Hastings IHR SERIES Manual

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. If any part is missing or damaged,
notify the carrier at once.
TABLE OF CONTENTS Page
(IH) (ISH) (H) RHF (IH) (ISH) (H) RMU and ((IH (ISH) (H) RHV Unit Dimensions..................... 1-2
(H) RHF and (H) RHV Unit Dimensions with Optional Intake and Discharge
Plenums and Curbs……………………………………………………………...........................
2-3
(H) RMU and (H) RHV Unit Dimensions with Optional Discharge
Plenums and Curbs………………………………………………………………........................
4-5
Shipping…………………………………………………………………………………………………. 5
Hoisting Unit……………………………………………………………………………………………. 5
Installation………………………………………………………………………………………………. 6
Electrical………………………………………………………………………………………………… 6
Location…………..……………………………………………………………………………………... 7-8
Gas Supply Piping……...……………………………………………………………………………… 9
Operation of Mechanical Modulating Valve…………………………………………………………. 10
Operation of Electronic Modulating Valve…………………………………………………………… 11
Maintenance…………………………………………………………………………………………… 12-13
ISIRHS-1
April 2008

(H) RMUA – (H) RHVA (H) RMUB – (H) RHVB
100 & 125
160 & 210 250 & 300 400 600 & 800 500 & 600 800 1000 & Up
A 20-15/16 31-11/16 42-7/16 55-7/8 117-7/16 42-7/16 55-7/8 117-7/16
B 24-7/16 35-3/16 45-15/16 59-3/8 120-15/16 45-15/16 59-3/8 120-15/16
C 63 67 67 70 - 97-7/16 100-7/16 -
D 23-3/16 33-15/16 44-11/16 58-1/8 - 44-11/16 58-1/8 -
E 77-1/2 84-1/2 84-1/2 87-1/2 94-19/32
114-15/16 117-15/16 125-1/32
F 99-1/2 106-1/2 106-1/2 109-1/2
116-19/32 136-15/16 139-15/16 147-1/32
G 17-3/16 27-15/16 38-11/16 52-3/16 113-15/16 38-11/16 58-3/16 113-15/16
H 3/8 3/8 3/8 3/8 1/4 3/8 3/8 1/4
J - - - - 33-1/16 - - 63-1/2
K - - - - 36 - - 36
SHIPPING
The unit is shipped by either common carrier or flat bed trailer. Consult with the factory on number of sections per
load.
1. TRUCK – The intake hood with Birdscreen is shipped in a separate crate on all Outdoor (H) RHFA, (H) RMUA,
(H) RHVA-500, 600, and 800 and Outdoor (H) RHFB, (H) RMUB, (H) RHVB-1000, 1200 and 1600
systems. Downstream heaters of all Outdoor/Indoor (IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH)
(ISH (H) RHVB-1000, 1200, and 1600 are shipped in a separate crate.
2. The remote control panel, when provided, is shipped unmounted.
HOISTING UNIT
1. The weight of the systems is shown in Table I.
TABLE I
Unit MaximumWeight,Lbs.*
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 100 1115
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 125 1155
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 160 1200
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 210 1285
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 250 1560
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 300 1625
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 400 1840
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 600 3350
(IH) (ISH) (H) RHFA, (IH) (ISH) (H) RMUA, (IH) (ISH) (H) RHVA – 800 3880
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 200 1445
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 250 1525
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 320 1610
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 420 1800
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 500 2025
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 600 2125
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 800 2545
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 1000 4520
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 1200 4800
(IH) (ISH) (H) RHFB, (IH) (ISH) (H) RMUB, (IH) (ISH) (H) RHVB – 1600 5765
*This weight is the maximum that would be encountered on the system with all available options installed. If a
specific weight is required, contact the manufacturer, or consult catalog.
2. At least four (4) lines (minimum) and suitable spreaders should be used to lift the unit, or flat platform lift with
proper lifting weight ability should be used. Unit must be slinged properly with multiple lifting points to prevent
the unit from sagging.
3. On units with either inlet or discharge plenums, or both, suitable slings must be provided for support be-
neath the unit. A minimum of four support slings are required. Additional sling supports may be needed
for long pieces of equipment.
WARNING – The mechanical or structural engineer should be contacted before moving unit across the roof deck.
5

