33
IX System Piping
A. General System Piping Precautions
WARNING
INSTALL BOILER SO THAT THE GAS IGNITION SYSTEM COMPONENTS ARE PROTECTED
FROM WATER (DRIPPING, SPRAYING, RAIN, ETC) DURING APPLIANCE OPERATION AND
SERVICE (CIRCULATOR REPLACEMENT, ETC).
CAUTION
THE HEAT EXCHANGER USED IN THE FCM IS MADE FROM A SPECIAL ALUMINUM ALLOY.
FAILURE TO TAKE THE FOLLOWING PRECAUTIONS COULD RESULT IN SEVERE BOILER
DAMAGE.
• BEFORE CONNECTING BOILER, MAKE SURE THAT THE SYSTEM IS FREE OF SEDI-
MENT, FLUX AND ANY RESIDUAL BOILER WATER ADDITIVES. FLUSH THE SYSTEM IF
NECESSARY TO ENSURE THAT THESE CONTAMINATES ARE REMOVED.
• DO NOT CONNECT THIS BOILER TO A SYSTEM THAT IS SUBJECT TO REGULAR ADDI-
TIONS OF MAKEUP WATER OR ONE WHICH EMPLOYS RADIANT TUBING WITHOUT AN
OXYGEN
BARRIER.
• DO NOT ADD ANTIFREEZE OR OTHER BOILER WATER TREATMENT CHEMICALS
EXCEPT THOSE LISTED IN PART XI OF THIS MANUAL.
• MAINTAIN THE PRESSURE IN THE BOILER AT A MINIMUM OF 12 PSI.
• DESIGN SYSTEM TO ENSURE THAT THE FLOW FALLS WITHIN THE LIMITS CALLED
FOR IN TABLE 9.1.
B. System Design
Proper operation of the FCM boiler requires that the water
fl
ow through the boiler remain within the limits shown in Table
9.1 any time the burner is
fi
ring. Failure to maintain the
fl
ow within these limits could result in erratic operation or premature
boiler failure.
There are two basic methods that can be used to pipe the FCM boiler. Method #1 is almost always preferred. The
instructions on the following pages describe these methods for piping FCM boilers and explain how to size the circulator and
piping. Additional information on hydronic system design may be found in Installation of Residential Hydronic Systems (Pub.
#200) published by the Hydronics Institute in Berkeley Heights, NJ.
TABLE 9.1: FLOW REQUIREMENTS THROUGH BOILER
BOILER MODEL
MIN. REQUIRED FLOW
(GPM)
MAX. ALLOWABLE
FLOW (GPM)
FCM090
4.0
9.0
FCM120
4.5
12.0
Содержание FREEDOM FCM120
Страница 8: ...8 Figure 5 1 Wall Mounting Hole Locations ...
Страница 9: ...9 Figure 5 2 Boiler Mounting Hardware ...
Страница 11: ...11 Figure 6 1 Boiler Installed In A Confined Space Ventilation Air From Inside ...
Страница 22: ...22 Figure 7 10 Installation of Reducing Elbow on Concentric Boiler Collar Figure 7 11 Dimension L ...
Страница 24: ...24 Figure 7 14 Preparing Terminal Section for Installation in the Wall Figure 7 15 Attaching Terminal Section ...
Страница 31: ...31 Figure 7 21 Condensate Piping Arrangement ...
Страница 37: ...37 Figure 9 4c Modular Boiler Piping Figure 9 4b Piping Method 1 Indirect Water Heater Loop Piping Shaded ...
Страница 44: ...44 Figure 10 1 Wiring Connections Diagram ...
Страница 45: ...45 Figure 10 2 Ladder Diagram ...
Страница 46: ...46 Figure 10 3 Wiring of Isolation Relay for Control of Two Heating Circulators ...
Страница 49: ...49 FCM Series Lighting and Operating Instructions ...
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