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Anleitung Zusammenfassung
Do not exceed the specification ratings. All wiring must conform to local and national electrical codes and ordinances. This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction. CONTENTS Description ......................................................... 1 Precautions ........................................................ 1 Specifications ..................................................... 2 Installation .......................................................... 3 Mounting & Wiring Do not use on circuits exceeding specified volt- age. Higher voltage will damage control and could cause shock or fire hazard. Do not short out terminals on gas valve or pri- mary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage. WARNING! Operation ........................................................... 6 WHITE-RODGERS DIVISION EMERSON ELECTRIC CO. PART NO. 37-6095A 9797 REAVIS ROAD Printed in U.S.A. ST. LOUIS, MISSOURI 63123-5398 9919 SPECIFICATIONS ELECTRICAL RATINGS [@ 77°F (25°C)]: TIMING SPECIFICATIONS Input Voltage: 25 VAC 50/60 Hz (All times are in seconds, unless noted otherwise) Max. Input Current @ 25 VAC: 0.45 amp Relay Load Ratings: Valve Relay: 1.5 amp @ 25 VAC 50/60 Hz 0.6 pf Ignitor Relay: 6.0 amp @ 120 VAC 50/60 Hz (resistive) Inducer Relay: 2.2 FLA–3.5 LRA @ 120 VAC Circulator Relay: 14.5 FLA–25.0 LRA @ 120 VAC Flame Current Requirements: Minimum current to insure flame detection: 1 ma DC* Maximum current for non-detection: 0.1 ma DC* Maximum allowable leakage resistance: 100 M ohms *Measured with a DC microammeter in the flame probe lead OPERATING TEMPERATURE RANGE: -40° to 175°F (-40° to 80°C) HUMIDITY RANGE: 5% to 93% relative humidity (non-condensing) MOUNTING: Surface mount multipoise Timing Specs: (@ 60 Hz**) maximum Flame Establishing Time: 0.8 sec Flame Failure Response Time: 2.0 sec ** At 50 Hz, all timing specifications should be increased by 20% Gases Approved: Natural, Manufactured, Mixed, Liquified Petroleum, and LP Gas Air Mixtures are all approved for use. 50A55-143 PRE-PURGE 30 INITIAL IGNITOR WARM-UP (1st 64 17 attempts) MINIMUM IGNITOR WARM-UP 5 MAXIMUM IGNITOR WARM-UP 21 IGNITION ACTIVATION PERIOD 1 TRIAL FOR IGNITION PERIOD 4 RETRIES 2 times VALVE SEQUENCE PERIOD 12 INTERPURGE 60 POST-PURGE 5 LOCKOUT TIME 300 DELAY TO HEAT ON 15/30/ 45/60 DELAY TO HEAT OFF 60/90/ 120/180 DELAY TO COOL ON 0 DELAY TO COOL OFF 90 AUTO RESET 70 minutes HUMIDIFIER YES ELECTRONIC AIR CLEANER YES INSTALLATION Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard. To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete. Failure to earth ground the appliance or reversing the neutral and hot wire connection to the line can cause shock hazard. Shut off main gas to heating system until installation is complete. Route and secure all wiring as far from flame as practical to prevent fire and/or equipment damage. To prevent damage to the transformer, system components or wiring harness, take care when drilling new mounting holes. Failure to do so may result in electrical shock, fire hazard or equipment damage. MOUNTING AND WIRING WARNING! CAUTION! NOTE All wiring should be installed according to local and national electrical codes and ordinances. The control must be secured to an area that will experience a minimum of vibration and remain below the maximum ambient temperature rating of 175°F. The control is approved for minimum ambient temperatures of -40°F. When mounting the control, any orientation is acceptable. Choose a location that will not damage, obstruct or place stress on the control’s terminations, system wiring harness or system components. After finding a suitable location, drill four (4) 1.8” holes for mounting control. To ensure proper mounting hole locations, there is a mounting hole template on page 8 of this instruction sheet. Detach the page with the template from the instruction sheet and apply it to the mounting location. When drilling the holes, take care so that the transformer, wiring harness or other system components are not damaged. Four (4) #8 sheet metal screws are provided to complete the installation. Refer to the wiring diagram and wiring table when connecting the 50A55 control to other components of the system. UL approved, 105°C rated 18 gauge, stranded, 2.64” thick insulation wire is recommended for all low voltage safety circuit connections. Refer to 50A55 specification sheet for recommended terminals to mate with those on the control. UL approved 105°C rated 16 gauge min., stranded, 4.64” thick insulation wire is recommended for all line voltage connections. Refer to 50A55 specification sheet for recommended terminals to mate with those on the contr...