3
Installation and operation manual
–
DTHR-V9-2020
Important
This product is intended for installation by original equipment manufacturers of listed heating
equipment and should be on the positive pressure side of the circulating air blower. This heating unit
is designed for industrial or commercial use only. The installation must comply with the latest laws
and regulation for heating units;
CSA B149.1, ANSI Z223.1 / NFPA 54, to the electrical code C22.1/
NFPA 70 and to local regulations. All inside and outside electrical installation must comply with the
unit’s
electrical diagrams.
The electrical, gas and air flow ratings are described on the rating plate applied on the unit. Following
these rating is mandatory for a safe usage of the unit. To learn more, refer to the start-up instruction
and the operating sequence section of this manual.
Clearances to combustible material
A minimum clearance of
1
inch between the unit walls (built by others as described in these
instructions) and any combustible material is required on all side and top. A minimum clearance of
36
inches is required in front of the door to access controls and
18
inches around the flue vent. Install
the unit on a non-combustible floor.
Allocate enough space around the unit for maintenance and around the combustion air intake and
the inlet air hood to prevent harmful accumulation of snow.
Clearances to combustible materials
Position
Inch [mm]
Controls
36 [914]
Top*
1 [25]
Back*
1 [25]
Flue vent
18 [457]
Floor
Non-combustible
*: From
2’’
insulated walls if built as describe in these instructions (by other).
Caution
•
Installation, alteration, setting or improper maintenance can cause property damage, injury or
death. Read carefully the installation, start-up and maintenance instruction before installing
or repairing the unit.
•
Units installed within a building must have fresh air for combustion in sufficient quantity to
get a good combustion. Refer to CSA B149.1 installation code for Canada and ANSI Z223 for
USA for more information and minimum requirements.
•
Gas units must be connected to a flue vent properly sized to ensure proper and safe
operation.
•
When required to pipe to outdoor the regulator vent pipes kit must be terminated with a
downward elbow and a fine mesh screen in order to prevent blockage.
•
The instructions below show the recommended installation and usage that we have tested
and believe will be safe. If the OEM decides to not follow these instructions, it will be his
responsibility to test safeties and functionalities.
Code and regulation
