TJERNLUND UCRT Installation Instructions Manual

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TJERNLUND PRODUCTS, INC.

1601 Ninth Street • White Bear Lake, MN 55110-6794

PHONE (800) 255-4208 • (651) 426-2993 • FAX (651) 426-9547

Visit our web site • www.tjernlund.com

MODEL UCRT (UC1 with speed control)

INSTALLATION INSTRUCTIONS

THE UCRT CONTROL IS ONLY SUITABLE FOR USE WITH

TJERNLUND RT SERIES ROOFTOP DRAFT INDUCERS

Recognize this symbol as an indication of important Safety Information!

OWNER INSTRUCTIONS, DO NOT DESTROY

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED

SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND

OPERATION OF THIS PRODUCT. READ THESE INSTRUCTIONS THOROUGHLY

BEFORE ATTEMPTING INSTALLATION OR OPERATION. FAILURE TO FOLLOW

THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION, ADJUST-

MENT, SERVICE OR MAINTENANCE POSSIBLY RESULTING IN FIRE, ELECTRI-

CAL SHOCK, CARBON MONOXIDE POISONING, EXPLOSION, PERSONAL

INJURY OR PROPERTY DAMAGE.

DO NOT DESTROY. PLEASE READ CAREFULLY AND

KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

REV. A 5/11

UC1 VERSION

X.06

P/N 8504162

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Summary of Contents for TJERNLUND UCRT

Page 1 Visit our web site • www.tjernlund.com MODEL UCRT (UC1 with speed control) INSTALLATION INSTRUCTIONS THE UCRT CONTROL IS ONLY SUITABLE FOR USE WITH TJERNLUND RT SERIES ROOFTOP DRAFT INDUCERS Recognize this symbol as an indication of important Safety Information! OWNER INSTRUCTIONS, DO NOT DESTROY...
Page 2: Table Of Contents
See “Pre / Post Purge Dip Switch Settings” on page 3 for details. 3. The UCRT is intended for indoor installation only. Do not mount the UCRT on a heat source that exceeds 140 o F (60 o C).
Page 3: Uc1 Universal Control Board Features
P1 - P2 SAFETY CIRCUIT C, GND, F AUXILIARY DEVICE TERMINALS COMMUNICATION TERMINALS 1 mA @ 5VDC. 2 mA @ 5VDC. For Tjernlund MAC1E or SEE WARNING # 1. MAC4E auxiliary devices. SEE WARNING # 1. DIP SWITCH SETTINGS Pre-Purge (1-2)
Page 4: Pre / Post-Purge & Pre-Cycle Prover Status Check Settings
LED STATUS INDICATORS LED #4 & #5 (Red) Flashing Alternately = Inducer in Pre-purge. (Pre-Purge options 0, 5, 20, 35 seconds) LED #4 & #5 (Red) Flashing in Unison = Inducer in Post-Purge. (Post-Purge options 0, 30 seconds or 1, 2, 4, 8, 16 minutes) LED #4 Flashes Continuously* = Fan Prover opened for more than 10 seconds during burner cycle.
Page 5: Ucrt Installation
P1 & P2 PRE-CYCLE FAN PROVER STATUS CHECK Pre-Cycle The Pre-Cycle Prover Status Check is deactivated from the factory on the UCRT. Natural chimney Prover Status draft may be sufficient to close the PSA-1 Fan Prover contacts prior to a call for heat which may Check Deactivated 9 cause nuisance lockouts.
Page 6 The steps listed under each diagram are intended as a supplement to the diagram. Wiring colors or designations may vary by manufacturer. If you are unable to wire the UC1 as outlined in these instructions, call Tjernlund’s Customer Service Department toll free at 1-800-255-4208 for assistance.
Page 7: Inducer Ground, Motor And Prover Safety Circuit Connections
ROOFTOP INDUCER MOTOR AND COOLING FAN CONNECTIONS Connect Black and Red leads from UCRT to like colors in Rooftop Inducer whip 4x4 weatherproof junction box. Connect White wire from UCRT to White & White/Red Sriped wire in Rooftop Inducer whip 4x4 weatherproof junction box.
Page 8: Wiring To Gas Fired Appliance
4. Make sure RED voltage jumper on UC1 is on 24V. 5. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground. Important: Installer must supply overload and disconnect protection.
Page 9 4. Make sure RED voltage jumper on UC1 is on 24V or 115V depending on control voltage. 5. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground.
Page 10: Wiring To Oil Fired Equipment
4. Make sure RED voltage jumper on UC1 is on 115V. 5. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground. Important: Installer must supply overload and disconnect protection.
Page 11 4. Make sure RED voltage jumper on UC1 is on 115V. 5. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground. Important: Installer must supply overload and disconnect protection.
Page 12 5. Make sure RED voltage jumper on UC1 is on 115V. 6. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground. Important: Installer must supply overload and disconnect protection.
Page 13: Psa-1 Fan Proving Switch Adjustment
NOTE: This section is also repeated in the Rooftop Inducer instruction manual. DIAGRAM A 1. Drill an appliance draft sampling hole in the vent riser after each TJERNLUND ROOFTOP draft diverter or between the flue outlet and the draft hood / DRAFT INDUCER TJERNLUND ABD-SERIES barometric draft control of each appliance.
Page 14: Uc1 Operational Check
Extreme caution must be exercised to prevent injury. If you are unable to determine the defective part with the use of this guide, call your Tjernlund distributor or Tjernlund Products direct at 1-800-255-4208 for fur- ther assistance.
Page 15 If no faults exist, check for 115 VAC across terminals N and MTR. Voltage present: Confirm motor speed control is switched ON and check for voltage in UCRT across Red from speed control and White or Neutral. No voltage present from speed control: Replace UCRT Speed Control part number 950-8601.
Page 16: Warranty & Replacement Parts
TJERNLUND LIMITED ONE YEAR WARRANTY Tjernlund Products, Inc. warrants to the original purchaser of this product that the product will be free from defects due to faulty material or work- manship for a period of (1) year from the date of original purchase or delivery to the original purchaser, whichever is earlier. Remedies under this warranty are limited to repairing or replacing, at our option, any product which shall, within the above stated warranty period, be returned to Tjernlund Products, Inc.