LAARS Mini-Therm JVS (Sizes 50-225) - Install and Operating Manual - Manual (Page 4)

LAARS Heating Systems Page 4
JVS
1
st and
2
nd
C
haraCters
(s
eries
n
ame
)
JV = m
ini
-t
herm
3
rd
C
haraCter
(i
gnition
s
ystem
)
s = s
park
i
gnition
4
th thru
6
th
C
haraCters
(s
ize
)
i
nput
mBtu / h
7
th
C
haraCter
(
fuel
)
n = n
atural
g
as
p = p
ropane
g
as
8
th
C
haraCter
(f
iring
s
ystem
)
D =
on
/
off
9
th
C
haraCter
(C
onstruCtion
o
ption
)
i = (s
tandard
)
J = p
ump
(050-125
only
)
10
th
C
haraCter
(a
ltitude in
f
eet
)
s = (0 - 2,000) n
atural or
(0 - 5,000) p
ropane
i = (5,001 - 8,000) n
atural and
p
ropane
J = (8,001 - 10,000 n
atural and
p
ropane
11
th
C
haraCter
(C
ountry
)
u = usa & C
anada
12
th
C
haraCter
(r
eVision
)
2 = s
eCond
r
eVision
JVH
1
st and
2
nd
C
haraCters
(s
eries
n
ame
)
JV = m
ini
-t
herm
3
rd
C
haraCter
(i
gnition
s
ystem
)
h = h
ot
s
urfaCe
p
ilot
4
th thru
6
th
C
haraCters
(s
ize
)
i
nput
mBtu / h
7
th
C
haraCter
(
fuel
)
n = n
atural
g
as
p = p
ropane
g
as
8
th
C
haraCter
(f
iring
s
ystem
)
C = o
n
/ o
ff
9
th
C
haraCter
(C
onstruCtion
o
ption
)
s = s
tandard
10
th
C
haraCter
(a
ltitude in
f
eet
)
s = (0 - 2,000) n
atural or
(0 - 5,000) p
ropane
i = (5,001 - 8,000) n
atural and
p
ropane
J = (8,001 - 10,000 n
atural and
p
ropane
11
th
C
haraCter
(C
ountry
)
u = usa & C
anada
12
th
C
haraCter
(r
eVision
)
2 = s
eCond
r
eVision
1C. Heater Identification
Consult the rating plate on the boiler. The following
example simplifies the heater identification:
MODEL
J V
IGNIT
SYST
S
H
SIZE
0 5 0
0 7 5
1 0 0
1 2 5
1 6 0
2 2 5
FUEL
N
P
FIRING
SYST
C
D
CONST
OPTION
S
P
I
J
ALTITUDE
S
I
J
REVISION
2
COUNTRY
U
V J U 2
1 2 3 4 5 6 7 8 9 10 11 12
Table 1. Boiler Model Identification.
SECTION 2.
Boiler Assembly and Placement
2A. Field Assembly
These boilers are available in two configurations; the
JVH has a hot surface ignition pilot and integral draft
fan, and the JVS has an electronic intermittent ignition
device (I.I.D.). Look for the model designation on the
rating plate, which can be found on top of the boiler in
the right rear corner.
The Laars automatic vent dampers are standard on
all JVS models. The Laars side wall power venters
can be used on JVS models. Special instructions for
their installation are included in the vent damper and
power venter package. Read them carefully before
installation.