Checkout - Honeywell Y8610U Product Data

Y8610U INTERMITTENT PILOT RETROFIT KIT

CHECKOUT

Check out the gas control system:
• At initial appliance installation.
• As part of regular maintenance procedures. Maintenance
intervals are determined by the application. See Planning
the Installation section for more information.
• As the first Troubleshooting step.
• Anytime work is done on the system.
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH.
1. If you smell gas or suspect a gas leak, turn off the
gas at the manual service valve and evacuate the
building. Do not try to light any appliance and do
not touch any electrical switch or telephone in the
building until no spilled gas remains.
2. Perform the Gas Leak Test after initial Installation
and anytime work is done to the gas piping.
STEP 1: Perform a Visual Inspection.
• With the power off, make sure all wiring connections are
clean and tight.
• Turn off all power to appliances and the ignition module.
• Open manual shutoff valves in the gas line to the
appliance.
• Perform Gas Leak Test.
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH.
Check for gas leaks with soap and water solution
anytime work is done on a gas control.
Gas Leak Test
Paint all pipe connections upstream of the gas control
with a rich soap and water solution. Bubbles indicate a
gas leak.
If a gas leak is detected, tighten the pipe connection.
Stand clear while lighting the main burner to prevent
injury caused from hidden gas leaks, which could cause
flashback in the appliance vestibule. Light the main
burner.
With the main burner in operation, paint all pipe joints
(including adapters) and gas control inlet and outlet
with a rich soap and water solution.
If another gas leak is detected, tighten the adapter
screws, joints, and pipe connections.
Replace the part if the gas leak cannot be stopped.
STEP 2: Review Normal Operating Sequence and Module
Specifications.
• See Specifications and Operation sections.
STEP 3: Reset the Module.
• Turn the thermostat to its lowest setting.
• Wait one minute.
As you perform Steps 4 through 9, watch for points where
operation deviates from normal. See the Troubleshooting
Guide, Fig. 19, to correct the problem.
68-0133—2
STEP 4: Check Safety Shutoff Operation.
• Turn the gas supply off at the manual shutoff valve.
• Set the thermostat or controller above the room
temperature to call for heat.
• Watch for spark at pilot burner.
• Time spark from start to shutoff. See Specifications
section.
• Open the gas control knob and ensure no gas is flowing to
the pilot or main burner.
• Set the thermostat below the room temperature and wait
one minute before continuing.
STEP 5: Check and Adjust Gas Input to Main Burner.
CAUTION
1. Do not exceed the input rating stamped on the
appliance nameplate, or manufacturer
recommended burner orifice pressure for the size
orifice(s) used. Make sure the main burner
primary air supply is properly adjusted for
complete combustion (see the appliance
manufacturer instructions).
2. If checking gas input by clocking the gas meter:
• Make sure that the only gas flow through the
meter is that of the appliance being tested.
• Make sure that other appliances are turned off
and that the pilot burners are extinguished (or
deduct the gas consumptions from the meter
reading).
• Convert the flow rate to Btuh as described in
the Gas Controls Handbook, form 70-6202
and compare to the Btuh input rating on the
appliance nameplate.
3. If checking gas input with a manometer
(pressure gauge):
• Make sure the gas control knob is in the
PILOT position before removing the outlet
pressure tap plug to connect the manometer.
• Turn the gas control knob back to PILOT when
removing the manometer and replacing the
outlet pressure tap plug.
• Shut off the gas supply at the appliance
service valve or, for LP gas, at the gas tank
before removing the outlet pressure tap plug
and before disconnecting the manometer and
replacing the outlet pressure tap plug.
• Perform the Gas Leak Test at the inlet
pressure tap plug.
The gas control output pressure should match the
manifold pressure listed on the appliance nameplate.
With the main burner operating, check the gas control
flow rate using the meter clocking method or check the
gas pressure using a manometer connected to the gas
control outlet pressure tap. See Fig. 3.
If necessary, adjust the pressure regulator to match the
appliance rating.
Gas control outlet pressure is normally set at 3.5 in. wc
(0.9 kPa) nominal for natural gas. It can be adjusted
from 3 to 5 in. wc (0.74 to 1.2 kPa).
Gas control outlet pressure is normally set at 10 in. wc
(2.5 kPa) nominal for LP gas. It can be adjusted from
8 to 12 in. wc (2 to 3 kPa).
a. Remove the pressure regulator adjustment cap
and screw.
b. Using a screwdriver, turn the inner adjustment
screw clockwise to increase or counterclockwise
to decrease the main burner gas pressure.
c. Always replace the cap screw and tighten firmly.
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