LAARS NeoTherm NTV (Sizes 150–850 MBTU/h) - Install and Operating Manual User Manual
Herm, Installation and operation instructions for, Modulating boiler model nth
Installation and Operation Instructions
Document 1252B
H2355200B
WARNING
If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
flammable 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 fire department.
Installation and service must be performed
by a qualified installer, service agency, or gas
supplier.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water boiler and heater installation and maintenance. Improper installation and/or operation
could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or
death. Improper installation and/or operation will void the warranty.
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 inflammables 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
vous trouvez.
• 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 qualifié ou
par le fournisseur de gaz.
Installation and Operation
Instructions for
N
EO
T
HERM
®
Modulating Boiler
Model NTH
Sizes 080–850 MBTU/h
Water Heater
Model NTV
Sizes 150–850 MBTU/h
Document Outline
- 1252B NeoTherm I/O Cover
- Table of Contents
- 1 - GENERAL INFORMATION
- 2 - LOCATING THE APPLIANCE
- 3 - VENTING AND COMBUSTION AIR
- 4 - GAS SUPPLY AND PIPING
- 5 - PUMP REQUIREMENTS
- 6A - WATER CONNECTIONS -NTH BOILER
- 6A.1 NTH System Piping -Hot Supply Connections
- 6A.2 NTH Cold Water Make-Up
- 6A.3 Condensate Drain
- 6A.4 Freeze Protection
- 6A.5 NTH Suggested Hydronic Piping Schematics
- Hydronic Piping, Single Boiler, Zoning with Circulators
- Hydronic Piping, Single Boiler, Low Temp Radiant Space Heating
- Hydronic Piping — Multiple Boilers, Zoning with Circulators
- Hydronic Piping — Multiple Boilers with Indirect DHW Tank Piped from System Loop
- Hydronic Piping — Multiple Boilers, Reverse Return, Multi-Temp Zones, Zoning with Circulators
- Hydronic Piping — Heating Zones with Indirect DHW Tank Piped with Zone Pumps
- Hydronic Piping, Multiple Boilers with Indirect DHW Off of One Boiler
- 6A.6 Recognized Chemicals
- 6B - WATER CONNECTIONS - NTV WATER HEATER
- 7 - THE USER INTERFACE
- 8A - QUICK START MENU
- 8B - BASIC INSTALLATION AND WIRING
- 8C - DETAILED SETUP INSTRUCTIONS, ELECTRICAL, and WIRING DIAGRAMS
- 8C.1 24 VAC Transformerwith Integral Circuit Breaker
- 8C.2 Hydronic Heating Demand
- 8C.3 Anti-Short-Cycle (ASC)
- 8C.4 Outdoor Air Temperature Sensor
- 8C.5 Outdoor Reset
- 8C.6 Warm Weather Shutdown
- 8C.7 Domestic Hot Water
- 8C.8 Cascading Lead/Lag Operation
- 8C.9 Hydronic Heating Using ExternalModulation Control -
- 8C.10 Optional Field Connections
- 8C.11 Connections to aBuilding Automation System
- 8C.12 Ladder and Wiring Diagrams
- Wiring Diagram, All Sizes (with standard EMEA display)
- Wiring Diagram, All Sizes - with Optional Full-Color Touchscreen
- 9 - FIRST START-UP AND ADJUSTMENT INSTRUCTIONS
- 10 - MAINTENANCE
- 11 - OPERATING DETAILS AND TROUBLESHOOTING
- 12 - REPLACEMENT PARTS (several pages)
- Appendix A -SOFTWARE CONTROL FUNCTIONS (several pages)
- Appendix B -ERROR MESSAGES (several pages)