1. Manuals
  2. Brands
  3. Detroit Radiant Products Manuals
  4. Gas Heater
  5. UH Series
  6. Installation manual

Detroit Radiant Products UH Series Installation Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
UH Series
Installation Manual
The UH Series heater is a gas-fired unit heater. This manual provides specific information related to the
UH Series models. All persons involved with the installation, operation, and maintenance of the heater
system must read and understand the information in this manual.
Improper installation, adjustment, alteration, service, or maintenance can cause
property damage, serious injury, or death. Read and understand the installation,
operating, and maintenance instruction thoroughly before installing or servicing this
equipment.
This heater must be installed and serviced by trained gas installation and service
personnel only. Failure to comply could result in personal injury, asphyxiation, death,
and fire or property damage.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any appliance.
Do not use this heater in indoor living or sleeping quarters! Installation of this unit in
a residential indoor living space may result in property damage, serious injury,
asphyxiation, or death.
For Your Safety
If you smell gas:
• Open windows.
• Do not touch any electrical switch.
• Extinguish any open flame.
• Do not use any phone in your building.
INSTALLER: Present this manual to the end user.
Keep these instructions in a clean and dry place for future reference.
Model#: ___________________ Serial #: _________________________
WARNING
!
• 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.
(located on rating label)
Installation, Operation,
Maintenance, and Parts
LIOUH-Rev. 05313
Print: 2M-12/15_r11-06/19 (CDS)
Replaces: LIOUH-1M-8/13 (CDS)

Advertisement

Table of Contents
loading

Related Manuals for Detroit Radiant Products UH Series

Summary of Contents for Detroit Radiant Products UH Series

  • Page 1 Installation, Operation, Maintenance, and Parts The UH Series heater is a gas-fired unit heater. This manual provides specific information related to the UH Series models. All persons involved with the installation, operation, and maintenance of the heater system must read and understand the information in this manual.

  • Page 2: Table Of Contents

    Series Contents 1.0 Introduction ..............3 Overview .

  • Page 3: Introduction

    The intent of this manual is to provide information regarding safety, design guidelines, installation, operation, and maintenance of the UH Series gas-fired unit heater. You must read and understand the instructions and all safety warnings before installing the gas-fired unit heater. This manual is property of the owner, and must stay with the owner or unit after installation is complete.

  • Page 4: Initial Installation Considerations And Pre-Checks

    Introduction Series • Initial Considerations and Pre-Checks Initial Installation Considerations and Pre-Checks WARNING Improper installation, adjustment, alteration, service, or maintenance can cause property damage, serious injury, or death. Read and understand the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.

  • Page 5: Product Specifications

    Product Specifications Product Specifications The UH Series unit heater is a single input warm air heater with an average thermal efficiency of 80%, unless otherwise indicated on the rating label. All units are to be supplied with single-phase 60 Hz 120VAC power.

  • Page 6: Safety Labels And Their Locations

    COTÉ ACCÉDEZ INCH INCH INCH INCH INCH INCH DETROIT RADIANT PRODUCTS COMPANY FOR COMMERCIAL / INDUSTRIAL USE. 21400 HOOVER ROAD - WARREN, MI 48089 FOR INDOOR USE ONLY. MADE IN U.S.A. (586) 756-0950 - www.drp-co.com Rating Label (located inside of panel)
  • Page 7 Series Introduction • Safety Labels and Their Locations F/N: LLUHCL001c For Your Safety F/N: LLWUH001 - Wiring Diagram Service Access Door View (Inside View) Status LED Each of the following status codes is determined by the number of fl ashes on the status light. See the Manual for additional information. United Technologies Circuit Board Fenwal Circuit Board # of Flashes...

  • Page 8: Safety

    Safety Series • Warning Symbols Safety Read and understand all safety information and warnings in this manual prior to installation, operation, and maintenance of this unit heater. Warnings indicate a potentially hazardous situation which, if not avoided, could result in death or injury. WARNING Improper installation, adjustment, alteration, service, or maintenance can cause property damage, serious injury, or death.

