Burnham Series 5B Installation, Operating And Service Instructions page 37

SecTiON iii – iNSTALLATiON iNSTRUcTiONS (continued)
4.
COMPLETION OF WIRING – Connect power supply
fused disconnect switch, service switch, primary side
of transformer, gas valves and remaining controls – see
Fig. 40, 41 or 42 for wire type and connections to be
made. All wiring must be adequately supported and
strain relief provided. All wiring including ground
connections must comply with the requirements of
the authority having jurisdiction and, in the absence
of such, to the National Electrical Code, ANSI NFPA
No. 70-2005, or the Canadian Electrical Code, C22.1,
whichever is applicable.
EP Control System
1.
INSTALLATION OF "EP PANEL", - Attach the EP
Control Panel with RM7890 control, see Fig. 34, 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 fastening holes provided for this purpose,
use (4) four #8 SMS to fasten the Control Panel to the
front top jacket panel. If Foot Mounted Transformer,
connect to J-box using straight connector, BX, straight
connector and ½" pipe nipple. Drill holes in Jacket
and fasten Transformer using SMS. Install Honeywell
fiG. 33
piloT pipinG - ei conTrol sysTem (V88a)
u.s.a. 5010b Thru 5026b - naT. Gas
canada - 5006b Thru 5026b - naT. Gas
RM7890 Control (located in RM7890 Control Carton)
onto prewired sub base.
Remove RM7890's Dust Cover. With a pair of side
cutters, carefully snip both wire leads to the brown
resistor labelled "JR2" and discard it. Replace Dust
Cover. Install Honeywell R7847 Flame Amplifier.
Install heat shield (optional).
2.
INSTALLATION OF PILOT PIPING – Install the
H91WA-4 pilot solenoid valve in the bottom center
knockout of the J-box using conduit fittings furnished,
see Fig. 35. Install RV-12LT regulator, (Packed in Gas
Train Carton) and 1/8" tee in the ¼" OD pilot tubing as
shown in Fig. 35.
3.
INSTALLATION OF BLEED PIPING – Using ¼" OD
aluminum tubing, install a bleed line on both diaphragm
valves, connect together, see Fig. 35, and, on USA
boilers, run tubing to bleed line protruding from inside
base, see Fig. 35. On boilers installed in Canada, run
bleed line to outdoors.
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