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INSTALLATION INSTRUCTIONS

69-2013

VR8245 and VR8345 Universal

Electronic Ignition Gas Controls

APPLICATION

The universal electronic ignition gas controls are used in 
gas-fired appliances with capacities up to 300 cu ft/hour 
at 1 inch wc pressure drop [8.5 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.

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, 60 Hz.
Current Draw: See Table 3.

CAPACITY: 

See Table 1.

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 spe-
cific gravity natural gas at 0.25 kPa pressure drop].

Use conversion factors in Table 2 to convert capacities 
for other gases.

APPROVALS:

American Gas Association Design Certificate: 

L2025007.

Canadian Gas Association Design Certificate: 

L2025007.

PIPE ADAPTERS: 

Includes two 3/4 to 1/2 inch NPT 

bushings and one 1/2 to 3/8 inch NPT bushing. 

CROSS REFERENCE: 

See Table 4 for cross reference 

information.

INSTALLATION

WHEN INSTALLING THIS PRODUCT…

1.

Read these instructions carefully. Failure to follow 
them could damage the product or cause a hazard-
ous 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 instructions 
to check out product operation.

Table 1. Gas Capacity.

Size (Inlet x Outlet)

Capacity (at 1 in. wc 

pressure drop)

a

Minimum Regulated 

Capacity

Maximum Regulated 

Capacity

3/4 x 3/4

300 cu ft/hour

[8.5 cu m/hour]

30 cu ft/hour

[0.8 cu m/hour]

415 cu ft/hour

[11.8 cu m/hour]

1/2 x 1/2

150 cu ft/hour

[4.25 cu m/hour]

20 cu ft/hour

[0.6 cu m/hour]

200 cu ft/hour

[5.7 cu m/hour]

Table 2. Gas Capacity Conversion Factors.

Gas

Specific Gravity

Multiply Listed 

Capacity By

Manufactured

0.60

0.516

Mixed

0.70

0.765

Propane

1.53

1.62

Summary of Contents for VR8245

Page 1: ...e conversion factors in Table 2 to convert capacities for other gases APPROVALS American Gas Association Design Certificate L2025007 Canadian Gas Association Design Certificate L2025007 PIPE ADAPTERS Includes two 3 4 to 1 2 inch NPT bushings and one 1 2 to 3 8 inch NPT bushing CROSS REFERENCE See Table 4 for cross reference information INSTALLATION WHEN INSTALLING THIS PRODUCT 1 Read these instruc...

Page 2: ...ressure Regulator Type Current Draw A Conversion Kits Natural Gas LP LP Natural Gas VR8245M 1 2 x 1 2 Standard 5 393691 394588 VR8345H 3 4 x 3 4 Slow Opening 7 393691 394588 VR8345M 3 4 x 3 4 Standard 7 393691 394588 VR8345Q 3 4 x 3 4 2 Stage 9 396021 396025 Table 4 Cross Reference Universal Replacement Cross Reference Universal Service Part Honeywell White Rodgers Robert Shaw VR8245M2530 VR8204A1...

Page 3: ... over gas control inlet or outlet 2 Apply moderate amount of good quality pipe com pound to bushing leaving two end threads bare See Fig 1 3 Insert bushing in gas control and carefully thread pipe into the bushing until tight Fig 1 Use moderate amount of pipe compound Location Locate the combination gas control in the appliance vestibule on the gas manifold In replacement applications locate the g...

Page 4: ...diment trap 4 Apply a moderate amount of good quality pipe com pound do not use Teflon tape to pipe only leaving two end threads bare See Fig 1 On LP installa tions use compound resistant to LP gas 5 Remove seals over gas control inlet and outlet if necessary 6 Connect pipe to gas control inlet and outlet Use wrench on the square ends of the gas control See Fig 3 and 4 When working with an intermi...

Page 5: ...de a gas tight seal 5 Push tubing into the pilot gas tapping on the outlet end of the control until it bottoms While holding tub ing all the way in slide compression fitting into place engage threads and turn until finger tight Then tighten one more turn with wrench Do not overtighten Refer to Fig 5 and 6 6 Connect other end of tubing to pilot burner accord ing to pilot burner manufacturer instruc...

Page 6: ... Connect control circuit to gas control terminals See Fig 3 and 8 9 or 10 4 Adjust the thermostat heat anticipator to 0 7 the rat ing stamped on the valve operator Fig 7 Install wire adapter for hot surface or direct spark ignition systems Pilot plug must be in the valve pilot opening Fig 8 VR8245M VR8345M H wiring connections in intermittent ignition system M8440A PV M V PV M V OFF ON PILOT GAS S...

Page 7: ... 0 2 VALVE LOAD 120VAC HOT 570A0056 WARNING Explosion hazard Can cause serious injury or death This device can malfunction if it gets wet Never try to use a device that has been wet replace it GND BURNER 24V GND VALVE GND 24V LED L2 HSI HSI L1 SENSE VALVE MPLS MN 55422 SEE INSTRUCTIONS FOR REMOTE SENSE DUAL ROD APPLICATIONS TRIAL TIME NUM OF TRIALS CONFIGURATION PLUG 120VAC NEUTRAL TRIAL TIME 7 SE...

Page 8: ...er solution anytime work is done on a gas control Gas Leak Test 1 Paint all pipe connections upstream of the gas con trol with a rich soap and water solution Bubbles indicate a gas leak 2 If a gas leak is detected tighten the pipe connection CAUTION Fire or explosion hazard Stand clear while lighting main burner to prevent injury caused from hidden gas leaks that could cause flashback in the appli...

Page 9: ... burner lightoff Make sure that the main burner lights smoothly and that all ports remain lit 2 Check the full rate manifold pressure listed on the appliance nameplate Gas control full rate outlet pressure should match this rating 3 With main burner operating check the control flow rate using the meter clocking method or check pres sure using a manometer connected to the outlet pressure tap on the...

Page 10: ...e to the safety shutdown or safety lockout tests recommended for the intermittent pilot IP hot surface HSI or direct spark DSI module When different use the procedure rec ommended for the module 1 Turn off gas supply 2 Set the thermostat or controller above room temperature to call for heat 3 Intermittent Pilot Ignition Watch for an igni tion spark at pilot burner either immediately or following p...

Page 11: ...s that are used seasonally should be checked before shutdown and again before the next use Consequence of unexpected shutdown Where the cost of an unexpected shutdown would be high the system should be checked more often Dusty wet or corrosive environment Since these environments can cause the gas control to deteriorate more rapidly the system should be checked more often NOTE If the gas control w...

Page 12: ...ge tampering bent terminals missing or broken parts stripped threads or evidence of exposure to heat IMPORTANT Follow the operating instructions provided by the manufacturer of your heating appliance The information below will be of assistance in a typi cal gas control application but the specific con trols used and the procedures outlined by the manufacturer or your appliance may differ and requi...

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