  • Page 9: Applications

    Commercial / Industrial The UH Series unit heater is designed and certified for use in industrial and commercial buildings, such as warehouses, manufacturing plants, aircraft hangars, and vehicle maintenance shops. For maximum safety, the building must be evaluated for potential problems before installing the heater system.

  • Page 10: Standards, Certifications, And Government Regulations

    Safety Series • Standards, Certifications, and Government Regulations Standards, Certifications, and Government Regulations Installation of this gas-fired heater must conform with all applicable local, state, and national specifications, regulations, and building codes. Contact the local building inspector and/or fire marshal for guidance.
  • Page 11 Series Safety • Standards, Certifications, and Government Regulations Chart 2.2 • Standard and Code Installation Guidelines • Building Location Building Guidelines Location High Guidelines Altitude Installation of this heater is approved, without modifications, for elevations up to 2,000 feet (610 m) above MSL (sea level) in the United States. For elevations above 2,000 feet, the heater input must be derated.

  • Page 12: Clearances To Combustibles

    Safety Series • Clearances to Combustibles Clearances to Combustibles Clearance to combustibles is defined as the minimum distance that must exist between the specified feature of the heater, and any combustible items. It also pertains to the distance that must be maintained from moving objects around the unit heater.

  • Page 13: Installation

    Series Installation • Louver Installation Installation Louver Installation For 0° Mounting: Guide the plunger side of the louver into the larger of the two holes (as shown in Figure 3.1). The louver arch must face up. When the plunger is in the hole, press the louver in collapsing the internal spring of the plunger. Guide the other side of the louver into place by aligning the indexing winglet into place (as shown in Figure 3.2).

  • Page 14: Configuring The Support Brackets

    Installation Series • Configuring the Support Brackets NOTICE High humidity or saltwater atmospheres will accelerate heater corrosion and reduce useful life. Do not install the heater in locations where water (in the form of rain, drips, or spray) could fall onto the gas ignition components.

  • Page 15: Hanging The Unit Heater

    Series Installation • Hanging Heater • Suspending Unit with Lag Bolts/Screws or Threaded Rod Hanging the Unit Heater To ensure proper operation, the heater must be installed in a level horizontal position. The units are designed to be hung from the brackets (supplied) and must be field configured prior to hanging the unit. The mechanism that suspends the heater from the brackets (e.g.

  • Page 16: Pre-Configuration For 180° Installation

    Installation Series • Rotated 180° Installation Attach threaded rod to prepared anchoring device. Adjust the threaded rod until the unit is level and equal weight distribution is achieved. The threaded rod must be perpendicular with the unit heater. Do not install threaded rods at an angle, as this can result in weakened structural integrity or undue noise.

  • Page 17: Rotating The Service Access Door Panel Handle

    Series Installation • Rotating the Service Door Handle • Recommended Mounting Heights Rotating the Service Access Door Panel Handle Remove and retain screws securing the service access door. Remove the two (2) screws holding the handle in place, and rotate the handle 180°. Secure handle in new position with retained screws.

  • Page 18: Gas Supply Installation Instructions

    Installation Series • Gas Supply Installation Instructions Gas Supply Installation Instructions The gas supply to the unit heater must be connected and tested in accordance with national, state, provincial, and local codes along with guidelines in this manual. In the United States refer to the latest edition of the ANSI Z223.1 (NFPA54) Standard and in Canada refer to the latest edition of the CAN/ GCA B149.1 Standard.
  • Page 19 Series Installation • Gas Supply Installation Instructions Refer to Chart 3.2 for natural gas and Chart 3.3 for propane to determine the cubic feet per hour (CFH) required for the type of gas and size of unit to be installed. To determine the proper pipe diameter, use the CFH value and the length of pipe necessary from Chart 3.4.
  • Page 20 175’ 200’ The UH Series heater is equipped to receive a gas supply line nipple of ½”NPT Schedule 40 metallic pipe. All piping must be installed in accordance with the requirements outlined in the National Fuel Gas Code ANSI/Z223.1 (latest edition) or CSA-B149.1 and B149.2. Support all gas supply piping with pipe hangers, metal strapping, or other suitable material.

