Installation Guide for REZNOR models including: 259521 Time Delay Relay, 259521, Time Delay Relay, Delay Relay, Relay
Engineering and Specifications – Reznor HVAC
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DocumentDocumentRevision: OPT-RELAY (11-24) 259524-B Supersedes: OPT-RELAY (06-22) 259524-A RELAY REPLACEMENT KIT (PN 259521) INSTALLATION ALL POWER-VENTED UNITS WITH TIME DELAY RELAY PN 46233 OR 259518 WARNING Turn OFF the gas supply and then disconnect the electric power before performing service work. · This kit is designed to replace either the Texas Instruments (#60000GO-17) time delay relay (PN 46233) or the ICM (#CTVR-AT1207) time delay relay (PN 259518) on any Reznor unit. · This application includes but is not limited to models RP, HRPD, RPB, RPBL, SC, SCE, and SSCBL and obsolete models SCA, SCB, RPV, PGBL, PCCA, and AHCA and also applies to obsolete gravity-vented models F and B when equipped with an optional power venter. · Refer to the installation manual provided with the unit for important safety information. · Relay replacement kit PN 259521 includes these instructions and the Thermodisc (#12S22 305587) replacement time delay relay (PN 259780). OBSOLETE RELAYS REPLACEMENT RELAY PN 46233 PN 259518 Figure 1. Time Delay Relays PN 259780 INSTALLATION 1. Turn OFF gas and disconnect electric power. 2. Remove venter junction box cover. 3. Mark and disconnect existing time delay relay wires. 4. Remove hardware that secures existing time delay relay in venter junction box and remove relay. 5. Use replacement time delay relay as template to mark and drill hole(s) in venter junction box as required. Secure replacement relay in junction box using field-supplied hardware. 6. Reconnect wires to replacement time delay relay: a. For ALL Reznor units EXCEPT model F and B units WITH power venter, wiring is same as for relay being replaced. b. For model F and B units WITH power venter, wiring depends on relay being replaced. Connect wires in accordance with appropriate wiring diagram shown in Figure 2. 7. Replace venter junction box cover. 8. Turn ON electric and gas and check unit for proper operation. DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE. INSTALLATION--CONTINUED WIRING FOR OBSOLETE RELAY PN 46233 VENTER TIME DELAY RELAY CONTACTS BK BK 1 3 WIRING FOR REPLACEMENT RELAY PN 259780 VENTER TIME DELAY RELAY CONTACTS BK BK 1 3 4 W Y or O 5 R 2 Y or O W 4 5 R VENTER TIME DELAY RELAY HEATER W BR H H VENTER TIME DELAY RELAY HEATER W BR H H WIRING FOR OBSOLETE RELAY PN 259518 VENTER TIME DELAY RELAY CONTACTS BK COM-1 BK NO-1 NC-1 WIRING FOR REPLACEMENT RELAY PN 259780 VENTER TIME DELAY RELAY CONTACTS BK 1 BK 3 W Y or O NO-2 COM-2 NC-2 Y or O W 4 5 VENTER TIME DELAY RELAY HEATER * BL R BR C W G *REMOVE THIS WIRE. VENTER TIME DELAY RELAY HEATER W BR H H Figure 2. Wiring Connections for Model F or B Unit with Power Venter Specifications and illustrations subject to change without notice or incurring obligations. Latest version of this manual is available at www.reznorhvac.com. ©2024 Reznor LLC, O'Fallon, MO. All rights reserved. OPT-RELAY (11-24) 259524-B