Vulcan CONVECTOR Submittal Specification
RF-A / RFG-A Flat Top Cabinet, Recessed, 3 Sided Overlap
Product Overview
This document provides the submittal specification for the Vulcan RF-A and RFG-A series convectors. These units are designed for recessed installation with a flat top cabinet and a 3-sided overlap.
Available Inlet Types:
- RF-A Open Inlet
- RFG-A Louvered Inlet
Key Features and Specifications
- Front and Liner Style:
- Front Outlet, Stamped Louvers, Pencil Proof
- Coil:
- Bronze Header 3/4" NPT with Copper Tube and Aluminum Fins, mechanically expanded.
- Lengths:
- Available in 20" through 64" in 4" increments.
- Cabinet Material (Front and Liner):
- Standard: 18 Ga./20 Ga. CRS (Cold Rolled Steel). Optional: 18 Ga./18 Ga. CRS, 16 Ga./20 Ga. CRS, 16 Ga./18 Ga. CRS, 16 Ga./16 Ga. CRS, 14 Ga./20 Ga. CRS, 14 Ga./18 Ga. CRS, 14 Ga./16 Ga. CRS, 14 Ga./14 Ga. CRS. Liner is Galvannealed Steel.
- Stainless Steel (SS) options available for 18 Ga. and 16 Ga. materials.
- Finish:
- Standard: Baked Powder Prime. Optional: Baked Powder Color.
- Header Connections:
- Single Header Both Ends (Standard)
- Optional: Single Inlet 1 End / Dual Inlet 1 End, Dual Inlet Both Ends.
- Optional Accessories:
- Damper: Damper Blades Factory Installed, Knob Damper (Optional), Tamper Resistant (Optional).
- Access Doors:
- Optional.
- Insulation:
- Optional: Back Only, Back, Sides, Top.
- Piping Knockout:
- Optional.
- 4" End Pockets:
- Optional: Left Hand (LH), Right Hand (RH), Both Ends.
- Note: When end pockets are added, the overall physical length increases by 4" for each pocket. The coil length remains standard.
- Perforated Front:
- Consult Factory. Available in 16 Ga. (Optional) and 14 Ga. (Optional).
Model Dimensions (Type RF-A / RFG-A)
| MODEL | D | L | H | B | J |
|---|---|---|---|---|---|
| 4xx-18 | 18 | 20,24,28, 32,36,40, 44,48,52, 56,60,64 | 20 | 2-1/8 | 4 |
| 4xx-20 | 20 | 20 | 20 | ||
| 4xx-24 | 4-13/16 | 24 | 24 | ||
| 4xx-26 | 26 | 44,48,52, 56,60,64 | 26 | ||
| 4xx-32 | 32 | 56,60,64 | 32 | ||
| 6xx-18 | 18 | 20,24,28, 32,36,40, 44,48,52, 56,60,64 | 24 | 3-1/8 | 6 |
| 6xx-20 | 20 | 20 | 24 | ||
| 6xx-24 | 6-13/16 | 24 | 24 | ||
| 6xx-26 | 26 | 44,48,52, 56,60,64 | 26 | ||
| 6xx-32 | 32 | 56,60,64 | 32 | ||
| 8xx-18 | 18 | 20,24,28, 32,36,40, 44,48,52, 56,60,64 | 26 | 4-1/8 | 8 |
| 8xx-20 | 20 | 20 | 26 | ||
| 8xx-24 | 8-13/16 | 24 | 26 | ||
| 8xx-26 | 26 | 44,48,52, 56,60,64 | 26 | ||
| 8xx-32 | 32 | 56,60,64 | 32 |
Note: The 'L' column indicates available lengths for each model. Dimensions D, H, B, and J are specific to the model number suffix.
Diagram Description: A schematic illustrates the convector unit, showing key dimensions labeled as D (Depth), L (Length), H (Height), B (Width), and J (Projection). It indicates the relationship between overall unit dimensions and liner dimensions, noting that end pockets add to the physical length.
Performance Data and Correction Factors
The document includes detailed steam ratings in BTU/H for Type RF-A and RFG-A convectors, presented in tables based on depth, length, and specific inlet types. These ratings are provided for a standard condition of 215°F water temperature and 65°F entering air temperature.
Several tables offer correction factors to adjust performance based on varying operating conditions:
- Table 3: Convector Correction Factors based on Average Water Temperature and Entering Air Temperature.
- Table 4: Correction Factors for Steam Pressures other than 1 PSI Gauge.
- Table 5: Correction Factors for Access Doors, considering different installation types (Free Standing, Semi-Recessed, Fully Recessed) and door locations.
- Table 6: Pressure Loss in Feet of Water for different water flow rates (GPM) across 4", 6", and 8" models.
- Table 7 & 8: Output-Flow Rate Corrections, showing Gallons Per Minute (GPM) of hot water required and MBH based on water temperature drop and minimum flow rates for turbulent flow.
For precise performance calculations, users should consult these correction factor tables in conjunction with the base BTU/H ratings.
Coil Construction Details
The convector coils are constructed with 3/4" NPT bronze headers. The tubes are made of copper, and the fins are aluminum. The fins are mechanically expanded onto the copper tubes at a density of 6 fins per inch. The coil fins are 2-1/2" high.
Diagram Description: A diagram of the convector coil shows different tube element configurations: 2-tube (4" depth), 3-tube (6" depth), and 4-tube (8" depth), along with their respective widths. It also illustrates the 3/4" NPT typical header connection, riser centers, and liner length relationships. A vent plug and a 3-position hanger welded to the liner are also depicted.
Manufacturer Information
Vulcan
260 North Elm St., Westfield, MA 01085
(413) 568-9571
