Laars Mini-Therm JVH Owner's manual

Installation and Operation Instructions Document 1254D
Installation and
Operation Instructions for
MINI-THERM
Residential
Gas-Fired
Hydronic Boilers
Models JVH, JVS
These instructions are to be stored next to the boiler for reference purposes.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in ue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty.
WARNING
If the information in this manual is not followed
exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
Do not store or use gasoline or other ammable
vapors and liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the
re department.
Installation and service must be performed by
a qualied installer, service agency, or gas
supplier.
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d’incendie ou d’explosion
ou pour éviter tout dommage matériel, toute
blessure ou la mort.
Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inammables dans
le voisinage de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareils.
• Ne touchez à aucun interrupteur. Ne pas
vous servir des téléphones dansle bâtiment
où vous êtes.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions
du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur
de gaz, appelez le sservice des incendies.
L’installation et l’entretien doivent être assurés
par un installateur ou un service d’entretien
qualié ou par le fournisseur de gaz.
Vent damper is optional in some provinces of Canada..
Sizes 50-225
U.S. Patent No. 1,609,692
Canada Patent No. 383,318
JVH
JVS
H2355800D

LAARS Heating Systems
Page 38
Mini-Therm JVi Page 31
ITEMS 14, 39
AND INSULATION
NOT SHOWN
(left side)
(right side)
Figure 19A. JVH Parts Identication.
25
26
22
25
16
15 27
35
33
38
32
32
17
14
19
20
34
3
28
1
2
6
5
9
23
24
37
36
29
10
31
18A
18B
4
11
7
30
12
21
13 8

MINI-THERM JV Page 39
10C Parts List JVS
MINI-THERM JV Page 39
Mini-Therm JVS Size
Description JVS-50 JVS-75 JVS-100 JVS-125 JVS-160 JVS-225
Gas System
1 Pilots
Pilot Assembly (Nat.) R0061600 R0061600 R0061600 R0061600 R0061600 R0061600
Pilot Assembly (LP) W0039600 W0039600 W0039600 W0039600 W0039600 W0039600
2 Main Gas Valves
Gas Valve, Natural R0385100 R0385100 R0407700 R0407700 R0407700 R0407700
Gas Valve, LP V0077500 V0077500 V0079100 V0079100 V0079100 V0079100
3 Gas Manifold L0052601 L0052602 L0052603 L0052604 L0052603 L0052604
3 Burner, Main L0052500 L0052500 L0052500 L0052500 L0052500 L0052500
4 Burner W/Pilot Bracket L0056500 L0056500 L0056500 L0056500 L0056500 L0056500
Burner/Air Shutter (LP) (not shown) L0055900 L0055900 L0055900 L0055900 L0055900 L0055900
Gas Orifices (not shown)
Gas Orifice (Nat.) L0032200 L0032200 L0032200 L0032200 L0032200 L0032200
Gas Orifice (LP) L0032900 L0032900 L0032900 L0032900 L0032900 L0032900
Electrical System
5 Controller RE2344300 RE2344300 RE2344300 RE2344300 RE2344300 RE2344300
6 Transformer 115/24V (40VA) R0021300 R0021300 R0021300 R0021300 R0021300 R0021300
7 Ignition Control E2102800 E2102800 E2102800 E2102800 E2102800 E2102800
8 Limit Switch R0061300 R0061300 R0061300 R0061300 R0061300 R0061300
9 Blocked Vent Safety Switch R2061100 R2061100 R2061100 R2061100 R2061100 R2061100
10 Roll-out Safety Switch E2103200 E2103200 E2103200 E2103200 E2103200 E2103200
Wiring Harness (not shown) E2347700 E2347700 E2347700 E2347700 E2347700 E2347700
Hi-Tension Lead (not shown) 10449514 10449514 10449514 10449514 10449515 10449516
Fuse, 5-Pack, 4-Amp (not shown) RE0084401 RE0084401 RE0084401 RE0084401 RE0084401 RE0084401
Temp Sensor (not shown) E2347600 E2347600 E2347600 E2347600 E2347600 E2347600
Outdoor Sensor (not shown) E2347400 E2347400 E2347400 E2347400 E2347400 E2347400
Water System
11 Heat Exchanger, Rev 2
(after 2012)
12 Pressure Relief Valve, 30PSI R0061400 R0061400 R0061400 R0061400 R0061400 R0061400
13A Well, Immersion, 1/2" NPT E0025902 E0025902 E0025902 E0025902 E0025902 E0025902
13B Well, Immersion, 3/4" NPT E2345700 E2345700 E2345700 E2345700 E2345700 E2345700
14 Drain Valve 1/2" NPT (not shown) 70-216 70-216 70-216 70-216 70-216 70-216
Temp/Pressure Gauge (not shown) R0060600 R0060600 R0060600 R0060600 R0060600 R0060600
Jacket and Fire Box Components
15 Draft Diverter 11020101 11020102 11020103 11020104 11020105 11020106
16 Rear Panel 11020201 11020201 11020203 11020203 11020205 11020206
17 Jacket 11020301 11020301 11020303 11020303 11020305 11020306
18 Top 11020401 11020401 11020403 11020404 11020405 11020406
19 Cover, Piping, Top 11047603 11047604 11047603 11047604 11047604 11047606
20 Flue Collector 20034901 20034902 20034903 20034904 20034905 20034906
21 Access Panel HX, (L&R) 10535900 10535900 10535900 10535900 10535900 10535900
22 Base, Control Box 20608500 20608500 11045700 11045700 11045700 11045700
23 Cover, Control Box 11045901 11045901 11045800 11045800 11045800 11045800
24 Burner Cover 10500601 10500601 10500602 10500602 10494105 10494106
25 Heat Exchanger Baffle 10485301 10485308 10485309 10485311 10485310 10485306
26 Tile Cover 10469501 10469502 10469503 10469504 10469505 10469506
27 Refractory, Front T0022001 T0022002 T0022003 T0022004 T0022605 T0022606
28 Refractory, Rear T0021701 T0021702 T0021703 T0021704 T0021705 T0021706
29 Base Assembly 10467101 10467102 10467103 10467104 10467105 10467106
Non-Combustible Base Kit (optional) 10466701 10466701 10466702 10466702 10466703 10466704
Vent Damper Components
Vent Damper Assembly (not shown) E2071501 E2071502 E2071502 E2071503 E2071503 E2071504
Vent Damper Harness (not shown) E0099100 E0099100 E0099100 E0099101 E0099101 E0099101
10C Parts List JVS
R11061001 R11061002 R11061007 R11061008 R11061009 R11061010
11 Heat Exchanger, Rev 1 R0402001 R0402002 R0402003 R0402004 R0402005 R0402006