Product Overview
This document provides technical specifications and dimensional information for the PGMDD and PGMDMD series fresh air dampers manufactured by McDaniel Metals for Goodman and Amana package units, specifically for downflow applications.
Diagrams and Dimensions
The following descriptions detail the visual representations of the dampers and their dimensions:
Installation View
An isometric illustration shows a rectangular fresh air damper unit installed within a duct system. The unit features a control mechanism, likely a knob or lever, for adjusting airflow.
Top Views and Model Identification
Two top views illustrate different damper models:
- Model PGMDD103: Depicted with overall dimensions of 12 1/8 inches in length, 10 inches in width, and 6 inches in height.
- Model PGMDD101/102: Depicted with overall dimensions of 12 1/8 inches in length, 10 inches in width, and 8 inches in height.
Bottom Views
Two "BOTTOM VIEW" diagrams show the base of the damper units. Both models share the same base dimensions:
- Dimension A: 5 3/4 inches
- Dimension B: 11 7/8 inches
Overall Isometric View
A final isometric view presents the damper unit, highlighting connection points labeled 'A' and 'B', and showing the internal grille structure for airflow.
Dimensional Table
| Model | Dimension A (inches) | Dimension B (inches) |
|---|---|---|
| PGMDD101/102 | 16 | 16 |
| PGMDD103 | 18 | 16 |
Specifications
Manual Damper Specifications
- Provides adjustable outside air intake from 0% to 25%.
- Features a locking selection knob to maintain a constant opening position.
Motorized Damper Specifications
- Equipped with a 24 VAC damper motor.
- Motor includes a spring return function.
- The unit is fully assembled and factory wired for ease of installation.
General Specifications
- The damper housing is painted to match the associated HVAC unit.
- All necessary installation hardware and instructions are included with the product.
Manufacturer Information
McDaniel Metals
Contact: 281.987.8400
