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Installation and Service Manual
INDOOR/OUTDOOR SYSTEMS
Supplement to "RD" Series Rooftop
Gas Duct Furnace Manual, ISHRDV-1
Read These Instructions Before Installation
Inspect unit on arrival for any shipping damage. This unit
has been test fired for at least 15 minutes to prove out all
phases of operation. If any part is missing or damaged,
notify the carrier at once.
(IH) (ISH) (H) RHF (IH) (ISH) (H) RMU and ((IH (ISH) (H) RHV Unit Dimensions.....................
(H) RHF and (H) RHV Unit Dimensions with Optional Intake and Discharge
Plenums and Curbs................................................................................................
(H) RMU and (H) RHV Unit Dimensions with Optional Discharge
Plenums and Curbs................................................................................................
Shipping................................................................................................................
Hoisting Unit..........................................................................................................
Installation.............................................................................................................
Electrical...............................................................................................................
Location.................................................................................................................
Gas Supply Piping...................................................................................................
Operation of Mechanical Modulating Valve...................................................................
Operation of Electronic Modulating Valve.....................................................................
Maintenance.........................................................................................................
"IHR/ISHR/HR/R" SERIES
TABLE OF CONTENTS
Notice
ISIRHS-1
April 2008
Page
1-2
2-3
4-5
5
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12-13
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Table of Contents
Related Manuals for Hastings IHR SERIES
Summary of Contents for Hastings IHR SERIES
- Page 1 ISIRHS-1 April 2008 Installation and Service Manual “IHR/ISHR/HR/R” SERIES INDOOR/OUTDOOR SYSTEMS Supplement to “RD” Series Rooftop Gas Duct Furnace Manual, ISHRDV-1 Notice Read These Instructions Before Installation Inspect unit on arrival for any shipping damage. This unit has been test fired for at least 15 minutes to prove out all phases of operation.
- Page 2 "IHR/ISHR/HR/R" INDOOR/OUTDOOR Dimensions - (IH) (ISH) (H) RHF, (IH) (ISH) (H) RMU, (IH) (ISH) (H) RHV Models SYSTEMS (IH)(ISH)(H) RHFB, (IH)(ISH)(H) RMUB, (IH)(ISH)(H) RHVB 200 thru 800 (IH)(ISH)(H) RHFA, (IH)(ISH)(H) RMUA, (IH)(ISH)(H) RHVA 100 thru 400 2-1/4 2-1/4 3-1/2 3-1/2 DUCT DUCT BLOWER...
- Page 3 (IH) (ISH) (H) RHFA - (IH) (ISH) (H) RMUA (IH) (ISH) (H) RHFB - (IH) (ISH) (H) RMUB (IH) (ISH) (H) RHVA (IH) (ISH) (H) RHVB 1000 1600 1200 103-1/2 110-1/2 110-1/2 113-1/2 120-1/2 120-1/2 30-5/8 41-3/8 52-1/8 65-1/2 30-5/8 41-3/8 52-1/8 65-1/2...
- Page 4 Dimensions - Roof Curbs for Intake and Discharge Plenums. OUTLINE OF UNIT WITH PLENUMS NOTES: 1. Inlet plenum is shown for units with mixing BLOWER SUPPORT dampers. This includes louver assembly, FURNISHED FOR drain pan and fresh air intake with birdscreen. (H) RHVA 600 AND 800 For 100% return air applications, inlet plenum AND (H) RHVB-1000...
- Page 5 "HR/R" OUTDOOR SYSTEMS Dimensions - (H) RMU and (H) RHV Models with Discharge Plenums Only. FRESH AIR INTAKE REMOVABLE PANEL WITH BIRDSCREEN FOR DUCT CONNECTION AND INSPECTION OPTIONAL INTAKE DAMPER DISCHARGE AIR DUCT DUCT DUCT CONNECTION - 1" FURNACE DISCHARGE FURNACE BLOWER FLANGE TURNED UP...
- Page 6 (H) RMUA – (H) RHVA (H) RMUB – (H) RHVB 100 & 125 160 & 210 250 & 300 600 & 800 500 & 600 1000 & Up 20-15/16 31-11/16 42-7/16 55-7/8 117-7/16 42-7/16 55-7/8 117-7/16 24-7/16 35-3/16 45-15/16 59-3/8 120-15/16 45-15/16 59-3/8...