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. Be sure frame or support is square, level and not twisted.
C. Field fabricated frame, support, or slab must be high enough to prevent any form of moisture from enter-
ing unit.
D. All joints on frame must be sealed with caulking compound.
E. Field fabricated curb should be insulated with at least 1 ½” thick rigid type insulation.
F. The roof curb should be counterflashed and sealed before unit is installed.
2. The discharge and return air duct (if required) should be correctly sized for securing to factory installed plenums,
when provided, or to unit. Duct connection(s) exposed to the weather must be watertight. A weathertight seal
must be provided where duct(s) comes through the roof.
WARNING
1. Field Installed ductwork on the unit discharge end must be secured to the flanges on the heat exchanger and
not on unit front cabinet. Failure to properly install could cause fire, explosion, damage to equipment or even
death.
2. Installer/Service Technician must remove burner tray to inspect burner assemblies, to insure proper alignment.
Disconnect gas supply line to unit gas inlet, remove the “L” locking bracket and disconnect the electrical
connections and slide the burner tray out of the heater. Once inspection is completed, replace the burner tray
assembly and install the “L” locking bracket. Failure to perform this inspection could result in fire, explosion,
loss of warranty, or even death.
Installation of this appliance must conform to applicable federal, state, and local codes and regulations, and with
guidelines established by A.G.A. (American Gas Association), NFPA (National Fire Protection Association), N.E.C.
(National Electrical Code), the National Board of Fire Underwriters and CAN/CGA B149. Listed are the codes
appearing in this text, the Associations, and their addresses where they may be obtained.
1.
The National Fuel Gas Code 2. All NFPA codes, National Electrical Code
Contact American Gas Association (Administrative) Contact: National Fire Protection Association, Inc.
1515 Wilson Boulevard Batterymarch Park
Arlington, Virginia 22209 Quincy, Massachusetts 02269
3. Standard of National Board of Fire Underwriters 4. Canadian Gas Association
Contact: National Board of Fire Underwriters Contact: Canadian Gas Association
85 John Street 178 Rexdale Boulevard
New York, New York 10036 Etobicoke, Ontario, Canada M9W 1R3
ELECTRICAL
1. Unit must be electrically grounded and all wiring must be done in accordance with applicable local codes and the
National Electrical Code.
2. In order to determine the size of the power supply lines, check the electrical specification plate located on the
unit for ampere requirements.
3. On units not ordered with a disconnect switch, it is recommended that a weatherproof disconnect switch be
mounted on or near the unit.
4. Connect power supply lines from main disconnect switch to unit disconnect switch.
5. Install thermostat (RHF and RHV only) or remote control station if supplied according to wiring diagram.
6. Thermostats and remote control stations must be installed in a suitably protected and secure location to prelude
tampering and damage. Thermostats must not be exposed to physical shocks or jarring either before or after
installation.
- 6 -

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. Refer to items 1, 2, 5, 6, 9, 10 12, 15, and 16 of INSTALLATION PRECAUTIONS.
3. REQUIRED MINIMUM CLEARANCES to combustible material are as follows:
CLEARANCES/INSTALLATION
Outdoor Models
The minimum clearances from combustible material are as follows:
Control Side – Width of Unit
Opposite Control Side – 6 inches (18” recommended for servicing)
Top of Unit – Unobstructed
Discharge and Return Air Sides – 12 inches
Bottom – 0 inches
For installation downstream from refrigeration systems.
CLEARANCES/INSTALLATIION
Indoor Models
The minimum clearances from combustible material are as follows:
Control Side – Width of Unit
Opposite Control Side – 6 inches (18” recommended for servicing)
Top of Unit – 6 inches
Discharge and Return Air Sides – 12 inches
Bottom – 0 inches
For installation downstream from refrigeration systems.
* See section on ILLUSTRATIONS for dimensions of individual furnaces.
4. Install in airplane hangars in accordance with the current ANSI/NFPA 409 - “Latest Revisions”, Standard on
Aircraft Hangars, and in public garages in accordance with the current ANSI/NFFPA BB - “Latest Revisions”,
Standards for Garages, and with CANI-B149 Codes. A clearance of 10 feet must be provided from the bottom
of the heater to the top surface of wings or engine enclosures of the highest aircraft to be housed in the hangar
and a minimum clearance of 8 feet from the door in other sections such as offices and shops connected with
hangar and in public garages. Also, the heaters must be so located that they will be protected from damage by
aircraft, cranes, scaffolding, etc., and must be accessible for servicing and adjustment. Standard ANSI/NFPA
88 - “Latest revisions” specifies that the heater must be so located that the clearance to combustible materials
conform with NFPA Nos. 52 and 54 and that such material must not attain a temperature over 160º by
continued operation of the heater.
5. If two furnaces are to be used in a side by side application, they must be installed so that the ENDS OPPOSITE
the control access doors ADJOIN.
6. A 4-inch frame is an integral part of the appliance and may be installed directly on the floor or roof or other
combustible construction. For ease of service and safe operation, however, it is suggested that the furnace be
located above the installation surface on a field fabricated base and should be high enough to prevent any form
of moisture from entering the unit.
7. Be sure that the roof joists or other obstructions will not interfere with the discharge and return air ducts.
8. The discharge and return air ducts should be correctly sized for securing to the furnace and all connections
exposed to the weather must be moisture tight. A high temperature caulking (250ºF) or sheet metal flashing
may be used for this purpose. A weathertight seal must be provided where ducts enter through the roof. Field
installed ductwork on the unit discharge end must be secured to the flanges on the heat exchanger and not on
unit front cabinet. Failure to properly install could cause fire, explosion, damage to equipment or even death.
9. Provide tight fitting inspection panels in duct work both upstream and downstream close to the furnace. These
panels must be large enough so that the heat exchanger can be easily inspected.
7

