resideo S8910U3000 Manuel D'installation page 9

MOUNT IN ONE OF THESE POSITIONS
TERMINALS FACING DOWN
TERMINALS FACING LEFT
DO NOT MOUNT
WITH TERMINALS FACING UP
Fig. 1. Module mounting recommendations.
WARNING
EXPLOSION HAZARD. CAN CAUSE
INJURY OR EQUIPMENT DAMAGE.
Only trained professional gas appliance service
technicians should install and check out the
S8910U.
Selectable DIP switches allow the ignition module
to be customized for the appropriate trial count,
trial for ignition period, and igniter warm-up time.
Use only the appropriate DIP switch configuration
as given in Table 4 on page 7. Refer to Tables 1, 2,
and 3 for appropriate number of ignition trials,
warm-up, prepurge and between trial prepurge
timings.
Improper DIP switch configuration can result in
appliance malfunction.
TERMINALS FACING RIGHT
M2647A
Wire the Module
CAUTION
1. Check the wiring diagram furnished by the appli-
ance manufacturer, if available, and compare with
Table 5. Carefully follow any special instructions
affecting the general procedures outlined in this
section.
2. Disconnect the power supply before making wiring
connections to prevent electrical shock or equip-
ment damage.
IMPORTANT
1. Be sure all wiring complies with applicable electri-
cal codes and ordinances.
2. Hot surface igniter leadwires should not be
allowed to rest against grounded metal surfaces.
3. A common ground is required for the S8910U and
the main burner. The 24V (GND) terminal inter-
nally grounds one side of the transformer. Any
auxiliary controls or limits must not be in the
grounded leg. In addition, the appliance should be
earth-grounded.
4. Make sure the transformer has adequate VA. The
ignition module requires 0.4A at 24 Vac. Add the
current draws of all other devices in the control cir-
cuit, including the pilot and main valves in the gas
control, and multiply by 24 to determine the total
VA requirement of these components. Add this
total to 9.6 VA (for the ignition module). The result
is the minimum transformer VA rating. Use a Class
II transformer when replacement is required.
5. Check that L1 (hot) and L2 (neutral) are wired to
the proper terminals.
1. Connect the wires to the S8910U Ignition Module as
shown in Table 5. Make sure that adequate system
ground is provided as indicated in the wiring table.
See Fig. 2 through 4. Where a change in quick-con-
nect is required, cut off the original quick-connect,
strip the leadwire and firmly crimp in place the
proper quick-connect supplied.
2. Verify the thermostat anticipator setting as
explained in the preceding IMPORTANT, item 4.
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S8910U3000
34-00008EFS—03