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 17
Type of Valve Originally Supplied (cont'd) -- See Serial No. Decoding on pages 3-4.
A dash (-) in the serial number means that no electric valve was furnished. All valves are 24 volt unless noted otherwise.
See ALL notes on pages 19-22. N/A = Not Available. See illustrations on pages 23-27.
Serial No.
Code
Original Valve on Heater
Valve
Mfr
1
Pipe
Size
P/N
2
Functional Replacement
Code P/N
X8orZ4 VR8105N2949, Nat, 2-stage M/H 1/2 196849 - N/A Y8or4A 197066
X9orZ5 VR8105K2959, LP, single stage M/H 1/2 196850 - N/A 9E 263999
Y1orZ6 VR8105N2931, LP, 2-stage M/H 1/2 196851 - N/A 2A 197064
Y2orZ7 VR8205K2957, Natural, single stage M/H 1/2 196980 - N/A 6E
44
260603
Y3orZ8 VR8305K4241, Natural, single stage M/H 3/4 196981
Y4orZ9 VR8205K2965, LP, single stage M/H 1/2 196982 - N/A 9E
44
263999
Y5or1A VR8305K4258, LP, single stage M/H 3/4 196983
Y6or2A VR8205N2913, LP, 2-stage M/H 1/2 197064
Y7or3A VR8305N4289, LP, 2-stage M/H 3/4 197065
Y8or4A VR8205N2921, Natural, 2-stage M/H 1/2 197066
Y9or5A VR8305N4297, Natural, 2-stage M/H 3/4 197067
Z1 2-STG VLV, LP, VR8205N2939 M/H 1/2 195736
Z2 2-STG VLV, NAT, VR8205N2947 M/H 1/2 195738
6A VR8205M2955, Nalural, single stage M/H 1/2 204301
7A V8295A1031, 2PSI Natural & Propane M/H 1 203860
8A V8295A1049, N & P M/H 1-1/4 203861
9A 36H32-441 Natural, single stage W/R 3/4 221525
1B 36H32-442 Propane, single stage W/R 3/4 221526
2B V8944N-1053, 2-Stage, Natural M/H 1 203866
3B V5155B-2548, Mech Mod Vlv 40-160° M/H 1 203868-N/A
3
4B V5155A Mech Mod Vlv 40-120° M/H 1 203869
5B (Two
Valves)
41
AG55, 3:1 Turndown with two 1-stage valves, natural gas, RDCA/RDDA w/Heat Section 200, 250, 300
VR8105K2942, Nat, single stage (Code X7 or Z3) M/H 1/2 196848 (X7orZ3) - N/A 6E 260603
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 196980 (Y2orZ7) - N/A 6E 260603
6B (Three
Valves)
42
AG57, 6:1 Turndown w/two 1-stage valves & a modulating valve, nat gas, RDCA/RDDA w/Heat Section 100, 150
VR8105K2942, Nat, single stage (Code X7 or Z3) M/H 1/2 (2)196848 (X7orZ3) - N/A 6E (2) 260603
MR410-1, Maxitrol Modulating Valve Maxitrol 1/2 205582
7B (Three
Valves)
42
AG57, 6:1 Turndown w/two 1-stage valves & a modulating valve, nat gas, RDCA/RDDA with Heat Section 200
VR8105K2942, Nat, single stage (Code X7 or Z3) M/H 1/2 196848 (X7orZ3) - N/A 6E 260603
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 196980 (Y2orZ7) - N/A 6E 260603
MR410-1, Maxitrol Modulating Valve Maxitrol 1/2 205581
8B (Three
Valves)
2
AG57, 6:1 Turndown w/two 1-stage valves & a modulating valve, nat gas, RDCA/RDDA w/Heat Section 250, 300
VR8105K2942, Nat, single stage (Code X7 or Z3) M/H 1/2 96848 (X7orZ3) - N/A 6E 260603
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 196980 (Y2orZ7) - N/A 6E 260603
MR510, Maxitrol Modulating Valve Maxitrol 1/2 205580
9B VR8200M7005 , Natural, single stage, w/stnd pilot M/H 1/2 208920
1C VR8200M7013, LP, single stage, w/stnd pilot M/H 1/2 209412
2C (Two
Valves)
41
AG55, 3:1 Turndown with two 1-stage valves, natural gas, RDCA/RDDA with Heat Section 100, 150
VR8105K2942, Nat, single stage (Code X7 or Z3) M/H 1/2 196848 (X7orZ3) - N/A 6E 260603
VR8105K2942, Nat, single stage (Code X7 or Z3) M/H 1/2 196848 (X7orZ3) - N/A 6E 260603
3C (Three
Valves)
41
AG55, 3:1 Turndown w/three 1-stage valves, nat gas, RDCA/RDDA w/Heat Section 450, 500, 550, 600, 650, 700
(2) VR8305K4241, Nat, single stg (Code Y3 or Z8) M/H 3/4 (2)196981 (Y3orZ8)
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 (1)196980 (Y2orZ7) - N/A 6E 260603
4C (Two
Valves)
41
AG55, 3:1 Turndown w/two 1-stage valves, propane gas, RDCA/RDDA w/Heat Section 100, 150, 200, 250, 300
VR8105K2959, Pro, single stage (Code X9 or Z5) M/H 1/2 196850 (X9orZ5) - N/A 9E 263999
VR8105K2959, Pro, single stage (Code X9 or Z5) M/H 1/2 196850 (X9orZ5) - N/A 9E 263999
5C (Two
Valves)
41
AG55, 3:1 Turndown with two 1-stage valves, propane gas, RDCA/RDDA with Heat Section 350, 400
VR8105K2959, Pro, single stage (Code X9 or Z5) M/H 1/2 196850 (X9orZ5) - N/A 9E 263999
VR8305K4258, Pro, single stage (Y5 or 1A) M/H 3/4 196983 (Y5or1A)
6C (Three
Valves)
41
AG55, 3:1 Turndown w/three 1-stage valves, propane gas, RDCA/RDDA w/Heat Sctn 450, 500, 550, 600, 650, 700
VR8105K2959, Pro, single stage (Code X9 or Z5) M/H 1/2 196850 (X9orZ5) - N/A 9E 263999
(2) VR8305K4258, Pro, single stg (Code Y5 or 1A) M/H 3/4 (2)196983 (Y5or1A)
7C (Three
Valves)
2
AG57, 6:1 Turndown w/two 1-stage valves & a modulating valve, nat gas, RDCA/RDDA w/Heat Section 350, 400
VR8305K4241, Nat, single stage (Code Y3 or Z8) M/H 3/4 196981 (Y3orZ8)
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 196980 (Y2orZ7) - N/A 6E 260603
MR610-1-66, Modulating Valve Maxitrol 3/4 208370
8C (Three
Valves)
42
AG57, 6:1 Turndown w/3 1-stg valves & a modulating valve, nat gas, RDCA/RDDA w/Heat Sctn 450, 500, 550, 600, 650, 700
(2) VR8305K4241, Nat, single stg (Code Y3 or Z8) M/H 3/4 (2)196981 (Y3orZ8)
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 196980 (Y2orZ7) - N/A 6E 260603
MR610-1-88, Modulating Valve Maxitrol 1 208371
9C (Three
Valves)
41
AG55, 3:1 Turndown with two 1-stage valves, natural gas, RDCA/RDDA with Heat Section 350, 400
VR8305K4241, Nat, single stage (Code Y3 or Z8) M/H 3/4 196981 (Y3orZ8)
VR8205K8905, Nat, single stage (Code Y2 or Z7) M/H 1/2 196980 (Y2orZ7) - N/A 6E 260603
(continued)