AM Series Boiler & Water Heater User Manual
CHAPTER 8
– UNIT START-UP
OMM-0100_E
•
GF-146
•
11/15/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 94 of 170
8.1.2 Filling the Heating System
To fill the heating system, proceed as follows:
CAUTION!
The water’s pH must fall within the following limit: 7.5<pH<9.5 and if the system contains
aluminum parts, it must be less than 8.5. This pH value must be measured after steady
condition and after air purging operations has been done. Water out of the above pH values
can result in premature heat exchanger damage.
Filling the Boiler Heating System
1.
Open any automatic air vents in the heating system.
2.
Open the fill valve and proceed to fill the heating system and boiler until the pressure gauge,
item “M” in Figure 8-1, reads the pressure for which the heating system is sized. To
temporarily decrease the minimum water pressure, set parameter 3022 to the desired value
(See Appendix B).
3.
Check that there i
s no water leaking from the fittings. If there is, the leaks must be repaired.
4.
Check the pressure gauge during the purging process. If the pressure has dropped, re-open
the fill valve to bring the pressure back to the desired value. If it was changed, be sure ro set
parameter 3022 back to its original value.
8.2 General Warnings Concerning the Gas Supply
When starting up the unit for the first time the following must be checked:
•
That the unit is supplied with the type of fuel that it is configured to use (see Section 7.1).
•
That the gas supply system is provided with all the safety devices and controls required
under current national and local codes.
•
That the vent and combustion air terminals are properly connected and free from any
blockages.
•
That the condensate drain tube is properly connected (see Section 4.14).
