The quickest way to know which gas valve is in your York rooftop is to read the label on the valve, then match the unit's series. On the store's series pages, 15-ton DH180, DM180 and ZF180 units list a White-Rodgers 36H32-466 valve (S1-02527720700), while 3 to 5 ton DH060, J03ZF, J04ZF and J05ZF units list a Honeywell VR8204M1026. That series-to-valve mapping comes from the store's own catalog data, not from a York document. York form 697890-YIM-C-0213 (ZF036 to ZF072) shows a Honeywell VR8204M as its single-stage valve with a factory high-fire manifold pressure of 3.50 IWG, and form 1088917-YIM-B-1014 (ZF180 to ZF300) uses two valves set to 3.65 IWG ± 0.3.
Which gas valve is listed for each York rooftop series?
This table comes from the store's own series pages. It shows what is listed, not what every model in the series has, so always check the valve label.
| Series (store page) | Gas valve listed | Size in title |
|---|---|---|
| DH180, DM180, ZF180 (15 ton) | White-Rodgers 36H32-466, S1-02527720700 | 3/4 x 1/2 in. |
| DH060, DM060, J03ZF, J04ZF, J05ZF (3 to 5 ton) | Honeywell VR8204M1026, S1-VR8204M1026 | 1/2 x 1/2 in. |
| DM060, J03ZF, J04ZF, J05ZF (3 to 5 ton) | S1-6257916 natural gas valve | 1/2 x 1/2 in. |
| DH090, DH120 Predator (7.5 and 10 ton) | White-Rodgers 36H55-405, S1-02546611000 | Not stated in title |
Some series list two different valves for different models. The York part number on the valve or in the unit's parts list is what decides it.
How do you tell them apart on the unit?
- Read the label. Check the valve body label for the brand and model (for example 36H32, 36H55 or VR8204).
- Count the valves. Form 1088917-YIM-B-1014 says the ZF180 to ZF300 has two gas valves, GV1 and GV2, one per heat stage. Each has a main valve and a redundant valve upstream of it. The 3 to 6 ton ZF manual, form 697890-YIM-C-0213, describes one main gas valve run by a single ignition control board.
- Check single or two-stage. Form 697890-YIM-C-0213 shows a single-stage Honeywell VR8204M (Figure 23) and a separate two-stage Honeywell valve (Figure 24). Two-stage valves have separate HI and LO regulator screws.
- Check pipe size. The store titles list the 36H32-466 as 3/4 x 1/2 in. and the VR8204M1026 as 1/2 x 1/2 in.
What manifold pressure do these units use?
| Unit | Manifold pressure (natural gas) | Source |
|---|---|---|
| ZF036 to ZF072 (3 to 6 ton) | 3.50 IWG factory high-fire setting | 697890-YIM-C-0213, Manifold Gas Pressure Adjustment |
| ZF180 to ZF300 (15 to 25 ton) | 3.65 IWG ± 0.3 | 1088917-YIM-B-1014, Manifold Gas Pressure Adjustment |
Form 697890-YIM-C-0213 notes that actual manifold pressure depends on the local fuel heating value. On both lines, turn the regulator screw counterclockwise to lower pressure and clockwise to raise it, and replace the cap.
For supply pressure, form 1088917-YIM-B-1014 says natural gas standby pressure must not exceed 13 in. and operating pressure must not drop below 5.0 in. The same form warns that pressures greater than 1/2 PSIG will cause gas valve damage, and gives LP gas pressure as 10.0 in. W.C. at the unit under full load.
How does the valve stage on a two-stage 3 to 6 ton ZF?
Form 697890-YIM-C-0213 describes this firing logic for two-stage gas heat:
- W1 only: high fire for 1 minute, then low fire.
- W2 during low fire: the ignition control goes straight to high fire.
- W1 and W2 together: high fire until W2 is satisfied.
The ignition control board opens the pilot valve with the ignition coil, and opens the main valve only after it proves a stable pilot flame. On shutdown it closes both and runs the draft motor for a 30-second purge.
Our practical advice: if you are swapping a single-stage valve for a two-stage one, or one brand for another, check the wiring and the regulator settings before you leave. Set manifold pressure with a manometer, not by feel.
