NTI Installation Instructions
Company: NTI Boilers Inc.
Contact: Toll Free: 1-800-688-2575 | Web: www.ntiboilers.com | Email: info@ntiboilers.com
LLH Kit
TRX150/199/199C & FTVN Low Loss Header Kit
Revision Date: 2021-11-08
Overview
The LLH Kit is designed to easily connect to an NTI FTVN or TRX150/199/199C boiler, without the need for cutting, threading, or soldering, to form the primary loop for the boiler. The kit includes an isolation valve, IWH return cap and gaskets.
Kit Contents
| Item | P/N | Description | Qty |
|---|---|---|---|
| A | 87318 | Primary Loop Supply Pipe | 1 |
| B | 87317 | Primary Loop Return Pipe | 1 |
| C | 87315 | Isolation Valve, 1-1/4" M BSPP | 1 |
| D | 87147 | Gasket, 1-1/4" | 4 |
| E | 85167 | Gasket, 1" | 1 |
| F | 87499 | Cap, Brass 1" (IWH return cap) | 1 |
| G | TBD | Assembly Instructions (this document) | 1 |
A visual representation shows the various components of the LLH Kit, labeled A through G. Component A is a pipe, B is another pipe, C is an isolation valve, D and E are gaskets, and F is a brass cap. Component G is indicated as the assembly instructions.
Assembly Instructions
Loosely install pipes (A) and (B) together with isolation valve (C) onto the boiler; use 1-1/4" gaskets (D) at each connection. Fix the brass cap (F) with 1" gasket (E) to the return pipe. Install the Tridicator (included with the boiler) to the supply pipe; use thread sealant on the threads. Ensure all connections are firmly tightened – check for leaks.
A diagram illustrates the assembly process, showing pipes labeled A and B being connected to the boiler via the isolation valve C, with gaskets D and E, and cap F. Arrows indicate the connection points.
Boiler Connections and Dimensions
A front view diagram of the NTI boiler shows its overall dimensions and connection points. The total height is indicated as 40 7/8 inches. Key connection ports are labeled: 'CH Supply' on the left, 'CH Return' on the right, and 'IWH Return (non-Combi models only)' also on the right. A pressure gauge (Tridicator) is shown connected to the CH Supply line.
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