Reznor UDAP Installation & Operation Manual
  1. Manuals
  2. Brands
  3. Reznor Manuals
  4. Heater
  5. UDAP
  6. Installation & operation manual

Reznor UDAP Installation & Operation Manual

V3 series fan-type unit heaters
Hide thumbs Also See for UDAP:
Table of Contents

Advertisement

Quick Links

See also: Installation Operation & Maintenance
®
!
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.
Installation / Operation
CQS
Form I-UDA (Version B.8)
Obsoletes I-UDA (Version B.7)
Applies to: Model UDAP
and Model UDAS
Series Fan-Type
®
Unit Heaters
Form I-UDA, P/N 195673 R23, Page 1

Advertisement

Table of Contents
loading

Related Manuals for Reznor UDAP

Summary of Contents for Reznor UDAP

  • Page 1 Form I-UDA (Version B.8) Obsoletes I-UDA (Version B.7) ® Installation / Operation Applies to: Model UDAP and Model UDAS Series Fan-Type ® Unit Heaters 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

    10.3 Troubleshooting ......... 36 6. Mechanical ..........11-16 APPENDIX ............38 6.1 Gas Piping and Pressures ......11 Index ..............39 6.2 Combustion Air - Models UDAP and UDAP-CV ............16 INSTALLATION RECORD ......40 1.0 General 1.1 Hazard Labels and Notices There are warning labels on the unit and throughout this manual.

  • Page 3: General Installation Information

    50°F . The low space temperature may result in condensate forming in the heat exchanger. 1.2.1 Certification 1.2 General UDAP and UDAS Models 30, 45, 60, 75, 100, and 125 are design certified by the Cana- Installation dian Standards Association for use in residential, industrial, and commercial installa- Information tions.

  • Page 4: Warranty

    *Louver angle listed in the table is relative to the top of the heater. FIGURE 1 - Throw for Fan Models UDAP and UDAS H = Distance from bottom of heater to the floor X = Distance from heater to start of floor coverage Y = Distance to end of floor coverage **Z = point when the air velocity drops below 50 ft (15.2M) per minute...

  • Page 5: Location Recommendations

    Dimensions X, Y, and Z (feet) Model UDAP and Model UDAS with Standard Horizontal Louvers at Mounting Heights of 5 - 18 ft 5 ft -21° -20° -16° -14° -18° -14° 8 ft -39° -34° 10 18 -29° -25° -28°...

  • Page 6: Uncrating And Preparation

    Complete instructions are in this form or in the option pack- age; option packages are shipped separately. Other shipped separate items could include a vent cap (Option CC1 for UDAP); a vent/ combustion air kit (Option CC2 or CC6 for UDAS); a manual gas valve; a thermostat bracket kit;...

  • Page 7: Clearances And Dimensions

    0.45 0.35 1.05 Label color Purple Pink Purple Brown above 6000 ft Model UDAP-CV with Option AV6 for Common Venting (1830M) elevation Size 60 75 High Altitude Switch P/N 197029 197032 196362 196388 Negative Pressure OFF Setpoint "w.c. 0.60 0.45 0.55...

  • Page 8: Dimensions

    4.0 Clearances and Dimensions (cont’d) 4.2 Dimensions FIGURE 4 - Model UDAP, Power Vented Fan Model M and N - Hanger Dimensions for both 2-pt and 4-pt Suspension R - Hanger Dimension for 2-pt Suspension P and Q - Combustion...
  • Page 9 FIGURE 5 - Model UDAS, Separated Combustion Fan Model M and N - Hanger Dimensions for both 2-pt and 4-pt Suspension R - Hanger Combustion Air Connection Dimension for (For size, see Technical Data in the 2-pt Suspension APPENDIX on page 38.) P and Q - Hanger Dimensions...

  • Page 10: Hanging The Heater

    5.1 Weights Heater Before suspending the heater, check the supporting structure to be used to verify that it has sufficient load-carrying capacity to support the weight of the unit. Model UDAP Size 30 45 60 75 150 175, 200 225...

  • Page 11: Mechanical

    FIGURE 7A - Be sure the threaded hanger rods are Suspending the locked to the heater as illustrated. Heater with Rods from Length of threaded rod extending into the Threaded Nut the heater MUST NOT exceed 1/2” Retainers (either two or 3/8”...
  • Page 12 6.0 Mechanical 6.1 Gas Piping and Pressures (cont’d) (cont’d) 6.1.1 Gas Supply and Connections (cont’d) Sizing Capacity of Piping Cubic Feet per Hour based on 0.3" w.c. Pressure Drop Supply Specific Gravity for Natural Gas -- 0.6 (Natural Gas -- 1000 BTU/Cubic Ft) Line Specific Gravity for Propane Gas -- 1.6 (Propane Gas -- 2550 BTU/Cubic Ft) Length...
  • Page 13 FIGURE 9 - Gas Ground Joint Union connection is at To Gas Valve Manual shutoff (inside the the pipe nipple that cabinet) extends outside the Drip From Gas Supply (horizontal or vertical) cabinet. Pipe nipple extending outside the cabinet. Manual shutoff Illustration shows both a vertical and To Gas Valve...

