Honeywell VR8204 Manuel D’Utilisation

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INSTALLATION INSTRUCTIONS
69- 1225- 4
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. 
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. 
Table 1. Valve Capacity
a
a
Capacity based on 1000 Btu/ft
3
, 0.64 sp gr natural gas at 1 in. wc pressure drop (37.3 MJ/m
3
, 0.64 sp gr natural gas 
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.
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.
Model
Size
 Inlet-Outlet 
(in.)
AGA Certified Capacity for 
Natural Gas
AGA Certified Minimum 
Regulation for Natural Gas
AGA Certified Maximum 
Regulation for 
Natural Gas
ft
3
/hr
m
3
/hr
ft
3
/hr
m
3
/hr
ft
3
/hr
m
3
/hr
VR8104
1/2 x 1/2
85
2.3
10
d
0.4
120
3.4
VR8204
150
4.2
20
e
0.6
200
5.7
VR8304
b,c
240
6.8
30
f
0.8
340
9.6
VR8304
b,c
1/2 x 3/4
270
7.6
370
1.05
VR8304
b,c
3/4 x 3/4
300
8.5
415
11.8
Gas
Specific Gravity
Multiply Listed 
Capacity By
Manufactured
0.60
0.516
Mixed
0.70
0.765
Propane
1.53
1.62