Burnham Series 5B User Manual

Page 36

Run these wires to outside of jacket on underside of

manifold and secure in this position with Wire Ties

furnished to provide strain relief. Provide adequate

support and strain relief for wiring outside jacket.

COMPLETION OF WIRING – Connect power supply

fused disconnect switch, service switch, primary and

secondary side of gas valve transformer, primary side of

ignition transformer, and remaining controls – see Fig.

46 – 49 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

INSTALLATION OF “EP PANEL”, - Attach the EP

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 fastening holes provided for

this purpose, use (4) four #8 SMS to fasten the Control

FIG. 36

INSTALLATION OF OP AND EP

CONTROL PANEL

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.

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. 37. Install RV-12LT regulator,

(Packed in Gas Train Carton) and 1/8” tee in the

¼” OD pilot tubing as shown in Fig. 37.

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, on USA boilers, run tubing to bleed

line protruding from inside base, see Fig. 37.

On boilers installed in Canada, run bleed line to

outdoors.

INSTALLATION OF IGNITION

TRANSFORMER AND WIRING OF PILOT – If

space permits, mount the ignition transformer on

the Jacket above the Gas Train using four #8 x

½” SMS. Holes will have to be drilled for this

purpose. If space does not permit mounting the

Ignition Transformer on the Jacket, install the

Ignition Transformer on a nearby wall.

Connect the two wires from the Q179C pilot to

the RM7890 sub-base as follows:
a. Ground Wire (200ºC) to the “12” terminal
b. Flame detector wire (Honeywell 1298020) to

“11” terminal

c. Ignition Cable (Honeywell 1061012) to the

Secondary (High Voltage) terminal of the

Ignition Transformer

Run these wires to outside of jacket on underside

of manifold and secure in this position with Wire

Ties furnished to provide strain relief. Provide

adequate support and strain relief for wiring

outside jacket.

SecTiON iii – iNSTALLATiON iNSTRUcTiONS (continued)