DORCHESTER DR-FC 25, Инструкции по установке, пусконаладке и обслуживанию

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Installation
34 Instruction Manual DR-FC
3
is
The display will now show
INTERNAL CHECK
for about 10 seconds, and
will then go to the main menu.
10. Activate the “ON mode” by going through the following steps:
- Press once on the blue arrow (
L
) to bring the pointer (
»
) to
ON
and
press
E
. The display as shown in Figure 3.10 appears.
- Confirm with
E
the option
START OPERATION
.
The water heater is now in “ON mode” and will ignite.
11. Once the display shows the text
RUNNING
you must wait about 1 minute
before reading the dynamic pressures (the fan needs this time to run up to
full rotational speed).
12.
@
Use the pressure gauge to read the supply pressure at the test nipple
#
.
Depending on the gas, refer to Tabel 3.5 .
n
Remark
Consult the mains gas supply company if the supply pressure is not correct.
n
Remark
If the burner pressure is not correct and the water heater is fitted with a flat
sealing plate, you will not be able to adjust the pressure. In this case, consult
your installer or supplier.
If the water heater is fitted with a burner pressure regulator, then the
pressure can be adjusted by following steps
13 through 17 .
13. Remove the cap
8
from the burner pressure regulator
7
.
14. Adjust the burner pressure by turning the adjusting screw
9
, depending on
the correction required:
-
Adjusting screw anticlockwise: burner pressure decreases.
- Adjusting screw clockwise: burner pressure increases.
15. Cover the opening of the adjusting screw and check the burner pressure
against the target value from Tabel 3.5 .
16. If the pressure reading is not correct, repeat steps 14 and 15 until the correct
pressure is attained.
17. Activate the “OFF mode” of the control panel:
- If the
MENU
is not displayed:
press
B
.
- Use
H
and
L
to position the cursor (
»
) beside
OFF
- Confirm with
E
.
18. Wait until the fan has stopped. and turn the control panel off.
c
Note
Failure to wait until the fan stops can cause damage to the water
heater.
19. Shut off the gas supply.
INTERNAL CHECK
Figure 3.8 Internal check
MENU
»OFF
^ ON
È WEEK PROGRAM
Figure 3.9 Main menu
»START OPERATION
^ CHANGE SETPOINT
È Tset=65ÉC
Figure 3.10 Starting up
MENU
»
OFF
^ ON
È WEEK PROGRAM
Figure 3.11 Main menu