Laars NEOTHERM NTH Installation And Operation Instructions Manual

Text of Laars NEOTHERM NTH User Guide:

• NeoTherm Boiler Page 19 Figure 14. Hydronic Piping — Multiple Boilers with Indirect DWH Tank (zoning with circulators). Temperature Rise in °F 20°F 25°F 30°F 35°F 40°F Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Size gpm feet gpm feet gpm feet gpm feet gpm feet 285 27 25.5 22 17.5 18 14 15 10.5 13 8 399 38 28 31 20 25 14.5 22 11 19 9 500 47 24 38 16 32 12 27 9

• Laars NEOTHERM NTH, LAARS Heating Systems Page 10 The unit’s vent can terminate through the roof, or through an outside wall. Venting should be connected to the CPVC section included with the boiler. The included section of CPVC must be used to make the connection to the boiler. It may be broken by CPVC fittings if necessary, but never reduced in total length. See Table 2 to select the appropriate vent pipe diameter. Vent pipe must pitch upward, toward the vent terminal, so that condensate will run back to the NeoTherm to drain. Route vent pipe to the heater as directly as possible. Seal all joints and provide

• Laars NEOTHERM NTH, LAARS Heating Systems Page 34 CODE# PROBLEM PROBABLE CAUSE SOLUTION COMMON LOCKOUT CODES 27 Internal error Flame rod to ground Check wiring / probe grounded, dirty probe 47 Flame rod to ground leakage Faulty flame detector Clean or replace flame detector 49 24VAC voltage low/high Faulty transformer Check/correct supply line voltage; replace faulty transformer 52 Motor tachometer fault Faulty fan / fan wiring Check fan harness wiring for continuity; replace faulty fan circuit 53 AC inputs phase reversed Reverse 24V hot/neutral - use common ground 61 Anti short cycle Ca

• Laars NEOTHERM NTH, LAARS Heating Systems Page 4 include the 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. Some accessory items may be shipped in separate packages. Verify receipt of all packages listed on the packing slip. Inspect everything for damage immediately upon delivery, and advise the carrier of any shortages or damage. Any such claims should be filed with the carrier. The carrier, not the shipper, is responsible for shortages and damage to the shipment whether visible or concealed. 1.5 Unpacking The NeoTherm is shipped in a single crate with the following

• Laars NEOTHERM NTH, NeoTherm Boiler Page 11 *When vent terminal is less than 10 feet (3m) horizontally from a forced air inlet, the terminal must be at least 3 feet (0.9m) above the air inlet. Figure 9. Combustion Air and Vent Through Side Wall. U.S. Installations (see note 1) Canadian Installations (see note 2) A= Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm) deck, or balcony See note 6 See note 6 B= Clearance to window or door that may be Direct vent only: 12 inches (30cm); 36 inches (91 cm) opened Other than Direct vent: 4 ft (1.2m) below or to s

• Laars NEOTHERM NTH, LAARS Heating Systems Page 16 Proper precautions for freeze protection are recommended for boiler installations in areas where the danger of freezing exists. Power outage, interruption of gas supply, failure of system components, activation of safety devices, etc., may prevent a boiler from firing. Any time a boiler is subjected to freezing conditions, and the boiler is not able to fire, and/or the water is not able to circulate, there is a risk of freezing in the boiler or in the pipes in the system. When water freezes, it exp

• Laars NEOTHERM NTH, LAARS Heating Systems Page 24 to install an anti-scald device may lead to property damage, personal injury or death. 5.3 Pump Connections The boiler pump is wired at the factory (pump mounted models only). The NeoTherm Control energizes the pump upon a call for heat. Once the call for heat is satisfied the pump will remain on for the defined pump overrun time. NOTE: System and DHW contacts are dry contacts. The appropriate voltage must be supplied to the contacts for proper operation. The system pump connections are located on Terminal Block 5 in the control panel (see Figure 18). The system pump contacts are rated for 120Vac, 7.4 amps. To use the contacts power must be supplied on one

