Filter
Top Products
34
K. A.S.M.E. RATED PRESSURE RELIEF VALVE
Each boiler must have a properly sized and installed American Society of Mechanical Engi-
neers rated pressure relief valve. Water expands as it is heated by the burner/boiler sections.
If there is no place for the water to expand its volume, (i.e. a properly sized and properly
functioning expansion tank) pressure on the inside of the boiler and heating system will
increase. The furnished relief valve will automatically open at 30 psig pressure to relieve the
strain on the boiler and heating system from the increasing pressure. The pressure relief
valve discharge must be piped with piping same size as the valve discharge opening to an
open drain, tub or sink, or other suitable drainage point not subject to freezing, in accordance
with A.S.M.E. specifications. Failure to provide the pressure relief valve with piping as herein
described may cause water damage and/or serious bodily injury. The boiler manufacturer is
not responsible for any water damage or personal injury.
L. FLAME ROLLOUT SAFETY SHUTOFF
As required, this boiler is equipped with a manual reset flame rollout safety shutoff means,
which shuts off main burner gas in the event that the flow of combustion products through
the flueways is reduced. In the event of blocked flueways, enough air will not be available to
support combustion, and the S9301 Integrated Boiler Control (IBC) will lockout due to loss of
adequate air flow (after 3 trials for ignition). The PURGE diagnostic indicator lamp (lamp B
on the IBC, see Fig.16) will blink indicating the failure mode as a lack of adequate air flow.
The IBC is manually reset from lockout by either removing and reestablishing the
thermostats call for heat, or by turning the service switch off, then back on. If the boiler
cannot be restored to normal operating condition by resetting the control, contact a qualified
service agency to check heat exchanger flueways for blockage.
M. (OPTIONAL) EXTERNAL CONDENSATE PUMP
For installations where there is no floor drain or other appropriate drainage receptacle avail-
able to receive condensate from the boiler, an external float activated condensate pump with
integral sump is required. This unit can be installed to pump the condensate to a remote tie
in point to a sanitary sewer system. For this application, the boiler must be installed so that
proper pitch of piping to the external condensate reservoir (sump) can be accomplished. Use
wood frame or blocks to raise boiler as required for proper installation.
A. WATER TREATMENT AND FREEZE PROTECTION
1. When filling the boiler and heating system, water treatment is generally not required or
desired. For localities where the water is unusually hard (above 7 grains hardness) or for
low pH water conditions (below 7.0), consult a local water treatment specialist.
a. This boiler is designed for use in a closed hydronic heating system ONLY!
b. Excessive feeding of fresh make-up water to the boiler may lead to premature failure
of the boiler sections.
2. Use clean fresh tap water for initial fill and make-up of boiler.
a. A sand filter must be used if fill and make-up water from a well is to be used.
b. Consideration should be given to cleaning the heating system, particularly in
retrofit situations, where a new boiler is being installed in an older piping system.
START - UP