Table of Contents
Advertisement
Quick Links
1385 Lionel-Boulet blvd.
Varennes, Quebec
J3X 1P7, Canada
DT Series
INDIRECT GAS-FIRED DUCT FURNACE
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
FOR INDOOR OR OUTDOOR INSTALLATIONS
Gas Unit Heaters, Gas Packaged Heaters, Gas Utility Heaters, And Gas-Fired Duct Furnaces
CSA 2.6 and ANSI Z83.8
www.nagasinnovation.com
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Nagas DT Series
Summary of Contents for Nagas DT Series
- Page 1 1385 Lionel-Boulet blvd. Varennes, Quebec J3X 1P7, Canada DT Series INDIRECT GAS-FIRED DUCT FURNACE INSTALLATION, OPERATION AND MAINTENANCE MANUAL FOR INDOOR OR OUTDOOR INSTALLATIONS Gas Unit Heaters, Gas Packaged Heaters, Gas Utility Heaters, And Gas-Fired Duct Furnaces CSA 2.6 and ANSI Z83.8...
- Page 2 If you cannot reach your gas supplier, call the fire department; • Installation and service must be performed by a qualified installer, service agency or the gas supplier. THIS INSTRUCTION MANUAL MUST ALWAYS BE AVAILABLE AND KEPT WITH THE HEATER AT ALL TIMES. DT Series - Installation manual (V4_2022)
- Page 3 • Always disconnect and lock out power before servicing this equipment. All work should be done by a qualified technician. • DO NOT bypass any interlock or safety switches under any circumstances. DT Series - Installation manual (V4_2022)
- Page 4 SERIAL NUMBER: ___________________________________________________________ INSTALLER: ___________________________________________________________ ADDRESS: ___________________________________________________________ PHONE: ___________________________________________________________ EMAIL: ___________________________________________________________ INSTALLATION DATE: ___________________________________________________________ MANUFACTURER: Nagas Innovation ADDRESS: 1385 Lionel-Boulet Blvd., Varennes, Quebec, J3X 1P7, Canada PHONE: 1-888-514-8007 FAX: 450-649-8756 EMAIL: service@nagasinnovation.com WEB SITE: www.nagasinnovation.com DT Series - Installation manual (V4_2022)
-
Page 5: Table Of Contents
INLET GAS PRESSURE ......................... 21 HEATER SHUTDOWN ......................... 21 9.1. EXTENDED SHUTDOWN ..................... 21 9.2. EMERGENCY SHUTDOWN ....................22 9.3. HEATER ON AFTER A FLAME FAILURE ALARM ..............22 FLUE VENT & COMBUSTION AIR INTAKE ................22 DT Series - Installation manual (V4_2022) - Page 6 NOTICE: The features, illustrations and description in this document were, to our knowledge, accurate at the time they were approved for printing. Nagas Innovation has a policy of continuous product improvement and reserves the right to change design and specifications, stop offering some features or stop producing a given model size without prior notice.
