Primary Air Adjustment; Controls; Adjust Air Flow; Adjust Thermostat - Sears 867.76391 Owner's Manual

check-adjust (cont.)
IXAMPLE
PEGT" und it look 54 _cmds fur one revolutlem.
In the "Input _" €olumn o# the ruble ep_site "$4 #
It_ the "_e." column you find the figure "67".
As yovr$ Is u _O [girt die|. you muit|ply this
fisvre by 2 -- to urrlvu st "1_4." Yc_r _s €_n-
piny bus hdd yov fll_ the STU r_llw of your
ires is 1000. Multiplying 134 x 1,900 plvw y_
134,0GO--the actual BTU/HIt ir_lut to your
he4tln9
unit. Your vnlt is rM_l for 1_;,40Q
BTU/HR input, aqd 134000 IS ngt more th_
135,000_sO the "e_tvel" input tQ your ul_lt is
within the _Dquirsd llmltL
If the burner orifices hnmished u-i_h your unit do
not give the proper input, check wi_ your local Gas
•Company for the proper orifice size,
PItIMARY AIR ADJUSTMEI'_
Air shuLter$ are no_ norm_ly supplied _ the burn-
era are d_gned to in.'_pirate correct amoun_ of pr_-
mary oh" on either natural or LP gas.
CONTROLS
Limit controls are preset at factory and should not
be a6justed_
ADJUST AIR FLOW
The _rnace is equipped with a direet_drive blow-
er with multi-speed motor. If air lqow adjust_eDt
is necessary,
it Ls aeeompIif,_ed
_- changing motor
speed- The u_$ is factory wired to give lowest
blower speed on the heating cycle and it will not
often be necessary to change this heating speed.
If. however, it i_ desired (o decre_se the outle! oir
temperature from the hn'noee, (increase blower
speed) it is accomplished In the foll_ mann_-:
I, Shut off power to _t_
2. Remove cover from junction box on blower
housing.
3. Remove yellow _t_re (lead from I'_ati_ cycle
fan control) from Lo-Speed terminal a_d push onto
desired higher speed te_ninaL
NOTE: The white ,v|re is _.he common lead a_l is
not _o be moved when ch_i_g blower speed,
The violet wire is not factory _ but is
tape_ off in the blower junction box, Un_ape and
connect to _rminal indicated in table _
P_e 14
when adding summ_ air-€onditiordn_,
4. Reverse steps I and 2 a_ve.
Adjustment should be made to run _be blower
to deliver the lowest pra€ticable sir flow. This
is de,re'hie bemuse, first, it me_u_ less current
consumption, a_ second, l_ noticeable draft at
the warm eir o_tlet_. The blower should deliver
the amount of air
rise _ro_tli[h the which w[/l produce a temperature
_mit of between 45 ° to 75 _ for
Models 86_._86 .76398 and 867.763792 and between 70 °
and 1_0 _ tot Mod_ 86_._391,g$'/.77_87, _67.77_gg,
867,773_9, 867.763_,_, 867.76_832, 867.763842, 8G7..
:!_g_tE_ _md. S6_.773860.
).:'9-_ t;!/BO'd rl6-1 kcE98PZSI9+
SETBLOWER CONTROL
.......
The combination Fan-Limit eont:_ is on the
Division Panel below the dre/t diver_ seoop on
the im'na_. ,:
|'
Sot the "F_n Off" Netting on th_ (ontro| to stop
the blower motor at _ low ta leml_flKul_ mtt]n_
as practicable. "'Practicableness" is _mlldned by
the type and locations o_ the w_lk.4dt" ou_dets (&l_d
how warm the air must be :_or t_e outlets to
circulate it _b]y throttgh the roo_n_). Us-
ua!ly, a "Fan Off' setting of 8_o to 00 ° is best tot
high wall or perimeter _ffusi_ type outle_ The
blower should shut off Jt_t _0_
I €O0_ d_'l.tr"t
is felt _,ywhere in the room.
After _ the "F_
Off" _t the 'T_ On" at
Xlq_roxln_tely 20 ° above the '7"_ OJF. The lowest
pracUCa_e 'Tan
Off" set_
comb_-d with the
_?w_t,,practicabie blower _._d,
w_ re_lt in a
gentle practically unnoticable #it _reuleUon
thst win prevent stratification, of r_m sir (warm
sir _ ceilL_ and colder __'r l:,cl_,, iO. A_ long
as the blower runs it win ke_p takt_g coo) sir off
the floor and mixing it with tim _'_mer _r ne_
ADJUST THERMOSTAT
TI_ is the tinal ediustmant _lju_un_t.inm_
ttons s_e pedcaged with the The_mo_ Checkoff
by setting it to turn the tur_*ce on st asverd
:'_
ferant temperature s_ttiz_s (be turn, -- aridm_
co_dn that it closes prop_y wh_m _e tompemtur4
(ir_ the room) drops to the _g. 'Ir]te_later €_
p_perlv when the room te_perxture _ e,_ :
Next edjmt th_ tbermo_t hint s_.'T_
beat ._t_tor is _ _ a v._tle m._e _
am be _thud_d to ei_ dzc_m €: leq_bm ,
bumsr "ON _ _de. For normal _km set "
po_t_ at _0 _ the a_h_l -_b. _ _
b.._er '_)_' €_€les wbi)e sett_ t_, pdnt_
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