69-1174
2
S8701/S8702 DIRECT SPARK IGNITION CONTROLS
a
Valve used must be designed for DSI application.
b
Separate spark igniter and flame sensor mounted on a
common bracket.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions and on
the product to make sure it is suitable for your
application.
3. The installer must be a trained, experienced service
technician.
4. After installation is complete, check out system
operation.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury
or death.
If a new gas control is to be installed, turn off gas
supply before starting installation.
Be sure to conduct a gas leak test after the control
is installed.
CAUTION
Electric Shock Hazard.
Can cause personal injury or equipment
damage.
Disconnect power supply before wiring.
Model
No.
Spark
Igniter
Flame
Sensor
Valve Required
a
S8701/
Q347A
Q354A
Honeywell VR8205
S8702
Q366
b
gas valves or
equivalent
Heat
Excessively high temperatures can damage the control.
Make sure the maximum ambient temperature at the
control does not exceed the rating of the control, see Table
2. If the appliance operates at very high temperatures, use
insulation, shielding, and air circulation, as necessary, to
protect the control. Proper insulation or shielding should be
provided by the appliance manufacturer; verify proper air
circulation is maintained when the appliance is installed.
Table 2. S8701/S8702 Ambient Temperature Ratings.
IMPORTANT
If this is a replacement application, follow the
appliance manufacturer’s instructions, if avail-
able. The manufacturer usually provides wiring
diagrams, start-up and checkout instructions and
the service procedures for their system. If the
manufacturer’s instructions are not available, this
information may be used as a general guide.
Mounting The S8701/S8702 Control
Select a location within 6 ft (1.8m) of the burner that will
permit a direct cable route to the spark igniter terminal.
Ready access to the terminals is necessary for wiring and
servicing. The S8701/S8702 control may be mounted in
any position. Use No. 6-32 machine screws or No. 8
sheetmetal screws 1 inch long for fastening. Fasten
securely. Do not exceed the ambient temperature rating
given in Table 2.
M16233
13/16 (21)
1-1/8
(29)
2
(50)
2-13/16 (72)
3-15/16 (100)
3-3/8 (86)
3-3/8
(86)
5/17 (7)
7/8 (23)
5-3/16
(130)
3/16 (4)
Operation
Ambient Temperature
50 Hz
-40
°
F to 160
°
F
60 Hz
-40
°
F to 175
°
F
Table 3. System Requirements.
Fig. 1. S8701/S8702 Dimensions.
Mounting Auxiliary Controls
Mount the spark igniter, flame sensor, temperature control,
transformer, gas control and any other auxiliary controls
according to the manufacturer’s instructions.
NOTE:
The S8701 and S8702 installations require a 24V
transformer rated to handle both the S8701/
S8702 current and the gas valve current. Table 4
shows the transformer rating necessary for
various loads.
