03
6
-
2
150
2
-003-
A
-1105
Unit
a
ry Products Group
43
intern
a
lly enh
a
nced copper tubes
w
ith
a
ll joints
br
az
ed.
S
peci
a
l Phenolic co
a
tin
g
sh
a
ll be
a
v
a
il
a
ble
a
s
a
fa
ctory option.
b.
Ev
a
por
a
tor
a
nd Condenser coils sh
a
ll be o
f
the
direct exp
a
nsion, dr
aw
-thru, desi
g
n.
Re
f
ri
g
er
a
nt Circuit
a
nd Re
f
ri
g
er
a
nt
Saf
ety Co
m
ponents sh
a
ll
include:
a
.
Independent
f
ixed-ori
f
ice exp
a
nsion devices.
b.
Filter drier/str
a
iner to eli
m
in
a
te
a
ny
m
oisture or
f
or-
ei
g
n
ma
tter.
c.
A
ccessible service
gag
e connections on both suc-
tion
a
nd li
q
uid lines to ch
a
r
g
e, ev
a
cu
a
te,
a
nd
m
e
a
-
sure re
f
ri
g
er
a
nt pressure durin
g
a
ny necess
a
ry
servicin
g
or troubleshootin
g
w
ithout losin
g
ch
a
r
g
e.
d.
The re
f
ri
g
er
a
tion syste
m
sh
a
ll provide
a
t le
a
st 15°F
o
f
sub-coolin
g
a
t desi
g
n conditions.
UNIT CONTROLS
a
.
Unit sh
a
ll be co
m
plete
w
ith sel
f
-cont
a
ined lo
w
-volt-
ag
e control circuit protected by
a
reset
a
ble circuit
bre
ak
er on the
2
4-volt tr
a
ns
f
or
m
er side.
b.
Unit sh
a
ll incorpor
a
te
a
loc
k
out circuit
w
hich pro-
vides reset c
a
p
a
bility
a
t the sp
a
ce ther
m
ost
a
t or
b
a
se unit, should
a
ny o
f
the
f
ollo
w
in
g
st
a
nd
a
rd
s
af
ety devices trip
a
nd shut o
ff
co
m
pressor.
c.
Loss-o
f
-ch
a
r
g
e/Lo
w
-pressure s
w
itch.
d.
Hi
g
h-pressure s
w
itch.
e.
Free
z
e-protection ther
m
ost
a
t, ev
a
por
a
tor coil.
f
.
I
f
a
ny o
f
the
a
bove s
af
ety devices trip,
a
LED (li
g
ht-
e
m
ittin
g
diode) indic
a
tor sh
a
ll
f
l
a
sh
a
di
ag
nostic
code th
a
t indic
a
tes
w
hich s
af
ety s
w
itch h
a
s tripped.
g
.
Unit sh
a
ll incorpor
a
te
“A
UTO RE
S
ET
”
co
m
pressor
over te
m
per
a
ture, over current protection.
h.
Unit sh
a
ll oper
a
te
w
ith convention
a
l ther
m
ost
a
t
desi
g
ns
a
nd h
a
ve
a
lo
w
volt
ag
e ter
m
in
a
l strip
f
or
e
a
sy hoo
k
-up.
i.
Unit control bo
a
rd sh
a
ll h
a
ve on-bo
a
rd di
ag
nostics
a
nd
fa
ult code displ
a
y.
j.
S
t
a
nd
a
rd controls sh
a
ll include
a
nti-short cycle
a
nd
lo
w
volt
ag
e protection,
a
nd per
m
it coolin
g
oper
a
tion
do
w
n to 0°F.
k
.
Control bo
a
rd sh
a
ll
m
onitor e
a
ch re
f
ri
g
er
a
nt s
af
ety
s
w
itch independently.
l.
Control bo
a
rd sh
a
ll ret
a
in l
a
st 5
fa
ult codes in non
vol
a
tile
m
e
m
ory,
w
hich
w
ill not be lost in the event o
f
a
po
w
er loss.
GAS HEATING SECTION (SINGLE OR 2 STAGE)
S
h
a
ll be desi
g
ned
w
ith induced dr
af
t co
m
bustion
w
ith post
pur
g
e lo
g
ic, ener
g
y s
a
vin
g
direct sp
a
r
k
i
g
nition,
a
nd redun-
d
a
nt
ma
in
ga
s v
a
lve.