Parts involved
| Component | Role | Where to find it |
|---|---|---|
| White-Rodgers 36H32-466 gas valve | Listed on the DH180, DM180 and ZF180 pages. | York S1-02527720700 Gas Valve, Natural Gas, 24V, 3/4 x 1/2 in., White-Rodgers 36H32-466 | OEM Source 1 Part |
| Honeywell VR8204M1026 gas valve | Listed on the DH060, DM060, J03ZF, J04ZF and J05ZF pages. | York S1-VR8204M1026 Gas Valve, Honeywell VR8204M1026, Natural Gas, 24V, 60 Hz, 1/2 x 1/2 in. | OEM Source 1 Part |
| S1-6257916 gas valve | Listed on the DM060, J03ZF, J04ZF and J05ZF pages. | York S1-6257916 Gas Valve, Natural Gas, 1/2 x 1/2 in. | OEM Source 1 Part |
| White-Rodgers 36H55-405 gas valve | Listed on the DH090 and DH120 Predator pages. | York S1-02546611000 Natural Gas Valve, 24V, White-Rodgers 36H55-405 | OEM Source 1 Part |
| Spark igniter and flame sensor (15 ton) | Light and prove the pilot each stage before the main valve opens. | York S1-02538951000 Spark Igniter, 34 in. Lead | OEM Source 1 Part, York S1-02538950000 Flame Sensor, with 34" Lead | OEM Source 1 Part |
Which York units this applies to
- York DH180 parts: 15-ton Sunline. Lists the White-Rodgers 36H32-466 valve.
- York ZF180 parts: 15-ton rooftop covered by form 1088917-YIM-B-1014. Two gas valves, 3.65 IWG.
- York DH060 parts: 5-ton Sunline. Lists the Honeywell VR8204M1026.
- York J03ZF parts: 3-ton rooftop. Lists the VR8204M1026 and S1-6257916.
- York DH090 parts: 7.5-ton Predator. Lists the White-Rodgers 36H55-405.
Scope: Valve figures, manifold pressure and staging come from York form 697890-YIM-C-0213 (R-410A ZF036 to ZF072, 60 Hz) and form 1088917-YIM-B-1014 (R-410A ZF180 to ZF300 with Simplicity SE, 60 Hz). We did not read DH060, DH090 or DH180 installation manuals. The valve-to-series listings come from the store's series pages only and are not a York statement. Confirm fit by model and serial number.
Before you order
Read the brand, model and York part number off the valve, plus the unit's model and serial number from the nameplate. Note natural gas or LP and single or two-stage. To confirm fit, contact us at help@totalhvacparts.com or 610-487-7999 with the model, serial and part number.
Frequently Asked Questions
Which gas valve does a York DH180 use?
The store's DH180 series page lists the White-Rodgers 36H32-466, York S1-02527720700, a 24V natural gas valve with 3/4 x 1/2 in. connections. Confirm against the label on your valve.
What is the manifold pressure on a York ZF036 to ZF072?
York form 697890-YIM-C-0213 gives a factory high-fire manifold pressure of 3.50 IWG, and notes that actual pressure depends on the local fuel heating value.
Why does a York 15-ton rooftop have two gas valves?
Per York form 1088917-YIM-B-1014, the ZF180 to ZF300 has one valve per heat stage, GV1 and GV2. Each contains a main valve and a redundant valve that shuts off gas if the main valve fails open.
Can high gas supply pressure damage a York rooftop gas valve?
Yes. York form 1088917-YIM-B-1014 (ZF180 to ZF300) warns that pressures greater than 1/2 PSIG will cause gas valve damage, and says natural gas standby pressure must not exceed 13 in.
Sources
- York form 697890-YIM-C-0213, R-410A ZF Series 3 to 6 ton, 60 Hz installation manual (gas heating sequence; Figures 23 and 24 typical gas valves; manifold gas pressure adjustment)
- York form 1088917-YIM-B-1014, R-410A ZF Series with Simplicity SE, 15 to 25 ton, 60 Hz installation manual (gas piping warning; LP piping; safety controls; post-start checklist; manifold gas pressure adjustment)
- York form 5287207-YIM-G-0119, Installation Manual, ZF180 to ZF300 gas/electric single package rooftop units (later revision on docs.johnsoncontrols.com, for reference)
- Live product titles for the parts listed above, as shown on each product page, and the store's DH180, ZF180, DM180, DH060, DM060, J03ZF, J04ZF, J05ZF, DH090 and DH120 series pages
Gas valve work involves natural gas or propane, combustion and line voltage. Service should be performed only by qualified personnel, following York's manual for your unit, local gas codes and your facility's lockout/tagout procedures. Leak-test every joint you open.