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LAARS Heating Systems

Page 26

1.

Lubricate the water circulating pump per the
instructions on the pump.

2.

If a strainer is employed in a pressure reducing
valve or the piping, clean it every six months.

3.

At start-up, and periodically thereafter, the
burner flame should be observed. If the flame
has the appearance of ‘sooting’ tips, check for
debris near the orifices and call the service
technician.

4.

Inspect the venting system for obstruction,
leakage or corrosion at least once a year.

5.

Do not store or use gasoline or other flammable
vapors, liquids or chemicals in the vicinity of
this or any other appliance.
Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre
appareil.

6.

Do not use this boiler if any part has been under
water. Immediately call a qualified service
technician to inspect the heater and replace any
part of the control system and any gas control
which has been under water.
N’utilisez pas cet appareil s’il a été plongé dans
l’eau, même partiellement. Faites inspecter
l’appareil par un technicien qualifié et remplac
ez toute partie du système de contrôle et toute
commande qui ont été plongés dans l’eau.

7.

Be sure that all combustion air and ventilation
openings are unobstructed.

8.

Upon completion of the installation, inspect the
external surfaces of the heat exchanger for
fouling based on the following schedule:
24 hours 7 days 30 days 90 days
Once every six months thereafter.

9.

If the boiler is not going to be used for long
periods of time in locations where freezing
occurs, it should be completely drained of all
water. To accomplish this, there is a drain valve
on the right side of the boiler which can be
opened. This will drain the right side of the
boiler. There are two plugs located on the left
side of the heater which must be removed to
drain that side. Both sides must be drained.

10.

The gas and electric controls on the boiler are
engineered for long life and dependable
operation, but the safety of the equipment
depends on their proper functioning. It is

strongly recommended that the basic items listed
below be inspected by a qualified service
technician every year.
a.

Water temperature controls

b.

Pilot safety system.

c.

Automatic gas valves.

d.

Flow sensing safety devices.

e.

Vent dampers and power venters.

f.

Venting system.

NOTE:

 The Warranty does not cover damage caused

by lack of required maintenance, lack of water flow, or
improper operating practices.

12.

Fouling on the external surfaces of the heat
exchanger is caused by incomplete combustion,
and is a sign of venting and/or combustion air
problems. The heat exchanger can be inspected
by using a flashlight and placing a mirror under
the burners. An alternate method is to remove the
venting and top panel to inspect the exchanger
from above. The vent system should be inspected
at the same time. If cleaning is required:
a.

Shut off all power to the boiler.

b.

Remove the draft hood, venting top, flue
collector, and heat exchanger baffles.

c.

Remove the burners by lifting them off the
orifices and pulling them out of the boiler.

d.

Use a hand-operated spray bottle filled with
water, and a wire brush to clean soot and
loose scale from the underside of the heat
exchanger. DO NOT USE COMPRESSED
AIR, HIGH PRESSURE WATER OR A
GARDEN HOSE.

e.

Clean any fallen debris from the bottom of
the unit.

f.

Check to make sure the burner ports and
pilot assembly are free of debris before
returning the burners to their original
position.

g.

Reassemble the boiler in reverse order,
making sure to replace the heat exchanger
baffles.

8.2 Boiler Components and Their

 Operation

1.

Gas Valve / Regulator - 

The gas valve controls

gas flow into the manifold. It provides flow only
when the temperature control requires heat and
only if all safety controls enable operation. It is
also a positive pressure regulator. It regulates the
gas pressure in the manifold to specifications
addressed earlier in this manual. This is
necessary for proper operation of the burner
system. JVS 100-225 Only - Gas Valve /
Regulator has two output stages controlled by
two-stage temperature control.

Figure 14.

1) JVS Pilot; 2) JVH Pilot;
3) Main Burner Flame Pattern; 4) JVT Pilot.

Содержание JVS

Страница 1: ...ed by a qualified installer service agency or gas supplier AVERTISSEMENT Assurez vous de bien suivres les instructions donn es dans cette notice pour r duire au minimum le risque d incendie ou d explo...

Страница 2: ...s Piping 12 5 2 Alternate Auto Bypass Operation 12 5 3 Flow Requirements 15 5 4 Chilled Water Systems 16 5 5 Oxygen Permeable Systems 16 5 6 Anti Freeze 16 SECTION 6 Electrical 6 1 General Information...

Страница 3: ...and Standards The JV Hydronic Boiler or Mini Therm II is design certified by CSA Canadian Standards Association as complying with the latest edition of the Standard for Gas Fired Low Pressure Steam a...

Страница 4: ...Diameter 225 7 Diameter 11 Electrical Supply 115 Volts AC 12 Modification of Boiler for High Altitude Mini Therm II Boilers are normally shipped from the factory in the low altitude sea level operati...

Страница 5: ...rovide at least six inches clearance between the automatic vent damper and combustible construction and be sure to allow access for servicing the damper 6 Install the temperature pressure gauge provid...

Страница 6: ...ater by at least 12 inches 305mm in all directions The masonry must be laid with ends unsealed and joints matched to provide free circulation of air from side to side through the masonry see Figure 4...

Страница 7: ...afe boiler operation AVERTISSEMENT N entrepposer aucun produit chimique produit nettoyant ou produit corrosif proximit des bouches d air de combustion ou dans la pi ce viter de placer des tuyaux de ve...

Страница 8: ...ing system This can create a health hazard by spilling flue products into the boiler room Use engineered venting tables acceptable to the authority having jurisdiction to size the venting pipe or line...

Страница 9: ...instrumentation of this boiler replaces an older boiler in a common vent system with other appliances or if you remove additional appliances from the common vent all the appliances must be checked fo...

