc. If these compounds enter the air
supply of the burner, the lifespan of the DualAir
®
unit
components will be greatly reduced. Warranty will be
invalid if the heater is exposed to halogenated hydrocar-
bons.
2.3 National Standards and Applicable Codes
All appliances must be installed in accordance with
the latest revision of applicable standards and local
and national codes. This refers also to the electric,
gas, refrigerant and venting installation. Note:
Additional standards for installations in public
garages, aircraft hangars, etc. may be applicable.
CAUTION
Do not use heater in an area containing corrosive
chemicals.
Corrosive chemicals will damage the burner and
heat exchanger parts.
Failure to follow these instructions can result in
property damage.