Reznor Valves Parts Manuals - Manual

Form P-VALVES, P/N 263995R4, Page 1
WARNINGS
Selection of replacement control parts from this manual and all servicing to Reznor ® products must
be done by a Reznor ® Distributor or other qualified technician. Improper selection or servicing
could result in severe personal injury, death, or property damage. Reznor Corporation will accept
no responsibility or liability as a result of improper servicing of Reznor ® products.
In the United States, all installations of Reznor ® gas-fired products must be in accordance with the
Standards of the NFPA (National Fire Protection Association), the National Fuel Gas Code, and all
local authorities. In Canada, all installations of Reznor ® gas-fired products must be in accordance
with the CAN/CSA Installation Code for Gas Burning Appliances and Equipment and all provincial
and local authorities.
®
Form P-VALVES (Version F.3)
Obsoletes Form P-VALVES (Version F.2)
Applies to: Serial No. Explanation; Model No. Explanation;
Replacement Ignition Systems and Gas Valves by Serial No. Code;
and Maxitrol System Components by Serial No. Suffix
SAFETY WARNINGS AND GUIDELINES FOR A QUALIFIED SERVICE TECHNICIAN
 When selecting a replacement control, always have the complete Model No. and Serial No. of the heater.
(See pages 2-4 for instructions on decoding those numbers.) If the model and serial number are not
available, contact your Reznor ® Representative. DO NOT SELECT REPLACEMENT CONTROLS WITH-
OUT COMPLETE INFORMATION.
 Before servicing a heater, always turn off the gas and the power supply. Because of the electrical safety
features, never turn off the power supply without turning off the gas.
 The electrical operating valve is the primary safety shutoff. The gas supply line must be free of dirt or
scale before connecting the valve.
 Leak test all gas connections including pilot connections. Test using a commercial leak detecting or a
soap solution. WARNING: DO NOT TEST WITH OPEN FLAME. If a leak cannot be stopped by tightening,
replace the part.
 In the event of pilot outage or improper ignition, wait at least five minutes before attempting to relight
the heater.
 After any service is completed, always test for proper operation. Re-connect the electrical supply and
turn on the gas. Verify against operating sequence information on the heater and in the heater instal-
lation manual. Safety check the installation and equipment. CHECK THAT ALL SAFETY DEVICES ARE
FUNCTIONING PROPERLY.
SAFETY WARNINGS AND GUIDELINES ................................................1
Instructions for Selecting a Replacement Ignition Controller
and/or Valve ........................................................................................2
Serial Number and Model Codes ...........................................................3
Serial No. Decoding ............................................................................ 3
Serial Number Key - Month and Year of Manufacture ....4
Heater Serial No. PREFIX and SUFFIX Codes ..............5
Model No. Decoding ............................................................................ 5
Safety Pilot or Ignition System by Serial No. Code .........................6-10
Type of Gas Valve by Serial No. Code ...........................................11-27
Maxitrol Components for Electronic Modulation .........................28-31
Replacement Parts
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