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SPECIFICATIONS
4
The Y34381002
Direct Soark Gas Burner lanition
Package includes the S87D ilectronic
Module, 6347A
Spark
Igniter-Sensor,
Q354A
Flame
Sensor
and
392286-l
Ignition
Cable Assembly.
Other controls
needed
to complete
the heating sys-
tem include
a 24 V, DSI gas valve;
24 V thermostat;
24
V
transformer
and
high
temperature
limit
controller.
S87D CONTROL MODULE
The S87D contains
the electronic
components
of
the system
and also serves as a central
wiring
panel
for the external
controls.
Powered
by a 24 V trans-
former
and controlled
by a thermostat,
it performs
the
following
functions.
1. Checks
for
a false
flame
condition
(short
to
ground).
Module
will lock out if false flame condition
is present.
2. Generates
a potential
of 15,000 V (open circuit)
at the spark-igniter
stud for direct ignition
of the main
burner.
3. Operates
gas valve (internal
relay controls
inde-
pendent
gas valve circuit).
4. Senses the presence
of main burner
flame and
discontinues
ignition
spark.
If the burner fails to ignite
within
the trial-for-ignition
period,
safety
lockout
oc-
curs.
5. If there
is a loss of power, the system will shut
down
safely.
Start-up
is initiated
when
power
is
restored.
6. If there is a loss of main burner flame, the timed
trial-for-ignition
is repeated.
Safety
shutdown
occurs
if flame is not reestablished
within the trial-for-ignition
period.
7. Normally
closed
contacts
in internal
relay
may
be used for an alarm circuit to signal safety shutdown
of system.
ELECTRICAL
RATINGS:
Voltage
and Frequency-24
Vat, 60 Hz.
Current
Rating-O.2
A plus gas valve current
draw.
SAFETY LOCKOUT TIMING:
11 seconds.
FLAME
FAILURE
REIGNITION
TIME:
0.8
seconds
maximum.
FLAME
CURRENT
SIGNAL
REQUIRED:
1.5 YA dc
minimum.
SPARK
GENERATOR
VOLTAGE:
15,000
V
open
circuit.
MOUNTING:
Mounts
in any position.
See Fig. 1
DIMENSIONS:
See Fig. 1.
FIG. 1-DIMENSIONS
FOR
S87
IN
in.
[mm
IN
BRACKETS].
(continued
on page
3)
WHEN
PURCHASING
REPLACEMENT
AND
MODERNIZATION
PRODUCTS
FROM
YOUR
TRADELINE
WHOLESALER
OR YOUR DISTRIBUTOR,
REFER TO THE TRADELINE
CATALOG
OR PRICE SHEETS FOR
COMPLETE
ORDERING
NUMBER, OR SPECIFY-
1. Order number Y343BlW2.
c. Combination
gas control (for DSI
2. Safety lockout timing (11 seconds).
application).
3. DSI system controls, as required.
d. High limit temperature
controller and
a. 24 V, 60 Hz transformer.
auxiliary safety controls.
b. Low voltage thermostat or temperature
controller.
e. Alarm signal (if required).
IF YOU HAVE ADDITIONAL
QUESTIONS,
NEED FURTHER INFORMATION,
OR WOULD
LIKE TO COMMENT
ON OUR
PRODUCTS
OR SERVICES,
PLEASE WRITE OR PHONE:
1.
2.
YOUR
LOCAL
HONEYWELL
RESIDENTIAL
SALES
OFFtCE
(CHECK
WHtTE
PAGES
OF
YOUR
PHONE
DIRECTORY).
RESIDENTIAL
MVISKIN
CUSTOMER
SERWCE
HONEYWELL
INC., 1995 DOUGLAS
DRIVE NORTH
MINNEAPOLIS,
MINNESOTA
55422 (612)542-7500
(IN
CANADA-HONEYWELL
LIMITED/HONEYWELL
LIMITEE,
740
ELLESMERE
ROAD,
SCARBOROUGH,
ONTARIO
MlP
2V9).
INTERNATIONAL
SALES
AND
SERVICE
OFFICES
IN ALL PRINCIPAL
CITIES
OF THE
WORLD.
2
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