2. Reznor
  3. 259521

Reznor 259521 Operating instructions

  • Hello! I'm your chat assistant. I've reviewed the Reznor installation instructions for the Time Delay Relay replacement kit. This document provides detailed steps for replacing relays 46233 and 259518 with the new 259780 relay. It includes crucial safety information, wiring diagrams, and specific instructions for various Reznor unit models, including how to connect wires for Model F and B units with a power venter. I'm ready to answer any questions you have about the installation process.
  • What should I do before starting the relay replacement?
    What is included in the relay replacement kit PN 259521?
    Are there specific wiring instructions for Model F and B units with a power venter?
Revision: OPT-RELAY (06-22) 259524-A
RELAY REPLACEMENT KIT (PN 259521) INSTALLATION
Supersedes: CP-Relay Kit 259521 (09-17) PN259524R2
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 SC(A)(B)(E), SSCBL, RPV, RP(B)BL), HRPD, PGBL, PCCA,
and AHCA and also applies to 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).
Figure 1. Time Delay Relays
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.
OBSOLETE RELAYS REPLACEMENT RELAY
PN 46233 PN 259518 PN 259780
Specifications and illustrations subject to change without notice or incurring obligations.
Latest version of this manual is available at www.reznorhvac.com.
©2022 Nortek Global HVAC LLC, O’Fallon, MO. All rights reserved.
OPT-RELAY (06-22) 259524-A
INSTALLATION—CONTINUED
Figure 2. Wiring Connections for Model F or B Unit with Power Venter
7. Replace venter junction box cover.
8. Turn ON electric and gas and check unit for proper operation.
BKBK
13
RELAY HEAT ER
HH
VENTER TIME DELAY
BRW
R
RELAY CONTACTS
VENTER TIME DELAY
W
Y or O
5
4
2
BKBK
13
RELAY HEATER
HH
VENTER TIME DELAY
BRW
RELAY CONTACTS
VENTER TIME DELAY
Y or O W
45
R
WIRING FOR OBSOLETE RELAY PN 46233WIRING FOR REPLACEMENT RELAY PN 259780
RELAY HEATER
CR
VENTER TIME DELAY
BRBL
RELAY CONTACTS
VENTER TIME DELAY
W
Y or O
COM-2
NC-2
BKBK
13
RELAY HEATER
HH
VENTER TIME DELAY
BRW
RELAY CONTACTS
VENTER TIME DELAY
Y or O W
45
BK
BK
COM-1
NC-1
NO-2
NO-1
G
W
*
* REMOVE THIS WIRE.
WIRING FOR OBSOLETE RELAY PN
259518
WIRING FOR REPLACEMENT RELAY PN 259780
/