540 Split Flow_GB
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Transcript of 540 Split Flow_GB
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MULTIFUNCTIONAL CONTROL FOR GASBURNING APPLIANCES
540 SPLIT FLOW PROFLAME
9 . 9
5 5
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ApplicationDomestic gas appliances: roomheaters and fireplaces
Main Features
One automatic shut-off valve,split flow.
Normative referenceANSI Z21.21.
Approvals
CSA international.
w w w . s i t c o n t r o l s . c o m
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1 ON-OFF solenoid EV terminals2 Gas inlet3 Gas outlet 1
4 Gas outlet 25 Mounting holes
1
6
35
2
5
5
4
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SYSTEM DESCRIPTION
The Split Flow burner controller has one inlet and two outlets. The inlet is connected to the
outlet of the appliance main safety valve, while the outlets are connected to the primary andsecondary burners respectively. The primary outlet is always open, simply allowing the gas
flow from the safety valve to the primary burner. The secondary outlet is controlled by the
Split Flow and can be open or closed at the user request.
A 6VDC pulse is applied to the solenoid which opens a valve allowing gas to flow to the bur-
ner. The valve will remain open until a pulse of opposite polarity is applied to the coil. The
Split Flow is NOT a safety device, and is only used for controlling burner sections in a gas
appliance.
The appliance manufacturer must verify that the burners light correctly when the appliance
is put into operation with either one or two burners being lit at a time.
The Split Flow is fully compatible for use with the Proflame remote control system.
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The Split Flow burner control is a DC powered device that is installed downstream of the
appliance safety valve.
It allows unobstructed gas-flow to outlet #1 when the safety valve is cycled open, and
controls the gas flow to outlet #2.
See Fig.1 for a block diagram of the system operation:
GAS
INLET
FLI
EV
OUTLET 2
OUTLET 1
Fig. 1: block diagram
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CONSTRUCTION CHARACTERISTICS
Die-cast aluminum alloy valve body Single inlet Side outlet #1 uncontrolled Bottom outlet #2 controlled
USE SPECIFI CATIONS
Inlet filter 200 micron Installation position multipoise Gas families NG, LPG, CNG, Manufactured Operating temperature 32-175F Maximum inlet pressure 1 / 2 PSI
MECHANICAL CONNECTIONS
Gas inlet connection 3/8- 18 NPT ANSI B1.20.1 Outlet connection #1 9/16-24 UNEF ANSI B1.1 Outlet connection #2 9/16-24 UNEF ANSI B1.1
Four mounting holes on the gas inlet allow forflange mounting to the 820 Nova gas valve
1 Wrench landings
ELECTRICAL DATA
EV Coil resistance at 75F Latching Solenoid 10.5
ELECTRICAL CONNECTIONS
Receptacle housing: JWT C2521H02-2P JST SMR-02V-B (x 1)Pin contact: JWT C2521T0B-2 JST SYM-001T-P0.6 (x 2)
Fig. 3: wiring diagram.
EV terminal
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CAPACITY
Fig. 4: Flow rate vs. pressure drop.
0
20
40
60
80
100
120
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Pressure drop (iwc)
P o w
e r
( k B t u / h )
041OUTLET #1 + OUTLET #2
OUTLET #1 OR OUTLET #2
FLOW RATE Q AS A FUNCTION OF PRESSURE DROP P
d=0.64
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FUNCTIONAL DESCRIPTION
OUTLET #1 OPEN
OUTLET #1 AND OUTLET #2 OPEN
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DIMENSIONAL DRAWINGS
NOTE: All the dimensions are expressed in millimeters [inches].
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SIT Controls USA Inc.900 Center Park Drive
Suite J, CharlotteNC 28217 USA
Ph. 704 369 2807, fax 704 522 7945www.sitcontrols.com e-mail: [email protected]
