Tjernlund Mac-4 control (discontinued) 8504088 rev a... User manual

MODEL

MAC-4

MULTIPLE APPLIANCE CONTROL

REV. A 4/00

OWNER INSTRUCTIONS, DO NOT DESTROY

Recognize this symbol as an indication of important Safety Information!

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED

SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND

OPERATION OF THIS UNIT. 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, OR PERSONAL

INJURY OR PROPERTY DAMAGE.

PLEASE READ CAREFULLY AND KEEP ON JOB

SITE FOR FUTURE REFERENCE.

For Interlocking Power Venters, Draft Inducers

IN-FORCERS or Dampers with up to four burners

TABLE OF CONTENTS

Cautions ..........................................................................................................................................................................1

Electrical Wiring

Electrical Specifications & Circuit Board Features .....................................................................................................1

Wiring to 24V Gas Equipment ...............................................................................................................................2, 3

Wiring to 115V Gas Equipment ..............................................................................................................................4, 5

Wiring to Millivolt Gas Equipment ..............................................................................................................................6

Wiring to Oil Equipment .....................................................................................................................................6, 7, 8

Safety Interlock Test ........................................................................................................................................................9

Replacement Parts & Warranty.......................................................................................................................................9

DESCRIPTION

The MAC-4 is used for wiring up to 4 heating appliances with Draft Inducers, Power Venters, IN-FORCERs or 115V Dampers. It is

suitable for any combination of 24 VAC and 115 VAC control systems for gas and oil burners.

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

CAUTIONS

1. Failure to install, maintain and/or operate the MAC-4 in accordance with manufacturer’s instructions may result in conditions that

can produce bodily injury and property damage.

2. The safety interlock and system operation performance checks must be performed on each appliance interlocked with the

MAC-4 in accordance with the Power Venter, Draft Inducer, IN-FORCER or Damper installation instructions.

ELECTRICAL

All wiring from the MAC-4 to the appliance must be appropriate Class 1 wiring as follows: installed in rigid metal conduit, intermediate conduit,

rigid non-metallic conduit, electrical metallic tubing, Type MI Cable, Type MC Cable or be otherwise suitably protected from physical damage.

The disconnect means and circuit protection are to be provided by the installer of this device.

SEQUENCE OF OPERATION OF MAC-4 INTERLOCKED WITH 24 VAC & 115 VAC APPLIANCE CONTROL CIRCUITS

The circuit board of the MAC-4 is designed for a simple three wire interlock with up to four separate burners. Upon a call for heat the “hot”

leg of the burner circuit is intercepted and routed to the MAC-4 terminal strip. When the MAC-4 is activated, the power venter, draft inducer,

IN-FORCER or damper starts. The proving switch makes and the intercepted “hot” leg is returned to the burner circuit, allowing the burner to fire.

ELECTRICAL SPECIFICATIONS TABLE

APPLIANCE # 1 INTERLOCK (J1B)

Terminal 1: 18-130 VAC intercepted

“hot” From Gas Valve or Burner Motor

Terminal 2: Neutral Return

Terminal 3: Used for special applica-

tions. Contact Factory for Diagram.

Terminal 4: Proven Hot Back to Gas

Valve or Burner Motor

1 HP MAX LOAD Terminals 3 & 4

NOTE:

Terminals 1 - 4 are the same for

Appliances 1, 2, 3 & 4 APPLIANCE # 3 INTERLOCK (J3B)

NOTE: Terminals 1-4 are in the reverse

order from Appliances 1 & 2.

1 HP MAX LOAD Terminals 3 & 4

APPLIANCE # 4 INTERLOCK (J4B)

NOTE: Terminals 1-4 are in the reverse

order from Appliances 1 & 2.

1 HP MAX LOAD Terminals 3 & 4

PROVER (J5)

5 VDC Output to Fan Prover Switch.

5 VDC Board Generated Power.

DO NOT SUPPLY POWER TO

PROVER CONTACTS!

