Raypak 751 Installation And Operating Instructions Manual page 47

result in a fire or explosion.
5. Do not use this appliance if any part has been
under water, immediately call a qualified service
technician to inspect the appliance and to replace
any part of the control system and any gas control
which has been under water.
Pre-Start-up Check
1. Verify boiler is filled with water.
2. Check system piping for leaks. If found, repair
immediately.
3. Vent air from system. Repeat steps 4 and 5 under
"Fill the System." Air in system can interfere with
water circulation and cause improper heat distribu-
tion.
Fig. 37: Component and Pressure Tap locations
47
Fig. 38: Blower "T" Fitting Detail