Burnham Series 5B User Manual

Page 34

FIG. 33

PILOT PIPING - EI CONTROL SYSTEM (V88A)

U.S.A. 5010B THRU 5026B - NAT. GAS

CANADA - 5006B THRU 5026B - NAT. GAS

COMPLETION OF WIRING – Connect power supply

fused disconnect switch, service switch, primary side

of transformer, gas valves and remaining controls – see

Fig. 42, 43 or 44 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.

OP Control System

INSTALLATION OF PILOT SAFETY SWITCH AND

PILOT PIPING – Using two #10-32 x 2” MS and nuts,

install the L62GB-3C pilot safety switch bracket on the

manifold just to the right of the main burner with pilot.

Install L62GB-3C pilot safety switch on bracket using

two #8 x ½” SMS. “IN” on pilot safety switch should

be pointed in the direction of the Gas Train to which the

pilot safety switch is to be connected, see Fig. 34.

Using ¼” OD Aluminum Tubing, connect the pilot

valve installed in the manual shut-off valve in the gas

train, to the inlet of the RV-12LT regulator (packed

in gas train carton). Regulator should be above Gas

Train and near front of boiler, see Fig. 35. Install 1/8”

tee into outlet of regulator (USA boilers only) and,

using ¼” OD tubing, connect outlet of tee to “IN”

connection on pilotstat, see Fig. 35. Connect the Q309

thermocouple to pilot safety switch. Using ¼” OD

aluminum tubing, connect the outlet of the pilotstat to

the tubing or fittings connected to the pilot burner, see

Fig. 35.

SecTiON iii – iNSTALLATiON iNSTRUcTiONS (continued)