  • Page 21: Leak Testing

    Series Installation • Gas Supply Installation Instructions • Leak Testing Figure 3.7 • Recommended Hardware – Manual Shut Off and Sediment Trap Flow of Shut Off To Unit Ground Joint Union Gas Supply Line 1/8-in. NPT Test Connection (Plugged) 3-in. Minimum Sediment Trap...

  • Page 22: Electrical Requirements And Wiring Diagrams

    Installation Series • Electrical Requirements and Wiring Diagrams • Internal Wiring Diagrams Electrical Requirements and Wiring Diagrams WARNING Shock hazard. Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage. Any original factory wiring that requires replacement must be replaced with wiring material having a temperature rating of at least 105°C.

  • Page 23: Field Wiring Supply Voltage

    Series Installation • Field Wiring Supply Voltage Field Wiring Supply Voltage Before proceeding with electrical connections, ensure that the supply voltage, frequency, phase, and current capacity meet the requirements specified on the rating plate. A dedicated line voltage supply with properly sized wire should run directly from the main electrical panel to the heater. The power to the unit must be protected with a circuit breaker appropriate for the load.
  • Page 24 Installation Series • Field Wiring Figure 3.9 • Field Wiring Flexible Conduit BX or Romex Connector Junction Box L2 (Neutral) Ground Green White to L2 (Ground) (Neutral) Black to L1 (Hot) Connect wires together with UL approved wire connectors. Green to Ground Black to L1 White to L2 NOTE: A UL Listed switch may be installed in the 2x4 junction box for use as a service disconnect.

  • Page 25: Thermostat Connection

    NOTE: Different thermostats operate according to their particular features. Refer to the thermostat’s specifications for details. Each UH Series heater requires a single stage thermostat rated for 24VAC to operate. The heater comes standard with a terminal strip for making the thermostatic connections, located on the back panel.

  • Page 26: Thermostat Location

    Installation Series • Thermostat Location Thermostat Location The location of the thermostat should be determined by the desired heating requirements and be mounted on an inside wall five (5) feet above the finished floor. Locate the thermostat in a conspicuous location, away from where it could be influenced by heat from the unit or other sources, as this may cause the unit to short cycle.

  • Page 27: Venting

    Replacing Existing Equipment Venting The UH Series unit heater must be vented as described here to properly direct the flue gases from the unit to the outside atmosphere. The venting can terminate vertically through the roof (up) or horizontally through a sidewall (sideways).

  • Page 28: General Venting Requirements

    General Venting Requirements General Venting Requirements The venting system for the UH Series heaters may terminate horizontally through a sidewall or vertically through the roof, and may be individually or commonly vented. Configuration of the vent termination determines the category type. All model heaters must be installed in accordance to the requirements of this section, as well as the requirements of its category determination, as described in this manual.
  • Page 29 Series Installation • General Venting Requirements General Vent Requirements Figure 3.11 • Vent Cap 24 in. Min.* Roof* Storm Collar Adjustable Roof Flashing 1 in. Minimum Clearance Double-Wall B Vent 1 in. Minimum Clearance Fire Stop Spacer Heater B to C Adapter Clean Out Tee Fitting Clean Out Cap #8 Sheet Metal Screws (field supplied)

  • Page 30: Vertical Venting (Category I)

    An appliance that operates with a non-positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent is said to be ‘Category I’. The UH Series heater is considered a Category I appliance if the venting system meets all of the following criteria: •...

  • Page 31: Horizontal Venting (Category Iii)

    An appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent is said to be ‘Category III’. The UH Series heater is considered a Category III appliance if the venting system meets all of the following criteria: •...
  • Page 32 Installation Series • Vent Locations and Clearances • Sidewall Venting Requirements All horizontal Category III vents must be terminated with a Simpson-Duravent sidewall vent cap (P/N: SWD-4 for 4-inch venting or P/N: DB-208 for 3-inch venting). Vent Locations and Clearances: •...

