Replacement Valves
Table Of Contents
- SAFETY WARNINGS AND GUIDELINES FOR A QUALIFIED SERVICE TECHNICIAN
- Instructions for Selecting a Replacement Ignition Controller and/or Valve
- Serial Number and Model Codes
- Serial No. Decoding
- Serial Number Key - Month and Year of Manufacture
- Heater Serial No. PREFIX and SUFFIX Codes
- Model No. Decoding
- Safety Pilot or Ignition System Originally Supplied, Identified by Serial No. Code -- See Serial No. Decoding on pages 3-4. (N/A = Not available; see other notes below.)
- Type of Valve Originally Supplied -- See Serial No. Decoding on pages 3-4.
- Maxitrol Components for Electronic Modulation - Indirect-Fired Equipment Model Series X, SC, RG, RP, RX, RPV, and EEDU with Options AG7, AG8, AG9, AG21, AG39, AG40, AG41, or AG42
Form P-VALVES, P/N 263995, Page 29
P/N 174848, Maxitrol 1092
Amplier used in Option AG39
and Option AG41 (Support
Bracket, P/N 104155)
P/N Maxitrol Size
Thermocore
Model Size
with Opt AG Gas
42278 MR410 1/2" 75-125 7, 8, 9, 21 Natural
42279 MR510 1/2" 150-200 7, 8, 9, 21 Natural
42280 MR510 3/4" 225-400 7, 8, 9, 21 Natural
156462 MR410H-1 1/2" 75-125 7, 8, 9, 21 Propane
156463 MR510H-1 1/2" 150-200 7, 8, 9, 21 Propane
156464 MR510-H 3/4" 225-400 7, 8, 9, 21 Propane
174815 M420R, 20.0 MBH @3.8" w.c. inlet 1/2" 100 39, 40 Natural
174816 M420R, 25.0 MBH @3.9" w.c. inlet 1/2" 125 39, 40 Natural
174838 M520R, 40.3 MBH @ 3.7" w.c. inlet 1/2" 150-175 39, 40 Natural
174839 M520R, 51.8 MBH @ 3.9" w.c. inlet 1/2" 200-225 39, 40 Natural
174840 M520R, 69.0 MBH @ 4.0" w.c. inlet 3/4" 250-300 39, 40, 41, 42 Natural
174841 M520R, 100 MBH @ 4.4" w.c. inlet 3/4" 400 39, 40, 41, 42 Natural
P/N Maxitrol Size RCDA/RDDA with Opt AG Gas
205582 MR410@120cfh 1/2" 100, 150 57 Natural
205581 MR410-1 1/2" 200 57 Natural
205580 MR510 1/2" 250, 300 57 Natural
208370 MR610-166 3/4" 350, 400 57 Natural
208371 MR610-1-88 1" 450, 500, 550 57 Natural
Regulator used on INDIRECT-FIRED Reznor
®
Model Series X, SC, RG, RP, RX, RPV, and EEDU and gas heat
sections in Models RCDA/RDDA equipped with Optional Electronic Modulation Options AG7, AG8, AG9, AG21,
AG39, AG40, AG41, AG42, AG57
P/N 134170, Maxitrol Signal Conditioner used in
Indirect Fired Gas Control
Option AG21 (Serial No. Sufx Code MVA)
Option AG40 (Serial No. Sufx Code MP2)
Option AG42 (Serial No. Sufx Code MP4)
Option AG44 (Serial No. Sufx Code MP6)
Option AG57
Option DG2
Option DG6
Direct Fired Gas Control
Option AG37 (Serial No. Sufx Code MVC)
When used in Options AG 21, 37, 40, 42, and 44, the
signal conditioner (either Maxitrol A200 or Maxitrol
Model SC10C-B6S1 or SC11-A, depending on date
of manufacture) is activated by a customer-supplied
input signal (either 4-20 milliamps or 0-10 volt).
Maxitrol Signal Conditioner used on Both Indirect Fired Equipment and Direct Fired Equipment