Honeywell Honeywell Boiler VR8204 User's Manual

Honeywell Boilers User's Manual - Honeywell Boiler VR8204.
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Copyright © 2000 Honeywell Inc. • All Rights Reserved 

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 Capacitya

a Capacity based on 1000 Btu/ft3, 0.64 sp gr natural gas at 1 in. wc pressure drop (37.3 MJ/m3, 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

ft3/hr

m3/hr

ft3/hr

m3/hr

ft3/hr

m3/hr

VR8104

1/2 x 1/2

85

2.3

10d

0.4

120

3.4

VR8204

150

4.2

20e

0.6

200

5.7

VR8304b,c

240

6.8

30f

0.8

340

9.6

VR8304b,c

1/2 x 3/4

270

7.6

370

1.05

VR8304b,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

0.523701s