29
29
FIGURE 21: GAS VALVE DETAIL - HONEYWELL VR8204 AND VR8304
NOTE
When substantial amount of make-up water is used due to lost condensate, or when make-up water is hard or corrosive,
water treatment is required. Contact qualified water treatment company for recommended water treatment compounds
and procedures.
e) Turn off gas supply to boiler per the Operating Instructions - see Figure 19. Drain hot water from boiler through
boiler drain valve to a location where hot water can be safely discharged. Refill the boiler to normal water line level.
If water in the gauge glass does not look clear, repeat above boil-out procedure again until water is clears.
f) Reinstall safety valve and related piping.
g) Conduct pH and Alkalinity test of water in the system. The pH reading should be in 7 to 11 range.
XI. System Start-up (continued)
Summary of Contents for CGS-C Series
Page 24: ...24 FIGURE 17 WIRING DIAGRAM McDONNELL MILLER MODEL 67 LOW WATER CUTOFF X Electrical continued...
Page 27: ...27 27 FIGURE 19 OPERATING INSTRUCTIONS XI System Start up continued...
Page 35: ...35 35 XIII Troubleshooting continued...
Page 37: ...37 37 XIII Troubleshooting continued...
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Page 41: ...41 41 XIV Repair Parts continued...
Page 43: ...43 43 XIV Repair Parts continued...
Page 45: ...45 45 XIV Repair Parts continued...
Page 47: ...47 47 XIV Repair Parts continued...
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