Corrosive Chemicals; Installation - Honeywell S8910U Installation Instructions And Safety Information

S8910U UNIVERSAL HOT SURFACE IGNITION MODULE
Mount the controls high enough above the bottom of the
cabinet to avoid getting wet during normal cleaning
procedures. NEMA 4 enclosure is recommended for the
ignition module; see the Electronic Ignition Service
Manual, form 70-6604.
High Humidity or Dripping Water
Dripping water can cause the module to fail. Never install
an appliance where water can drip on the controls.
In addition, high ambient humidity can cause the gas
control to corrode and fail.
If the appliance is in a humid atmosphere, make sure air
circulation around the controls is adequate to prevent
condensation. Also, regularly check out the system. NEMA
4 enclosure is recommended for the ignition module; see
the Electronic Ignition Service Manual, form 70-6604.

Corrosive Chemicals

Corrosive chemicals can attack the module and gas
control, eventually causing a failure. If chemicals are used
for routine cleaning, avoid contact with the controls. Where
chemicals are suspended in air, for some industrial or
agricultural applications, a NEMA 4 enclosure is recom-
mended for the ignition module; see the Electronic Ignition
Service Manual, form 70-6604.
Dust or Grease Accumulation
Heavy accumulations of dust or grease can cause controls
to malfunction. Where dust or grease can be a problem,
provide covers for the module and the gas control to limit
contamination. A NEMA 4 enclosure is recommended for
the ignition module; see the Electronic Ignition Service
Man-ual, form 70-6604.
Heat
Excessively high temperatures can damage controls.
Make sure the maximum ambient temperature at the
control does not exceed the rating of the control. If the
appliance operates at very high temperatures, use
insulation, shielding, and air circulation as necessary to
protect the controls. Proper insulation or shielding should
be provided by the appliance manufacturer; verify proper
air circulation is maintained when the appliance is in-
stalled.

INSTALLATION

When Installing this Ignition System...
1. Read these instructions carefully. Failure to follow
them could damage the components or cause a
hazardous condition.
2. Check Tables 1 through 3 to confirm that the
S8910U is a direct replacement for the existing
module.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out component
and appliance operation as provided in these
instructions.
69-0845—2
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH.
1. If the ignition module gets wet, it can malfunc-
tion, leading to accumulation of explosive gas.
• Never install where water can flood, drip or
condense on the module.
• Never use a module that has been wet.
Replace it.
2. Liquefied petroleum (LP) gas is heavier than air
and will not vent upward naturally.
• Do not light the pilot or operate electric
switches, lights or appliances until you are
sure the appliance area is free of gas.
3. Do not attempt to disassemble or clean the
module. Improper reassembly and cleaning can
cause unreliable operation.
CAUTION
1. Disconnect the power supply before beginning
wiring to prevent electrical shock or equipment
damage.
2. If a new gas control is to be installed, turn off
the gas supply before starting the installation.
After the gas control is installed, conduct a Gas
Leak Test according to the gas control manu-
facturer instructions.
3. If a module must be mounted where it can be
exposed to moisture or water, provide a
suitable waterproof enclosure.
4. Using the wire labels provided, label all the
wires before disconnecting. Wiring errors can
cause improper appliance operation and
dangerous conditions such as bypassing safety
features.
Perform Preinstallation Safety Inspection
A preinstallation safety check of the appliance and venting
system must be done before the replacement module is
installed. If a condition is detected that could result in
unsafe operation, shut off the appliance and advise the
owner of the unsafe condition. Correct any potentially
unsafe condition before proceeding with the installation.
Remove Old Module
Disconnect the power supply before doing any work on the
unit. Disconnect and tag the wires from the old module
using the wire labels provided. Remove the old module
from its mounting location.
Mount New Ignition Module
Mount the S8910U Module in the same location as the old
module. Protect the module from exposure to water,
moisture, corrosive chemicals and excessive dust and
grease. Assure that ambient temperature at the module is
within the range listed in the Application section.
Mount the module with the terminals down to protect from
dripping water and dust. The module can also be mounted
with terminals on either side. Do not mount with the
terminals pointing up. Refer to Fig. 1 for mounting recom-
mendations. When it is necessary to drill new mounting
holes, use the S8910U as a template to mark the mount-
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