McQuay PDHA Especificaciones descargar pdf (Pagina 41)

Catalog 1300-1 / Page 41 of 42

Engineering Guide Specications – PDAC/PDHP 16" × 42"

The indoor fan will stop if indoor coil temperature falls below 78°F. It will restart at its set speed when indoor coil

temperature rises back to 80°F.

Condensation accumulated during reverse cycle heating must NOT be evaporated against the indoor coil so as

to prevent contamination of the indoor air with pollutants and odors. Condensation must be disposed of using a

(external) (internal) drain system as shown on plans.

Control module – The Control module is used to control a PDAA/PDHA or PDAF/PDHF unit that includes both

an integral air conditioner and a source of heat. The Digital Control is operated with a Touchpad or 24 volt, Wall

Mounted Thermostat.

Inputs And Outputs

The control module offers the following inputs:

1. Indoor Coil Sensor (ICS)

2. Indoor Air Sensor (IAS)

3. Outdoor Air Sensor (OAS)

4. Inputs from Remote Thermostat (R, B, G, Y, W)

5. Heat Fan Lock Out Sensor (HFLO)

6. Power Supply, 24VAC

The control module offers the following outputs:

1. Compressor Output (COM)

2. Outdoor Fan (FAN)

3. Indoor Fan Fan cycle or Fan Continuous and Blower Hi or Blower Lo shall be incorporated to allow either

continuous or automatic fan cycle operation at the selected fan speed. When choosing automatic fan cycle

operation, the fan shall be energized only when the compressor or electric resistance heaters are energized.

4. Damper Control (DAMPER)

5. Hydronic Valve (HYV)

On heat pump models, a Low Ambient temperature limit Sensor (OAS) shall be incorporated to energize the electric

resistance heaters at 35°F outdoor air temperature.

Room cabinet (PDAA/PDHA) – Shall be angled top, wraparound design with an 18-gauge front panel that is

phosphatized and coated with baked on urethane powder paint, corrosion resistant nish to match the wall sleeve. Side

panels shall be constructed of polycarbonate material with decorative vertical grooves and ame class rated at 94V per

UL standard 494.

Room cabinet (PDAF/PDHAF) – Shall be at top, wraparound design with an 18-gauge front panel that is

phosphatized and coated with baked on urethane powder paint, corrosion resistant nish to match the wall sleeve. Side

panels shall be constructed of polycarbonate material with decorative vertical grooves and ame class rated at 94V per

UL standard 494.

Discharge grille (PDAA/PDHA) – Shall be an integral part of the cabinet and shall be a raised style. Discharge

grille shall be made of the same polycarbonate material as the room cabinet side panels. Grille shall be sectional, two-

position reversible, tamper proof, and carry a ame test rating of 94V0 in accordance with UL standard 494.

Discharge grille (PDAF/PDHF) – Shall be an integral part of the front panel and shall be one piece, stamped and

painted Oxford Brown.

Control access door – Shall be mounted on the right-hand side.

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McQuay PDHA Especificaciones Pagina 41