• Laars NEOTHERM NTH, NeoTherm Boiler Page 17 Figure 12. Hydronic Piping — Single Boiler, Low Temp Radiant Space Heating using Low Loss Header and Zone Valves. must be maintained properly in a heating system, or they may become ineffective. Consult the glycol specifications, or the glycol manufacturer, for information about specific products, maintenance of solutions, and set up according to your particular conditions. 4.4 Recognized Chemicals The following manufacturers offer glycols, inhibitors, and anti foamants that are suitable for use in the NeoTherm. Please refer to the manufacturers instructions for proper selection and applicati

• Laars NEOTHERM NTH, NeoTherm Boiler Page 37 ITEM DESCRIPTION SIZE 80 SIZE 105 SIZE 150 SIZE 210 SIZE 285 SIZE 399 SIZE 500 Gas Train Components – See Figure 26 40 Combustion Air Blower RA2113700 RA2113700 RA2107500 RA2114200 RA2114200 RA2113100 RA2113100 41 Gas Valve/Venturi RV2017900 RV2017901 RV2017902 RV2017903 RV2017904 — — 42 Gas Valve —————RV2019200 RV2017800 43 Gas/Air Venturi ——————RA2113200 44 Manual Gas Valve —————RV2000200 RV2003000 45 Gas Valve Flange Kit ——————RP2050100 46 Gas Valve/Venturi Cork Gasket ——————RS21

• Laars NEOTHERM NTH, LAARS Heating Systems Page 38 69A Gasket Set (burner, ignitor, sensor & door gaskets) RS2109100 RS2109100 RS2109100 RS2109100 RS2109100 RS2109100 RS2109100 70 Front Refractory Tile RT2109000 RT2109000 RT2109000 RT2109000 RT2109000 RT2109000 RT2109000 71 Rear Refractory Tile R50D2021 R50D2021 R50D2021 R50D2021 R50D2021 R50D2021 R50D2021 72 Main Burner w/gasket R2069101 R2069102 R2069103 R2069104 R2069105 R2069106 R2069106 73 Flame Sensor w/gasket R2069200 R2069200 R2069200 R2069200 R2069200 R2069200 R2069200 74 Ignitor w/gasket R2069300 R2069300 R2069300 R2069300 R2069300 R2069300 R2069300 74A Ignitor Gasket R

• Laars NEOTHERM NTH, LAARS Heating Systems Page 12 create a nuisance or hazard. 3. Locate the vent terminal so that vent gases can-not be drawn into air conditioning system inlets. 4. Locate the vent terminal so that vent gases cannot enter the building through doors, windows, gravity inlets or other openings. Whenever possible, avoid locations under windows or near doors. 5. Locate the vent terminal so that it cannot be blocked by snow. The installer may determine that a vent terminal must be higher than the minimum shown in codes, depending upon local conditions. 6. Locate the terminal so the vent exhaust does not settle on building surfaces or other nearby objects. Vent produc

• Laars NEOTHERM NTH, NeoTherm Boiler Page 7 Figure 7. Dimensional Drawing. ABCDEFGHJK Connections SIZE in in in in in in in in in in NPT Size (in) water gas 80 19-3/8 18-3/8 8 11-1/4 12 21-1/8 14 13-5/8 9-3/8 8-7/8 1 1/2 105 19-3/8 18-1/8 5-7/8 10-5/8 11-5/8 20-7/8 14-1/8 13-3/8 7-7/8 8-7/8 1 1/2 150 19-3/8 18-1/8 3 10-3/4 7-1/2 19-3/8 14-1/8 13-1/4 5-1/8 8-7/8 1 1/2 210 26-5/8 18-1/8 3-1/8 17-3/4 7-5/8 19-3/8 14-1/8 17-3/4 5-1/8 8-7/8 1 1/2 285 26-5/8 18-1/2 5-3/4 14 17-3/4 19 14 20-1/8 5-1/8 8-3/4 1-1/4 3/4 399 31-1/2 18-5/8 4-1/8 14-5/8 21-3/8 19 19-1/4 25 5-1/8 8-3/4 1-1/4 3/4