-
Page 7: Codes And Regulation
• When required to pipe to outdoor the regulator vent pipes or vent valve, it must be terminated with a downward elbow and a fine mesh screen to prevent blockage. DT Series - Installation manual (V4_2022) -
Page 8: General Information
Nagas Innovation is responsible for the conformity of the device to the codes and standards of construction in force at the time of sale. Knowledge and respect for the legal provisions as well as the standards inherent in the design, implantation, installation, commissioning, or maintenance are exclusively the responsibility of the installer or integrator. -
Page 9: Reception & Storage
Subject to the terms and conditions hereof, during the first year after the original installation of the product or eighteen (18) months from date of shipment by Nagas Innovation Inc. whichever occurs first, we will supply free of charge any component part(s) of our product found to be defective in material or workmanship (except for the heat exchanger section which carries a 5-year warranty). -
Page 10: Parts, Repairs, And Service
Only dealers or contractors who are registered with us are authorized to perform this warranty. Should the dealer or the contractor need assistance, the authorized agent for Nagas Innovation is available for support, and we, at Nagas Innovation, in turn, support our agent's efforts. -
Page 11: Normal Usage
SCFM (2,003 to 43,690 L/s) of air at temperature differential of 50°F to 120°F (28°C to 67°C). The maximum discharge temperature is limited to 130°F (55°C) at 3.00 in.w.c. (747 Pa) maximum external static pressure. The discharge temperature high limit protection is factory set at 160°F (71°C). DT Series - Installation manual (V4_2022) -
Page 12: Specifications
Ratings are based on 1000 Btu/ft for natural gas at sea level • Reduce burner capacity for altitude over 2000ft by 4% for each 1000ft above sea level • Consult factory for turndown ratio for propane gas DT Series - Installation manual (V4_2022) -
Page 13: Installation Guidelines
• Always make sure that the air used for combustion by the gas burner is clean and free of dust and corrosive particles or it could greatly reduce the service life of the unit. DT Series - Installation manual (V4_2022) -
Page 14: Typical Arrangement
Single or multiple plenum blower can be used in any configurations. For application with high air flow. Temperature rises below 60°F to reduce system pressure loss (x = fan wheel diameter) Figure 3: Single or multiple plenum blower with horizontal arrangement DT Series - Installation manual (V4_2022) -
Page 15: Installation
Depending on unit size, diameters of the flue gas connection vary between 6 and 14 inches. DT series combustion systems are designed to operate safely against a maximum back pressure of 0.25" water column with positive stock category IV type sealed corrosion resistant single wall or double wall flue vent, either in a vertical arrangement (through the roof) or in a horizontal arrangement (through the wall), or a combination of both. -
Page 16: Mounting
If you intend to suspend this equipment you must provide your own custom base mounting. DO NOT USE lifting lugs to attach hanger rods. This special installation must comply with local codes and applicable OSHA standards/requirements. DT Series - Installation manual (V4_2022) -
Page 17: Unpackaging
4.8. ELECTRICAL INSTALLATION The unit must be electrically grounded, and all wiring must be installed by a qualified electrician in accordance with the National Electrical Code (ANSI/NFPA-70) and/or the DT Series - Installation manual (V4_2022) - Page 18 WARNING! No unspecified and unapproved external load shall be added to the control transformer circuit(s) or to the main power circuit(s) without the written consent from Nagas Innovation or the warranty will be void. DT Series - Installation manual (V4_2022)
-
Page 19: Gas Piping Connection
Canada and ANSI Z223 for USA and local codes. 5. *Vent limiter factory installed. To be used in ventilated space only. In other case the regulator vent must be piped to outdoor. Use ½’’ NPT pipe tubing. DT Series - Installation manual (V4_2022) -
Page 20: Typical Gas Train
Low gas pressure switch (required for FM, IRI and pressure more than 1/2 psig) Normally open automatic vent valve (required for IRI) High gas pressure switch (required for FM, IRI and pressure more than 1/2 psig) Table 5: Typical gas train components DT Series - Installation manual (V4_2022) -
Page 21: Inlet Gas Pressure
Before turning ON the heater after an extended shutdown, make sure all the air is purged from the gas piping, and that gas pressure is adequate. A complete installation and unit inspection is recommended to make sure that everything is in order. DT Series - Installation manual (V4_2022) -
Page 22: Emergency Shutdown
