Appendix B - Ignition Options - Honeywell 7800 Series Installation Instructions Manual

Item Description
V1 Upstream Valve Volume
V2 Downstream Valve Volume
D Pipe Size NPT (in.)
L Pipe Length (ft)
P
Valve Inlet Pressure (psig)
C
Burner Maximum Firing (cf/hr)
a
Divide inches w.c. by 27.7 to get psi.
b
Divide Btuh by 1000 to get cf/hr for natural gas or by 2550 to get cf/hr for LP gas.
APPENDIX B - IGNITION
OPTIONS
Column 1 lists the ignition options.
Column 2 lists the drawing that provides that option. The letter refers to drawings on pages 24–28.
Column 3 refers to the number of poles required on the Fuel Changeover Switch.
IGNITION OPTIONS
Single Fuel
Interrupted Pilot
Intermittent Pilot
Direct Spark Ignition
Dual Fuel
Gas
10 sec. Interrupted Pilot 10 sec. Interrupted Pilot D
10 sec. Interrupted Pilot Intermittent Pilot
10 sec. Interrupted Pilot Direct Spark Ignition
Intermittent Pilot
Intermittent Pilot
Intermittent Pilot
Direct Spark Ignition
RM7898A 7800 SERIES VALVE PROVING PRIMARY RELAY MODULES
Table 14. Schedule 40 Pipe Internal Cross-Sectional Area.
Pipe Size NPT (Inches)
3/8
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
4
Table 15. VPS Worksheet.
a
b
Table 16. Ignition options.
NO VALVE PROVING
Oil
10 sec. Interrupted Pilot G
Intermittent Pilot
Direct Spark Ignition
10 sec. Interrupted Pilot J
Cross-Sectional Area (Sq. In.)
"A"
0.191
0.304
0.533
0.864
1.498
2.036
3.356
4.788
7.393
12.730
Information Lookup Table
12
13
14
—
—
—
DRAWING I.D.
CODE
A - -
B - -
C - -
2
E 3
F 3
3
H 2
I 4
3
25
Results Formula Item
V1
V2
A
L
P
C
FUEL CHANGEOVER POLES
REQUIRED
32-00209—03