  • Page 14: Gas Piping

    6.0 Mechanical is recommended rather than a spring type gauge due to the difficulty of maintaining calibration of a spring type gauge. (cont’d) 2) Open the manual valve and operate the heater. (NOTE: On Model UDAS, depress 6.1 Gas Piping and hold the door safety switch.) Measure the outlet pressure of the gas valve.

  • Page 15: High Altitude

    The input and/or the capacity of the heater changes with the derate. The tables below list inputs and capacities at altitudes from sea level to 10,000 ft (3045M). Capacity Changes BTUH Inputs and Capacities by Altitude in the UNITED STATES for Model UDAP and Model UDAS Normal Thermal Output...

  • Page 16: Combustion Air - Models Udap And Udap-Cv

    6.0 Mechanical 6.2 Combustion Air - Models UDAP and UDAP-CV (cont’d) This heater must be supplied with the air that enters into the combustion process and is then vented to the outdoors. Sufficient air must enter the equipment location to replace that exhausted through the heater vent system.

  • Page 17: Supply Wiring

    (20A @ 115V; 10A @ 230V Rating). Model UDAS supply wiring connects to leads located inside a sealed electrical box. To maintain the sealing feature of the electrical box, always replace the cover plate. Model UDAP sup- ply wiring connects directly to leads on the integrated circuit board.

  • Page 18: Wiring Diagrams

    7.0 Electrical 7.4 Wiring Diagrams Supply and FIGURE 14A - Typical Wiring Diagram for Model UDAP or Model UDAS, Wiring (cont’d) Single Stage LINE/1/60 SYSTEM TRANSFORMER FACTORY WIRING FIELD WIRING OPTIONAL FACTORY WIRING WIRE CONNECTOR SCREW NEUTRAL NEUTRAL P3-1 NEUTRAL...
  • Page 19 FIGURE 14B - Typical Wiring Diagram for Model UDAP or Model UDAS, Two Stage Gas Valve or Recirculation Form I-UDA, P/N 195673 R23, Page 19...

  • Page 20: Electrical Operating Components

    The combustion air proving switch is a pressure sensitive switch that monitors air pres- Supply and sure to ensure that proper combustion airflow is available. On Model UDAP, the switch Wiring (cont’d) is a single pole/normally open device which closes when a negative pressure is sensed in the venter housing.

  • Page 21: Controls And Operation

    Sizes 30-125 are equipped with a temperature activated manually reset flame rollout switch. The flame rollout switch is located at the top of the burner assembly. It is fac- tory set and is non-adjustable. If the setpoint is reached, the flame rollout acts to inter- rupt the electric supply to the gas valve.

  • Page 22: Ddc Controls, Options D10/D14

    8.0 Controls and Multiple Heater Control, Option CL31 and Option CL32 If the heater was ordered Operation with a multiple heater control option, one thermostat can be used to control up to six heaters. The option includes a 40VA transformer that replaces the standard trans- (cont’d) former in the “controlling”...

  • Page 23: Ignition System

    LED venter motor energized indefinitely as long as the call for heat remains and the pres- lights on Model UDAP. sure switch is open. When the pressure switch is proven closed, the control begins the prepurge time. If flame is present any time while in prepurge, the prepurge time is restarted.

  • Page 24: Ignition System

    8.0 Controls and Normal Heat Cycle Operating Sequence (cont’d) Operation 6) Post Purge - The venter motor output remains on for a 45-second post-purge period after the thermostat is satisfied. (cont’d) 7) Fan/Blower Off Delay - The fan/blower motor is de-energized after a fan/blower off 8.3 Ignition System delay (120 seconds).
  • Page 25 If a call for heat (W) occurs during continuous fan, the fan/blower will de-energize. A call for fan is ignored while in lockout. Continuous Fan Undesired Flame - If flame is sensed longer than 20 seconds while the gas valve is de-energized, the control shall energize the venter motor and fan/blower motor on heat Operation speed.

  • Page 26: Commissioning And Startup

    9.0 Commissioning 9.1 Check the installation prior to startup: and Startup  Check to be sure that all screws used to hold shipping brackets were re- installed in the heater cabinet.  Check suspension. Unit must be secure and level.  Check clearances from combustibles.

  • Page 27: Operating Sequence

    Operating Sequence 1. Set thermostat at lowest setting. FIGURE 17 - Gas Valve 2. Turn off all electric power to the appliance. 3. This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. Open the access door and locate the Top View gas control (ON/OFF) knob or switch on the gas valve.

