VR8345
Universal Electronic Ignition
Gas Valve
Training Module
What you will learn
• Gas Valve Families and Nomenclature
• VR8345 Features and Benefits
• Universal Product Installation Features
• Product Cross Reference – finding the
correct cross reference
• VR8345 Gas Valve Advantage
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Types of Honeywell Gas Valves
Standing
Pilot
VR8300
VR8200
Intermittent
Pilot
VR8304
VR8204
Direct
Burner Ign.
VR8305
VR8205
Millivoltage
VS8510,20
Universal
VR8345
Honeywell VR8345 valves numbers: VR8345M4302, VR8345H4555 and
VR8345Q4563.
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Honeywell Gas Valve Nomenclature
• Gas valve nomenclature is defined by a combination
of numbers and letters.
- Valve Type
- Opening Characteristic
- Voltage
- Size of Valve
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Honeywell Gas Valve Nomenclature
VR8345M4302
Opening Characteristic
A, M = Standard
C, P = Step Open
H, K = Slow Open
J = Delay & Slow
R = Convertible
K, M & P = - 40 rating
Q = 2 stage
Type of Valve
V = Single seated valve
VR = Dual seated valve
VS = Millivoltage valve
SV = SmartValve™
Voltage
4 = Line voltage
5 = Mechanical
operation
8 = Low voltage
Size of Valve
For each family:
Higher number = larger valve
The VR8345 is available in three valve openings – VR8345M4302
(standard) VR8345H4555 (slow) and VR8345Q4563 (two stage).
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Valve Opening Characteristics
Opening type,
Temperature rating
VR8345M
Standard
M
Slow
H
Two Stage
Q
-40 F
-40 F
0F
Pressure
High
6
Low
Time
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VR8345 Product Features
VR8345 Universal Gas Valve Applications
• The Universal Gas Valve for gas fired furnaces, boilers &
pool heaters
- Works with ANY Intermittent Pilot or Direct Ignition (direct spark or
hot surface) Application
 Always have the right valve!
Universal valve part numbers:
VR8345M4302
VR8345H4555
VR8345Q4563
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VR8345 Universal Gas Valve
• Why choose the Honeywell VR8345?
 Universal Application
• Replaces 30+ Honeywell models & 30+
third party valves
• 40M plus installed valves in the market
are replaceable by the VR8345
 Reduce inventory on the shelf and in the
truck
• Save time and reduce callbacks by
stocking the VR8345 universal valve
 Easy Installation and Adjustments
• Installation, set up and adjustments
are simple with the available universal
features
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Why choose the Honeywell VR8345..continued
 Compact Design
• This valve adapts to the tightest
applications
 Proven Honeywell Brand
• Excellent Track Record for Quality &
Reliability
 Complete cross reference information
• Multiple resources to reference makes
the right choice simple
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VR8345 Features
- Broad capacity range
 30 to 415 cfh gas flow (natural) or 48K to 672K BTU’s (LP)
• Suitable for virtually all appliances
- Valve Opening Characteristics
 Available in Standard, Slow and 2-Stage
- Use with gas types
 Natural, Manufactured or LP Gas
• Internal inlet screen blocks contaminants in gas line from
entering valve
- LP Conversion Kits & Adapter bushings included
 Simple conversion eliminates the need for another valve
or purchasing a separate kit.
- Compact fit and multi-poise mounting
 Four-inch swing radius allows easy rotation inside the
tightest furnace spaces – no need to adapt pipe or remove
burner
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VR8345 Features
- Easy installation
 All adjustments and wiring connections accessible from
the top of the control
 Includes manual valve, 2 automatic operators, pressure
regulator, pilot adjustment, pilot plug and ignition adapter
 Clearly marked, keyed terminal block allows quick
attachment of wires and IP/DSI/HSI jumper
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Universal Installation
Features
Compact Fit and Multi-Poise Mounting
• Adapter available for tight places
• Adapter flange
- Thread on manifold
- Bolt to valve
• Eliminates the need to remove the manifold in
many cases
• Works on any Honeywell valve
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Installing VR8345 (DSI, HSI or IP)
Works with ANY Intermittent Pilot or Direct Ignition (direct
spark or hot surface) Application.
OR Intermittent Pilot Ignition (IP)
Direct Burner Ignition (DSI or HSI)
1. Leave plug in pilot outlet
2. Plug electrical adapter into terminal
block
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1. Remove plug from pilot outlet
2. Connect pilot gas tube
3. Use three terminals on valve for
connections to module
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Wiring of the VR8345
Easy access to wiring connections and adjustments
•
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Follow installation
instructions
including wiring to
thermostat and
other controls as
required.
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Wiring of the VR8345
Example #1 - Intermittent Pilot
S8610U
Intermittent
Pilot Ignition
System
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Wiring of the VR8345
Example #2 – Hot Surface Ignition
S8910U
Hot Surface
Ignition
System
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Wiring of the VR8345
Example #3 – Direct Spark Ignition
S87 Direct Spark
Ignition system
(single rod
application)
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Product Cross Reference
Product Cross Reference
• Where do I find Honeywell gas valve cross
reference and selection information?
- www.customer.honeywell.com
- Honeywell Application Selection and Cross
Reference Guide – Form 63-9575
- Honeywell Laminated Truck Visor – Form 63-9581
- Honeywell Gas Valve Counter Mat – Form 63-9580
- Honeywell Residential Technical Support:
 1-800-468-1502
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Product Cross Reference Guide
Forms 63-9575 and 63-9581 – information also found in product installation sheets.
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www.customer.honeywell.com
• See Cross Reference Search box in right column.
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VR8345 Universal Gas Valve Advantage
• When promoting the VR8345 Universal Gas Valve
keep these advantages in mind:
 It’s truly universal and works with ANY Intermittent
Pilot or Direct Ignition (direct spark or hot surface)
Application and replaces many Honeywell and
competitors valves.
 Inventory on the shelf and in the truck is reduced –
always have the right part and save money with less
inventory.
 Easy installation and adjustments saves time and
minimizes callbacks.
 The compact design makes this valve the right choice
to adapt to the tightest spaces.
 Proven Honeywell brand for quality and reliability
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results in satisfied customers, improving your bottom
line.
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VR8345
Universal Electronic Ignition
Gas Valve
Knowledge Test
VR8345 Gas Valve Knowledge Test
• Now that you completed this training module, take the
short quiz to test your knowledge.
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Test
1. The VR8345 replaces Intermittent Pilot and Direct
Burner Ignition Applications? T or F
2. The first number in the gas valve nomenclature
VR8 identifies the voltage? T or F
3. The VR8345M is a dual seated, low voltage, slow
opening valve? T or F
4. The VR8345 is available in 3 valve opening types:
standard, slow and two stage? T or F
5. The VR8345 is suitable for natural or LP gas?
T or F
6. In order to convert from natural to LP gas, a
separate converter kit must be purchased? T or F
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Test
7. The VR8345 includes an adapter for tight fit
applications and this adapter can be used on ANY
Honeywell valve? T or F
8. In a Direct Burner Ignition application you
REMOVE the pilot plug? T or F
9. The Honeywell VR8345 replaces over 30
Honeywell valves, as well as numerous White
Rodgers and Robertshaw valves? T or F
10. A universal gas valve is intended to reduce
inventory, minimize customer callbacks, save time
and money on installation and improve your
bottom line? T or F
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Answer Key
1. T
2. T
3. F
4. T
5. T
6. F
7. T
8. F
9. T
10. T
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