  • Page 33: Common Venting (Category I)

    Series Installation • Common Venting (Category I) • Common Rooftop Venting Common Venting (Category I) The common vent system and all attached appliances must be Category I. The vent connector should be routed in the most direct route from the units to the common vent. Where two or more vent connectors enter a common gas vent or chimney flue, the smaller connector shall enter at the highest level consistent with the available head room or clearance to combustible material.

  • Page 34: Concentric Venting

    Installation Series • Concentric Venting • Combustion Air Requirements Concentric Venting Contact the factory for concentric venting requirements. Combustion Air Requirements Combustion air may be supplied to the heater by indoor or outdoor means. Follow these guidelines and all applicable codes for all models prior to installing the combustion air duct work. Local codes may vary.

  • Page 35: Separated Combustion Systems

    Separated Combustion Systems Separated Combustion Systems All UH Series heaters come with a factory-installed combustion air adapter for attaching air intake ducts to the heater. Attach the air intake duct material to the adapter with three (3) non-corrosive sheet metal screws. If necessary, drill pilot holes prior to attaching the air intake ducts. The diameter of the intake ducts must not be smaller than the factory installed adapter.
  • Page 36 Installation • Separated Combustion Systems Combustion Air Sidewall Intake - Side View Figure 3.15 • Outside Exhaust Terminal Cap Listed Wall Thimble (P/N: DB-208 or SWD-4) 6 in. 12 in. Clean-out Min. Min. 1/4 in. pitch per foot Combustion Air (upward or downward) Intake Cap Heater...

  • Page 37: Room Air Combustion Systems

    Series Installation • Room Air Combustion Systems Room Air Combustion Systems When operating this unit as a room air combustion appliance, the factory installed air intake collar may be removed and the required air for combustion can be taken into the appliance from the space, so long as it is not a confined space.

  • Page 38: Unit Start-Up (Commissioning)

    Installation Series • Unit Start-Up (Commissioning) • Pre-Start Up Checks Unit Start-up (Commissioning) WARNING Improper installation, adjustment, alteration, service, or maintenance can cause property damage, serious injury, or death. This heater must be installed and serviced by a trained gas installation and service personnel only. CAUTION Shock Hazard.

  • Page 39: Verify Proper Inlet Pressure

    Series Installation • Verify Proper Inlet Pressure Verify Proper Inlet Pressure Before starting up the unit, smell all around the unit heater for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. When turning the gas shut off valve, only use your hand.

  • Page 40: Verify Manifold Pressure

    Installation Series • Verifying Manifold Pressure Remove the pressure gauge tube and the 1/8 inch NPT hose connector. Replace the inlet pressure tap plug on the gas control valve. Leak check the re-installed pressure tap plug using a soap solution or equivalent method as described in ANSI Z223.1 (NFPA 54).

  • Page 41: Prior To Leaving The Job Site

    Series Installation • Prior to Leaving the Job Site While waiting for the unit to stabilize, observe the characteristics of the flame. The flame should be stable and should not lift from any burner. The burner color should be light blue, and not create excessive noise.

  • Page 42: High Altitude Operation

    The UH Series heater is factory configured for altitudes from 0 – 2,000 ft above sea level. If the unit heater is being installed at an elevation above 2,000 ft, the input rate will have to be de-rated to ensure proper operation.
  • Page 43 Series Installation • High Altitude Operation Chart 3.6 • High Altitude Conversion Kits for Elevations of 4,501 to 7,000 Feet Kit Number Orifice Size Number of Model Orifices Natural Gas Propane Natural Gas Propane UH-30 HKN-51_2 HKP-57_2 51 DMS 57 DMS UH-45 HKN-51_3 HKP-57_3...

