Installation Of Bleed Piping - Burnham 5B Series Installation And Operation Manual

SecTiON iii – iNSTALLATiON iNSTRUcTiONS (continued)
INSTALLATION OF PILOT SAFETY SWITCH
OP CONTROL SYSTEM
2.
INSTALLATION OF BLEED PIPING – Using ¼" OD
aluminum tubing, install a bleed line on both diaphragm
valves, connect together, see Fig. 27 or 29 and run
FIG. 34
OP CONTROL SYSTEM
tubing to bleed line protruding from inside base, see
Fig. 35. On boiler installed in Canada, run bleed line to
outdoors.
3.
INSTALLATION OF "OP" PANEL AND WIRING
OF PILOT AND PILOTSTAT – Attach the OP Control
Panel with RM7890 control, see Fig. 36, to the front
top jacket panel, preferably on the closest jacket panel
to the gas train installed. There are (3) three KO's and
(4) four fastener holes provided for this purpose, use (4)
four #8 SMS to fasten the Control Panel to the front top
jacket panel.
Connect the two wires from the Q179D pilot to the
RM7890 sub-base as follows:
a. Ground Wire (200ºC) to the "12" terminal
b. F lame detector wire (Honeywell 1298020) to "11"
terminal
c. T hermocouple Lead to L62 Pilotstat.
Wire the pilotstat to the gas valve transformer and to the
V88A Gas Valves using the 105ºC wire furnished, see
Fig. 46 or 47. If Foot Mounted transformer, connect to
J-box using straight connector, BX, straight connector
and ½" pipe coupling. Drill holes in Jacket and fasten
Transformer with SMS.
FIG. 35
PILOT PIPING
35