Granby KHM SERIES Nstallation, Operation And Service Manual
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Granby KHM SERIES Nstallation, Operation And Service Manual

Khm series 85%+ efficiency oil fired hi-boy furnace
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See also: Installation, Operation and Service Manual
Installation, Operation and
KHM
85% + EFFICIENCY
OIL FIRED HI-BOY FURNACE
KHM-100
KHM-200
INSTALLATIONS MUST MEET ALL LOCAL AND FEDERAL
CODES THAT MAY DIFFER FROM THIS MANUAL
Please read the manual in its entirety before beginning installation.
This manual must be kept with the furnace for future reference.
GRANBY FURNACES INC.
PO Box 637
12118 Hwy 209
Parrsboro Nova Scotia Canada
B0M 1S0
902-254-2543
www.granbyindustries.com
Service Manual
SERIES
01-30-2014
KHM-100 Illustration
G2012-E2 Rev. F

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  • Page 1 CODES THAT MAY DIFFER FROM THIS MANUAL Please read the manual in its entirety before beginning installation. This manual must be kept with the furnace for future reference. GRANBY FURNACES INC. PO Box 637 12118 Hwy 209 Parrsboro Nova Scotia Canada...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS IMPORTANT SAFETY ADVICE PRODUCT INFORMATION FURNACE INSTALLATION ACCESSORY INSTALLATION BURNER INSTALLATION AND SPECIFICATIONS 5.1 ASSEMBLY & INSTALLATION OF BURNER 5.2 SET BURNER FOR EFFICIENT OPERATION 5.3 TECHNICAL INFORMATION FURNACE OPERATION AND SETTINGS 6.1 BLOWER SETTING 6.2 FAN TIMER CONTROL BOARD (ST9103 A 1028) 6.3 ST9103 A 1028 CONTROL BOARD SEQUENCE 6.4 SERVICING –...

  • Page 3: Important Safety Advice

    1.0 IMPORTANT SAFETY ADVICE Please read and understand this manual before installing, operating or servicing the furnace. To ensure you have a clear understanding of the operating procedures of the appliance please take the time to read the IMPORTANT SAFETY ADVICE section of this manual.

  • Page 4: Product Information

    2.0 PRODUCT INFORMATION CLEARANCE (minimum) TO COMBUSTIBLES UPFLOW POSITION Top & Sides of Supply Plenum 1” (25 mm) Front (Maintenance) 24” (610 mm) Rear 0” (0 mm) First Side 0” (0 mm) Other Side 0” (0 mm) Flue Pipe 9” (229 mm) Floor Combustible...
  • Page 5 25” x 20” x 2” non-pleated UL approved A/C COIL LOCATION Minimum height above the heat exchanger 6” (152 mm) See A/C Coil Manufactures Requirements SMOKE-PIPE CONNECTION 5” Chimney or direct vent DVS Granby kit CLEANOUTS Front Cover & Burner Opening THERMOSTAT Any thermostat FUEL Not heavier than No.
  • Page 6 KHM-100 - DIMENSIONS Dimensions are in inches KHM-200 - DIMENSIONS Dimensions are in inches...

  • Page 7: Furnace Installation

    3.0 FURNACE INSTALLATION OIL TANK & PIPING Tank installation must conform to local requirements. Install according to the applicable code such as CSA B139 and NFPA 31. Minimize the number of connections in suction line and make all connections as tight as possible. Use a pipe joint compound suitable for oil on all pipe threads.
  • Page 8 PLACEMENT & VENTING Furnace installation shall conform to the required installation code for oil-fired equipment (USA: NFPA 31, Canada: CSA B139). FLOOR SUPPORT COMBUSTIBLE – If required, support furnace on five (5) concrete blocks. Make sure the center of the furnace base is supported. Approved for installation on combustible floors in the upflow position and downflow position (with the optional sub-base).
  • Page 9 MULTI-POSITION CONFIGURATIONS UPFLOW INSTALLATION DOWNFLOW INSTALLATION AIR RETURN Filter WARM AIR Filter Downflow Sub-base AIR RETURN WARM AIR The return air opening can be located When the unit is installed in downflow on left side or on the right side of the configuration on a combustible floor, the unit.

