Operation; Adjustments And Start-Up; Checking The Controls - Walter Wilson HYDRA09-E2401M-D Guide D'installation Et Manuel Du Propriétaire

2.1)

ADJUSTMENTS AND START-UP

CAUTION
The boiler must be filled with water and all air purged
from the system, before turning on the power.
If the power is turned on before the boiler is filled with
water, the elements will become seriously damaged.
With the help of a small screwdriver, adjust the boiler
1.
temperature screw on the board potentiometer located
on the control board, to between "90°F - 120°F - 150°F -
180°F - 210°F" (see Figure 1, item B);
2.
In the event that the modulating capacity feature of
the boiler is desired, an outdoor sensor will need to be
installed and wired onto the Hydra electronic board
(terminals S1 and S2). Once the outdoor sensor is wired
to the board, the boiler capacity will modulate if the
outdoor air temperature is between -10˚C (14˚F) and
10˚C (50˚F) (see figure 2, p. 9 for more details on
modulation). If capacity modulation of the boiler is not
required for the application, do not proceed with the
installation of the outdoor sensor and leave the
terminals S1 and S2 unwired.
Check if the dip switches "NUMBER OF ELEMENTS"
3.
are in the proper position. Refer to Table 2 and Figure 1,
item D to determine the position of the dip switch, based
on the power rating;
Turn on the power;
4.
Adjust room thermostat according to the required
5.
temperature.
TABLE 2
DIP SWITCHES POSITION
Dip switch 1
New Hydra with
immersed OFF
sensor
Number of
Dip switch 4
elements
3
4
5
6
Dip switch 6
Not used OFF
6

OPERATION

Dip switch 2 Dip switch 3
ON ON
Dip switch 5
OFF OFF
OFF ON
ON OFF
ON ON
Dip switch 7 Dip switch 8
OFF OFF
SECTION 2
HYDRA ELECTRONIC BOARD
A: BOARD TERMINAL STRIP
B: POTENTIOMETER
C: TROUBLESHOOTING PORT
D: DIP SWITCHES FOR BOARD CONFIGURATION
E: FUSE 2A (AUTO-RESET)
2.2)

CHECKING THE CONTROLS

Operational Controls
After having made sure that the boiler is completely filled
with water and that there is no call for heat, turn on the
power to the unit.
For this verification, disconnect the outdoor sensor from the
S1 and S2 terminals of the Hydra electronic board. As a
result, all the elements will remain functional, regardless of
the outside temperature;
Set the thermostat in the house to 30°C (85°F). The
circulator should start-up and the elements should start
sequentially, one by one (randomly), at approximately 15
second intervals. Pilot lights located on the control board
provide a visual check of the operation of the boiler;
The circulator stays on for as long as there is a call for heat;
By observing the temperature indicator, allow the water
temperature to rise to 60°C (140°F). Then, turn the electronic
Limit Control counter clockwise to 32°C (90°F). The
elements will stop sequentially, one by one, at 1 second
intervals between each. Now, the water temperature must be
adjusted with the "90°F - 120°F - 150°F - 180°F - 210°F" set
screw on the electronic board.
Once the verification is completed, reconnect the outdoor
sensor to S1 and S2 of the Hydra electronic board (if
required).
FIGURE 1