See figures 4-5-6 on page 25-26 showing the recommended end cap and configurations. The exhaust pipe must end outside of the building and comply (at least but not limited to) the following clearances: DT Series - Installation manual (V4_2022) - Page 23 The horizontal conduit sections should be supported every six feet with non-combustible material such as steel chains or steel belts. Do not use the heater or the vertical conduit section as a support. DT Series - Installation manual (V4_2022)
- Page 24 CAUTION! In some conditions the heater can produce condensate. This corrosive liquid must be treated and drain correctly with provision to prevent freezing. DT Series - Installation manual (V4_2022)
- Page 25 This can also prevent proper functioning of the device and will void the warranty. Figure 4: Recommended roof top Flue Vent Exhaust and/or Combustion Air Duct DT Series - Installation manual (V4_2022)
- Page 26 Figure 5: Recommended wall horizontal Flue Vent Exhaust and Combustion Air Duct – Concentric kit Figure 6: Recommended wall vertical Flue Vent Exhaust DT Series - Installation manual (V4_2022)
-
Page 27: Start-Up Instructions
Air temperature reading device • Tachometer (Fan & motor [rpm]) • Pressure gauge o 0 - 5 in. w.c. o 0 - 20 in. w.c. • Combustion analyzer • Flat and Philips Screwdrivers • Hex Wrenches DT Series - Installation manual (V3_2020) -
Page 28: Burner Adjustment
(FLA) as indicated on burner motor name plate. • Check spark igniter electrode adjustment; check pilot flame rod adjustment. • Spark ignition electrode must be positioned and oriented as shown in figure 9 and DT Series - Installation manual (V4_2022) -
Page 29: Pilot Adjustment
11.4. COMBUSTIONS ADJUSTMENT For the combustion test, it is recommended to use a (0-10 VDC) manual potentiometer to simulate full modulation range of the burner. DT Series - Installation manual (V3_2020) - Page 30 Step 2: Combustion readings Take O and CO readings. Ideally O shall be around 5% at high fire with CO not exceeding 0.04% (400 ppm). If required, to increase or decrease O concentration, proceed as follow: DT Series - Installation manual (V4_2022)
- Page 31 WARNING! Do not adjust burner flame only visually. Using a combustion analyzer and combustion instruments is the only recommended method to adequately adjust burner combustion. DT Series - Installation manual (V3_2020)
-
Page 32: Control Sequence
3. The (PTFI) light is on during pilot ignition sequence. 4. The (FLAME) light is on only when flame safeguard relay detects a good flame signal and is not in alarm mode. 5. The (ALARM) light flashes when a malfunction is detected. DT Series - Installation manual (V4_2022) -
Page 33: Status Of Warning Lights (Fireye)
● ● GROUND FAULT ● FAULTY PROGRAMMER ● FAULTY AMPLIFIER ● Table 10: Status warning lights (Fireye) WARNING LIGHTS: ● = OFF O = ON * = FLASHING Figure 13: FIREYE flame safeguard relay DT Series - Installation manual (V3_2020) -
Page 34: Honeywell Normal Operating Sequence
NOTE: Pressing the reset button brings the flame safeguard relay back to its normal operating mode and burner will restart. Figure 14: Honeywell flame safeguard relay and keyboard module DT Series - Installation manual (V4_2022) -
Page 35: Troubleshooting Check List
Check sampling tubes of the pressure switch operation, safety contact between (installation and adjustment). 0.5''-1’’ w.c.) 6 and 8 terminals for Fireye and 6 Replace pressure switch if defective. and 7 for Honeywell relay must be Consult factory DT Series - Installation manual (V3_2020) - Page 36 Check relay electrical connections and installation CODE (5) HONEYWELL Consult factory ✓ Ground fault Check relay grounding Main current and neutral wires are inverted CODE (109) HONEYWELL Consult factory Table 11: Fireye and Honeywell troubleshooting check list DT Series - Installation manual (V4_2022)
-
Page 37: Heater Maintenance
Inspect the flame detector and pilot igniters • electrode change if necessary Clean burner fan wheel • Check burner installation and tighten screws • and bolts if required Table 12: Heater maintenance check list DT Series - Installation manual (V3_2020) -
Page 38: Start-Up Report
Low limit stat (freezestat): ______ ºF Delay when starting on low fire: ______ sec. High limit thermostat: ______ ºF Low limit delay: ______ sec. Start-up completed: If no, why? (or others): ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ DT Series - Installation manual (V4_2022) - Page 39 *This value must be as low as possible and must never exceed 400 ppm. Note ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ Signature: ________________________________________ Date: ____________________ DT Series - Installation manual (V3_2020)
- Page 40 1385, Lionel-Boulet blvd, Varennes, QC, J3X 1P7, Canada Direct line: 1-888-514-8007 Tel.: 438-338-1101 Fax.: 450-649-8756 Email: service@nagasinnovation.com Website: www.nagasinnovation.com DT Series - Installation manual (V4_2022)