  • Page 28: Check Installation After Startup

    Paragraph 6.2. Combustion air at the burner should be regulated only by manufacturer-provided equipment. NEVER RESTRICT OR OTHERWISE ALTER THE SUPPLY OF COMBUSTION AIR TO ANY HEATER. Model UDAP units installed in a confined space must be supplied with air for combustion as required by Code and in Paragraph 6.2 of this heater installation manual.

  • Page 29: Maintenance Schedule

    (See FIGURE 18 and Paragraphs 10.2.1 - 10.2.14.): Schedule • Clean all dirt, lint, and grease from the combustion air opening (UDAP) and venter assembly. • Clean all dirt, lint, and grease from the fan blade, fan guard, and motor.

  • Page 30: Maintenance Procedures

    FIGURE 19 - Burner Burner Body Support (at least two per unit) - Remove screw attaching to secondary air shield. Support remains attached to burner. Removal (UDAP illustrated; same process for both UDAP and UDAS) Secondary Air Shield Burner Orifice Venturi Tube Gas Valve Slide right;...
  • Page 31 With the burner assembly removed, shine a flashlight on the burner ribbons. Look for Inspect and Clean the carbon buildup, scale, dust, lint, and/or anything that might restrict flow through the Burner spaces between the burner ribbons. Holding the burner assembly so that any foreign material will fall away from the burner, use a stiff bristle brush to loosen and remove any foreign material(s).
  • Page 32 Follow these instructions for replacement of the fan guard, fan motor and/or fan blades. FIGURE 22 - Fan Blade Position on the Shaft by Unit Size and Type of Fan Guard A = Fan Spacing Setscrew UDAP/UDAS Standard Wire Fan Guard Option AZ8 Wire Fan Guard Torque Blade Size (in/lbs ±10)
  • Page 33 5. Reconnect the fan motor wires according to the wiring diagram and close the access panel. 6. Restore power to the heater and turn on the gas. Light, following the instructions on the lighting instruction plate. Check for proper operation. 10.2.6 Venter Motor Replacement Instructions and Wheel...

  • Page 34: Maintenance Procedures

    10.0 Maintenance 10.2.7 Operating Gas Valve (cont’d) and Service Single-Stage Valves (cont’d) 1/8” Outlet Two -Stage Valve Pressure Tap 1/8” Outlet 10.2 Maintenance Pressure Tap Procedures (cont’d) FIGURE 24 - Pressure Tap for Checking Gas Flow Shutoff 1/8” Outlet Pressure Tap 2) With the manual valve turned off to prevent flow to the gas valve, connect a NOTE: Operational manometer to the 1/8”...

  • Page 35: Troubleshooting

    LED is visible through viewport on Model UDAS. Remove Control Module access panel on Model UDAP. See operating sequence in Paragraph 9. (Circuit Board) Do not attempt to repair the DSI integrated control module (circuit board); the only field replaceable component is the fuse.
  • Page 36 10.3 Troubleshooting (cont’d) General Troubleshooting PROBLEM PROBABLE CAUSE REMEDY Venter motor will not 1. No power to unit. 1. Turn on power, check supply fuses or circuit breaker. start 2. No 24 volt power to integrated circuit board. 2. Turn up thermostat; check control transformer output. 3.
  • Page 37 No heat (Heater Op- 1. Incorrect valve outlet pressure or orifice. 1. Check valve outlet pressure. See Rating plate for manifold pressure. erating) 2. Cycling on limit control. 2. Check air throughput. 3. Improper thermostat location or adjustment. 3. See thermostat manufacturer's instructions. Fan or venter motor 1.

  • Page 38: Appendix

    Smaller and/or larger vent and combustion air pipe diameters may be permissible. For Model UDAS refer to the Venting Installation Manual for Separated Combustion Units. For Model UDAP refer to the Venting Installation Manual for Power Vented units. For a Model UDAP with Option AV6, refer to the Venting Installation Manual for Common Venting.

  • Page 39: Index

    Option CD 2, 3, or 4 7 Wiring Connections 17 Fan/Blower Off Delay 24 Option CK8, CK10, and CK22 11 Wiring Diagram for Model UDAP or Fan/Blower On Delay 24 Option CL31 22 Model UDAS, Single Stage 18 Fan Blades 32...

  • Page 40: Installation Record

    ________________________________________________________________________________________ BUILDING OWNER OR MAINTENANCE PERSONNEL: For service or repair • Contact the installer listed above. • If you need additional assistance, contact the Reznor Distributor listed above. ® • For more information, contact your Reznor Representative by calling 1-800-695-1901.

This manual is also suitable for:

Udas

Table of Contents