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Mini-Therm JVi Venting Material 10-27 December 14, 2010

To: Manufacturer’s Representatives, Distributors, Contract Service Centers, Regional Sales Managers

and Internal Departments

From: Tom Gervais, International Sales Director

There has been an instance of confusion regarding suitable venting material for use on the Mini-Therm JVi

product with

in Canada. Therefore, the table used in section “1H-2: Horizontal Venting – Category III” of the

Mini-Them manual has been updated to more clearly indicate what is an allowable vent material.

In Canada: Use "BH-Type" vent materials certified to ULC-S636 Class I (more than 135°C, but not more

than 245°C flue gas temperature), made of AL29-4C stainless steel or equal.

'RQRWXVHSODVWLFYHQWLQJRIDQ\NLQG

800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)

20 INDUSTRIAL WAY, ROCHESTER, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Technical Support)

1869 SISMET ROAD, MISSISSAUGA, ONTARIO, CANADA L4W 1W8 • 905.238.0100 • Fax 905.366.0130

Addendum to Mini-Therm JVi Manual

This Addendum applies to the following Documents:

Models Affected Sizes Part No. Doc. No.

Mini-Therm JVi, JVH 50-225 H2020900D Doc. 1080D

Page 8 Change to Column 2 Table:

1H-2. Horizontal Venting - Category III

(a) Vent Connections

Materials Vent Length

In U.S.A.: UL type 304, 316 or 294-C Up to a maximum

stainless steel, 26 gauge minimum. of 55' (17m) of

In Canada: Use "BH-Type" vent equivalent pipe

materials certified to ULC-S636 run (including

Class I (more than 135°C, but not required elbows).

more than 245°C flue gas

temperature), made of AL29-4C

stainless steel or equal.

Do not use plastic venting of any kind.

Summary of content (25 pages)

