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Eclipse Veri-Flame Instruction Manual 818 -6/06
For modulation models: the modulation feature incorporates a high re
purge time and a low re purge time into the purge sequence. This feature
allows the Veri-Flame to sequence internal dry contacts which can be used by
the customer requiring a high re purge of the combustion chamber before
ignition.
The high re and low re purge times are selectable by means of DIP switches
(see Section 3, “DIP Switch Settings” on page 12):
SW4 ............................... 15 seconds SW6 ................................60 seconds
SW5 ............................... 30 seconds SW7 ............................. 120 seconds
The selected times are additive and apply to both the high re and low re purge
times (that is, high and low re times are always identical).
The modulation terminals will sequence as follows:
The purge to high re sequence does not start until the air switch input is on.
The Automatic step occurs when the burners are operating and allows the
burner ring rate to be controlled by an automatic temperature controller.
High to Low Fire Purge
Modulation Capability
with High to Low Fire
Position Switch Interlocks
Sequence Step
Internal Contact Connections
Power Off Terminal 10 (Common) Terminal 12 (Low Fire)
Power On, Limits Open Terminal 10 (Common) Terminal 12 (Low Fire)
Purge To High Fire Terminal 10 (Common) Terminal 13 (High Fire)
Purge To Low Fire Terminal 10 (Common) Terminal 12 (Low Fire)
Automatic Modulation Terminal 10 (Common) Terminal 11 (Auto)
Alarm and Lockout Terminal 10 (Common) Terminal 12 (Low Fire)
System Errors &
Lockout Conditions
(Continued)
4) Low re fail (for modulating model)–low re switch open prior to trial
for ignition.
5) High re fail (for modulating model)–high re switch is not closed at the
end of high re purge.
The following situations will result in a lockout condition:
6) Air failure (for purge and modulation models) – loss of combustion
air anytime during the operational cycle. The Air Failure LED will be on for
this condition. (See “Recycle Mode” on page 14)
7) Pilot ame fail (for all models) loss of ame during the trial for pilot igni-
tion period. The Flame Failure LED will be on for this condition.
8) Main ame fail (for all models) loss of ame during the main burner trial
for ignition or run period (recycling not selected). The Flame Failure LED
will be on for this condition.
The following result in lockout conditions after 30 seconds, the system error
light blinks about 14 times and then remains on:
9) If a ame is detected out of sequence, which may be caused by:
a) a faulty scanner (for all models);
b) electrical interference on the sensor wiring (for all models);
c) a ame exists in the burner or in the line of sight of a scanner, due to
a gas leak, product re or other condition (for all models).
10) Air ow switch closed before start-up (for purge and modulation
models).
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