Страница 10: ...the figures in Table 4 to size the gas inlet piping from the gas meter to the heater Check all local codes for compliance before installing the heater flame of a match or candle or smoke from a cigar...

Страница 11: ...ahead of the gas controls see Figure 5 Fit the trap with a threaded cap which can be removed for cleaning 5 Install a manual gas shutoff valve for service and safety Do not use a restrictive gas cock...

Страница 12: ...40 F see Figure 6 Contact the factory for more information SECTION 5 Water Connections 5 1 Water Piping Figure 6 shows typical plumbing installations Be sure to provide unions and isolation valves at...

Страница 13: ...ary Piping with Field Balancing for Fixed Low Return Temperatures JV Pump Isolation Valve Isolation Valve Balancing Valve Balancing Valve Pump From System To System Tempering Valve with System Loop an...

Страница 14: ...R Air Scoop JV Boiler Bypass Valve Ball Valve Zone Pump Purge System Optional Pump Location Feed Water Inlet Air Cushion Type Expansion Tank Optional Feed Water Inlet System Loop Expansion Tank Pump A...

Страница 15: ...is manual Figure 7 By pass Piping Balancing Valve or optional thermostatic union Laars P N 2400 030 Primary Secondary only To System From System In Return Out Supply Drip Leg Left Side View A full siz...

Страница 16: ...iquetez tous les fils avant de les d brancher Des erreurs de c blage peuvent entra ner un fonctionnement inad quat et dangereux 6 1 General Information Wiring connections must be made exactly as shown...

Страница 17: ...GR 24V TH W MV SPARK 1 2 3 4 5 6 7 8 9 REMOTE FLAME SENSOR HIGH ALTITUDE OPTIONAL Figure 9a Wiring Diagram Spark Ignition System JVS 50 75 Switch Safety Roll Out Blocked Vent Safety Switch Space Heat...

Страница 18: ...LAARS Heating Systems Page 18 Figure 9c Wiring Diagram Standing Pilot System JVT Figure 9d Schematic Standing Pilot System JVT...

Страница 19: ...WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH APPLIANCE WIRING MATERIAL SUITABLE FOR 105 DEGREES C OR ITS EQUIVALENT 1 2 3 4 5 6 THE BOILER WILL NOT OPERATE WITHOUT THE AUTOMATIC VENT...

Страница 20: ...primary secondary pumping Connect to W in lieu of A Boiler relay is used for boiler pump and connection to W will energize boiler pump when any zone is calling for heat Wiring with Taco Zone Valves W...

Страница 21: ...6 4 2 Heat Anticipator For single zone installations the wall thermostat heat anticipator should be set at 0 5 amperes For multi zone installations have a qualified electrical technician make the nece...

Страница 22: ...on tanks require visual inspection of liquid level If necessary inspect the liquid level in the expansion tank With the system full of water and under normal operating pressure to ensure proper water...

Страница 23: ...Read and follow all safety instructions first A more detailed set of lighting and shutdown instructions are listed on the label located on the boiler NOTE If your boiler is configured to operate on LP...

Страница 24: ...your building a 3 Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions a 4 If you cannot reach your gas supplier call the fire department All Models 4 Shu...

Страница 25: ...xide in flue gases which could result in severe injury or death AVERTISSEMENT Une installation ou un entretien inad quat peut causer la naus e ou l asphyxie en raison du monoxyde de carbone pr sent da...

Страница 26: ...the safety of the equipment depends on their proper functioning It is strongly recommended that the basic items listed below be inspected by a qualified service technician every year a Water temperat...

Страница 27: ...ated in the draft diverter opening on the rear of the boiler 7 Rollout Switch JVS and JVT boilers are equipped with a manual reset rollout switch designed to shut the boiler down in the event a flame...

Страница 28: ...oisy A Air in volute A Bleed air from volute Check pump alignment B Worn coupling or bearings B Replace worn parts 8 Boiler pounding A Too low water flow through boiler A Check temperature rise betwee...

Страница 29: ...wire Clean flame rod Check electrical connections between flame rod and module Check for cracked ceramic flame rod insulator Check that pilot flame covers flame rod and is steady and blue Adjust pilo...

Страница 30: ...hermocouple may be defective 11 There are two tests necessary to make sure the problem is not in the pilot thermocouple The first test can be performed by unscrewing the compression fitting on the gas...

Страница 31: ...section of piping which connects the boiler return and supply with the branch es Also known as a main or header Should be same size as boiler inlet outlet connections Vent Damper optional in Canada S...

Страница 32: ...2900 L0032900 L0032900 L0032900 L0032900 L0032900 L0032900 L0032900 L0032900 Gas Manifold L0052601 L0052601 L0052602 L0052602 L0052603 L0052603 L0052604 L0052604 L0052605 L0052605 L0052606 L0052606 El...

Страница 33: ...4 20034905 20034905 20034906 20034906 Access Panel HX L R 10535900 10535900 10535900 10535900 10535900 10535900 10535900 10535900 10535900 10535900 10535900 10535900 Base Control Box 20086800 20086800...

Страница 34: ...4 Hold 1 7 8 Hold Aquastat Bulb Cover Control Box Temperature Pressure Gauge Jacket One Piece Wraparound A B C A Inlet Pipe B 4 1 2 x3 4 Pipe C Outlet Pipe Gas Valve Flame Roll Out Safety Switch Burn...

Страница 35: ...Mini Therm II Hydronic Boiler Page 35...

Страница 36: ...x 800 559 1583 Customer Service Service Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 ww...

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