Reznor ADFH Series Installation Manual
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Reznor ADFH Series Installation Manual

Indoor or outdoor gas, direct-fired, makeup air/heating systems
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!
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury, death, or
property damage.
Be sure to read and understand the installation, operation, and service instructions in
this manual.
Improper installation, adjustment, alteration, service, or maintenance can cause
serious injury, death, or property damage.
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use any phone in your building.
•
Leave the building immediately.
•
Immediately call your gas supplier from a phone remote from the building. Follow
the gas supplier's instructions.
•
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.
Applies to:
Indoor or Outdoor Gas, Direct-Fired,
Model ADF
Form I-ADF (12-15)
Obsoletes Form I-ADF (Version A.3)
Installation
Makeup Air/Heating Systems,
Model ADF and Model ADFH
CQS
Form I-ADF, P/N 131805 R6, Page 1

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Summary of Contents for Reznor ADFH Series

  • Page 1 Form I-ADF (12-15) Obsoletes Form I-ADF (Version A.3) Installation Applies to: Indoor or Outdoor Gas, Direct-Fired, Makeup Air/Heating Systems, Model ADF and Model ADFH Model ADF WARNING: FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury, death, or property damage.

  • Page 2: Table Of Contents

    Table of Contents 1.0 General ............2 6.0 Mechanical ........... 9 1.1 Hazard Labels and Notices ......2 6.1 Gas Piping and Pressures ......9 1.2 General Description ........3 6.2 Unit Inlet Air ...........11 1.3 Warranty ............3 6.3 Supply Air Discharge ........18 1.4 Installation Codes ..........3 6.4 Blowers, Drives, and Blower Motors ...19 2.0 Location ............

  • Page 3: General Description

    1.2 General The information in this manual applies to Model ADF and Model ADFH in Sizes 300, 500, 700 and 1200. Both Model ADF and ADFH are direct-fired makeup air heating Description systems. Model ADFH is designed with a high discharge air temperature. These systems consist of a direct-fired, gas-fueled burner and a draw-through blower housed in a weatherized cabinet.

  • Page 4: Uncrating And Preparation

    Preparation Check for any damage that may have been incurred during shipment. If damage is found, document the damage with the carrier and immediately contact an authorized Reznor distributor. ® Check the gas specifications and electrical voltage (system rating plate is in the control compartment) to be sure that they agree with the utilities at the installation site.
  • Page 5 Dimensions (mm) - Illustration in FIGURE 1A (Sizes 300 & 500) Horizontal Discharge Vertical** Discharge ** Models ADFH 300/500 Models have a motor compartment ADF300 ADF500 ADF300 ADF500 ADFH300 ADFH500 required for high 1213 1213 1213 1138 1138 1138 temperature discharge. 2180 2180 2180...
  • Page 6 4.2.2 Dimensions of Models ADF/ADFH Sizes 700 and 1200 4.0. Clearances Dimensions (inches) - FIGURE 1B Dimensions (mm) - FIGURE 1B Dimensions Horizontal Horizontal Vertical Discharge Vertical Discharge (cont'd) Discharge Discharge Mod- ADF/ ADF/ ADF/ ADF/ Models 4.2 Dimensions ADFH ADFH ADFH ADFH...

  • Page 7: Mounting

    5. Mounting Mounting is the responsibility of the installer. Depending on the building and its use, determine whether or not additional field measures should be taken to reduce the effect of blower vibration and/or noise. Determining the need for and installing vibration isolation is the responsibility of the installer. When selecting a location for an outdoor installation, position the unit so that the air inlet will NOT be facing into the prevailing wind.

  • Page 8: Mounting On A Roof Curb

    5.0 Mounting FIGURE 3 - Cross Support Mounting Requirements (cont'd) 5.3 Mounting on Field-Supplied Supports Field Field Supplied Supplied (cont'd) Duct Duct 4 x 4 Treated Lumber = support location 5.4 Mounting on a CAUTION: Before assembly, re-check to be sure that the correct Roof Curb curb has been ordered.

  • Page 9: Mechanical

    Bottom (Vertical) Duct If the system being installed has a vertical discharge, the duct opening has flanges for connection to field-installed ductwork. See FIGURE 5 for duct opening and spacing in Connections relationship to currently manufactured Reznor roof curbs. ® 1-7/8 (48)
  • Page 10 6.0 Mechanical 6.1 Gas Piping and Pressures (cont'd) (cont'd) Gas Supply Piping Capacity of Piping Cubic Feet per Hour based on 0.3" w.c. Pressure Drop Specific Gravity for Natural Gas -- 0.6 (Natural Gas -- 1000 BTU/Cubic Ft) Specific Gravity for Propane Gas -- 1.6 (Propane Gas -- 2550 BTU/Cubic Ft) Diameter of Pipe Length 3/4"...

