INSTALLATION AND OPERATION INSTRUCTIONS
1-22
SFC BOILER / WATER HEATERS - SFC 199
Figure 22: Boiler trim basic options – concept drawing is only a simple schematic guide
For best results, use a primary/secondary piping system, with a boiler’s loop
using 1” piping (see section 1.6.2). The unit comes with the (primary) pump
installed and generally provides adequate flow for the unit and primary loop
piping only.
Figure 2
3
: Permitted and prohibited space heating
WARNING
During operation, the relief
valve may discharge large
amounts of steam and/or hot
water. To reduce the potential
for bodily injury and property
damage, a discharge line
MUST be installed that:
1.
Is connected from the
valve outlet with no
intervening valve and
directed downward to a
safe point of discharge.
2.
Allows complete drainage
of both the valve and the
discharge line.
3.
Is independently supported
and securely anchored to
avoid applied stress on the
valve.
4.
Is as short and straight as
possible
5.
Terminates freely to
atmosphere where any
discharge is clearly
visible and is at no risk of
freezing.
6.
Terminates with a plain
end which is not threaded.
7.
Is constructed of a material
suitable for exposure to
temperatures of 375°F or
greater.
8.
I
s, over its entire length,
of a pipe size equal to or
greater than that of the
valve outlet.
DO NOT CAP, PLUG OR
OTHERWISE OBSTRUCT THE
DISCHARGE PIPE OUTLET!
CAUTION
Installers should inquire of
local water purveyors as to the
suitability of their supply for use
in hydronic heating systems. If
water quality is questionable,
a local water treatment expert
must be consulted for testing,
assessment and, if required,
treatment.
Alternatively, water or hydronic
fluid of known quality can be
brought to the site.
