40
Start-Up Procedures
6. Allow the appliance to operate and allow
the primary outlet temperature to reach the
set point temperature.
[
6---
] This begins the burner shutdown
and post purge cycle. The CH circulator
will continue to run until the room thermo-
stat is satisfied.
7. Lower the room thermostat set point below
the room temperature to end the call for
heat.
[
1---
] This begins a post purge cycle.
When the room thermostat is satisfied, the
appliance will shutdown. The control mod-
ule will close the gas valve and the blower
will continue for 30 seconds for a post
purge cycle before shutting down. If anoth-
er call for heat is initiated during the post
purge cycle, the burner will remain off for
an additional 30 seconds before starting a
new ignition sequence and the circulator
will be energized.
[
7---
] The CH circulator will continue
for a 1 minute post pump cycle. The MOD-
ULATING DELTA is in STANDBY mode
waiting for a call for heat.
8. Verify the operation of the appliance by
repeating the operational sequence several
times.
9. Return the room thermostat to a desired set-
ting. Press and hold the “-” button for 2
seconds to enable the DHW mode. The dis-
play should flash a “d” followed by DHW,
set temperature. Parameter 2 should read as
“01” for a verification.
Control Display
Standby Mode
After the appliance is turned on, the control
panel will display STANDBY mode as shown
in the figure above.
This is the standard mode for the MODULAT-
ING DELTA. The control automatically returns
to this mode after 20 minutes if no keys have
been pressed on the display. Any parameters
that were modified are then enabled.
The first character shows (on left side of display)
the current status of the appliance depending on
the condition of both the appliance and the burn-
er. The last 3 characters indicate the current tem-
perature.
If the burner is blocked due to a “soft” lockout,
the display alternates between a 9 followed by
the primary outlet temperature and a “b” with a
two digit error code.
TO TEMPORARILY PLACE THE BURN-
ER INTO HIGH FIRE TEST MODE:
press
the MODE button until “
StBY
” is displayed.
Then press and hold both the MODE and “+”
button simultaneously until the first digit flashes
“H”.
While in the test mode:
-
high limit will function
-
CH circulator will function
-
the test mode will time out in approxi-
mately 10 minutes
TO TEMPORARILY PLACE THE BURN-
ER INTO LOW FIRE TEST MODE:
press
the MODE button until “
StBY
” is displayed.
Then press and hold both the mode and “-” but-
ton simultaneously until the first digit flashes
“L”.
Press and hold the “+” and “-” button simulta-
neously to deactivate the high or low fire test
mode, while in the “
StBY
” mode.
StbY
Test function: Burner on, high fire mode
Test function: Burner on, low fire mode
---
---
H
L
Display
Boiler function