Install and Operating Manual Instruction Manual

LAARS Heating Systems
Page 4
JVS
1st and 2nd CharaCters (series name)
JV = mini-therm
3rd CharaCter (ignition system)
s = spark ignition
4th thru 6th CharaCters (size)
input mBtu / h
7th CharaCter (fuel)
n = natural gas
p = propane gas
8th CharaCter (firing system)
D = on / off
9th CharaCter (ConstruCtion option)
i = (standard)
J = pump (050-125 only)
10th CharaCter (altitude in feet)
s = (0 - 2,000) natural or (0 - 5,000) propane
i = (5,001 - 8,000) natural and propane
J = (8,001 - 10,000 natural and propane
11th CharaCter (Country)
u = usa & Canada
12th CharaCter (reVision)
2 = seCond reVision
JVH
1st and 2nd CharaCters (series name)
JV = mini-therm
3rd CharaCter (ignition system)
h = hot surfaCe pilot
4th thru 6th CharaCters (size)
input mBtu / h
7th CharaCter (fuel)
n = natural gas
p = propane gas
8th CharaCter (firing system)
C = on / off
9th CharaCter (ConstruCtion option)
s = standard
10th CharaCter (altitude in feet)
s = (0 - 2,000) natural or (0 - 5,000) propane
i = (5,001 - 8,000) natural and propane
J = (8,001 - 10,000 natural and propane
11th CharaCter (Country)
u = usa & Canada
12th CharaCter (reVision)
2 = seCond reVision
1C. Heater Identication
Consult the rating plate on the boiler. The following
example simplies the heater identication:
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
VJ U 2
1 2 3 4 5 6 7 8 9 10 11 12
Table 1. Boiler Model Identication.
SECTION 2.
Boiler Assembly and Placement
2A. Field Assembly
These boilers are available in two congurations; 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.