115 VAC POWER SUPPLY (J7)

115 VAC Input From Disconnect Switch.

MOTOR LOAD (J6)

115 VAC Output to Mechanical

Draft or Combustion Air Motor(s)

1 HP MAX LOAD.

APPLIANCE # 2 INTERLOCK (J2B)

1 HP MAX LOAD Terminals 3 & 4

MAC-4 CIRCUIT BOARD FEATURES

Disconnect electrical power to this control and to the heating appliances is serves before servicing.

Do not connect electrical power to prover block. Doing so will damage the MAC-4.

Do not connect more than one appliance to each appliance block. Doing so will damage the MAC-4.

MAC-4 WIRED WITH 24V GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER WITH A 950-1067 POST-PURGE TIMER/RELAY

(VENTER MOTOR LESS THAN 4.4 AMPS)

MAC-4 WIRED WITH 24V GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER (MOTOR LOAD UP TO 1 H.P.)

MAC-4 WIRED WITH 24V GAS APPLIANCES AND MULTIPLE TJERNLUND POWER VENTERS,

DRAFT INDUCERS OR IN-FORCERS (IF INDIVIDUAL OR COMBINED MOTOR LOAD EXCEEDS 1 H.P.,

SEE DIAGRAM ABOVE FOR EXAMPLE OF ISOLATION RELAY WIRING)

MAC-4 WIRED WITH 24V GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER OR IN-FORCER (MOTOR LOAD GREATER THAN 1 H.P.)

MAC-4 WIRED WITH 115V GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER WITH A 950-1067 POST-PURGE TIMER/RELAY

(VENTER MOTOR LESS THAN 4.4 AMPS)

MAC-4 WIRED WITH 115V GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER (MOTOR LOAD UP TO 1 H.P.)

MAC-4 WIRED WITH 115V GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER OR IN-FORCER (MOTOR LOAD GREATER THAN 1 H.P.)

MAC-4 WIRED WITH 115V GAS APPLIANCES AND MULTIPLE TJERNLUND POWER VENTERS,

DRAFT INDUCERS OR IN-FORCERS (IF INDIVIDUAL OR COMBINED MOTOR LOAD EXCEEDS 1 H.P.,

SEE DIAGRAM ABOVE FOR EXAMPLE OF ISOLATION RELAY WIRING)

MAC-4 WIRED WITH OIL-FIRED EQUIPMENT AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER (MOTOR LOAD UP TO 1 H.P.)

MAC-4 WIRED WITH MILLIVOLT GAS APPLIANCES AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER (MOTOR LOAD UP TO 1 H.P.)

MAC-4 WIRED WITH OIL-FIRED EQUIPMENT AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER, IN-FORCER OR 115V DAMPER WITH A 950-1067 POST-PURGE

TIMER/RELAY (VENTER MOTOR LESS THAN 4.4 AMPS)

WARNING

REMOVE FACTORY-

INSTALLED JUMPER

ON SS1 OR SS2

MAC-4 WIRED WITH OIL-FIRED EQUIPMENT AND TJERNLUND SIDESHOT MODEL SS1 OR SS2

MAC-4 WIRED WITH OIL-FIRED EQUIPMENT AND MULTIPLE TJERNLUND POWER VENTERS

DRAFT INDUCERS OR IN-FORCERS (IF INDIVIDUAL OR COMBINED MOTOR LOAD EXCEEDS 1 H.P.,

SEE DIAGRAM ON BOTTOM OF PAGE 7 FOR EXAMPLE OF ISOLATION RELAY WIRING)

MAC-4 WIRED WITH OIL-FIRED EQUIPMENT AND ONE TJERNLUND POWER VENTER,

DRAFT INDUCER OR IN-FORCER (MOTOR LOAD GREATER THAN 1 H.P.)