  • Page 10: Accessory Installation

    4.0 ACCESSORY INSTALLATION BLOCKED VENT SWITCH (BVSO) FOR CANADIAN APPLICATION ONLY Oil-fired appliances installed in Canada require a blocked vent switch system when installed on a chimney. A safety switch is included with the furnace to perform this function. It is the installer’s responsibility to install the switch in accordance with the instructions provided.
  • Page 11 System Test Procedure (BVSO) 1) With the power re-established, block the chimney or vent pipe downstream of the switch. 2) Adjust the thermostat to call for heat. 3) Once the heating system has started the blocked vent switch should shut down the burner within 10 minutes or sooner.
  • Page 12 AIR FILTER RACK INSTALLATION The air filter rack is shipped uninstalled inside the furnace. This way the owner can install it in the position that he wants. There are 3 possible locations to install the air filter rack which are: bottom left side, bottom right side and under the furnace.
  • Page 13 Step 5: Remove the 4 knockouts on the panel (left side, right side or base panel) where you want to install the air filter Step 6: Cut the panel between the 4 knockouts. Step 7: Using 8 screws ,install the air filter rack on the furnace. Step 8: Slide the air filter inside the air filter rack...

  • Page 14: Burner Installation And Specifications

    5.0 BURNER INSTALLATION AND SPECIFICATIONS 5.1 ASSEMBLY & INSTALLATION OF BURNER ASSEMBLE Check burner model is correct for furnace rating required. Assemble as per burner manufacturer’s instructions. SELECT NOZZLE Select oil input, nozzle and burner configuration as shown on furnace operating decal.

  • Page 15: Set Burner For Efficient Operation

    5.2 SET BURNER FOR EFFICIENT OPERATION BURNER SETTINGS Use burner settings in the table on page 16 or operating decal as a guide to set burner, particularly for nozzle change. Those settings are only starting points for the adjustments and are not meant as final settings.
  • Page 16 DRAFT PRESSURE Using an accurate draft meter; adjust the draft control to obtain - 0.01” wc minimum draft pressure at the breech sampling hole. The draft regulator’s adjustments should be made after furnace has been running under heating mode for at least five (5) minutes minimum. COMBUSTION TEST All your tests must be done with the burner cover on (Riello) COMBUSTION...

  • Page 17: Technical Information

    5.3 TECHNICAL INFORMATION KHM Series KHM-100 KHM-200 Riello Burner KHM-E1-*067- KHM-E1-*079- KHM-E1-*091- KHM-E3-*109- KHM-E3-*127- KHM-E3-*139- Unit Model Firing Rate (USGPH) 0.55 0.65 0.75 0.90 1.05 1.15 Input (BTU/h) 77,000 91,000 105,000 126,000 147,000 161,000 Output (BTU/h) 67,000 79,000 91,000 109,000...

  • Page 18: Furnace Operation And Settings

    6.0 FURNACE OPERATION AND SETTINGS SHUTTING FURNACE DOWN POWER OFF Turn off main power breaker or disconnect. FUEL OFF Shut off manual fuel supply valve. Always keep manual fuel supply valve shut off if the burner is shut down for an extended period of time.
  • Page 19 o “FAN OFF” Dip Switches adjustment Dip Switches COMFORT ADJUSTMENTS o Outlet air consistently too warm or too cold - change the blower motor speed to give the specified air temperature rise. o Outlet air gets too warm and burner shuts down - increase air by changing the blower motor speed to give the specified temperature rise.

  • Page 20: St9103A 1028 Control Board Sequence

    6.3 ST9103A 1028 CONTROL BOARD SEQUENCE ST9103 Heating Sequence 1) Thermostat calls for Heat. 2) Burner starts 3) Blower starts after 45 seconds 4) Burner shuts down after call for heat is satisfied 5) Blower stops according to adjusted (FAN OFF) Dip switch selection ST9103 Cooling Sequence 1) Thermostat calls for cooling 2) Blower starts immediately...

  • Page 21: Servicing - Fan Timer St9103A 1028

    6.4 SERVICING - FAN TIMER ST9103A 1028 Trouble shooting the electronic board ST 9103 Before trouble shooting the board, check for the 5 amp. fuse For accurate trouble shooting, follow step by step the Trouble Shooting Chart. Step Possible Cause Check-out procedure Corrective action No Heat...
  • Page 22 Step Possible Cause Check-out procedure Corrective action No Heat Check for 120 Volts on the Yes - Move to next step Riello burner black wire, contact (COM) No - Back to step # 4 or check for bad application on the burner activation connection relay.

