Raypak 302-902 - Manual (Page 55)

SECTION N: HI-DELTA INITIAL START-UP
1.0 TOOLS NEEDED
• One 12-0-12, 24” scale manometer
• 6-0-6, 12” scale manometers
• 7/16” open end wrench
• 1/2” open end wrench
• Screwdriver
• Volt meter
• 3/16” Allen wrench
• Jumper cable
2.0 PREPARATION FOR START-UP
WARNING: DO NOT TURN ON GAS AT THIS TIME
2.1 Check Power Supply
With volt meter at incoming power check voltage between:
Hot - Common
( ~ 120 VAC)
Hot - Ground ( ~ 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
• Attach 24" scale manometer to the first main gas shut-off valve pressure tapping.
• Attach one 12" scale manometer to the outlet side of the second main gas shut-off valve pressure tapping.
• Attach one 12" scale manometer to — Pull rubber tube from air pressure switch off the aluminum tubing and
connect the manometer using a tee.
Turn Off Main Gas Valve;
2.3 Check the Gas Supply Pressure
1. Slowly turn on main gas shut-off valve;
2. Read the gas supply pressure from the manometer; minimum supply pressure for natural gas is 5” W.C.,
recommended supply is 7” W.C., minimum supply pressure for propane is 11” W.C.
3. If pressure is > 14" W.C.; Turn off the valve;
4. Check if the service regulator is installed and/or adjust the service regulator;
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