SAFETY INTERLOCK TEST

1. Adjust each individual appliance thermostat or aquastat to call for heat.

2. Determine that the Power Venter, Draft Inducer or IN-FORCER operates before the gas valve or burner motor becomes energized.

3. Disconnect main power to MAC-4 board.

4. Remove connection to terminal 2 on Prover terminal block (J5). This will open circuit to the Prover(s) and interrupt the 5 VDC

supplied by the MAC-4 board. Reestablish power to MAC-4 board which was disconnected in Step 3.

5. Adjust each individual appliance thermostat or aquastat to call for heat. The Power Venter, Draft Inducer or IN-FORCER motor

should turn on but the appliance gas valve or burner motor should not be energized with the prover(s) circuit disconnected.

DONOT OPERATE AN APPLIANCE THAT OPERATES WITH THE PROVER CIRCUIT DISCONNECTED!

6. Reconnect the Prover(s) circuit to terminal 2 on Prover terminal block (J5). Repeat steps 1 and 2 above.

Follow Power Venter or Draft Inducer instruction guidelines on combustion air testing.

LIMITED PARTS WARRANTY AND CLAIM PROCEDURE

Tjernlund Products, Inc. warrants the components of its products for one year from date of installation. This warranty covers defects

in material and workmanship. This warranty does not cover normal maintenance, transportation or installation charges for replace-

ment parts or any other service calls or repairs. Products that are tampered with, damaged, or defective due to malfunctioning appli-

ances are not covered under this warranty. This warranty DOES NOT cover the complete MAC-4 if it is operative, except for the

defective part.

Tjernlund Products, Inc. will issue credit or provide a free part to replace one that becomes defective during the one year warranty peri-

od. If the part is over 18 months old, proof of date of the installation in the form of the contractor sales/installation receipt is necessary

to prove the unit has been in service for under one year. All receipts should include the date code of the MAC-4 to ensure that the defec-

tive component corresponds with the complete unit. This will help preclude possible credit refusal.

1.) If unable to determine faulty component, contact your Tjernlund distributor or Tjernlund Products Technical Customer Service

Department at 1-800-255-4208 for troubleshooting assistance.

2.) After the faulty component is determined, return it to your Tjernlund distributor for replacement. Please include MAC-4 date

code component was taken from. If MAC-4 date code is older than 18 months you will need to provide a copy of the original instal-

lation receipt to your distributor. Credit or replacement will only be issued to a Tjernlund distributor after the defective part has been

returned prepaid to Tjernlund.

REPLACEMENT PARTS COVERED BY WARRANTY

MAC-4 Circuit Board only 950-0489

WHAT IS NOT COVERED

Product installed contrary to our installation instructions

Product that has been altered, neglected or misused

Product that has been wired incorrectly

Any freight charges related to the return of the defective part

Any labor charges related to evaluating and replacing the defective part

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 workman-

ship for a period of (1) year from the date of original purchase or delivery to the original purchaser, whichever is earlier. Remedies under this war-

ranty 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. at the address listed below, postage prepaid. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON

THE FACE HEREOF, AND TJERNLUND PRODUCTS, INC. EXPRESSLY DISCLAIMS LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAM-

AGES ARISING FROM THE USE OF THIS PRODUCT. THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES AND NO AGENT

IS AUTHORIZED TO ASSUME FOR US ANY LIABILITY ADDITIONAL TO THOSE SET FORTH IN THIS LIMITED WARRANTY. IMPLIED WAR-

RANTIES ARE LIMITED TO THE STATED DURATION OF THIS LIMITED WARRANTY. Some states do not allow limitation on how long an implied

warranty lasts, so that limitation may may not apply to you. In addition, some states do not allow the exclusion or limitation of incidental or conse-

quential damages, so that above limitation or exclusion may not apply to you. This warranty gives you specific legal rights and you may also have

other rights which may vary from state to state. Send all inquires or products requiring warranty work to Tjernlund Products, Inc. 1601 9th Street, White