18
Finned copper tube gas boilers & water heaters – Boiler manual
FTXLF-IOM-HN-1-110308 Copyright 2008 Mestek, Inc.
NOTES:
Boiler circuit piping must be large enough to handle maximum flow through unit.
1.
Boiler pump sized to boiler design flow requirements.
2.
All boilers furnished with factory mounted outlet water temperature gauge.
3.
Boiler pump purging required. use terminals supplied.
4.
All primary/secondary piping systems require a remote operator.
5.
Secondary loop pipe diameter must be sized large enough to handle maximum flow through all units.
6.
Adjustment Procedure
To Maintain Inlet Temperature
Above Dew Point
T1-Temp-Min = 140
o
F, 60
o
C Sealed Combustion
1. Turn heater on and open valves A & B.
2. After steady-state operation, if T1 is less than
Temp-Min slowly close valve B until T1 climbs to
desired operating temperature above Temp-Min.
3. If T1 is greater than desired operating tempera-
ture, slowly close valve A to adjust to lower de-
sired temperature above Temp-Min.
4. Check after system operating temperature has
stabilized. Make final adjustments.
5. Follow same adjustment procedure for sealed
combustion.
Low Temperature Piping (See Notes and Adjustment Procedures)
Figure 12
Multiple Boiler Piping (See notes)
Figure 13
These drawings show
suggested piping con-
figuration and valving.
Check with local codes
and ordinances for spe-
cific requirements.