- Page 7 INSTALLATION 1. The unit may be installed on a field fabricated mounting frame or support, a factory roof curb mounting frame or a slab. The following items are important in this regard: A. Be sure that roof joist or support will not interfere with discharge and return air ducts. B.
- Page 8 LOCATION NOTE: AMERICAN INSTALLATIONS MUST CONFORM WITH THE NATIONAL FUEL GAS CODE (AMERICAN NATIONAL STANDARD ANSI Z223.1 - “Latest Revisions”) AND ALL APPLICABLE GOVERNING BUILDING CODES. CANADIAN INSTALLATIONS MUST CONFORM WITH CAN/CGA B149 - “Latest Revisions.” 1. The (I) (IS) HRDV Furnace has been designed for INDOOR OR HRDV FOR OUTDOOR INSTALLATIONS. 2.
- Page 9 Venting: 1. The (I) (IS) HRDV model furnace is equipped with a power venter and is complete as received. 2. No further venting of unit is required for outdoor installation (HRDV). 3. Venting is required on all indoor installations ISHRDV, and IHRDV units. a.
- Page 10 I(S)HRDV HORIZONTAL FLUE SIZING Unit Type Flue Pipe Diameter Maximum Length of Flue Pipe I(S)HRDV-100 4.0 IN 82.0 FT I(S)HRDV-125 4.0 IN 82.0 FT I(S)HRDV-160 4.0 IN 82.0 FT I(S)HRDV-210 6.0 IN 72.0 FT I(S)HRDV-250 6.0 IN 72.0 FT I(S)HRDV-300 6.0 IN 72.0 FT I(S)HRDV-400...
- Page 11 TABLE IV BTU/Hr. Input Total BTU/Hr. Total BTU/Hr.* Unit per Heater Input Output (IH) (ISH) (H) RHFA, RMUA, RHVA – 100 100,000 100,000 76,000 (80,000) (IH) (ISH) (H) RHFA, RMUA, RHVA – 125 125,000 125,000 95,000 (100,000) (IH) (ISH) (H) RHFA, RMUA, RHVA – 160 160,000 160,000 121,600 (128,000)
- Page 12 The 400 Model has an additional bypass without any valve control. This is called a minimum rate tube (M.R.T.). During mild weather, the modusnap valve will cycle on minimum flow while the M.R.T. is flowing gas. For its control the "DC" will cycle the main shut off valves to maintain discharge temperature. (There is no gas flow to burner when "DC"...
- Page 13 Preliminary Circuit Analysis In order to diagnose the cause of problems in this Automatic Valve Function: system, it is necessary to determine certain values. It After the electronic modulation function is tested, a is helpful to have an AC and DC voltmeter and an voltage reading must be taken across the automatic ohmmeter capable of reading 0 to 15,000 ohms.
- Page 14 FIGURE I FORCE DEFLECTION 1/64" PER INCH OF SPAN LUBRICATION INSTRUCTIONS FOR MOTORS Some small motors have sealed-for-life bearings which require no relubrication. Regreasable bearings are shipped with a high quality, wide temperature range grease in the bearings. Motors can be regreased by stopping the motor, removing drain plug and pumping new grease into fill hole. Run motor with drain plug removed until excess grease has been discharged (minimum 10 min.).
- Page 15 3606 Yost Avenue · Hastings, Nebraska 6891-1966 Phone (402) 463-9821 · Fax (402) 462-8006 www.hastingshvac.com E-mail: sales@hastingshvac.com...
- Page 16 ISHRDV-1 April 2008 Installation and Service Manual “IHRDV/ISHRDV/HRDV” SERIES INDOOR/OUTDOOR GAS DUCT FURNACE Notice Read These Instructions Before Installation Inspect unit on arrival for any shipping damage. This furnace has been test fired for at least 15 minutes to prove out all phases of operation. If any part is missing or damaged, notify the carrier at once.
- Page 17 Factory Service….………………………………………………………………………….…… ………..…Page 16 A. PURPOSE: The Hastings (I) (IS) HRDV series is a complete line of duct furnaces suitable for both INDOOR or OUTDOOR APPLICATIONS. The (I) (IS) HRDV models100-400 are design certified by A.G.A. and C.G.A. and approved for installation either upstream or downstream from cooling coils used in air conditioning systems and for applications where make-up air is specified.
- Page 18 6. The furnace must be installed downstream from or on the of the air circulating blower POSITIVE PRESSURE SIDE 7. Air flow through the furnace may be in either direction. However, on units with an air distribution baffle assembly, the air flow must enter the furnace from the baffle side.
