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resideo VR8245 Series Installation Instructions Manual

Electronic ignition gas controls

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VR8245 and VR8345 Electronic Ignition
Gas Controls
APPLICATION
The electronic ignition gas controls are used in gas-fired
appliances with capacities up to 415 cu ft/hour at 1 inch
wc pressure drop [11.8 cu m/hour at 0.25 kPa] for
natural gas. These gas controls will operate with a direct
spark (DSI), hot surface (HSI) or intermittent pilot
ignition. The control includes a manual valve, two
automatic operators, a pressure regulator, pilot
adjustment, pilot plug, conduit cover and ignition
adapter. Refer to the following list for the specifications.
Models
VR8245
VR8345
1/2 X 1/2
3/4 X 3/4
1/2 X 3/4
a
Capacity based on 1000 Btu/cu ft, 0.64 specific gravity natural gas at 1 in. wc pressure drop [37.3 MJ/cu m, 0.64
specific gravity natural gas at 0.25 kPa pressure drop].
Use conversion factors in Table 2 to convert capacities
for other gases.
Table 2. Gas Capacity Conversion Factors.
Gas
Specific Gravity
Manufactured
0.60
Mixed
0.70
Propane
1.53
Approvals:
American Gas Association Design Certificate:
L2025007.
Canadian Gas Association Design Certificate:
L2025007.
Pipe Adapters: Includes two 3/4 to 1/2 inch NPT bush-
ings and one 1/2 to 3/8 inch NPT bushing.
Size
1" PD Capacity
1/2X1/2
150,000
240,000
300,000
270,000
Multiply Listed
Capacity By
0.516
0.765
1.62
SPECIFICATIONS
Ambient Temperature Range: -40° to 175°F
[-40° to 79°C].
Body Pattern: Straight-through.
Ignition Adapter: Configures device to operate with
direct spark or hot surface ignition.
Electrical Ratings:
Voltage and Frequency: 24 Vac, 50/60 Hz.
Current Draw: See Table 3 for current draw.
Capacity: See Table 1.
Table 1. Gas Capacity.
Minimum Regulated
Capacity
20,000 (40,000 for LP)
30,000
30,000
30,000
Models include: Natural to LP conversion kit and
Reducer bushings
Cross Reference: See Table 4 for cross reference infor-
mation.
INSTALLATION
WHEN INSTALLING THIS
PRODUCT...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a haz-
ardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable
for your application.
3. The installer must be a trained, experienced ser-
vice technician.
4. After installation is complete, use these instruc-
tions to check out product operation.
INSTALLATION INSTRUCTIONS
Maximum Regulated
Capacity
200,000
340,000
415,000
370,000
69-2013-04

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Summary of Contents for resideo VR8245 Series

  • Page 1 VR8245 and VR8345 Electronic Ignition Gas Controls INSTALLATION INSTRUCTIONS APPLICATION SPECIFICATIONS The electronic ignition gas controls are used in gas-fired Ambient Temperature Range: -40° to 175°F appliances with capacities up to 415 cu ft/hour at 1 inch [-40° to 79°C]. wc pressure drop [11.8 cu m/hour at 0.25 kPa] for Body Pattern: Straight-through.
  • Page 2 VR8345M 3/4 x 3/4 Standard 393691 394588 VR8345Q 3/4 x 3/4 2-Stage 396021 396025 Table 4. Cross Reference. Service Part Resideo White-Rodgers Robert-Shaw VR8245M2530 VR8204M1075, VR8204M1091, 36E01-204, 36E01-205, 720-079 (7200IPER), VR8204A1201, VR8204A1219, 36E01-206, 36E01-305, 720-080 (7200IPER-LP), VR8204A2001, VR8204A2076, 36E22-214, 36E36-304,...
  • Page 3 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS Converting Between Natural And LP TWO IMPERFECT GAS CONTROL THREADS WARNING PIPE FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE THREAD PIPE THE AMOUNT APPLY A MODERATE AMOUNT OF SHOWN IN TABLE FOR PIPE COMPOUND TO PIPE ONLY INJURY, OR DEATH INSERTION INTO GAS CONTROL...
  • Page 4 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS Install Gas Control DROP 1. This gas control can be mounted from 0 to 90 PIPED HORIZONTAL degrees in any direction from the vertical position CONTROL SUPPLY of the gas control knob. 2. Mount the gas control so gas flow is in the direc- RISER tion of the arrow on the bottom of the gas control.
  • Page 5 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS COLOR CODE FOR NATURAL CAP SCREW BLACK SILVER O RING BLACK BLACK PRESSURE REGULATOR BLACK BLACK ADJUSTING SCREW STAINLESS SPRING STEEL APPLY WRENCH FROM TOP OR PRESSURE REGULATOR BOTTOM OF GAS HOUSING CONTROL TO EITHER SHADED AREA M7780C M8562B...
  • Page 6 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS All wiring, including insulated quick connect terminals, must comply with applicable electrical codes and ordinances. PILOT GAS 1. Check the power supply rating on the gas control TUBE and make sure it matches the available supply. Install thermostat and other controls as required.
  • Page 7 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS S8610U VENT DAMPER (BURNER) MV MV/PV PV 24V TH-W SENSE SPARK PLUG MV/PV PROVING THERMOSTAT SWITCH VALVE DUAL VALVE COMBINATION GAS CONTROL COMBUSTION AIR BLOWER RELAY SENSOR LIMIT CONTROLLER IGNITER COMBUSTION (HOT) AIR BLOWER MOTOR PILOT BURNER...
  • Page 8: Startup And Checkout

    VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS Gas Control Knob Settings The gas control knob operates differently in intermittent pilot, hot surface and direct spark ignition systems. (HOT) The gas control knob settings for an intermittent pilot S87 CONTROL MODULE system are as follows: ALARM, IF USED...
  • Page 9 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS Check And Adjust Gas Input to Main Standard-Opening Pressure Regulator 1. The gas control outlet pressure should match the Burner manifold pressure listed on the appliance name- plate. 2. With the main burner operating, check the gas con- CAUTION trol flow rate by using the meter clocking method Fire or explosion hazard.
  • Page 10 VR8245 AND VR8345 ELECTRONIC IGNITION GAS CONTROLS facturers instructions for the specific operating Two-Stage (Q) Models sequence and regulator adjustment procedure for Two-stage models require that you check and adjust the appliance in which the control is installed and both high and low pressure regulator settings. Two- for instructions on how to prevent the control from stage appliance operating sequences vary.
  • Page 11: Maintenance

    See ignition nia conditions, e.g., those used in greenhouses module specifications. or animal barns, contact your Resideo sales • Hot Surface or Direct Spark Ignition—Watch representative to request a gas control with cor- for an ignition spark or glow at hot surface rosion resistant construction.
  • Page 12 Resideo Technologies, Inc. 1985 Douglas Drive North, Golden Valley, MN 55422 1-800-468-1502 www.resideo.com 69-2013—04 M.S. Rev. 05-20 | Printed in United States © 2020 Resideo Technologies, Inc. All rights reserved. This product is manufactured by Resideo Technologies, Inc. and its affiliates.

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