S89E,F DIRECT SPARK IGNITION CONTROL MODULE
68-0066—05
2
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit may not match the listed specifications
exactly. Also, this product is tested and calibrated
under closely controlled conditions, and some minor
differences in performance can be expected if those
conditions are changed.
Models:
S89 Direct Spark Ignition Control Modules. Provide electronic
control of direct spark ignition system on gas-fired
atmospheric and power burners.
S89E: 10-second maximum delay for safe start check.
S89F: 38-second maximum delay for safe start check plus
valve on delay.
Complete DSI system also includes:
120 Vac Spark Generator with 1.5A or less current draw.
Q347 Spark Igniter or equivalent.
Q354 Flame Sensor or equivalent.
VR845, VR854, VR8450, or VR8305 Combination Gas
Controls or any dual valve rated 2A or less and designed
for DSI applications.
24 to 30 Vac Thermostat.
HIgh Temperature Limit Controller.
24V Transformer. See Table 1 for VA rating.
Electrical Ratings:
Power supply: Requires two power supply connections—24
and 120 Vac, 50/60 Hz.
Current at 24V input: 2.2A maximum.
Valve Contacts: 2.0A maximum run, 20A maximum inrush at
24 Vac.
Spark Generator Relay Contacts: 1.5A at 120 Vac, 50/60 Hz.
Transformer Rating:
See Table 1.
Thermostat Heat Anticipator Setting:
0.2A plus gas control
current.
Delay Timing:
S89E: Safe Start Check—10 seconds maximum.
S89F: Safe Start Check plus Valve On Delay—38 seconds
maximum.
Table 1. Transformer Rating.
Safety Lockout Timing:
4 or 11 seconds nominal. Ignition is
on during approximately the first 80 percent of lockout
timing and off during the last 20 percent for flame proving.
Specify lockout timing when ordering.
Flame Failure Response Time:
2 seconds maximum with 2.5
μ
A flame current.
Flame Current Signal:
0.8
μ
A minimum.
Ambient Temperature Range:
-40°F to +175°F (-40°C to +80°C).
Wiring Connections:
24 Vac—3/16 in. quick-connects.
120 Vac—12 in. (305 mm) color-coded leadwires.
Sensing Lead:
Up to 36 in. (0.9m). Insulation must be rated for
100 megohm resistance between wire and ground.
Mounting:
Mounts in any position.
Dimensions:
See Fig. 1.
Approvals:
Underwriters Laboratories Inc. Component Recognized: File
No. MP268, Guide No. MCCZ2.
CSA International Certified: 158158-1047805.
S89 Current
(in Amperes)
Gas Control Current
(In Amperes)
Transformer VA
Rating Required
Transformer
Model No.
0.2
0 to 0.6
20
AT20A or AT120A
0.2
0.6 to 1.0
30
AT72D or AT140A
0.2
1.0 to 1.4
40
AT72D or AT140A
0.2
1.4 to 2.0
50
AT87A or AT150A
