Raypak 750 Boiler User Manual


 
SECTION O: ADB INITIAL START-UP
1.0 TOOLS NEEDED
One 8-0-8 , 16” scale manometer (or larger)
Three 4-0-4, 8” scale manometers (or larger)
“T” fitting
7/16” and 1/2" open end wrenches
Small and large flat-head screwdrivers
Volt meter
Amp probe
Elec. Dual reading thermometer with strap on sensors
3/16” Allen wrench
Remote switch with 12" minimum lead wires (“Monkey” switch)
Combustion analyzer
2.0 PREPARATION FOR START-UP
W ARNING: DO NOT TURN ON GAS AT THIS TIME
2.1 Check Power Supply
With volt meter at incoming power check voltage between:
Hot - Common (approx 120 VAC)
Hot - Ground (approx 120 VAC)
Common - Ground (< 1 VAC)
If Common - Ground is > 1 VAC - STOP: Contact electrician to correct ground failure. Warning: Failure to do this
may burn out 120V-24V transformer, or may cause other safety control damage or failure.
2.2 Attach Manometers to Measure Pressures (See Figure: O-1)
Attach 16" scale manometer to the first main gas shut-off valve pressure tapping, Location (1)
Attach one 8" scale manometer to the outlet side of the second main gas shut-off valve pressure tapping, Location
(2).
Attach one 8" scale manometer to the outlet side of pilot gas valve pressure tapping, Location (3).
Attach one 8" manometer to "T" fitting, air pressure switch, and aluminum tubing, Location (4).
Turn Off Main Gas Valve;
Turn Off Pilot Gas Valve;
Reset Low Gas Pressure Cut-off Switch;
2.3 Bleed Air from Gas Line
CAUTION: Make sure there is no ignition source in the boiler room
With power off, slightly open union outside the cabinet to bleed air.
Close union when you smell gas.
Wait minimum 5 minutes to clear the gas out of the boiler room before continuing.
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