Honeywell VS8510 Manual page 3

Model Voltage and Capacity:
See Table 2.
Model Operator
VS8510 750 mV
VS8520 750 mV
Regulation Capabilities:
See Table 3.
Table 3. HI/LO and Standard Regulator Specification Pressures in inches wc(kPa)
Type of Gas
Natural
LP
Main Gas Connection:
The Millivolt Combination Gas Control has a 3/8 in. thread,
NPT or BSP.
Pilot Gas Connection and Flow:
• Connection size: 7/16 –24 UNS.
• Flow 1700 Btuh/H at 4.0 in. w.c. inlet.
• Option M10x1 connection.
Pilot Location:
• Inlet side.
• Bottom.
Thermocouple Size/Connections:
• 11/32-32 UNS double lead.
• Outlet.
• Bottom.
• Option MM10x1 connection.
Inlet/Outlet Options:
• Straight through.
• Bottom.
• 3/8" x 3/8" NPT or BSP.
Thermocouple and Pilot:
• Metric or UNS.
Ambient Temperature:
• 0˚F to 175˚F (-18˚C to 79˚C).
• Option for -40˚F (-40˚C), 225˚F (107˚C).
Shipping Temperature:
-40˚F to 175˚F (-40˚C to 79˚C).
VS8510/VS8520 MILLIVOLT COMBINATION GAS CONTROL
Table 2. VS8510/VS8520 Voltage and capacity ratings.
Capacity at 1"
pd with Side
Thermocouple
Inlet
----- 60,000 BTUH
30 mV 60,000 BTUH
HI/LO Regulator Setting Ranges
3.0 - 3.7 / 1.2 - 3.5 in.
9.0 - 12 / 3.5 - 6.5 in.
Capacity at 1"
pd with
Bottom Inlet
50,000 BTUH
50,000 BTUH
Standard Regulator Setting Ranges
3.0 in. Minimum to 5.0 in. Maximum
8.0 in. Minimum to 12.0 in. Maximum
Pressure Regulation:
Servo regulator with adjustable outlet pressure. Typically 3.5
in. wc for natural gas; 11 in. wc for LP.
Interrupter (ECO):
1/4 in. tab connectors.
Pressure Taps:
European style inlet and outlet.
Opening Characteristics:
Snap open.
Screens:
Fine mesh inlet screen standard; optional outlet screen.
Approvals:
International Approval Services (IAS) Certificate: C2030022.
European Community (CE) Certificate pending.
Australian Gas Approval pending.
IAS Rated Capacity
• 60,000 BTUH at 1 in. wc pressure drop for side inlet.
• 50,000 BTUH at 1 in. wc pressure drop for bottom inlet.
PRESSURE DROP CAPACITY CURVE – NATURAL GAS
VS8510/20-NATURAL GAS
2.0
1.5
1.0
.5
20 40
BOTTOM INLET
SIDE INLET
3
Minimum Maximum
Regulated Regulated
Capacity Capacity
10,000 BTUH 100,000 BTUH
10,000 BTUH 90,000 BTUH
90 100
50
60
60 80 100 120
BTUH x 1K
M11715
68-0203