1
69-0814—1
J.D. • Rev. 4-94 • ©Honeywell Inc. 1994 • Form Number 69-0814—1
VR8404 High Capacity Intermittent
Pilot Combination Gas Control
Application
This high capacity intermittent pilot combination gas
control is used in gas-fired appliances with capacities up to
500 feet
3
/hour at 1 inch wc pressure drop [14.2 meters
3
/
hour at 0.25 kPa] on natural gas. This entire gas control
consists of two valves assembled in parallel on a die-cast
manifold to provide high capacity. Each valve includes a
manual valve and two automatic operators. One valve has a
pilot outlet and the other valve has no pilot outlet. A
nonremovable electrical harness connects both valves. Do
not alter or remove this harness. Three pigtail leads (with
1/4-inch quick connects) provide for field connection. Gas
controls are available for natural gas and LP; they are not
convertible from one gas to another. Bushings are available
to reduce the inlet and outlet of the entire gas control.
Models are available with slow-opening (VR8404H),
standard (VR8404M) and step-opening (VR8404P) regu-
lators. Valves have fixed pressure regulation and are not
adjustable. It is recommended that an appliance shutoff
valve be installed upstream of the VR8404
BODY PATTERN: Straight-through body pattern.
INLET/OUTLET SIZES: 3/4 x 3/4 inch, 3/4 x 1 inch,
1 x 1 inch.
CAPACITY:
a
Capacity based on 1000 Btu/feet
3
, 0.64 specific gravity natural gas at 1 inch wc pressure drop [37.3 MJ/meter
3
, 0.64
specific gravity natural gas at 0.25 kPa pressure drop].
Use conversion factors in Table 1 to convert capacities
for other gases.
TABLE 1—
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
ELECTRICAL RATINGS:
Voltage and Frequency: 24 Vac, 60 Hz. (50/60 Hz
models available on request.)
Current Draw: 1.4A.
Thermostat Heat Anticipator Setting: 1.4A.
TEMPERATURE RATING:
VR8404H: -0° F to 175° F [-18° C to +79° C].
VR8404M,P: -40° F to +175° F [-40° C to +79° C].
ACCESSORY:
Part no. 390427H 3/4 in. x 1 in. Bushing.
APPROVALS:
American Gas Association design certificate: L2025009.
Canadian Gas Association design certificate: L2025009.
Underwriters Laboratories Inc.: MH8191
Installation
WHEN INSTALLING THIS PRODUCT…
1. Read these instructions carefully. Failure to fol-
low them could damage the product or cause a hazardous
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 service
technician.
4. After installation is complete, use these instructions
to check out product operation.
Size
(Inlet x Outlet) (in.)
Capacity (at 1 inch
wc pressure drop
a
)
Minimum
Regulated Capacity
Maximum
Regulated Capacity
3/4 x 3/4
400 feet
3
/hour
[11.3 meter
3
/hour]
200 feet
3
/hour
[5.7 meter
3
/hour]
575 feet
3
/hour
[16.3 meter
3
/hour]
3/4 x 1
450 feet
3
/hour
[12.7 meter
3
/hour]
200 feet
3
/hour
[5.7 meter
3
/hour]
625 feet
3
/hour
[17.7 meter
3
/hour]
1 x 1
500 feet
3
/hour
[14.1 meter
3
/hour]
200 feet
3
/hour
5.7 meter
3
/hour]
720 feet
3
/hour
[20.3 meter
3
/hour]