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The R8991 Interrupted Ignition Recycle Oil Primary and
Ignitor consists of an interrupted ignition oil primary, solid-
state ignition source and cad cell flame sensor for mounting
directly on an oil burner housing. This single-unit control
(primary and ignitor) operates the oil burner and oil valve
(if desired) in response to a call for heat from the thermo-
stat. The R8991 monitors the burner flame and shuts down
the system on ignition failure (lockout) or on flame failure
during the run cycle. On flame failure during the run cycle,
the control enters a recycle period; during the recycle period,
the control will not attempt to light. A manual reset button is
provided to reset the control after lockout. The reset button
may also be used to return the R8991 to the idle mode during
the trial for ignition, ignition carryover or run mode. If
ignition is successful, the control continues to provide spark
for a period (ignition carryover) after flame is sensed.
An indicator light provides the following lockout and
cad cell indications:
Flashing at 2 Hz (1/4 second on, 1/4 second off): System
is locked out.
Flashing at 1/4 Hz (2 seconds on, 2 seconds off): Control
is in the recycle mode.
On: Cad cell is sensing flame.
Off: Cad cell is not sensing flame.
SPECIFICATIONS:
Lockout Time: 15, 30, or 45 seconds.
Recycle Time: 60 seconds.
Ignition Carryover Time: 45 seconds.
APPROVALS:
Underwriters Laboratories Inc. Listed: File no. MP286,
guide MCCZ2.
Canadian Standards Association Certified: LR95329-1.
ELECTRICAL RATINGS:
Input: 120 Vac, 60 Hz.
Output:
Burner motor contacts: 7.4A full load, 44.4A locked
rotor.
Thermostat load: 0.2A.
ENVIRONMENTAL RATINGS:
Operating Ambient Temperature: -40°F to +150°F (-40°C
to 66°C).
Humidity: 90 percent RH at 95°F (35°C) noncondensing.
WHEN INSTALLING THIS PRODUCT...
1. Read these instructions carefully. Failure to follow
instructions can damage product or cause a hazardous
condition.
Interrupted Ignition Recycle
Oil Primary and Ignitor
Application
Installation
G.R. • Rev. 3-95 • ©Honeywell Inc. 1995 • Form Number 69-0669B—2
1
2. Check ratings given in these instructions and on prod-
uct to make sure product is suitable for your application.
3. Make sure installer is a trained, experienced service
technician.
4. After completing installation, use these instructions to
check out product operation.
CAUTION
1. Disconnect power supply before beginning in-
stallation to prevent electrical shock or equip-
ment damage.
2. Ensure combustion chamber is free of oil or oil
vapor before starting system.
LOCATION
The R8991 Interrupted Ignition Recycle Oil Primary and
Ignitor mounts directly on top of the main burner housing.
See Fig. 1 for a typical mounting. Your control can be
mounted differently, depending on the burner manufacturer.
MOUNTING AND LINE VOLTAGE WIRING
CONNECTIONS
Mount hinged side of R8991 control on burner housing.
See Fig. 1. The hinge should be in the open position for
easiest installation and wiring.
IMPORTANT: Before securing the R8991 on the burner
housing, make sure all wires are located within the
wiring enclosure area and are not pinched by the
edges of the burner housing, or R8991, or cad cell
bracket assembly.
WARNING
HAZARDOUS VOLTAGE MAY BE
PRESENT AT TERMINALS.
CAN CAUSE SEVERE INJURY OR
EQUIPMENT DAMAGE.
Make sure all wiring connections are as shown in
Fig. 2. Incorrect wiring connections can cause the
ignition to be on continuously.
All wiring must comply with local codes and ordinances.
1. Make sure all line voltage connections are in wiring
enclosure area at the rear of the burner housing.
R8991
69-0669B—2
Table of Contents
Related Manuals for Honeywell R8991
Summary of Contents for Honeywell R8991
- Page 1 A manual reset button is vapor before starting system. provided to reset the control after lockout. The reset button may also be used to return the R8991 to the idle mode during LOCATION the trial for ignition, ignition carryover or run mode. If...
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Page 2: Operation
When the line voltage wiring is completed, secure the duty-cycled spark will ignite the oil and the normal cycle will R8991 control to the burner housing on the side opposite of proceed through Ignition Carryover and Run. the hinge (see Fig. 1). -
Page 3: Start System
During lockout, the green diagnostic light starts flashing at 2 Hz (1/4 second on, 1/4 second off). Reset R8991 by pushing in and releasing the red reset button. The green diagnostic light stops flashing and goes off. If there is a call for heat, the R8991 returns to a try for ignition. -
Page 4: Troubleshooting
When the burner lights off, the R8991 indicator light should ignition tester to check out the R8991 Ignition be on. Do not continuously hold in reset button. The R8991 Source. Iron core transformer ignition testers can must sense that reset switch contacts are open and then damage solid state ignitors. - Page 5 There are several internal failures that cause the R8991 to remain in lockout for safety. If indicator light continues to flash at 2 Hz (1/4 second on, 1/4 second off) after resetting control, replace R8991.
- Page 6 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 QUALITY IS KEY Printed in U.S.A. 69-0669B—2...
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Page 7: Specifications
Le bouton de réarmement peut également servir à 4. Une fois l’installation terminée, vérifier le remettre le R8991 en mode de repos pendant un essai fonctionnement du produit comme l’indiquent les d’allumage. Si l’allumage réussit, le régulateur continue à... - Page 8 R8991. Raccorder les fils du thermostat LES MÉTHODES DE FIXATION DU R8991 SUR LE BOÎTIER DU BRÛLEUR PRINCIPAL VARIENT EN FONCTION DU aux bornes à vis du thermostat (T1 et T2) sur le R8991. MF5245 MODÈLE DE R8991.
- Page 9 Pendant la mise sous sécurité, le voyant vert commence à clignoter à 2 Hz (1/4 seconde allumé, 1/4 seconde éteint.) Réarmer le R8991 en appuyant sur le bouton rouge puis en le relâchant. Le voyant vert cessera de clignoter puis s’éteindra.
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Page 10: Dépannage
T1 et T2 du R8991 pour simuler un appel de chaleur. source d’allumage du R8991. Les vérificateurs 6. Après une seconde, le brûleur et l’allumeur devrait d’allumage à... - Page 11 • Vérifier l’espacement et la position des électrodes. Voyant clignotant à 2 Hz (1/4 seconde allumé, • Vérifier les contacts entre le R8991 et les électrodes. 1/4 seconde éteint) : le système est mis sous sécurité. • Vérifier la pression de la pompe à mazout.
- Page 12 Plusieurs défaillances internes peuvent causer le R8991 à demeurer sous sécurité (verrouillage). Si le voyant continue à clignoter à 2 Hz (allumé 1/4 sec, éteint 1/4 sec) après le réarmement du régulateur, remplacer le R8991.