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Mini-Therm JVi Venting Material To: 10-27 December 14, 2010 Manufacturer’s Representatives, Distributors, Contract Service Centers, Regional Sales Managers and Internal Departments From: Tom Gervais, International Sales Director There has been an instance of confusion regarding suitable venting material for use on the Mini-Therm JVi product within Canada.
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Installation and Operation Instructions Document 1080D Installation and Operation Instructions for Mini-Therm JVi Induced Draft Residential Gas-Fired Hydronic Boilers Model JVH 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, qualified in hydronic boiler installation and maintenance.
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LAARS Heating Systems Page 2 TABLE OF CONTENTS SECTION 1. General Information SECTION 2. Operating Procedures 1A. 1B. 1C. 1D. 1E. 1F. 1G. 1H. 1H-1. 1H-2. 1H-3. 1I. 1I-1. 1J. 1K. 1L. 2A. 2B. Introduction ................................................... 3 Warranty ....................................................... 3 Heater Identification ...................................... 3 Flow Requirements ....................................... 3 Boiler Placement ..........................................
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Mini-Therm JVi Page 3 is printed on the back cover of this manual. The owner should fill out the warranty registration card and return it to Laars. All warranty claims must be made to an authorized Laars representative or directly to the factory. Claims must include the boiler serial number and model (this information can be found on the rating plate), installation date and name of the installer. Shipping costs are not included in the warranty coverage.
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LAARS Heating Systems Page 4 Damage from improper flow is not warranted. Failure to insure proper water flow through the heat exchanger of the boiler will void the Laars warranty. Flow can be verified by measuring the difference in water temperatures between the boiler inlet (system return) and outlet (system supply). For example: For a JV-100 installation, the inlet water temperature is 160°F (71ºC), and the outlet temperature is 180°F (82ºC).
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Mini-Therm JVi 2. 3. 4. 5. Page 5 are normally equipped to operate below a 2000' (610m) altitude. Boilers equipped to operate at higher altitudes have appropriate stickers or tags attached next to the rating plate. Use the figures in Table 5 to provide adequate gas piping from the gas meter to the boiler. A trap (drip leg) must be provided ahead of the gas controls (see Figure 3). A manual gas shutoff valve approximately 5' (1.
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LAARS Heating Systems Page 6 U.S. ANSI standard Z223.1 or in Canada, CAN/CGAB149.1 or .2, and any local codes that may be applicable. In general, these requirements specify that the boiler rooms which represent confined spaces should be provided with two permanent air supply openings; one within 12 inches (305mm) of the ceiling, the other within 12 inches (305mm) of the floor.
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Mini-Therm JVi Page 7 Do not weld the vent pipe to the boiler collar. The weight of the stack must not rest on the boiler. The boiler top must be easily removable for normal boiler service and inspection. Avoid terminating boiler vents near air conditioning or air supply fans. The fans can pick up exhaust flue products from the boiler and return them to the building, creating a possible health hazard.
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LAARS Heating Systems Page 8 10 (3.0) OR LESS MORE THAN 10 (3.0) 2 (0.6) MIN. WALL OR PARAPET CHIMNEY 10 (3.0) OR LESS RIDGE 3 (0.9) MIN. 3 (0.9) MIN. TERMINATION 10 FT. (3.0m) OR LESS FROM RIDGE, WALL OR PARAPET 2 (0.6) MIN. 3 (0.9) MIN. WALL OR PARAPET NOTE: NO HEIGHT ABOVE PARAPET REQUIRED WHEN FROM WALLS OR PARAPET IS MORE THAN 10 FT. (3.0m) CHIMNEY MORE THAN 10 (3.0) 10 (3.0) RIDGE 2 (0.6) MIN. Dimensions in feet (m). CHIMNEY 3 (0.9) MIN. CHIMNEY Figure 6. Vertical Vent Termination.
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Mini-Therm JVi 3. 4. Page 9 Pitch down the vent run, toward the vent terminal (hood), 1/4" per foot (20mm per meter). Do not locate any joint screws at the bottom of the vent run. Locate the vent terminal so that it cannot be blocked by snow. Most codes requires termination of at least 12" (305mm) above grade, but the installer may determine it should be higher depending on local conditions.
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Page 10 speed. Do not operate a summer exhaust fan. Close fireplace dampers. 4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously. 5. Test for spillage at the burner opening after five minutes of main burner operation. 6.
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Mini-Therm JVi Page 11 Single Circuit System Multi-Zone Valve System Multi-Zone Pump System Primary Secondary Multi-Zone Pump System Primary/Secondary Multi-Zone Valve System Low Temperature Installation Primary/Secondary Multi-Zone Valve System KEY: PUMP CHECK VALVE Figure 9. Typical Plumbing Installations.
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Page 12 1K. Electrical Wiring Follow these instructions to make the necessary initial electrical connections. 1. Remove the two screws attaching the front cover of the control box. 2. There are five wires coiled in the area on the right side of the control box, supplied with wire nuts: two black wires twisted together, two white wires, and a separate brown wire. 3. Follow the schematic in Figure 10.
