WHITE-RODGERS |
50E47 |
Hot Surface Ignition Control |
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INSTALLATION INSTRUCTIONS |
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Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The White Rodgers 50E47 is an automatic gas interrupted ignition control employing a microprocessor to continually monitor, analyze, and control the proper operation of the gas burner.
Signals interpreted during continual surveillance of the thermostat and flame sensing element initiate automatic ignition of the burner, sensing of the flame and system shut-off during normal operation.
System fault analysis, which quickly shuts off the gas flow, coupled with automatic re-ignition upon sensing a fault correction, highlight the control’s capabilities.
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.
Replace only with exact model number, including dash number. Failure to use exact replacement control could cause personal injury and/or property damage.
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
! CAUTION
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.).
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 |
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Description ......................................................... |
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Precautions ........................................................ |
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Specifications ..................................................... |
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Installation .......................................................... |
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Mounting & Wiring |
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Operation ............................................................ |
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!WARNING
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.
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WHITE-RODGERS DIVISION |
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PART NO. 37-4836B |
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EMERSON ELECTRIC CO. |
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9797 REAVIS ROAD |
Printed in U.S.A. |
Replaces 37-4836A |
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ST. LOUIS, MISSOURI 63123-5398 |
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9541 |
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R
SPECIFICATIONS
ELECTRICAL RATINGS:
Input Voltage: 25 VAC 50/60 Hz
Current: 0.2 amp
Relay Contact 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
Flame Current Requirements:
Minimum current to insure flame detection: 2 μa DC* Maximum current for non-detection: 0.2 μa DC* Maximum allowable leakage resistance: 100 M ohms
*Measured with a DC microammeter in the flame probe lead
HUMIDITY RANGE:
To 95% relative humidity (non-condensing)
MOUNTING:
Surface mount or 4" x 4" junction box
Timing Specs (see table below for variable timings): maximum
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60 Hz |
50 Hz |
Flame Establishing Time |
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Standard |
4.0 sec |
4.8 sec |
Optional |
7.0 sec |
8.4 sec |
Flame failure Response time: |
0.8 sec |
0.96 sec |
Recycle Time: Immediate, or equal to prepurge time on models with prepurge option.
OPERATING TEMPERATURE RANGE: |
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Gases Approved: Natural, Manufactured, Mixed, |
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-40° to 175°F (-40° to 80°C) |
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Liquid Petroleum, and LP Gas Air Mixtures are all |
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approved for use. |
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TIMING SPECIFICATIONS |
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(all times in seconds unles otherwise noted) |
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Ignitor |
Trial for |
Ignition |
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Valve |
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Warmup |
Ignition |
Activation |
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Sequence |
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Lockout |
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Dash Number |
Pre-purge |
Period |
Period |
Period |
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Retries |
Period |
Interpurge |
Time |
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-1 thru -9 |
0 |
17 |
4 |
1 |
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0 |
4 |
0 |
21 |
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-10 thur -19 |
0 |
45 |
4 |
1 |
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0 |
4 |
0 |
49 |
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-20 thru -29 |
30 |
17 |
4 |
1 |
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0 |
4 |
0 |
51 |
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-30 thru -39 |
30 |
45 |
4 |
1 |
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0 |
4 |
0 |
79 |
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-40 thru -49 |
30 |
17 |
4 |
1 |
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2 |
12 |
90 |
293 |
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-50 thru -59 |
30 |
45 |
4 |
1 |
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2 |
12 |
90 |
377 |
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-60thru -69 |
0 |
17 |
4 |
1 |
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2 |
12 |
60 |
203 |
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-70 thru -79 |
0 |
45 |
4 |
1 |
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2 |
12 |
60 |
287 |
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-101 thru -109 |
0 |
17 |
7 |
4 |
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0 |
7 |
0 |
24 |
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-110 thru -119 |
0 |
45 |
7 |
4 |
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0 |
7 |
0 |
52 |
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-120 thru -129 |
30 |
17 |
7 |
4 |
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0 |
7 |
0 |
54 |
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-130 thru -139 |
30 |
45 |
7 |
4 |
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0 |
7 |
0 |
82 |
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-140 thru -149 |
30 |
17 |
7 |
4 |
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2 |
21 |
90 |
302 |
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-150 thru -159 |
30 |
45 |
7 |
4 |
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2 |
21 |
90 |
386 |
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-160 thru -169 |
0 |
17 |
7 |
4 |
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2 |
21 |
60 |
212 |
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-170 thru -179 |
0 |
45 |
7 |
4 |
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2 |
21 |
60 |
296 |
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-201 thru -209 |
0 |
17 |
4 |
1 |
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0 |
4 |
0 |
21 |
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-210 thru -219 |
0 |
45 |
4 |
1 |
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0 |
4 |
0 |
49 |
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-220 thru -229 |
30 |
17 |
4 |
1 |
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0 |
4 |
0 |
51 |
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-230 thru -239 |
30 |
45 |
4 |
1 |
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0 |
4 |
0 |
79 |
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-240 thru -249 |
30 |
17 |
4 |
1 |
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2 |
12 |
90 |
293 |
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-250 thru -259 |
30 |
45 |
4 |
1 |
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2 |
12 |
90 |
377 |
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-260 thru -269 |
0 |
17 |
4 |
1 |
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2 |
12 |
60 |
203 |
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-270 thru -279 |
0 |
45 |
4 |
1 |
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2 |
12 |
60 |
287 |
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-301 thru -309 |
0 |
17 |
7 |
4 |
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0 |
7 |
0 |
24 |
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-310 thru -319 |
0 |
45 |
7 |
4 |
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0 |
7 |
0 |
52 |
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-320 thru -329 |
30 |
17 |
7 |
4 |
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0 |
7 |
0 |
54 |
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-330 thru -339 |
30 |
45 |
7 |
4 |
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0 |
7 |
0 |
82 |
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-340 thru -349 |
30 |
17 |
7 |
4 |
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2 |
21 |
90 |
302 |
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-350 thru -359 |
30 |
45 |
7 |
4 |
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2 |
21 |
90 |
386 |
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-360 thru -369 |
0 |
17 |
7 |
4 |
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2 |
21 |
60 |
212 |
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-370 thru -379 |
0 |
45 |
7 |
4 |
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2 |
21 |
60 |
296 |
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NOTE: All times are in nominal seconds at 60 Hz. Multiply all timings by 120% at 50 Hz.
Reset time is 2.3 seconds max. at power-up.
On controls with retry option, ignitor warm-up time is increased by 10 seconds on retry
2
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