User manual TJERNLUND 950-0484 MAC-3 BOARD KIT 8505009 REV. 0800

[. . . ] Jumper wires provided must be installed on Auxiliary Prover terminals (3 & 4) and Auxiliary Limit terminals (9 & 0) if they are not being utilized. For detailed wiring see MAC-3 Instructions enclosed P/N 8504043. MAC-3 CIRCUIT BOARD FEATURES Aux. Limit switch in series with optional limit on terminal strip Optional Alarm Sequencer proves Fan Prover Operation (not limit operation) Appliance # 3 Interlock Used in conjunction with Optional Alarm Sequencer Optional Limit (Spill Switch) 115 VAC Proven "HOT" From Fan Prover Appliance # 2 Interlock 115 VAC Neutral To Inducer / Venter / IN-FORCER 115 VAC "HOT" To Inducer / Venter / IN-FORCER motor & Fan Prover Auxiliary Operation Switch (i. e. Manual or Gas Pressure) Appliance # 1 Interlock 115 VAC Input From Disconnect Switch Aux. [. . . ] Failure to install, maintain and/or operate the MAC-3 in accordance with manufacturer's instructions may result in conditions that can produce bodily injury and property damage. The safety interlock and system operation performance checks must be performed on each appliance interlocked with the MAC-3 in accordance with the Power Venter, Draft Inducer, IN-FORCER or Damper installation instructions. ELECTRICAL All wiring from the MAC-3 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-3 INTERLOCKED WITH 24 VAC & 115 VAC APPLIANCE CONTROL CIRCUITS The circuit board of the MAC-3 is designed for a simple three wire interlock with up to three separate burners. Upon a call for heat the "hot" leg of the burner circuit is intercepted and routed to the MAC-3 terminal strip. The MAC-3 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. Plug-in relays must be purchased separately depending on control system voltage of appliance. Use Tjernlund part # 950-1040 relay For 24 VAC control systems Use Tjernlund part # 950-0480 relay For 115 VAC control systems ELECTRICAL SPECIFICATIONS TABLE MAC-3 CIRCUIT BOARD FEATURES Aux. Limit switch in series with optional limit on terminal strip Optional Alarm Sequencer proves Fan Prover Operation (not limit operation) Appliance # 3 Interlock Used in conjunction with Optional Alarm Sequencer Optional Limit (Spill Switch) 115 VAC Proven "HOT" From Fan Prover Appliance # 2 Interlock 115 VAC Neutral To Inducer / Venter / IN-FORCER 115 VAC "HOT" To Inducer / Venter / IN-FORCER motor & Fan Prover Auxiliary Operation Switch (i. e. Manual or Gas Pressure) Appliance # 1 Interlock 115 VAC Input From Disconnect Switch Aux. Prover contacts in series with H & PH contacts on output terminals Aux. Motor in parallel with H & N used for additional Power Venter, Inducer, IN-FORCER 1 OUTPUT POWER VENTER, DRAFT INDUCER, IN-FORCER & DAMPER WIRING WITH THE MAC-3 When wiring the MAC-3 with a Tjernlund Power Venter without a post-purge Timer/Relay only the Fan Proving Switch and motor leads are utilized for wiring. If you are wiring with a post purge Timer/Relay see wiring on bottom of page 2. Our HSUL Series, GPAK-J/1 Series and Commercial HS-3, 4, 5 Series utilize our part # 950-1040 relays which can be plugged into the MAC-3 for 24V control systems. The HSUL-Series, GPAK-J/1 Series and model HS-5 include one part # 950-1040 relay. The models HS-3 and HS-4 include two part # 950-1040 relays. MAC-3 WIRED WITH A TJERNLUND POWER VENTER, DRAFT INDUCER, IN-FORCER OR 115V DAMPER WITHOUT A POST-PURGE (VENTER MOTOR LESS THAN 9 AMPS) MAC-3 WIRED WITH A TJERNLUND HST, GPAK-T SERIES POWER VENTER OR DRAFT INDUCER WITH A 950-1067 POST-PURGE TIMER/RELAY (VENTER MOTOR LESS THAN 4. 4 AMPS) NOTE: The WHITE/BROWN wire from terminal 5 of the Timer/Relay is ORANGE in the GPAK-T Series. The ORANGE wire from terminal 4 of the Timer/Relay is BLUE in the GPAK-T Series. 2 MAC-3 WIRED WITH A TJERNLUND MODEL SS1 OR SS2 SIDESHOT® VENT SYSTEM MAC-3 WIRED WITH A POWER VENTER, DRAFT INDUCER OR IN-FORCER WITH A MOTOR GREATER THAN 9 AMPS TJERNLUND MODELS INCLUDE THE XL DRAFT INDUCER, HS-5 POWER VENTER & PAI-7 IN-FORCER 3 BURNER INPUT WIRING WITH THE MAC-3 The diagrams included with these instructions depict two burners interlocked with the MAC-3 . To wire a third burner to the MAC-3, purchase the proper control voltage plug-in relay and wire according to the diagram suited for that application. [. . . ] 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-3 date code component was taken from. If MAC-3 date code is older than 18 months you will need to provide a copy of the original installation receipt to your distributor. [. . . ]