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Mini-Therm JVi Page 13 Figure 10. Wiring Diagram, JVH. 2A. System Start-up 12. Close the water makeup valve and check the strainer in the pressure reducing valve for sediment or debris. Reopen the water makeup valve. 13. Verify system pressure with the boiler pressure gauge before beginning regular operation. 14. Within 3 days of start-up, recheck and bleed all air vents and the expansion tank using these instructions. 1. 2. SECTION 2.
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Page 14 LAARS Heating Systems Wiring with Taco Zone Valves Wiring with Honeywell Zone Valves Wiring with Multiple Zone Pumps For 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. Figure 11. Multiple Zone Wiring.
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Mini-Therm JVi Page 15 2B. Sequence of Operation 1. 2. 3. 4. 5. 6. 7. Wall thermostat will call for heat. Pump relay will turn on the circulating pump. If water temperature is below the limit setting, the inducer motor relay will turn on the draft inducer. Pressure switch will sense the fan (inducer) operation and send 24 volts to the flame rollout switch. In normal conditions, the flame rollout switch will be in a closed position.
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LAARS Heating Systems Page 16 FOR YOUR SAFETY, READ BEFORE OPERATING WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. A. This boiler is equipped with an ignition device that automatically lights the pilot. Follow operating instructions, do not try to light the pilot by hand. B. BEFORE OPERATING, smell all around the boiler area for gas.
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Mini-Therm JVi SECTION 3. 3A. Maintenance 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 and pilot flames should be observed. If the flame has the appearance of “sooting” tips, check for debris near the orifices and call the service technician. 4.
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LAARS Heating Systems Page 18 switch, check for defective hi-limit, open circuit due to excessive water temperature, or a low temperature setting. 3B. Electrical Troubleshooting 1. Remove the control box cover on the front of the boiler. 2. Verify that 115 volts is reaching the boiler by testing across the black wire and the white wire on the transformer. 3. Verify 24 volts transformer output by placing the meter leads on the yellow and red wires. If 24 volts is not evident, replace the transformer.
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Mini-Therm JVi Page 19 # Symptom Cause Remedy 1. Pump not operating No power . . . . . Pump defective . . . . . Incorrectly wired . . . . . Check circuit breakers and power source. Replace. Recheck wiring diagrams. 2. Pilot outage Inlet gas pressure too low . . . . . Consult gas utility company. Inlet gas pressure to boiler should be 5.5" (1.4 kPa) to 9.0" (2.2 kPa) water column on natural gas. 10.0" (2.5k Pa) to 14.0" (3.4 kPa) on propane gas.
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LAARS Heating Systems Page 20 Troubleshooting Honeywell SV9501/SV9601 Hot Surface Pilot System START • TURN GAS SUPPLY OFF • SET THERMOSTAT TO CALL FOR HEAT SV9501/SV9601 IS POWERED (24 VAC NOMINAL) NO CHECK: • LINE VOLTAGE POWER • LOW VOLTAGE TRANSFORMER • LIMIT CONTROLLER • THERMOSTAT • WIRING • FAN PROVING SWITCH ON COMBUSTION AIR BLOWER YES NO IGNITER WARMS UP AND GLOWS RED PILOT VALVE OPENS UNPLUG IGNITER MEASURE VOLTAGE AT TWO BOTTOM TERMINAL OF SV9501/SV9601 (24 VAC NOMINAL) NO REPLACE SV95
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Mini-Therm JVi Page 21 Glossary of Terms Air Vent A device used to purge air from the Circuit. Should be located at the highest point in the Circuit. Branch The section(s) of supply and return piping, including the heat distribution units connected directly to the trunk. Also referred to as a “zone”. By-Pass A section of pipe (including an adjustable valve) that diverts part of the water flow from undersized piping to the boiler. Adjusted to maintain minimum flow requirement (GPM) through the boiler.
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LAARS Heating Systems Page 22 Part Number Description Model, Size Pilot Gas System Pilot Assembly (Nat.), Hot Surface Pilot Assembly (LP), Hot Surface 2. Burner with Pilot Bracket 3. Main Burner 4. Main Gas Valves Valve, Hot Surface, (Nat.) SV9501H 3415 Valve, Hot Surface, (LP) SV9501H 3423 5. Gas Orifices (0-2000 FT.) Nat., Orifices (2001-5000 FT.) Nat., Orifices (5001-8000 FT.) Nat., Orifices (8001-10,000 FT.) Nat., Orifices (0-5000 FT.) LP, Orifices (5001-8000 FT.) LP, Orifices (8001-10,000 FT.
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Mini-Therm JVi Page 23 Part Number Description JVH-125 JVH-160 JVH-225 W2001800 W2001900 L0056500 L0052500 W2001800 W2001900 L0056500 L0052500 W2001800 W2001900 L0056500 L0052500 V2001800 — V2002300 V2001800 — V2002300 V2001900 V2002300 L0032200 L0050700 L0032600 L0050300 L0032900 L0032800 L0032700 L0052604 L0050700 L0032600 L0050300 L0050300 L0032900 L0032800 L0032800 L0052605 L0050700 L0032600 L0050300 L0050300 L0032900 L0032800 L0032800 L0052605 Electrical System 7. Relay, DPNO 8.
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Flue Collector Insulation 33 28 38 Rear Top Insulation 9 44 10 43 18 27 1-1/4 Tee 19 17 Rear Panel Insulation 25 24 Side Panel Insulation 29 31 32 39 40 20 42 23 35 16 8 22 1/2" Close Nipple 7 7 21 41 1/2" Coupling (size 50 & 100) Front Panel Insulation 3 4 12 26 36 1 34 37 2 *Items 13, 14, 15 and 30 are not shown 6 11 5 Laars Heating Systems Company reserves the right to change specifications, components, features, or to discontinue products without notice.