HTP UFT-100W User Manual

272 Duchaine Blvd. New Bedford, MA 02745 www.htproducts.com
LP-542 REV. 6.2.16
Universal Fire Tube Boiler
Wall Mount
INSTALLATION
START-UP
MAINTENANCE
PARTS
WARRANTY
Models
UFT-80W / 100W / 120W / 140W / 175W / 199W
Heat Exchanger Bears the ASME “H” Stamp
NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors
in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
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 GASOLINE OR OTHER FLAMMABLE VAPORS
AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER BOILER.
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 neighbor’s phone. Follow the gas supplier’s instructions.
 If you cannot reach your gas supplier, call the fire department. Installation and service must be provided by a qualified installer,
service agency, or the gas supplier.

HTP UFT-100W Specifications

General

Fuel Type	Natural Gas or Propane
Heat Exchanger Material	Stainless Steel
Input BTU	100, 000 BTU/h
Efficiency	95%
Boiler Type	Condensing

Summary

Safety Regulations

Operation and Installation Warnings

Critical warnings for safe boiler operation and installation, covering gas and combustion hazards.

Improper Combustion Hazards

Discusses risks of improper combustion, carbon monoxide, and venting safety.

Gas Safety Precautions

Boiler Water Chemistry Requirements

Boiler Location Preparation

Pre-Installation Location Checks

Critical factors to consider before selecting the boiler's installation site.

Service and Operation Clearances

Minimum clearances required around the boiler for service and operation.

Garage and Closet Installation Guidelines

Exhaust Vent and Intake Pipe Installation

Guidelines and requirements for installing vent and intake piping.

Preventing Combustion Air Contamination

Methods to avoid contaminants entering the combustion air supply.

Removing from Common Vent Systems

Wall-Mounting the Boiler

Instructions and safety precautions for mounting the boiler on a wall.

Venting System Installation

Intake Pipe and Exhaust Vent Guidelines

General rules for installing vent and intake pipes according to codes.

Approved Vent Materials

List of materials permitted for use in venting systems.

Allowed Combined Vent Lengths

Securing Vent and Intake Connections

Vent Termination Methods

Various methods and requirements for terminating vent systems.

Install the Condensate Drain

Gas Piping Installation

Excess Flow Valve (EFV) Precautions

Gas Pipe Sizing Tables

Gas Connection Requirements

Specifications and requirements for making gas connections.

Water Piping Installation

General Plumbing Connection Guidelines

Central Heating Piping Methods

Methods for connecting central heating system water piping.

Circulator Sizing

CH Pressure Relief Valve Installation

Proper installation and function of the central heating pressure relief valve.

Built-in Low Water Cut-Off (LWCO)

Optional LWCO Interface Kit

How the Boiler Operates

Heat Exchanger and Combustion System

Details on the stainless steel heat exchanger and modulating combustion system.

Control System Features

Overview of the control system, sensors, safeties, and modes.

Boiler Connections and Interfaces

Operational Modes

Connect Electrical Power and Initial Startup

Wiring Information and Grounding

Essential procedures for proper electrical wiring and grounding.

DIP Switch Settings

Wiring a Cascade System

Instructions for connecting multiple boilers in a cascade setup.

Operating System Instructions

Control Panel Overview

Description of buttons and functions on the boiler's control panel.

LCD Display and Icon Descriptions

Explanation of the LCD display elements, icons, and status indicators.

Boiler Start-Up Sequence

Changing the CH Set-Point

Status Display Mode

Installer Mode Configuration

Accessing and utilizing the installer mode for advanced settings.

Error Mode and Error Codes

Understanding boiler error codes and their corresponding remedies.

Start-Up Preparation

Boiler Water Chemistry

Gas Leak Detection

Filling and Testing the Water System

Steps for filling the system with water and conducting leak tests.

Purging Air from the System

Condensate Removal Procedures

Final Checks Before Boiler Startup

Adjusting Gas Pressure at the Boiler

Procedure for setting and verifying the correct gas pressure.

Setting and Verifying Combustion

Adjusting and verifying combustion settings using a analyzer.

Installation and Start-Up Checklist

Troubleshooting Guide

Annual Maintenance Procedures

Check Surrounding Area for Hazards

Check Exhaust Vent and Intake Pipe Terminations

Check Exhaust Vent and Intake Piping Integrity

Verify Pressure Relief Valve Function

Check Vent Condensate Drain System

Check Primary and Gas Piping for Leaks

Test Pressure Relief Valve Operation

Flushing Heat Exchanger

Condensate System Maintenance

Limited Warranty Information

Owner Responsibilities for Warranty

Warranty Exclusions

Warranty Service Request Procedures

Start-Up Report

Light-Off Activities Checklist