Laars NeoTherm NTH Installation And Operation Instructions Manual

Also see for Neotherm NTH: Service manual Installation and operation instructions User information Installation and operation instructions Installation and operation instructions

Laars NeoTherm NTH Installation And Operation Instructions Manual Manual pdf 11 page image

NeoTherm Boilers and Water Heaters Page 11SECTION 2.Locating the Appliance2.1 Locating the ApplianceNeoTherm is for indoor installations only.The appliance should be located to provideclearances on all sides for maintenance and inspection.It should not be located in an area where leakage of anyconnections will result in damage to the area adjacent tothe appliance or to lower floors of the structure.When such a location is not available, it isrecommended that a suitable drain pan, adequatelydrained, be installed under the appliance.The appliance is design certified by CSA-International for installation on combustible flooring; inbasements; in closets, utility rooms or alcoves.NeoTherm Boilers must never be installed oncarpeting. The location for the appliance should bechosen with regard to the vent pipe lengths and externalplumbing and on a level surface. The unit shall beinstalled such that the gas ignition system componentsare protected from water (dripping, spraying, rain, etc.)during operation and service (circulator replacement,control replacement, etc.). When vented vertically, theNeoTherm must be located as close as practical to thevertical section of the vent. If the vent terminal and/orcombustion air terminal terminate through a wall, andthere is potential for snow accumulation in the localarea, both terminals should be installed at an appropriatelevel above grade or the maximum expected snow line.The dimensions and requirements that are shownin Table 1 should be met when choosing the locationsfor the appliance.2.2 Locating Appliance for Correct VentDistance from Outside Wall orRoof TerminationThe forced draft combustion air blower in theappliance has sufficient power to vent properly whenthe guidelines in Table 2 are followed.NOTE: When located on the same wall, the NeoThermcombustion air intake terminal must be installed aminimum of 12" below the exhaust terminal.Models 399-850 also require a minimum horizontal distance fromintake to exhaust terminal of 36".For concentric vent terminal kit (optional), followinstallation instructions included with the kit.APPLIANCE SUGGESTED SERVICE ACCESS CLEARANCESURFACE INCHES CMLeft Side 1 2.5Right Side 12 31Top 24 61Back 6 15Closet, Front (285-500) 6 15Alcove, Front (285-500) 24 61Front (600-850) 24 61Vent – –Certified by CSA for zero clearance tocombustible materials on all sides.Table 1. Clearances.INTAKE / EXHAUSTSTANDARD MAX EQUIV. OPTIONAL MAX EQUIV.SIZE VENT FT. M VENT FT. M80 2" 40 6.1 3" 100 30.5105 2" 40 6.1 3" 100 30.5150 3" 100 30.5 n/a — —199/ 210 3" 100 30.5 n/a — —285 4" 100 30 n/a — —399 4" 100 30 n/a — —500 4" 100 30 n/a — —600 4" 100 30 n/a — —750 4" 40 6.1 6" 100 30850 4" 40 6.1 6" 100 30Installations in the U.S. require exhaust vent pipe that is a combinationof PVC & CPVC complying with ANSI/ASTM D1785 F441 or stainlesssteel complying with UL1738. Installations in Canada require exhaustvent pipe that is certified to ULC S636.Intake (air) pipe must be PVC or CPVC that complies with ANSI/ASTMD1785 F441, ABS that complies with ANSI/ASTM D1527 orgalvanized material.Installer must comply fully with manufacturer's installation instructions,including use of minimum exhaust length CPVC, to maintain ANSIZ21.13 safety certification.Closet and alcove installations do not allow the use of PVC under anycircumstancesTo calculate max equivalent length, measure the linear feet of thepipe, and add 5 feet (1.5m) for each elbow used.Table 2. Vent / Air Pipe Sizes.