V
enter
w
heel sh
a
ll be constructed o
f
st
a
inless steel
f
or corrosion resist
a
nce. The he
a
t exch
a
n
g
er
sh
a
ll be o
f
the tubul
a
r type, constructed o
f
T1-40
a
lu
m
ini
z
ed
steel
f
or corrosion resist
a
nce
a
nd
a
llo
w
in
g
m
ini
m
u
m
m
ixed
a
ir enterin
g
te
m
per
a
ture o
f
2
5°F. Burners sh
a
ll be o
f
the
inshot type, constructed o
f
a
lu
m
inu
m
co
a
ted steel
a
nd con-
t
a
in
a
ir
m
ixture
a
djust
m
ents.
A
ll
ga
s pipin
g
sh
a
ll enter the unit
c
a
binet
a
t
a
sin
g
le loc
a
tion throu
g
h either the side or curb,
w
ithout
a
ny
f
ield
m
odi
f
ic
a
tions. Inte
g
r
a
ted control bo
a
rds
sh
a
ll provide ti
m
ed control o
f
ev
a
por
a
tor
fa
n
f
unctionin
g
a
nd
burner i
g
nition. He
a
tin
g
section sh
a
ll be provided
w
ith the
f
ol-
lo
w
in
g
m
ini
m
u
m
protection:
a
.
Pri
ma
ry
a
nd
a
uxili
a
ry hi
g
h-te
m
per
a
ture li
m
it
s
w
itches.
b.
Induced dr
af
t
m
otor speed sensor.
c.
Fl
am
e roll out s
w
itch (
ma
nu
a
l reset).
d.
Fl
am
e provin
g
controls.
ELECTRIC HEATING SECTION
A
n electric he
a
tin
g
section,
w
ith nic
k
el chro
m
iu
m
ele
m
ents,
sh
a
ll be provided in
a
r
a
n
g
e o
f
5 thru 30 KW, o
ff
erin
g
t
w
o
st
ag
es o
f
c
a
p
a
city - 1
6
KW
a
nd
a
bove on
2
08/
2
30 volt he
a
t-
ers
a
nd
2
0 KW
a
nd
a
bove on 4
6
0
a
nd 5
7
5 volt he
a
ters. The
he
a
tin
g
section sh
a
ll h
a
ve
a
pri
ma
ry li
m
it control(s)
a
nd
a
uto-
ma
tic reset to prevent the he
a
tin
g
ele
m
ent syste
m
f
ro
m
oper-
a
tin
g
a
t
a
n excessive te
m
per
a
ture. The he
a
tin
g
section
a
sse
m
bly sh
a
ll slide out o
f
the unit
f
or e
a
sy
ma
inten
a
nce
a
nd
service. Units
w
ith Electric He
a
tin
g
sh
a
ll be
w
ired
f
or
a
sin
g
le
point po
w
er supply
w
ith br
a
nch circuit
f
usin
g
(
w
here
re
q
uired).
UNIT OPERATING CHARACTERISTICS
a
.
Unit sh
a
ll be c
a
p
a
ble o
f
st
a
rtin
g
a
nd runnin
g
a
t
1
2
5°F outdoor te
m
per
a
ture, exceedin
g
ma
xi
m
u
m
lo
a
d criteri
a
o
f
A
RI
S
t
a
nd
a
rd
2
10/
2
40. The co
m
pres-
sor,
w
ith st
a
nd
a
rd controls, sh
a
ll be c
a
p
a
ble o
f
oper-
a
tion do
w
n to 0°F outdoor te
m
per
a
ture. Unit sh
a
ll be
provided
w
ith
fa
n ti
m
e del
a
y to prevent cold
a
ir
delivery be
f
ore he
a
t exch
a
n
g
er
wa
r
m
s up (G
a
s he
a
t
only).
ELECTRICAL REQUIREMENTS
A
ll unit po
w
er
w
irin
g
sh
a
ll enter unit c
a
binet
a
t
a
sin
g
le
fa
ctory
provided loc
a
tion
a
nd be c
a
p
a
ble o
f
side or botto
m
entry, to
m
ini
m
i
z
e roo
f
penetr
a
tions
a
nd
a
void unit
f
ield
m
odi
f
ic
a
tions.
S
ep
a
r
a
te side
a
nd botto
m
openin
g
s sh
a
ll be provided
f
or the
control
w
irin
g
.
STANDARD LIMITED WARRANTIES
•
Co
m
pressor 5
Y
e
a
rs
•
He
a
t Exch
a
n
g
er 10
Y
e
a
rs
•
Electric He
a
t Ele
m
ent 5
Y
e
a
rs
•
Other P
a
rts 1
Y
e
a
r