• Laars NEOTHERM NTH, LAARS Heating Systems Page 22 SECTION 5. Electrical Connections WARNING The appliance must be electrically grounded in accordance with the requirements of the authority having jurisdiction or, in the absence of such requirements, with the latest edition of the National Electrical Code, ANSI/NFPA 70, in the U.S. and with latest edition of CSA C22.1 Canadian Electrical Code, Part 1, in Canada. Do not rely on the gas or water piping to ground the metal parts of the boiler. Plastic pipe or dielectric unions may isolate the boiler

• Laars NEOTHERM NTH, NeoTherm Boiler Page 3 SECTION 1. General Information WARNING The NeoTherm hydronic boiler must be installed in accordance with the procedures detailed in this manual, or the LAARS Heating Systems warranty will be voided. The installation must conform to the requirements of the local jurisdiction having authority, and, in the United States, to the latest edition of the National Fuel Gas Code, ANSI Z223.1/NFPA54. In Canada, the installation must conform to the latest edition of CSA B149.1 Natural Gas and Propane Gas Installation Code, and/or local codes. W

• Laars NEOTHERM NTH, NeoTherm Boiler Page 27 10. Recheck the water level in the expansion tank. If the water level exceeds ¼ of the volume of the expansion tank, open the tank drain, and drain to that level. 11. Shut down the entire system and vent all radiation units and high points in the system piping, as described in Step 4. 12. Close make-up water valve and check strainer in pressure reducing valve for sediment or debris from the make-up water line. Reopen make-up water valve. 13. Check gauge for correct water pressure and also check water level in the system. If the height indicated above the boiler insures that water is at the highest point in the circulating loop, then the system is ready for operation.

• Laars NEOTHERM NTH, LAARS Heating Systems Page 14 gas by checking the rating plate. NeoTherm will function properly without the use of high altitude modification at elevations up to 10,000 feet (3050 m). 2. The maximum inlet gas pressure must not exceed 13" W.C. (3.2kPa). The minimum inlet gas pressure is 4" W.C. (1.0kPa). 3. Refer to Tables 6A, 6B, 6C and 6D to size piping. 4. Run gas supply line in accordance with all applicable codes. 5. Locate and install manual shutoff valves in accordance with state and local requirements. 6. A sediment trap must be provided upstream of the gas controls. 7. All threaded joints should be coated with piping compound re

• NeoTherm Boiler Page 9 2.1.2 Intake Combustion Air The combustion air can be taken through the wall, or through the roof. When taken from the wall, it must be taken from out-of-doors by means of the LAARS horizontal wall terminal, shown in Table 3. See Table 2 to select the appropriate diameter air pipe. When taken from the roof, a field-supplied rain cap or an elbow arrangement must b

• Laars NEOTHERM NTH, LAARS Heating Systems Page 18 Figure 13. Hydronic Piping — Multiple Boilers (zoning with circulators). Temperature Rise in °F 20°F 25°F 30°F Flow H/L Flow H/L Flow H/L Size gpm feet gpm feet gpm feet 80 7.6 14.9 6.1 10.1 5.1 7.1 105 10.0 23.1 8.0 17.0 6.7 12.4 150 14.3 28.5 11.4 19.0 9.5 13.6 210 20.0 24.1 16.0 16.7 13.4 11.6 Temperature Rise in °C 11°C 14°C 17°C Flow H/L Flow H/L Flow H/L Size lpm m lpm m lpm m 80 7.6 14.9 6.1 10.1 5.1 7.1 105 10.0 23.1 8.0 17.0 6.7 12.4 150 14.3 28.5 11.4 19.0 9.5 13.6 210 20.0

More Instructions:

	Laars NEOTHERM NTH Installation and operation instructions manual 06-10-2023 104	DOWNLOAD
	Laars NEOTHERM NTH User information 22-03-2024 14	DOWNLOAD
	Laars NEOTHERM NTH Installation and operation instructions manual 12-11-2022 92	DOWNLOAD
	Laars NEOTHERM NTH Installation and operation instructions manual 05-04-2024 64	DOWNLOAD

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