VS8510/VS8520 MILLIVOLT COMBINATION GAS CONTROL
68-0203
3
Model Voltage and Capacity:
See Table 2.
Table 2. VS8510/VS8520 Voltage and capacity ratings.
Regulation Capabilities:
See Table 3.
Table 3. HI/LO and Standard Regulator Specification Pressures in inches wc(kPa)
Type of Gas
HI/LO Regulator Setting Ranges
Standard Regulator Setting Ranges
Natural
3.0 - 3.7 / 1.2 - 3.5 in.
3.0 in. Minimum to 5.0 in. Maximum
LP
9.0 - 12 / 3.5 - 6.5 in.
8.0 in. Minimum to 12.0 in. Maximum
BTUH x 1K
PRESSURE DROP (IN. W.C.)
.5
1.5
1.0
2.0
20
40
60
80
100
120
50
90
100
60
BOTTOM INLET
SIDE INLET
VS8510/20-NATURAL GAS
M11715
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).
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
Model
Operator
Thermocouple
Capacity at 1”
pd with Side
Inlet
Capacity at 1”
pd with
Bottom Inlet
Minimum
Regulated
Capacity
Maximum
Regulated
Capacity
VS8510
750 mV
-----
60,000 BTUH
50,000 BTUH
10,000 BTUH
100,000 BTUH
VS8520
750 mV
30 mV
60,000 BTUH
50,000 BTUH
10,000 BTUH
90,000 BTUH