  • Page 23: Service

    Step Possible Cause Check-out procedure Corrective action No Cooling Yes - Move to next step Check for 24 Volts between Blower No - Check thermostat and wiring; if it's G and C on electronic fan High speed OK, then change the electronic fan control control Check for 120 Volts at the...
  • Page 24 CHANGING NOZZLE It is recommended that the nozzle be replaced once a year. If a new nozzle of a different size is installed, change the blower speed according to section BURNER INSTALLATION AND SPECIFICATIONS (see table at page 16) or operating decal as required CLEANING HEAT EXCHANGER Heat exchanger must be inspected every heating season.
  • Page 25 BLOWER REMOVAL This furnace has a blower sealing system, which is designed to be tight and rattle free. Refer to the instructions and pictures below. 1) Shut off oil and power to furnace. 2) Remove the two (2) screws securing the blower door (Figure 3) Open blower compartment...

  • Page 26: Electrical / Wiring Diagrams

    8.0 ELECTRICAL / WIRING DIAGRAMS HEATING & COOLING...

  • Page 27: Heating / Cooling - Beckett Burner

    HEATING & COOLING...
  • Page 28 GeniSys control schematic with the ST9103 Board...

  • Page 29: Heating Only (2 Wires Thermostat)

    HEATING ONLY (2 WIRES THERMOSTAT)

  • Page 30: Exploded Parts View

    9.0 EXPLODED PARTS VIEW KHM-100 – Exploded Parts View...
  • Page 31 KHM-100 – Part List ITEM PART NUMBER DESCRIPTION CAB-A0-0019-00 Left Panel Assembly CAB-A0-0020-00 Right Panel Assembly CAB-A0-0018-00 Rear Panel Assembly CAB-A0-0016-00 Blower Panel Assembly CAB-A0-0021-00 Front Panel Assembly CAB-A0-0022-00 20’’ x 20’’ Filter Holder Assembly CAB-P0-0045-00 Base Panel CAB-P0-0052-00 Front Door Panel CAB-P0-0051-00 Blower Door Panel 3HN-00-PULL-00 Handle Flush Pocket Pull HEX-A0-0009-00 Heat Exchanger Assembly...

  • Page 32: Khm-200

    KHM-200 – Exploded Parts View...
  • Page 33 KHM-200 – Part List ITEM PART NUMBER DESCRIPTION CAB-A0-0027-00 Left Panel Assembly CAB-A0-0028-00 Right Panel Assembly CAB-A0-0026-00 Rear Panel Assembly CAB-A0-0024-00 Blower Panel Assembly CAB-A0-0029-00 Front Panel Assembly CAB-A0-0030-00 20’’ x 25’’ Filter Holder Assembly CAB-P0-0061-00 Base Panel CAB-P0-0065-00 Front Door Panel CAB-P0-0051-00 Blower Door Panel 3HN-00-PULL-00 Handle Flush Pocket Pull HEX-A0-0011-00 Heat Exchanger Assembly...

  • Page 34: Start-Up Test Results

    10. START-UP TEST RESULTS Model: Serial Number: Unit configuration: Upflow____ Downflow_____ Horizontal left_____ Horizontal right_____ Date of installation: Installer (name & address): START-UP TEST RESULTS Size of unit (Btu/h): Nozzle: Oil Pressure (psi): Chimney____________ Direct vent system (DVS) ____________ Burner adjustments: RIELLO F3___ BF3___ RIELLO F5___ BF5___ BECKETT AFG LII___ BECKETT AFG F3___ Turbulator: ______...
  • Page 35 TEST PROCEDURES External Total Static Pressure Reading A/C Coil Total Resistance Reading Coil Pressure (Pc) - Supply Pressure (Ps) Supply Pressure (Ps) + Return Pressure (Pr) Temperature Rise Reading *** Supply Temp. (Ts) - Return Temp. (Tr) *** Probe must not be in direct sight of heat exchanger.
  • Page 36 Granby Furnaces Inc. manufactures a full line of oil-fired furnaces in its 70,000 square feet facility. Granby products are sold across Canada and the United States through a distribution network. Our team of engineers, designers and technicians continually research and develop products to go beyond the demanding specifications of today’s certifications.

This manual is also suitable for:

Khm-100Khm-200

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