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COMBAT
®
CTCU UNIT HEATER 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 heater
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 heater is designed for heating 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, etc. must be
thoroughly understood before proceeding with the
installation.
SECTION 2: INSTALLER RESPONSIBILITY
• To install the heater, as well as the gas and elec-
trical supplies, in accordance with applicable
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 heater in accordance with the
clearances to combustibles of this heater.
• To furnish all needed materials not furnished
as standard equipment.
• To plan location of supports, flues and air
intakes.
• To provide access to burners for servicing.
• To provide the owner with a copy of this
Installation, Commissioning, Operation and
Service Manual.
• To never use heater as support for ladder 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
heater near combustible materials such as wood,
paper, rubber, etc. A wall tag 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 heater.
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
compounds are frequently used in refrigerants, cleaning
agents, solvents, etc. If these compounds enter the air
supply of the burner, the lifespan of the heater
components will be greatly reduced. Warranty will be
invalid if the heater is exposed to halogenated
hydrocarbons.
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 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.