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7

        

Dual Fuel Supplemental Manual

 WARNING

Do not check for gas leaks with an open 
flame -- use the bubble test.  Failure to 
use the bubble test or check for gas leaks 
can cause severe personal injury, death, or 
substantial property damage.

14.  Turn on the gas supply at the manual gas valve.

15.  Turn the power switch to the “ON” position.

16.  Adjust the temperature set point on the control panel of 
 

the SMART TOUCH control module to the desired 

 

water temperature so the appliance will call for heat.

17.  Check burner performance by cycling the system while 
 

you observe burner response.  The burner should ignite 

 

promptly.  Flame pattern should be stable.  Turn system 

 

off and allow burner to cool, then cycle burner again to 

 

ensure proper ignition and flame characteristics.

18.  Repeat Steps 1 - 17 for both natural and LP gas supply.

Ignition problems are especially noticeable in NEW LP 
installations and also in empty tank situations.  This can 
also occur when a utility company shuts off service to an 
area to provide maintenance to their lines.

Gas valve replacement

The gas valve MUST NOT be replaced with a 
conventional gas valve under any circumstances.  As 
an additional safety feature, the  gas valves have flanged 
connections to the venturis and blowers.

Figure 1-1 Inlet Gas Supply Check_Natural

DIR #2000508192

DO NOT adjust or attempt to 
measure gas valve outlet pressure. 

 

Attempting to alter or measure 
the gas valve outlet pressure could 
result in damage to the valve, 
causing potential severe personal 
injury, death, or substantial property 
damage.

Failure to follow all precautions 
could result in fire, explosion, or 
death!

 WARNING

 WARNING

1  

Gas connections 

(continued)

     

Gas Pressure

The gas pressure must remain between 4 inches w.c. (.99 kPa) 
minimum and 14 inches w.c. (3.5 kPa) maximum for Natural 
gas and between 4 inches w.c. (.99 kPa) minimum and 14 
inches w.c. (3.5 kPa) maximum for LP gas during standby 
(static) mode and while in operating (dynamic) mode.  If an 
in-line regulator is used, it must be a minimum of 10 feet (3 m) 
from the Crest boiler.  It is very important that the gas line is 
properly purged by the gas supplier or utility company.  Failure 
to properly purge the lines or improper line sizing, will result 
in ignition failure.

Figure 1-2 Inlet Gas Supply Check_Propane

DIR #2000508193

Содержание Crest 1251

Страница 1: ...along with the Crest Installation and Operation Manual and the Crest Service Manual before installing Perform steps in the order given Failure to comply could result in severe personal injury death o...

Страница 2: ...situation which if not avoided may result in minor or moderate injury CAUTION used without the safety alert symbol indicates a potentially hazardous situation which if not avoided may result in prope...

Страница 3: ...ernal to the appliance Do not use this boiler if any part has been under water The possible damage to a flooded appliance can be extensive and present numerous safety hazards Any appliance that has be...

Страница 4: ...o flow only if the gas valves are powered and combustion air is flowing 7 Small propane valve Valve 1 Propane The small propane gas valve senses the negative pressure created by the blowers allowing g...

Страница 5: ...tes Department of Energy 2 Net AHRI ratings are based on net installed radiation of sufficient quantity for the requirements of the building and nothing need be added for normal piping and pickup Rati...

Страница 6: ...to the appliance 13 Remove the manometer from the pressure tap on top of the gas valve Remove the 1 8 3 mm field supplied fitting and reinstall the pipe plug removed in Step 3 DO NOT adjust or attemp...

Страница 7: ...e replacement The gas valve MUST NOT be replaced with a conventional gas valve under any circumstances As an additional safety feature the gas valves have flanged connections to the venturis and blowe...

Страница 8: ...oming gas pressure less than 4 inches w c 99 kPa If none of the above corrects the problem refer to the Troubleshooting Section of the Crest Service Manual Check system and boiler Check water piping 1...

Страница 9: ...inspect the appliance and to replace any part of the control system and any gas control which has been under water OPERATING INSTRUCTIONS 1 STOP Read the safety information above on this label 2 Set...

Страница 10: ...6 Insert the probe from a combustion analyzer into the hole left by the removal of the fitting 7 Once the boiler has modulated up to rate measure the combustion The values should be in the range list...

Страница 11: ...ot in use FIG 2 3 Figure 2 3 Shutoff Valves NATURAL SHUTOFF VALVE PROPANE SHUTOFF VALVE DIR 2000508189 4 Turn on the shutoff valve for the one in use 5 Turn the main power ON 6 Using the Touch Screen...

Страница 12: ...2 INTEGRATED CONTROL CN3 4 X8 15 X7 7 X8 11 X8 6 X8 16 X8 7 X8 17 X8 1 X8 3 X8 8 X8 2 X8 4 X8 9 X7 1 X7 5 GROUND X11 LCD DISPLAY X4 X5 1 X5 7 X5 2 X5 8 X5 3 X5 9 X5 4 X5 10 X5 5 X5 41 X5 6 CN3 12 BAS...

Страница 13: ...R BL X6 18 X6 8 X1 8 G X6 9 MAIN BLOWER BLOWER R BK GY W T BK X2 3 X1 7 X1 10 X1 5 TRANSITION FLAME SENSE LG CON BRD FLAME SENSE SPARK GENERATOR SPARK ROD X2 5 FLUE DAMPER TRANSFORMER X13 4 FLUE DAMPE...

Страница 14: ...Dual Fuel Supplemental Manual Notes 14...

Страница 15: ...15 Dual Fuel Supplemental Manual Notes...

Страница 16: ...Revision Notes Revision A Change 500001029 initial release MM 100268179_DIR 2000509263 Rev A 10 15...

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