Operation; D.1 Start-Up; D.2 Shut Down; D.3 Multi-Heater Start-Up - Thermon Cata-Dyne Instructions D'installation Et D'utilisation

D.

OPERATION

All Cata-Dyne™ heaters are supplied with a safety shut-off valve/
Thermocouple assembly to ensure the safe operation of the heater.
Under no circumstances should the reset button be held or locked
into the depressed position by use of a mechanical restraint.
A tamper resistant model safety shut-off valve is available if
desired.
D.1 Start‑up
1. Ensure the heater has been installed according to all
instructions and relevant codes.
2. Turn on the main gas supply to the system.
3. If the heater is equipped with a low-flow thermostatic
temperature controller (capable of flow capacities below
30,000 Btu/hr), rotate the dial completely clockwise to the
fully open position.
4. If the heater is equipped with a high-flow thermostatic
temperature controller (capable of flow capacities above
30,000 Btu/hr), rotate the dial completely counterclockwise
to the fully open position.
5. Turn on the power to the electrical elements.
6. After 15 – 20 minutes, depress the reset button on the top
of the 100% safety shut-off valve. The button should return
E. 12V HAZARDOUS ELECTRICAL INSTALLATIONS
Vehicle located outside
hazardous area
Figure 7 – Vehicle location
Class I, Division 1 (Zone 1)
Class I
Division 1 (Zone 1)
Class I, Division 2 (Zone 2)
Class I
Division 2 (Zone 2)
Figure 8 – Classes and Figure divisions
15'.
10'.
4.6 m
3.0 m
18"
0.46 m
10' 15'
3.0 m 4.6 m
Class I, Division 2 (Zone 2)
Class I Division 2 (Zone 2)
18 in. (0.46 m) above ground.
Subject to possible transient vapour.
18 in. (0.46 m) above ground
Subject to possible
transient vapour
to the original position and internally open the valve and
allow gas to flow to the heater. If the valve does not stay
open when the reset button is released, it may be necessary
to wait an additional few minutes and then depress the
reset button again. This will allow the electrical elements
additional time to warm up.
7. When the catalytic reaction is well established, turn off the
electrical power to the elements, and wait for an additional
amount of time.
8. If the heater is equipped with a thermostatic temperature
controller, it can be set to the desired setting after the
catalytic reaction has been established for at least one hour.
D.2 Shut Down
Turn off the gas supply to the heater.
D.3 Multi‑Heater Start‑up
Cata‑Dyne™ heaters can also be purchased/installed in multi‑heater
assemblies. If these assemblies are 12V, each heater must be
started individually. This ensures the correct voltage and current will
be reaching the heater from the power supply.
Most oil and gas production buildings have an area classification
as follows:
1. Class I, Division 1 (Zone 1), within the building. Refer to
Figures 7 and 8, page 7.
2. Class I, Division 2 (Zone 2), up to 10 ft (3 m) from the building
in any direction. Refer to Figures 7 and 8, page 7.
3. Class I, Division 2 (Zone 2), between 10 ft (3 m) and 25 ft
(7.6 m) from the building in all directions at an elevation
of 18" (0.45 m) above the ground. Refer to Figures 7 and 8,
page 7
4. Connection to the power supply must be outside of
the Class I, Division 2 location (Figure 9, page 7). All
electrical apparatus and wiring within this area must
conform to the appropriate codes.
Standard
battery cable
OUTSIDE BUILDING - Class I Division 2
area use appropriate electrical ttings
25'
7.6 m
Figure 9 – Power supply connector (see Caution below).
CAUTION. Connect battery outside 25 ft (7.6 m) in
non-hazardous area.
CAUTION
Building wall
CATA-DYNE TM
heater c/w
explosion-proof
+ _ junction box
INSIDE BUILDING -
Class I Division 1 area use
Seal
appropriate electrical ttings
7