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Honeywell VR8104 Installation Instructions Manual

Intermittent pilot combination gas controls
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VR8104, VR8204, and VR8304
Intermittent Pilot Combination
Gas Controls
APPLICATION
These intermittent pilot gas controls are used in gas-fired
appliances with up to 415 ft3/hr capacity at 1 in. wc
pressure drop (8.5 m3/hr at 0.25 kPa) on natural gas.
They include safety shutoff, a manual valve, two
automatic operators, a pressure regulator and a pilot
adjustment.
Size
Inlet-Outlet
Model
(in.)
VR8104
1/2 x 1/2
VR8204
b,c
VR8304
1/2 x 3/4
b,c
VR8304
3/4 x 3/4
b,c
VR8304
a
Capacity based on 1000 Btu/ft
at 0.25 kPa pressure drop).
b
Capacity is reduced by 5 percent when using an outlet screen.
c
Valves are guaranteed at only 77 percent of the rating.
d
Minimum regulation for LP gas is 15,000 Btuh.
e
Minimum regulation for LP gas is 40,000 Btuh.
f
Minimum regulation for LP gas is 50,000 Btuh.
Table 2. Gas Capacity Conversion Factor.
Gas
Specific Gravity
Manufactured
0.60
Mixed
0.70
Propane
1.53
Table 1. Valve Capacity
AGA Certified Capacity for
Natural Gas
3
3
ft
/hr
m
/hr
85
2.3
150
4.2
240
6.8
270
7.6
300
8.5
3
, 0.64 sp gr natural gas at 1 in. wc pressure drop (37.3 MJ/m
Multiply Listed
Capacity By
0.516
0.765
1.62
INSTALLATION INSTRUCTIONS
These gas controls are available in a range of valve
capacities, see Table 1. (Table 2 provides gas capacity
conversion factors.) The suffix letter indicates
temperature range and regulator type, see Table 3.
For CE-approved models, the relevant sections of these
instructions and Table 4 are applicable.
a
AGA Certified Minimum
Regulation for Natural Gas
3
3
ft
/hr
m
/hr
d
0.4
10
0.6
e
20
0.8
f
30
CE-Only Models
These gas controls are used in appliances up to 121kW
or 415 kBTUH on natural gas and approved on EN126,
which consists of one automatic safety shutoff valve,
Class B or C, one servo-operated shutoff valve, Class D,
pressure governor, Class C, manually-operated valve,
with or without pilot outlet. Only the A, H and U models
are available CE-approved.
Table 4 shows the additional specifications for the
CE-only models.
AGA Certified Maximum
Regulation for
Natural Gas
3
3
ft
/hr
m
/hr
120
3.4
200
5.7
340
9.6
370
1.05
415
11.8
3
, 0.64 sp gr natural gas
69-1225—5

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  Summary of Contents for Honeywell VR8104

  • Page 1 VR8104, VR8204, and VR8304 Intermittent Pilot Combination Gas Controls INSTALLATION INSTRUCTIONS APPLICATION These gas controls are available in a range of valve capacities, see Table 1. (Table 2 provides gas capacity conversion factors.) The suffix letter indicates These intermittent pilot gas controls are used in gas-fired temperature range and regulator type, see Table 3.
  • Page 2 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS Table 3. Model Number Suffix Letter Designation. Ambient Model No. Temperature Pressure Suffix Letter Range Regulator Type 0°F to 175°F Standard (-18°C to +79°C) Step-opening Slow-opening Nonregulating (on-off) -40°F to +175°F Slow-opening (-40°C to +79°C)
  • Page 3: Specifications

    VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS SPECIFICATIONS Table 6. Flange Adapter Part Numbers. Part Number Inlet/Outlet Body Pattern: Straight through; see Table 1 for inlet and Pipe Size Flange Without Hex With Hex outlet size. (in. NPT)
  • Page 4: Installation

    VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS Corrosive Chemicals CAUTION Corrosive chemicals can attack the control, eventually causing a failure. If chemicals are used for routine Equipment Damage. cleaning, avoid contact with the control. Where chemicals Can burn out valve coil terminals.
  • Page 5 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS OTHER SIDE PRESSURE OF CAP REGULATOR VALVE OUTLET FLANGE M11678 9/64 INCH HEX SCREWS (4) Fig. 1. Top view of convertible DO NOT OVERTIGHTEN SCREWS. TIGHTEN TO pressure regulator cap. 25 INCH-POUNDS.
  • Page 6 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS Apply a moderate amount of good quality pipe compound (do not use Teflon tape) only to the pipe, DROP leaving two end threads bare. On LP installations, PIPED HORIZONTAL use a compound resistant to LP gas. See Fig. 4.
  • Page 7 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS WHEN FLANGE IS USED WHEN FLANGE IS NOT USED APPLY WRENCH APPLY WRENCH FROM TOP OR TO FLANGE ONLY BOTTOM OF GAS CONTROL TO EITHER SHADED AREA M3079A Fig. 5. Proper use of wrench on gas control with and without flanges.
  • Page 8: Startup And Checkout

    VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS Turn On Main Burner Follow appliance manufacturer instructions or turn up S8600 thermostat to call for heat. VENT DAMPER TH-W PLUG (BURNER) (OPT) GND 24V (OPT) Perform Gas Leak Test MV MV/PV PV...
  • Page 9 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS Check and Adjust Gas Input NOTE: If the burner firing rate is above 150,000 Btuh on VR8304 models (see Table 1 for VR8304 and Burner Ignition capacities), it may not be possible to deliver the desired outlet pressure.
  • Page 10 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS 4. With main burner operating, check the gas control control, check the control inlet pressure using a flow rate using the meter clocking method or check manometer at the inlet pressure tap of the control. If...
  • Page 11: Maintenance

    VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS Table 8B. Pressure Regulator Specification Pressures (kPa). Factory Set Nominal Outlet Pressure Setting Range Type of Nominal Inlet Model Type Pressure Range Step Full Rate Step Full Rate Standard, 1.2 to 1.7 —...
  • Page 12 VR8104, VR8204, AND VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROLS INSTRUCTIONS TO THE STOP: Read the Warnings Above Before Proceeding. HOMEOWNER The pilot flame is lit automatically. If the appliance does not turn on when the thermostat is set several degrees...

This manual is also suitable for:

Vr8204Vr8304