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. Positive pressure flue vent is recommended for installations inside building. Provide for the ISHRDV and
IHRDV Series. For the requirement of positive pressure flue vent, review local codes.
b. Pitch vent pipe up toward outlet, ¼” per foot for condensate drainage.
c. Type “B” gas vent is recommended for flue venting above roof lines or external wall penetrations.
d. Straight vertical runs out through the roof are preferred. Vertical stack must be a minimum of five feet
high.
e. Vertical flue stacks shall be terminated with an approved cap.
f. The maximum horizontal vent pipe length for these heaters is shown in table II. 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.
g. A gradually tapered vent pipe transition is required for (I)ISHRDV-100, (I)ISHRDV-125, and (I)ISHRDV-160
units when using 4 inch vent pipe.
h. When possible, locate horizontal vent hoods that do not face the direction of prevailing winds to diminish
the possibility of back draft situations.
i. For U.S.A. standards vent systems must conform to the latest edition of the National Fuel Gas Code
(NFPA#54) and the latest edition of NFPA #211, or as follows:
· Not less than 7 feet above grade when located adjacent to public walk ways.
· AT least 3 feet above any forced air inlet located within 10 feet.
· At least 4 feet below, 4 feet horizontally from or 1 foot above any door, window or gravity air inlet into
any building.
· At least 1 foot above grade, or at least 1 foot above the normally expected snow accumulation level.
· Directed such as to not jeopardize people.
· At least 4 feet from electric meters, gas meters, regulators and relief equipment.
· Sealing or shielding of exposed surfaces with a corrosion resistant material may be required to prevent
staining or deterioration of building materials, and
· Not less than 2 feet from an adjacent building.
j. In Canada vent systems must conform to the latest edition of the Natural gas and Propane Installation Code
(CAN/CGA-B149.1 or CAN/CGA-B149.2), or as follows:
· A venting system shall not terminate underneath a veranda, porch, or deck, or above a paved sidewalk
or a paved driveway that is located between two buildings, and that serves both buildings.
· The exit terminals of mechanical draft systems shall not be less than 2.14m above grade when located
adjacent to a paved sidewalk or driveway.
· A venting system shall not direct flue gases towards brickwork, siding, or other construction, in such a
manner that may cause damage from heat or condensate from the flue gases.
· A vent system shall not direct flue gases so as to jeopardize people, overheat combustible structures, or
enter buildings.
· A venting system shall not terminate within 1.8m of the following:
· A window, door or mechanical air supply inlet of any building, including soffit openings.
· A gas service regulator vent outlet.
· A combustion air inlet.
· A property line.
· A direction facing combustible materials or openings of surrounding buildings
· A venting system shall not terminate within 1m of the following:
· Above a gas meter/regulator assembly within 1m horizontally of the vertical centerline of the regulator.
· An oil tank or an oil tankfill inlet.
· The inside corner of an L-shaped structure.
· A venting system shall not terminate within .3m of the following:
· Above grade level or any surface that may support snow, ice, or debris.
8

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 6.0 IN 72.0 FT
Table II
Gas Supply Piping
Suggested pipe sizing for direct line from meter or propane tank is found in Table III. These sizes are based on 6” to
7” w.c. pressure at the meter for natural gas; 11” w.c. for propane gas, with .3” w.c. pressure drop schedule 40
pipe and fittings.
TABLE III
Input in 1000’s
BTU Hr.
Maximum Distance
from Meter Natural* Propane*
50 feet ¾” ½”
100 to125 100 feet 1” ¾”
60 feet 1” ¾”
150 to 175 100 feet 1 ¼” 1”
30 feet 1” ¾”
120 feet 1¼” 1”
200 to 250
250 feet 1½” 1¼”
75 feet 1¼” 1”
300 200 feet 1½” 1¼”
50 feet 1¼” 1”
400 to 420 100 feet 1½” 1¼”
35 feet 1 ¼” 1 ¼”
500 80 feet 1 ½” 1 ¼”
300 feet 2” 2”
50 feet 1½” 1¼”
600
200 feet 2” 2”
30 feet 1½” 1¼”
800 125 feet 2” 2”
80 feet 2 ” 2”
1000 200 feet 2½” 2”
50 feet 2 ” 2”
1200 150 feet 2½” 2¼”
30 feet 2 ” 2”
80 feet 2½” 2½”
1600
250 feet 3” 3”
The BTU input and output of these systems are listed in Table IV. See page 10.
*On units receiving inlet gas pressure in excess of 14” w.c., a high gas pressure regulator must be provided for
each heater section.
9