Service Manual
1 Service
Boiler piping
This piping reference is included to specify the Boiler Piping specific to the Crest boiler. This piping scheme is important for proper operation of the SMART TOUCH control. See the Crest Installation and Operation Manual for more detailed piping diagrams.
Single Boiler - Recommended - Primary / Secondary Piping with a Hot Water Generator
FROM SYSTEM
HOT WATER
GENERATOR
WATER
GENERATOR
CIRCULATOR
BOILER PUMP
SYSTEM RETURN |
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|
|
SENSOR |
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12" |
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MAX | BALL VALVE |
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|
RELIEF |
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| |
(TYPICAL) |
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| |
VALVE | AIR SEPERATOR |
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| |
| DRAIN PORT |
| |
| (TYPICAL) |
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| SYSTEM SUPPLY |
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| SENSOR |
| |
|
| SYSTEM |
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|
| CIRCULATOR | |
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|
| TO SYSTEM |
BOILER |
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|
|
DRAIN | PRESSURE |
| MAKE UP |
| REDUCING VALVE | BACK FLOW | |
|
| WATER | |
|
| PREVENTER | |
EXPANSION | PRESSURE |
| |
|
| ||
TANK | GAUGE |
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(RECOMMENDED) |
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|
FLOW CHECK |
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|
VALVE (TYPICAL) |
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Single Boiler - Alternate - Full Flow System Piping
RELIEF
VALVE
BALL VALVE (TYPICAL)
FROM SYSTEM
BOILER DRAIN 
AIR SEPERATOR
DRAIN PORT (TYPICAL)
SYSTEM
CIRCULATOR
EXPANSION |
|
TANK |
|
PRESSURE | PRESSURE |
GAUGE | REDUCING VALVE |
|
TO SYSTEM
BACK FLOW 
MAKE UP
PREVENTER WATER
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