Enlaces rápidos
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The 50D50-842 is a universal replacement Direct Spark
control designed for maximum compatibility with existing
systems. It features:
•
A card port and eight program keys to select the
Trial for Ignition Time, Retries, Pre-purge and
Recycle timings.
•
A Jumper to accommodate systems using Direct
Sense (sensing through ignitor) or Indirect Sense
(using a Flame Sensor)
•
LED indicator for quick system and module diagnostics
and troubleshooting.
PRECAUTIONS
GENERAL PRECAUTION
!
Application of this type of control may cause
flame rollout on initial startup and could cause
personal injury and/or property damage.
Check product specification and cross reference
before replacing existing module. Do not use if
existing module is not listed. Use of a program
key other than listed can result in appliance
malfunction.
If in doubt about whether your wiring is millivolt, line, or
low voltage, have it inspected by a qualified heating and
air conditioning contractor or licensed electrician.
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 compo-
nents could cause the control to malfunction.
CONTENTS
Description ................................................................... 1
Precautions .................................................................. 1
Specifications ............................................................... 2
Installation .................................................................... 2
Mounting & Wiring ......................................................... 2
Operation & Troubleshooting ........................................ 4
Universal Direct Spark Control
INSTALLATION INSTRUCTIONS
To prevent electrical shock and/or equipment
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
This control is not intended for use in locations
where it may come in contact with water. Suitable
protection must be provided to shield the control
from exposure to water (dripping, spraying, rain,
etc.).
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could
cause shock or fire hazard.
Do not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will
damage thermostat and could cause personal
injury and/or property damage.
www.white-rodgers.com
www.emersonclimate.com
50D50-842
CAUTION
!
WARNING
!
PART NO. 37-6575F
Replaces 37-6575E
1423
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Resumen de contenidos para Emerson White-Rodgers 50D50-842
- Página 1 50D50-842 Universal Direct Spark Control INSTALLATION INSTRUCTIONS FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE. DESCRIPTION The 50D50-842 is a universal replacement Direct Spark control designed for maximum compatibility with existing systems.
- Página 2 SPECIFICATIONS ELECTRICAL RATINGS: Program Key Timing Specifications Quick Reference Timing and Retry Input Voltage: 18 to 30 VAC, 60 Hz PROGRAM TRIAL Current: 0.2 amp + MV @ 25 PRE- INTER Relay Contact Ratings: (COLOR) IGNITION RETRIES PURGE PURGE Main Valve Relay: 1.5 amp @ 25 VAC 60 Hz A (blue) 4 Sec.
- Página 3 INSTALLATION SPARK SPARK JUMPER PROBE PROBE LINK FLAME FLAME (GND) (GND) FLAME Valve Valve PROBE Burner Ground Burner Ground LIMIT LIMIT CONTROLLER CONTROLLER (GND) L1 (HOT) (GND) L1 (HOT) THERMOSTAT OR TRANSFORMER ALTERNATE TRANSFORMER THERMOSTAT OR ALTERNATE CONTROLLER LIMIT CONTROLLER LIMIT Fig.
- Página 4 OPERATION TYPICAL FURNACE INSTALLATION In a typical application the 50D50-842 is designed to generate sparks and energize the gas valve and monitor the flame sensor. It is a 100% shut off design that locks out the gas valve if the burner does not light within the trial for ignition period. The ignition sequence begins with a call for heat from the room thermostat.
- Página 5 TROUBLESHOOTING Call for heat, Thermostat contacts close Check low voltage to module (TH-TR). Does the LED If no voltage: Check Limit Switches stay OFF? If correct voltage present: Unit has internal fault - replace. Check flame probe and wiring - Unit is seeing a flame signal with valve closed Does it give Check for poor burner ground wiring 1 Flash?
- Página 6 White-Rodgers is a business of Emerson Electric Co. The Emerson logo is a www.white-rodgers.com trademark and service mark www.emersonclimate.com of Emerson Electric Co.