York MA Series Technical Manual

TECHNICAL GUIDE
MODELS: MV
MODULAR VARIABLE SPEED AIR HANDLERS
FOR USE WITH SPLIT SYSTEM
COOLING & HEAT PUMP
1200 - 2000 CFM BLOWERS
3 - 5 TON COILS
OPTIONAL 1 & 3 ELECTRIC HEATERS
φ
Due to continuous product improvement, specifications are
subject to change without notice.
Visit us on the web at www.york.com
Additional rating information can be found at
www.ari.org/aridirectory
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
ISO 9001
Certified Quality
Management System
DESCRIPTION
This unique modular system allows the flexibility to handle any
application. These versatile coils and blowers may be used for
upflow, downflow, or horizontal left or right applications. They
may be combined to function as a cooling only unit or with a heat
pump including electric heat for 1 and 3 phase applications. The
blower and electric heater could be used as stand alone electric
furnaces.
FEATURES
BLOWERS - Models to match any air flow or voltage require-
ment. The compact size allows easy installation. Blowers are
sized to deliver design air quantity both efficiently and quietly.
The motors provide a selection of air quantities to match any
application. All models include a one-minute blower off delay as
standard to enhance system efficiency ratings. The durable, pre-
painted steel protects the unit against rust and corrosion. All
models have 1 inch foil face fiber glass insulation, providing a
thermal insulation value of R-4.2.
COILS - Staggered rows of rifled copper tubes are mechanically
expanded into enhanced surface aluminum fins to provide high
heat transfer and long-lasting quality. The MC multi-position
coils may be used for upflow, downflow, and horizontal left or
right applications. Coil cabinets are insulated with 3/4" foil face
insulation to prevent sweating.
ELECTRIC HEATERS - Both single and three phase electric
heater models are available to match any requirement. All heat-
ers include nickel-chromium elements with a 5-year limited war-
ranty on 1 Ø heating elements and 1 year limited warranty on 3
Ø heating elements. Sequential operation is provided to control
heaters in all models. Circuit breakers are used in 208/230 volt,
single-phase heaters of 15 KW and larger.
Models equipped with circuit breakers may be altered in the field
to use multi-source power supply. Over-temperature limit
switches provide protection from airflow loss with fusible link
backup protection.
ACCESSORIES - A full line of matching accessories available
for use with the blower and coils to allow any type application.
LIMITATIONS - These units must be wired and installed in
accordance with all national and local safety codes.
Voltage limits are as follows:
AIR HANDLER VOLTAGE
208/230 (06)
* Rated in accordance with ARI Standard 110, utilization range "A".
Air flow must be within the minimum and maximum limits approved for electric
heat, evaporator coils and outdoor units.
ENTERING AIR TEMPERATURE LIMITS
WET BULB TEMP. °F
MIN. MAX.
57 72
255427-YTG-B-0706
NORMAL OPERATING
VOLTAGE RANGE*
187 - 253
DRY BULB TEMP. °F
MIN. MAX.
65 95