  • Page 11: Unit Inlet Air

    Pilot Supply Pressure These systems are designed to operate on a natural gas pilot supply pressure of 3.5" w.c. or a propane gas pilot supply pressure of 6" w.c. Measure both operating pressure and pilot supply pressure with the blowers in operation.
  • Page 12 103774 100230 100237 103776 illustration for P/N's. 700 & 1200 100232 100239 103778 NOTE: Either a Reznor ® Right Side Panel, P/N 100216 designed optional air inlet Factory-assembled Louver hood or evaporative cooling Left Side Assembly including Moisture Panel, module is required on outdoor...
  • Page 13 Instructions for installing pre-assembled outside air hood with filters: FIGURE 9A - Optional 1. On the inlet air end of the system, remove the row of factory-installed screws Screened Outside Air attaching the cabinet top. Hood with Filters 2. Tip the assembled air hood slightly and slide the top flange underneath the cabinet Factory assembled and top.
  • Page 14 6.0 Mechanical 3. Re-insert all of the screws across the top of the cabinet. 4. The filter cabinet should be resting on the factory-installed support angle across (cont'd) the bottom of the cabinet. If the cabinet does not rest tightly against the support 6.2 Unit Inlet Air angle, follow these instructions to adjust the position of the support angle: a) Slightly loosen (do not remove) the support angle screws.
  • Page 15 FIGURE 12 - Optional an adjustable base, and the transition ductwork between the cooling module and the Evaporative Cooling cabinet. Complete installation instructions including dimensions are packaged with the Module on an ADF/ evaporative cooling module package. Included in the cooling module installation ADFH 700 or 1200.
  • Page 16 Supply and Drain Water Connections (cont'd) 6.0 Mechanical All Cooling Modules - A manual water shutoff should be installed upstream of the (cont'd) inlet, at a convenient non-freezing location, to allow the water supply to be turned on and off. If necessary, install a bleed line between the manual valve and the cooling 6.2 Unit Inlet Air module inlet to allow drainage of the line between the shutoff valve and the cooling (cont'd)
  • Page 17 Filling & Adjusting Float and Pump Control System -- Turn on the water supply. Check for good flow. the Water Level in the When the float valve (FIGURE 13) shuts off the water supply, measure the water depth. The depth of the water should be approximately 3". It may be necessary to Reservoir adjust the float valve to obtain the proper water level or to free the float valve from FIGURE 16 - Disconnect...

  • Page 18: Supply Air Discharge

    6.0 Mechanical 6.3.1 Distribution of Makeup Air Makeup air can be introduced to the building either through distribution ducts or through (cont'd) controlled pressurization with little or no ductwork. Makeup air should be introduced and maintained using the lowest possible air velocity. With ductwork distribution, this 6.3 Supply Air is accomplished using a multiplicity of discharge openings over the greatest centerline Discharge...

  • Page 19: Blowers, Drives, And Blower Motors

    6.4 Blowers, Drives, Check belt tension. Proper belt tension is important to the long life of the belt and motor. and Blower A loose belt will cause wear and slippage. Too much tension will cause excessive motor and blower bearing wear. If adjustment is required, adjust belt tension by means Motors of the adjusting screw on the motor base until the belt can be depressed 1/2"...

  • Page 20: Control Wiring

    7.0 Electrical and CAUTION: Supply voltage and 24-volt control wiring cannot be Wiring (cont'd) installed in the same conduit. Maxitrol systems will be adversely 7.2 Supply Wiring affected if control wiring is in conduit with supply voltage wiring. If (cont'd) required, field-supplied wiring between any Maxitrol components must be completed with shielded wiring.

  • Page 21: Controls

    Dirty Filter Light When a console with a dirty filter indicator is selected, the remote console includes a fourth light (dirty filter indicator light). The light is activated by an adjustable, single- (on the Remote pole/normally open differential pressure switch that senses air pressure across the filter Console) bank.

  • Page 22: Commissioning And Startup

    8.0 Controls temperature of the incoming outside air. The outside air cutoff (high ambient control) is factory set at 60°F (adjustable 25-250°F). The burner reacts differently depending on (cont'd) the entering air temperature and the setting on this control. The burner -- •...
  • Page 23 Check disconnect switch to be sure that it is tightly secured against the cabinet. If disconnect is fusible, check that fuses are installed. If fuses are not installed, insert correct fuses. Verify continuity of fuses. 6. Open the hinged gas/electrical control compartment door -- Close all manual gas valves.

  • Page 24: Startup

    9.0 Commisoning 1. Prepare system for startup testing -- □ and Startup Attach a slope gauge (0 to 1.0" scale) to the tubing connections in the control compartment. The two connections are located just left of the electrical box. (cont'd) Remove the caps on the 1/8"...
  • Page 25 If the slope gauge reading is greater than -.25" (such as -.10" If the slope gauge reading is less than -.75" (such as -1.0" w.c.), adjust the drive to increase the blower speed. w.c.), adjust the drive to decrease the blower speed. (1) Turn disconnect switch OFF.

  • Page 26: Startup For Continuous Operation

    9.0 Commissioning 6. Check pilot pressure and operation -- To check pilot gas pressure, connect a "U"-tube manometer to the pressure tap on and Startup the downstream side of the pilot solenoid valve. (cont'd) Put BOTH blower and burner switches in TEST position. Turn ON disconnect switch.

  • Page 27: Index

    Limits Based on Eight -Hour Exposure and a 5-Day Week (Guide Only) Substance ....Percent..PPM Substance ....Percent..PPM Acetaldehyde ...001 ....10 Formaldehyde ..000025 ..0.25 Carbon Dioxide ..250 ..2500 Nitrogen Dioxide ..0001 ....1 Carbon Monoxide..

  • Page 28: Installation Record

    INSTALLATION RECORD - to be completed by the Installer: Installer: Name ________________________________________________________ Company ________________________________________________________ Address ________________________________________________________ ________________________________________________________ ________________________________________________________ Phone _________________________________ Distributor (company from which the unit was purchased): Company ________________________________________________________ Contact ________________________________________________________ Address ________________________________________________________ ________________________________________________________ ________________________________________________________ Phone _________________________________ Model ________________ Serial No.______________________________Date of Installation ____________ SPECIFIC INSTALLATION NOTES: (i.e.

This manual is also suitable for:

Adf300Adf seriesAdfh300Adfh500Adf500

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