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ManualsBrandsWhite Rodgers ManualsHydronic & ApplianceWhite Rodgers 25M01A-101 25M Gas Dryer Valves

25M SERIES GAS CONTROLS

PRODUCT INFORMATION

WHITE-RODGERS

The 25M series gas control is a compact,

multifunctional valve, with a direct-acting

regulator ideal for use in pilot valve

applications, thru-the wall heaters, RV

heaters, gas clothes dryers, hearth prod-

ucts, radiant heat systems, water heaters,

cooking applications, agricultural heaters/

dryers, or other high-efficiency equipment.

The 25M valve, provided with a straight-

in inlet, has various outlet configurations

that, when coupled with the various pipe

sizes available, make for easy adaptation

to a given application.

Optional features, such as the inlet

pressure tap, increase the flexibility in

adapting this valve.

Available configurations include:

❚ Single Solenoid

(for pilot valve applications)

❚ Dual Solenoid, Valves in Series

(for applications requiring redundancy)

❚ Dual Solenoid, Valves Independent

(for dual burner applications)

❚ Split-Coil (for use with Hot Surface

Ignition systems)

❚ Two-Stage (for applications requiring

both high-fire and low-fire settings)

Summary of content (8 pages)

PAGE 1
WHITE-RODGERS 25M SERIES GAS CONTROLS PRODUCT INFORMATION The 25M series gas control is a compact, multifunctional valve, with a direct-acting regulator ideal for use in pilot valve applications, thru-the wall heaters, RV heaters, gas clothes dryers, hearth products, radiant heat systems, water heaters, cooking applications, agricultural heaters/ dryers, or other high-efficiency equipment.
PAGE 2
general specifications Standard Features 25M Appliance 25M Manifold X X X X X X X X X X X X X X X X X X X X X Compact Size (3-13/32" x 2-1/2" - 2-19/32") Split Coil Single Solenoid Dual Solenoid Inlet Screen (protected from pipe damage) Outlet Screen (protected from pipe damage) Field Adjustable Regulator Replaceable Operating coils without interrupting gas flow Outlet Pressure Tap Ambient Temperature Rating: 32˚ to 155˚F Ambient Temperature Rating: 32˚ to 175˚F Straight Through Outlet (offset) .
PAGE 3
general specifications Current Requirements OPERATOR(S) REQUIREMENT (AMPS) Voltage Frequency Single Coil Dual Coil, Parallel (total draw) 12 24 24 DC DC 50 Hz .240 .120 .210 .480 .240 .420 24 120 120 60 Hz 50 Hz 60 Hz .175 .035 .030 .350 .070 .060 240 240 50 Hz 60 Hz .030 .025 .060 .050 SPLIT-COIL VERSIONS Model # Rated Volts Hertz 25M01A 120 120 120 120 25M01B SPLIT-COIL 25M01A 1" P.D. Capacity 40K 2" P.D.
PAGE 4
general specifications Regulator Operation The 25M series gas valve utilizes a direct acting regulator construction to maintain proper outlet gas pressure for fluctuating inlet pressures. (Refer to Fig. 1) 1) Calibration The regulator is adjusted at the factory to give the outlet pressure to an orifice as required by the customer (This is referred to as the set point). The outlet pressure (B) and the orifice are selected by the customer to give the desired flow rate of gas necesary for his application.
PAGE 5
general specifications Outline and Mounting Dimensions (cont.) Two Stage Model MAIN COIL, 12 V.D.C., 3/16 QUICK DISCONNECT TERMINALS (LABELED "1" AND "2") 2 MOUNTING HOLES CORED FOR 8-32 SELF-TAPPING SCREWS 7/16 DEEP. L C OF OUTLET 3.468 1.406 .546 2.390 1 18° TYP. .781 DO NOT GRIP 2.947 4 REDUNDANT COIL, 12 V.D.C., 3/16 QUICK DISCONNECT TERMINALS (LABELED "3" AND "4") 6 CONTROL LABEL THIS SURFACE DO NOT VENT / LEAK LIMITER ORIFICE 5 4.217 GRIP HERE OF INLET 2 HERE 3 L C 1.
PAGE 6
general specifications Cross-Sectional Views (cont.) Figure 2 - CROSS-SECTIONAL VIEW OF 25M MANIFOLD VALVE 25M Performance Curves Natural Gas (1000 BTU/FT3, .64 SP. GR.) 2.0 4.5 Set Point: Q = 23.4 KBTU/hr Pout = 3.5" W.C. Outlet Pressure ("W.C.) Pressure Drop ("W.C.) 1.8 1.6 1.4 1.2 1.0 .8 .6 .4 .2 0 4.0 X 3.5 3.0 2.5 2.0 0 20 30 40 50 60 70 Capacity (KBTU/hr) 80 90 100 0 10 20 30 40 50 60 Capacity (KBTU/hr) 70 90 100 80 90 100 L.P. Gas (2500 BTU/FT3, 1.53 SP. GR.) 11.
PAGE 7
features Flip-Flop Convertible Regulator Conversion from LP to NAT (or vice-versa) accomplished by inverting the position of the conversion screw and replacing the orifice. No further adjustment is required (convertible feature is CSA Int’l approved as a fixed-adjust convertible regulator). No provision for field adjustment as special tool is required.
PAGE 8
models available Each valve is uniquely defined by a model number succeeded by the type number as follows: 25M xx x – xxx BASIC MODEL NUMBER SERIES SPECIFICATION OF OPTIONS/FEATURES 01 – Split Coil Model (For use with Power-Vented Si Carbide Ignition Systems), 32˚-175˚ F TYPE NUMBER CODING Number Pipe Size (inlet x outlet) 001-099 Rp Threads 02 – Redundant Solenoids (Valves in Series), 32˚-175˚F 100-199 3/8" x 11/32" (Orifice) 200-299 1/4" x 1/8" NPT 03 – Independently Operating Valves (Du