Harman DVC-500, Инструкция по установке и эксплуатации

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1
2 Blink Status Details:
DVC 00-C
Firebox Static Pressure
Safety Protocol
The DVC-500 operates with a negative pressure
firebox as a safety feature. The control continuously
adjusts the draft motor speed to maintain a safe fire -
box negative static.
If the control cannot maintain this negative static at
full draft motor speed, a Three Stage Safety Protocol
is started.
Stage 1
When the safety switch senses a loss of negative
pressure in the firebox for more than 68 seconds the
following happens:
The combustion blower will reduce in speed.
During this cool down period the feeder is allowed
to opreate. If needed, the feeder can opreate for up
to 3 minutes.
After 72 minutes, if the safety switch has not sensed
another pressure loss, the unit will automatically go
back to the control board setting.
If the safety switch senses a loss of negative pres-
sure anytime during the STAGE 1 Protocol, the unit
automatically goes to the STAGE 2 Protocol.
Stage 2:
When the safety switch senses a loss of negative
pressure in the firebox for more than 68 seconds, the
following happens:
The status light will start to blink ( 2 blinks ).
The combustion blower and feeder motor will shut
off.
These motors will remain off for a 5 minute cool-
down period.
After five minutes, the unit will restart at a reduced
feed rate ( 30 seconds max.) for 72 minutes.
After 72 minutes, if the safety switch has not sensed
another pressure loss, the unit will automatically go
back up to Stage 1.
The status light will continue to blink (2 blinks)
throughout Stage 1 and Stage 2.
If the safety switch senses a loss of negative pres-
sure anytime during the Stage 2 Protocol, the unit
automatically goes to the Stage 3 Protocol.
[At any time, the blink status can be reset by
disconnecting the power to the unit for a few
seconds.]
Stage 3:
When the safety switch senses a loss of negative
pressure in the firebox for more than 68 seconds, the
following happens:
The status light will continue to blink 2 blinks.
The Distribution Blower will be cycling "high" to
"low" as an audible warning.
The Combustion Blower and Feeder Motor will
shut off.
When the unit reaches Stage 3 these motors will not
restart.
The Draft Motor will continue to run, but the fire
will go out.
The Stage 3 Protocol generally indicates that service
is necessary.
[At any time, the blink status can be reset by
disconnecting the power to the unit for a few
seconds.]
CAUTION
Resetting a 2 Blink Status more than 3
times in a 1 minute period would indicate
service is required.
Repeated RESETTING of a 2 Blink Status
may cause excessive feeding. This is not
a safety concern but higher than desired
room temperature could occur.