  • Page 44: Operation

    Operation Series • Sequence of Operation Operation WARNING This appliance does not have a pilot ignition. It is equipped with an ignition device which automatically lights the burner. Do not attempt to light the system by hand. Sequence of Operation Standby: The ignition control continually checks for internal faults, circuit integrity and relay contact positioning.

  • Page 45: Shutdown Procedures

    Series Operation • Shutdown Procedures Shutdown Procedures: Set the thermostat to the lowest setting. Turn OFF all electrical power to the appliance if service is to be performed. Turn manual shut off knob clockwise to OFF. Do not force. If the heater’s internal diagnostic LED displays any of the signals listed in Charts 4.1-4.2, address the indicated problem as outlined.

  • Page 46: Troubleshooting Guide

    Series Troubleshooting Guide Troubleshooting Guide Limit switch is open or pressure Turn on control Find source of switch is stuck closed. Find device for heat. electrical problem. faulty switch and repair. Does the draft Does the heater have 120 VAC Does the air circulating inducer motor at the main power connection?
  • Page 47 Series Troubleshooting Guide Bypassing any switch is intended for testing purposes only. Do not leave switch bypassed NOTICE during normal operation or the heater’s built-in safety mechanisms will be compromised. Corrective Process Start Remove Action Question Question obstruction. Check fuse on circuit board and Is there 24 VAC internal controls transformer.
  • Page 48 Series Troubleshooting Guide Continued from page 46. Is the gas supply Check inlet pressure to the heater. Is it within Do the burners ignite? valve to the heater in the minimum and maximum allowable range the “on” position? as per the rating plate? Turn on gas supply Adjust inlet pressure.
  • Page 49 Series Troubleshooting Guide Does the heater’s gas Check manifold pressure. Are Were the gas lines type match the gas you reading within the specified purged of all air? supplied? pressures per the rating plate? Contact local Adjust pressure or Purge gas lines. representative or factory.

  • Page 50: Maintenance

    Maintenance Series Maintenance To check gas tightness of the safety shut off valves, turn off the manual valve upstream of the appliance combination control. Remove the hex head plug on the inlet side of the combination control and connect a manometer to that tapping. Turn the manual valve on to apply pressure to the combination control.

  • Page 51: Limited Warranty Terms And Conditions

    Prompt Disposition: Detroit Radiant Products Company will make a good faith effort for prompt correction or other adjustment with respect to any product which proves to be defective within limited warranty. For any product believed to be defective within limited warranty, first write or call dealer from whom the product was purchased.

  • Page 52: Heater Assembly Components And Parts List

    Maintenance • Series Heater Components and Parts List UH Series Cabinet 1 (UH-30 & UH-45) Parts Listing Figure 6.1 • Heater Assembly Components...
  • Page 53 Series Maintenance • Heater Components and Parts List • Chart 6.1 UH Series Cabinet 1 (UH-30 & UH-45) Parts List Part No. Description Part No. Description CKP_56_2 Propane Conversion Kit (UH-30) UF-553 Ignition Control Circuit Board CKP_56_3 Propane Conversion Kit (UH-45)
  • Page 54 Maintenance • Series Heater Components and Parts List UH Series Cabinet 2 (UH-60, UH-75) Parts Listing Figure 6.2 • Heater Assembly Components...
  • Page 55 Series Maintenance • Heater Components and Parts List • Chart 6.2 UH Series Cabinet 2 (UH-60, UH-75) Parts List Part No. Description Part No. Description CKP_56_4 Propane Conversion Kit (UH-60) UF-601 Inducer Motor Assembly, Small CKP_56_5 Propane Conversion Kit (UH-75) UF-614 4"...

  • Page 56: Kit Contents

    Installation, Operation, Maintenance and Parts The UH Series heater is a gas-fired unit heater. This manual provides specific information related to the UH Series models. All persons involved with the installation, operation and maintenance of the heater system must read and understand the information in this manual.

This manual is also suitable for:

Uh-30nUh-45nUh-60nUh-75nUh-30pUh-45p ... Show all

Table of Contents