Kenmore K90-150 Owner's Manual page 9

The boiler should be placed to provide the most
directconnectionsto the combustionair, vent and
systempipingas possible.
Place crated boiler as close to selected location
as possibleand uncrateboiler.The uncratedboiler
may be movedinto positionwith an appliancedol-
ly or 2-wheelhand truck. The dolly or hand truck
should be insertedunder the right hand side of
the boiler.It is possibleto slidethe boilerfor a short
distanceon a smoothfloor or surface.
NuOTE: Refer to "Locating The Boiler" in Section V for re-_
ired clearances for servicing and maintenance.
J
f
iA cAo.,-,o, AI
Copper supply and return piping must NOT be in-
stalled directly into aluminum boiler section castings
due to galvanic corrosion between dissimilar met-
als. Iron or steel bushings or pipe nipples should
be used between copper system piping and boiler
to make final connection to boiler. Also, the use of
dielectric unions is acceptable. The packaged boiler
is furnished with iron piping in the front boiler sec-
tion for the supply and return connections.
When the installation of the boiler is for a new heat-
ing system, first install all of the radiation units (pan-
els, radiators, baseboard, or tubing) and the supply
and return mains. After all heating system piping and
components have been installed, make final con-
nection of the system piping to the boiler.
Ahot water boiler installed above radiation level must
be equipped with a low water cut off device (included
with boiler). A periodic inspection is necessary, as is
flushing of float type devices, per low water cut off
manufacturers specific instructions.
DIAPHRAGM TYPE EXPANSION TANK PIPING
E_C_ T_f_ _VICE VAL_
--(_,_n[ VALOIS C_ FULL
PORT B_ VAL'_
_J TO_ATIC _R
V_. _/'_"X'/8"_ F_t_i_O_J_'_i_°iN
.... ?ST _°_1_4 FC_ F_ WA_R
Figure 6 ]
Determine required system fill pressure, system de-
sign temperature, and system water content. Boiler
contains 2.6 gallons (U.S.). Size expansion tank ac-
cordingly. Consult expansion tank manufacturer for
proper sizing information. Connect properly sized
expansion tank (not furnished) as shown in Figure 6
for diaphragm type expansion tank. For diaphragm
type expansion tanks, adjust the tank air pressure
to match the system fill pressure. Install air vent
(fumished) as shown for diaphragm type expansion
tank system only. install make-up water connec-
tions as shown and per local codes. If a pressure
reducing valve is used, adjust to match the system
fill pressure. In connecting the cold make-up water
supply to the boiler, make sure that clean water sup-
ply is available. When the water supply is from a well
or pump, a sand strainer should be installed at the
pump.
RELIEF VALVE DISCHARGE PIPING
fPRESSUR[ REUEF 0EVlC[
[FigureTI
The boiler is furnished with a relief valve and tem-
perature pressure gauge in the boiler parts bag. In-
stall vent retief valve as shown in Figure 7. Provide
¾" piping from the relief valve to a local floor drain,