Honeywell Y8610U Product Data page 20

Y8610U INTERMITTENT PILOT RETROFIT KIT
Prior to beginning this procedure, a preliminary examination of the appliance and the automatic intermittent pilot system should be made to
determine that the automatic intermittent pilot system can be properly applied to the appliance.
This procedure is intended as a guide to aid in safely installing a listed automatic intermittent pilot system on an existing listed appliance
equipped with an atmospheric gas burner(s) and not of the direct vent type.
This procedure is based on the assumption that the history of the specific installation has been one of safe and satisfactory operation.
This procedure is predicated on central furnace and boiler installations, and it should be recognized that generalized procedures cannot
anticipate all situations. Accordingly, in some cases, deviation from this procedure may be necessary to determine safe operation of the
equipment.
The following steps should be followed in making the modifications:
1. Perform a safety inspection of the existing appliance installation. See Exhibit A for a recommended procedure for such a safety
inspection.
2. Shut off all gas and electricity to the appliance. To shut off gas, use the shutoff valve in the supply line to the appliance. If a manual
gas valve is not in the gas supply line within 6 feet of the appliance in an accessible location, one shall be installed. Do not use the
shutoff valve which is provided as part of a combination control.
3. Install the automatic intermittent pilot system in strict accordance with the manufacturer's installation instructions.
4. Turn on all gas and electricity to the appliance.
5. Determine that the appliance transformer has adequate capacity by following the steps outlined below:
a. Compute the approximate current draw by adding the current draw of the automatic intermittent pilot system to (1) the current
draw of the associated valving, and (2) the current draw of any relays or other devices operated by the transformer.
b. Multiply the total current draw as computed above by 24 V to determine the total VA (volt-ampere) required.
c. The total VA (volt-ampere) required should be equal to or less than the VA rating of the transformer.
d. If the total VA (volt-ampere) required is greater than the VA rating of the transformer, the transformer must be replaced with a
Class 2 transformer of adequate rating.
6. Check the heat anticipator in the comfort thermostat to determine if it is properly adjusted to the current draw of the control system.
Follow the thermostat manufacturer's instructions.
7. Make certain wiring connections are tight and wires are positioned and secured so they will not be able to contact high temperature
locations.
8. Conduct a Gas Leakage Test of the appliance piping and control system downstream of the shut-off valve in the supply line to the
appliance.
9. a. Adjust the thermostat to its highest temperature setting, and test manifold pressure and adjust the pressure regulator to match
original input as required (refer to Exhibit A, step 9b).
b. Visually determine that main burner is burning properly; i.e., no floating, lifting or flashback. Adjust the primary air shutter(s) as
required.
10. If the appliance is equipped with high and low flame control or flame modulation, check for proper main burner operation at both high
and low flame.
11. Determine that the pilot is igniting and burning properly and that main burner ignition is satisfactory by interrupting and reestablishing
the electrical supply to the appliance in any convenient manner. Make this determination with the appliance burner both cold and hot.
Perform this step as many times as is necessary to satisfy yourself that the automatic intermittent pilot system is operating properly.
12. Test the pilot safety device (1) to determine if it is operating properly, and (2) for turndown characteristics according to the
manufacturer's installation instructions. No adjustments should be made other than those recommended by the system manufacturer.
13. Sequence the appliance through at least three operating cycles.
14. Applicable only to furnaces. Check both the limit controller and the fan controller for proper operation. Limit control operation can be
checked by blocking the circulating air inlet or temporarily disconnecting the electrical supply to the blower motor and determining that
the limit controller acts to shut off the main burner gas.
15. Applicable only to boilers.
a. Determine that the circulating water pumps are in operating condition.
b. Test low water cutoffs, automatic feed water controls, pressure and temperature limit controllers and relief valves in accordance
with the manufacturer's recommendation to determine they are in operating condition.
16. Add the labels (see 1.6.1-n and -o) on the appliance.
Exhibit B of ANSI Standard Z21.71 for Automatic Intermittent Pilot Ignition Systems for Field Installation.
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis MN 55408-0524
Honeywell Latin American Division
Miami Lakes Headquarters
14505 Commerce Way Suite 500
Miami Lakes FL 33016
68-0133—2 J.S. Rev. 7-96 Printed in U.S.A.
68-0133—2
Procedure for Installing Automatic Intermittent Pilot Systems
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 2C9
Honeywell Europe S.A.
3 Avenue du Bourget
B-1140 Brussels Belgium
Exhibit B
Printed on recycled paper containing at
20
least 10% post-consumer paper fibers.
Honeywell Asia Pacific Inc.
Room 3213-3225
Sun Hung Kai Centre
No. 30 Harbour Road
Wanchai
Hong Kong
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