- Page 19 Location: · NOTE: AMERICAN INSTALLATIONS MUST CONFORM WITH THE NATIONAL FUEL GAS CODE (AMERICAN NATIONAL STANDARD ANSI Z223.1 - “Latest Revisions”) AND ALL APPLICABLE GOVERNING BUILDING CODES. CANADIAN INSTALLATIONS MUST CONFORM WITH CAN/CGA B149 - “Latest Revisions.” 1. The (I) ISHRDV Furnace has been designed for INDOOR OR HRDV FOR OUTDOOR INSTALLATIONS. 2.
- Page 20 e. Vertical flue stacks shall be terminated with an approved cap. The maximum horizontal vent pipe length for these heaters is shown in table 1. A total equivalent horizontal vent pipe length can be calculated using equivalent straight pipe lengths for tees and elbows reducing the maximum horizontal vent pipe length by six feet for each sweep elbow, two and one half feet for termination tee, and ten feet for each short radius elbow.
- Page 21 · Gas Supply: NOTE: PIPING MUST CONFORM TO STANDARDS OF THE NATIONAL BOARD OF FIRE UNDER- WRITERS, CAN/CGA B149 AND ALL APPLICABLE GOVERNING CODES. INSTALL MANUAL MAIN SHUT-OFF VALVE UPSTREAM OF APPLIANCE GAS TRAIN, OUTSIDE OF THE CONFINES OF THE APPLIANCE IN ACCORDANCE WITH CURRENT INSTALLATON CODES.
- Page 22 D. ELECTRONIC IGNITION: All (I) (IS) HRDV series furnaces are equipped with a solid state design, intermittent pilot ignition system. This electronic system consists of an ignition control module, combination pilot burner/igniter-sensor (sensor or flame rod) assembly, and igniter-sensor lead. Activated by the units 24V transformer and controlled by a field installed thermostat or controller, module will first perform a safe-start check which tests its internal components for a false pilot flame condition.
- Page 23 F. TROUBLE SHOOTING: NATURE OF TROUBLE CORRECTIVE MEASURES · Pilot Fails to Light, Flame Burns Erratically , or Goes Out: 1. Improper (too high or low) gas pressure at unit. Make sure all manual gas cocks are open. Check gas pressure at main valve to be certain it conforms to MINIMUM SUPPLY PRESSURE marked on the specification plate.
- Page 24 NATURE OF TROUBLE CORRECTIVE MEASURES · Pilot Lights But Ignition Spark Continues: 1. Pilot flame does not contact flame rod sufficiently. Adjust pilot to surround end of flame rod about 3/8”. Flame must be soft and quiet. 2. Faulty flame rod, igniter lead, ground wire/connec- If a problem develops in the flame sensing circuit, pilot tions, or inoperative ignition module.
- Page 25 NATURE OF TROUBLE CORRECTIVE MEASURES 2. Main gas valve stuck in open position or inoperative Remove MV lead at ignition module. If valve does not module. close, replace valve or operator as necessary. If main gas valve and thermostat/controller are okay, replace module.
- Page 26 NATURE OF TROUBLE CORRECTIVE MEASURES 3. Blower motor cutting out on overload. Check for high or low voltage. Check for faulty motor or motor overload. 4. Inadequate air delivery from blower. See item 2 of “Insufficient Heat Delivery” in this section. 5.
- Page 27 g. Remove burner drawer assembly. To accomplish, close manual gas valve to unit and break main gas supply at union. Cut furnace electrical supply. Unscrew the two quick fasteners at the bottom of the control access panel. Pull bottom of panel away slightly and allow panel to drop. Remove panel and disconnect applicable electric wiring.
- Page 30 H. ILLUSTRATIONS: Air Flow Through Furnace With Bottom Discharge Blower With Top Discharge Blower With Vertical Discharge Blower WARNING: Air must flow evenly through the entire heat exchanger. Otherwise the bottom or tubes on one side will overheat causing damage and voiding the warranty. Heat exchanger must be installed downstream of blower.
- Page 31 Periodic service on any piece of mechanical equipment is necessary for efficient operation. If a service problem arises, Hastings HVAC, Inc. has a nationwide service organization available to provide professional assistance to help you with a solution to that problem. Two inbound Watts lines to the home offices enables you to consult with qualified factory service personnel.
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