SPECIFICATIONS
ELECTRICAL RATINGS [@ 77°F (25°C)]: | OPERATING TEMPERATURE RANGE: | |||||
Input Voltage: 25 VAC 50/60 Hz |
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Max. Input Current @ 25 VAC: 0.45 amp | HUMIDITY RANGE: |
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| Relay Load Ratings: |
| 5% to 93% relative humidity | |||
| Valve Relay: 1.5 amp @ 25 VAC 50/60 Hz 0.6 pf | MOUNTING: |
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| Ignitor Relay: 2.0 amp @ 120 VAC 50/60 Hz | Surface mount multipoise |
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| (resistive) | Timing Specs: (@ 60 Hz**) |
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| Inducer Relay: 2.2 |
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| Circulator Relay: 14.5 | Flame Establishing Time: | 0.8 sec | |||
Flame Current Requirements: | Flame Failure Response Time: | 2.0 sec | ||||
| Minimum current to insure flame detection:0.25 µa DC* | **At 50 Hz, all timing specifications should be increased | ||||
| Maximum current for | by 20% |
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| Maximum allowable leakage resistance: 100 M ohms | Gases Approved:Natural, Manufactured, Mixed, Liquified | ||||
| Petroleum, and LP Gas Air Mixtures are all approved for use. | |||||
*Measured with a DC microammeter in the flame probe lead | ||||||
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| TIMING SPECIFICATIONS |
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| (All times are in seconds, unless noted otherwise |
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| Event |
| Definition |
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| The period of time intended to allow for the dissipation of any unburned | 15 |
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| gas or residual products of combustion at the beginning of a furnace |
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| operating cycle prior to initiating ignition |
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| Trial for Ignition | The period of time between initiation of gas flow and the action to | 4 |
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| Period (TFI) | shut off the gas flow in the event of failure to establish proof of the |
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| supervised ignition source or the supervised main burner flame. |
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| Ignition Activation | The period of time between energizing the main gas valve and | 4 |
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| Period (IAP) | deactivation of the ignition means prior to the end of TFI |
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| Retries | The additional attempts within the same thermostat cycle for ignition | 4 times |
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| when the supervised main burner flame is not proven within the first |
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| trial for ignition period. |
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| Valve Sequence | Valve sequence period equals 4 seconds trial for ignition period x | 20 |
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| Period | (1 initial try + 2 retries) + 12 seconds. |
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| Interpurge | The period of time intended to allow for the dissipation of any unburned | 15 |
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| gas or residual products of combustion between the failed trial for |
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| ignition and the retry period. |
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| The period of time intended to allow for the dissipation of any unburned | 5 |
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| gas or residual products of combustion at the end of a furnace burner |
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| operating cycle. |
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| Lockout Time | ANSI standard rated module timing. | 250 |
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| Heat | The period of time between proof of the supervised main burner flame | 45 |
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| and the activation of the blower motor at Heat speed. |
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| Heat | The period of time between the loss of a call for heat and the | 60/90/120/180 |
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| deactivation of the blower motor at Heat speed. |
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| Cool | The period of time after a thermostat demand for cool before energizing | 2 |
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| the circulator blower motor at Cool speed. |
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| Cool | The period of time between the loss of a call for cool and the | 2/45 |
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| deactivation of the blower motor at Cool speed. |
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| Ignitor | The length of time allowed for the igniter to heat up prior to the initiation | 20 |
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| of gas flow. |
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| Auto Reset | After one (1) hour of internal or external lockout, the control will auto- | 60 minutes |
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| matically reset itself and go into an auto restart purge for 60 seconds. |
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| Humidifier |
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| Yes |
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| Electronic Air Cleaner |
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| Yes |
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*This time will vary depending on option switch position. The control is factory set at 90 seconds HEAT
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