Honeywell DVI 980, DVI 982 User Manual

A Honeywell Company

(Honeywell Nr. S4865)

Gas Burner Safety Control

For 1- or 2-stage forced draught and
atmospheric gas burners, with DC valves
Possible flame detectors:

- Ionisation probe

- Infrared flicker detector 1020.1

- UV flame sensor UVD 971

INTRODUCTION

The burner control boxes DVI980/982 controls and
supervises forced draught and atmospheric gasburners.
They are approved and certified according to the applicable
European standards and regulations. The use on direct air
heaters according DIN 4794 is also possible.
The microprocessor-based programming sequence ensures
extremely stable timings independent of voltage variations,
ambient temperature and/or switch-on cycles. The built-in

DVI 980/982

information system not only provides a continuous
monitoring of the actual state of the box (very helpful
especially for monitoring the start-up phase) but also informs
about the cause of a possible lock out. The lock out cause
is stored in such a way that it can be retrieved even after a
power failure. The control box is designed for maximum
safety in case of fluctuations in the voltage supply. If the
mains voltage drops below the permitted level, operation is
interrupted and the control box automatically prevents the
start sequence from being repeated. In this way, the safety
of the system is not put at risk by a drop in the mains voltage.
This low-voltage protection works not only during start-up
but also permanently during operation.

CONSTRUCTION FEATURES

Microprocessor, electronic components, output relais,
ignition spark generator and flame amplifier are placed on
the printed circuit board.
These plus the optional lockout- and reset circuit are well
protected inside a flame resistant plastic housing.
The LED for displaying the information system are placed
on top of the housing.

TYPES AVAILABLE

DVI 980 1-stage
DVI 982 2-stage

MODELS

The following functions can be configured by factory:

• with or without air proving switch

• IR-data transmission over Palm Pilot, PC or hand-held

• volatile or non volatile lock out

• recycling (numbers eligible) or lock out / blocked after
loss-of-flame during operation

• recycling (numbers eligible) or lock out / blocked without
flame establishment after safety time

• with or without internal reset button

• potential free output for flame signal

• with or without lock out lamp (LED)

Table of timings (sec.)

Model max. reaction time or supervised pre-ignition ignition time stray light safety time delay 2nd stage

01 60 24 0 4 5 5 10
02 60 10 0 4 5 5 –

05 60 30 0 4 5 5 –

EN1C-0121SZ20 R0305

air proving switch pre-purge time time total monitoring (DVI 982)

tlw tv1 tvz tz tf ts tv2

TECHNICAL DATA

Operating voltage 220 / 240 V (-15... +10%)

50/60 Hz (±5%)
Fuse rating 10 A fast, 6 A slow
Power consumption ca. 12 VA
Max. load per output

- term. X2/6 motor 2.0 A, cos ϕ 0.4
Variation A

- term. X3 ,X5, X6 solenoid valves 90mA, DC
Variation B

- term. X3, X9, X5, X6 solenoid valves 90mA, DC

only DC-valves can be connected!

- term. X2/8 lock out 1.0 A, cos ϕ 0.4
total load max. 6 A during 0,5 sec
Air proving switch 1 working contact
STB Safety temperature delimiter 1 working contact
Ignition spark generator
Ignition frequency up to 40 Hz
Energy ignition spark 10 µAs
Ignition voltage 20 kV
Sensitivity (operation) 1 µA
Min. required ion. current 1.5 µA
Sensitivity for stray light 0.4µA
Flame signal output Optocoupler

max 70V DC/100mA
Ionisation probe insulation Probe - earth

greater than 50 MΩ
Stray capacity Probe - earth

less than 1000 pF
Cable length < 3 m
Flame detectors

IRD 1020.1 end-on viewing

UVD 971 end-on viewing
Weight incl. Wiring base 190 g
Mounting position any
Protection class IP 40
Approved ambient parameter

- for operation -20° C... +60° C

- for storage -20° C... +80° C
Build-up of ice, penetration of water and condensing water
are inadmissible
Approvals according to European standard

EN 298, as well as all other
relevant Directives and
standards

1

APPLICATION FEATURES

1. Information system

The information system is microprocessor based and reports
on all aspects of burner control box operation and flame
supervision. It informs continuously about the actual
programming sequence the unit is just performing. Besides
monitoring of the programming sequence it also allows to
identify errors during start-up of operation without any
additional testing devices. The automatically performed
diagnosis is a valuable tool which facilitates service/
maintenance work and therefore saves costs. The analyses
of the error cause can be done directly on stage or if not
possible afterwards as the lock out reason is stored in a
non-volatile lock out mode memory.
The information system communicates with the outside
world using a LED (the used Flash-Code is similar to the
Morse-Code). The messages are optically transmitted by a
appropriately flashing LED. Using an additional terminal
(optional), the messages can be recorded and displayed in
easy readable form.

1.1 Programming sequence display

The built-in microprocessor controls not only the program­ming sequence but the information system too. The indivi­dual phases of the programming sequence are
displayed as Flash-Code.
The following messages can be distinguished:

Message Flash-Code
waiting for ❘ ❘ .

air proving switch
pre-purge ❘ ❘ ❘ .

tv1
pre-ignition ❘ ❘ ❘ ❘ .

tvz
safety time ❚ ❘ .

ts
delay 2nd stage ❚ ❘ ❘ .

tv2
running ❘ _

1.2 Lock-out diagnoses

In case of a failure the LED is permanently illuminated. Every
10 seconds the illumination is interrupted by a flash code,
which indicates the cause of the error. Therefore the following
sequence is performed which is repeated as long as the unit
is not reset.

Sequence:

illuminated phase dark phase Flash-Code dark phase

❘ ❚ ❚ ❚ ❚

for 10 sec for 0.6 sec for 1.2 sec

Error diagnosis:

Error message Flash-Code Possible fault
lock out ❘ ❚ ❚ ❚ ❚ within safety time

safety time no flame establishment
stray light ❘ ❘ ❚ ❚ ❚ stray light

during monitored phase,
detector may be faulty

air proving switch ❚ ❚ ❘ ❘ ❘ air proving switch
in closed position contact welded

air proving switch ❘ ❘ ❘ ❚ ❚ air proving switch does not
time-out close within specified time

air proving switch ❘ ❘ ❘ ❘ ❚ air proving switch opens
opened during start or operation

loss of flame ❚ ❚ ❚ ❚ ❘ loss of flame signal during

operation

Flash-Code for manual lock out
manual/external ❘ ❘ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚

lock out
(see also 3. lock out and reset)

Error RV1 ❚ ❚ ❚ ❚ ❘ ❘ ❚ ❚ ❚ ❚
or STB opens
Safety temperature delimiter STB opens. For reset, the supply
line must, for a short time, be interrupted after pushing the reset
button.

low mains voltage ❘ ❚ ❚ _
Internal fuse defect ❘ ❚ _

> control box defect

Description

❘ = short pulse
❚ = long pulse

. = short pause
_ = long pause

2. Flame detection

The following types of flame detectors are suitable:
– Ionisation probe, temperature resistant material, well

insulated (material and insulation same as for ignition
electrode).

– Infrared-flicker detector type IRD 1020.1 with mounting

flange M 93 or the UV solid state flame sensor UVD 971.
Flame detection using an ionisation probe is only possible
in conjunction with mains supplies which provides a neutral
earth connection.
Connecting the IRD 1020.1 or UVD 971 the correct wiring
has to be observed.

2.1 Stray light monitoring

The stray light check is performed at the end of the pre­purge time for the duration as mentioned in the table of
timings.

DVI 980/982

2