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HTP OFT-30 Installation Manual

Oil-fired water heater
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NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held
liable for typographical errors in literature.
120 Braley Rd. P.O. Box 429
East Freetown, MA 02717-0429
Oil-Fired
Water Heater
INSTALLATION
MANUAL
www.htproducts.com

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  • Page 1 Oil-Fired Water Heater INSTALLATION MANUAL NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature. 120 Braley Rd. P.O. Box 429 East Freetown, MA 02717-0429 www.htproducts.com...
  • Page 2 The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important product information. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

  • Page 3: For The Installer

    FOR THE INSTALLER Installation or service of this water heater must be performed by licensed professionals where plumbing, air supply, venting, oil burner license and electrical work are required. Valves that reduce point-of-use temperature by mixing cold and hot water, as well as inexpensive devices that attach to faucets and limit hot water temperatures, are available.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS PART 1: GENERAL SAFETY INFORMATION .................... 5 A. PRECAUTIONS ..........................5 B. CHEMICAL VAPOR CORROSION....................5 C. IMPROPER COMBUSTION ......................6 D. EXTENDED NON-USE PERIODS ....................6 E. INSULATION BLANKETS ........................ 6 PART 2: SPECIFICATIONS ......................... 6 PART 3: LOCATING THE HEATER ......................

  • Page 5: Part 1: General Safety Information

    C. USING INSTRUMENTS TO ADJUST THE FLAME ..............15 D. DRAFT ............................16 E. NOZZLE (OIL INPUT) VARIATIONS ..................... 16 PART 14: IMPORTANT INSTALLATION AND MAINTENANCE REMINDERS ........16 A. INSTALLATION..........................16 B. MAINTENANCE ..........................16 PART 15: REPLACEMENT PARTS ......................18 PART 1: GENERAL SAFETY INFORMATION A.

  • Page 6: Improper Combustion

    E. INSULATION BLANKETS Insulation blankets available for external use on gas water heaters are not approved for use on your HTP Oil-Fired Water Heater. The purpose of an insulation blanket is to reduce standby heat loss encountered with storage tank water heaters. Your water heater meets or exceeds the ASHRAE/IES 90.1b standby heat loss standards, making an insulation blanket unnecessary.

  • Page 7: Part 3: Locating The Heater

    PART 3: LOCATING THE HEATER When installing the heater, consideration must be given to proper location. Locate in an area with adequate air supply, as close to the stack or chimney and as centralized to the piping system as possible. This unit must be installed on a non-combustible surface.

  • Page 8: Part 4: Installation Instructions

    PART 4: INSTALLATION INSTRUCTIONS Figure 1 – Installation Instructions NOTE: Diagrams shown with preferred burner dimensions. Other burners may not go with the tank. PART 5: LEVELING AND CLEARANCES A. LEVELING The heater must be installed level. If it is necessary to adjust the heater, use metal shims under the channel-type skid base.

  • Page 9: Part 6: Air Requirements

    PART 6: AIR REQUIREMENTS For safe operation, an ample supply of air must be provided for proper combustion and ventilation in accordance with Section 5.3 of the National Fuel Gas Code, NFPA-54/ANSI Z223.1 or applicable provisions of local building codes. An insufficient supply of air will result in a yellow, luminous burner flame, causing sooting of the heat exchanger and creating a risk of asphyxiation.

  • Page 10: Part 7: Thermal Expansion (Closed Systems)

    Since water is not compressible, some provision must be made for THERMAL EXPANSION to protect the system from excessive pressures. HTP recommends installing a properly and adequately sized expansion tank to meet the expanding volume of water.

  • Page 11: Vent Connector

    The instructions in this section on venting must be followed to avoid choked combustion or recirculation of flue gases. Such conditions cause sooting or risks of fire and asphyxiation. Heater must be protected from freezing downdrafts during shutdown periods. Remove all soot or other obstructions which will retard free draft from chimney. Venting materials used for this category 1 appliance must be in accordance with the National Fuel Gas Code and all state and local requirements.

  • Page 12: Part 9: Electrical Connections

    PART 9: ELECTRICAL CONNECTIONS This water heater is normally wired for 120 volts and shall be electrically grounded in accordance with local codes, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA No. 70 (latest edition). This water heater must be connected to a grounded, metal, permanent wiring system, or an equipment grounding conductor must be run with the circuit conductors and connected to the equipment grounding terminal or lead on the water heater.

  • Page 13: Part 11: Oil Line Connections

    For protection against excessive temperature and pressure, install temperature and pressure protective equipment required by local codes. This equipment must be certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials to meet the requirements for Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22.

  • Page 14: Return Line

    oil to the oil storage tank during the burner off cycle period. Do not run suction or return line overhead, as this greatly increases the possibility of air pockets, oil leaks, siphoning and transmission of noise. When the top of the oil storage tank is above the fuel unit and a gravity feed is not permitted, the suction line should run to a point above the tank where an approved anti-siphon valve and a 5/8"...

  • Page 15: Two Line System

    B. TWO LINE SYSTEM Install the pressure gauge and turn burner on. The system will vent itself through the return line and flame will appear as soon as air has been eliminated. In the event a lot of air is present in the oil, making it appear milky or frothy, flame is not sighted within 4 minutes, or the primary control locks out, reference the included Beckett Technical Information Bulletin, page 4, under the heading “Priming the Pump”.

  • Page 16: Draft

    After final adjustment, tighten lock screws on the air inlet, let unit cool and restart burner to be sure burner operates on a cold start. Remove the pressure gauge and install pipe plug. D. DRAFT Adjust the draft regulator so that there is -.01" to -.04" draft over the fire, maximum. Take readings and adjust air so that a minimum of 9 1/2% CO is obtained with a smoke reading between 0 and 1.
  • Page 17 3. When inspecting the tank for lime, also check the condition of the anode rods. When either rod has eroded to about a third of its diameter, it should be replaced. 4. Open the relief valve at least once annually to make sure it is not stuck. CAUTION: RELEASED WATER MAY BE HOT! Do not attempt to start the burner when excess oil has accumulated, when the unit is full of vapor, or when the combustion chamber is hot.

  • Page 18: Part 15: Replacement Parts

    PART 15: REPLACEMENT PARTS Figure 5 LP-340 REV. 7.13.10...

This manual is also suitable for:

Oft-70Oft-50

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