McQuay MWMV Specifications download pdf (Page 13)

Operating Limits

Environment

This equipment is designed for indoor installation only.

Sheltered locations such as attics, garages, etc., generally

will not provide sufcient protection against extremes in

temperature and/or humidity, and equipment performance,

reliability, and service may be adversely affected.

Additional Information

Units are designed to start and operate with entering

air at 40˚F (4˚C), with entering water at 70˚F (21˚C),

with both air and water at the ow rates used in the ISO

Standard 13256-1 rating test, for initial start-up in winter.

Note: This is not a normal or continuous condition. It is

assumed that such a start-up is for the purpose

of bringing the building space to occupancy tem-

perature.

Table 4: Air limits in °F (°C)

Air Limits Cooling Heating

Minimum Ambient Air

40°F (4°C) 40°F (4°C)

Rated Ambient

80°F (27°C) 70°F (21°C)

Maximum Ambient Air

100°F (38°C) 85°F (29°C)

Minimum Entering Air

50°F (10°C) 40°F (4°C)

Rated Entering Air

80/67°F (27°/19°C) 70°F (21°C)

Maximum Entering Air

100/83°F (38/28°C) 80°F (27°C)

Table 5: Fluid limits

Fluid Limits Cooling Heating

Minimum Entering 30°F (-1°C) 20°F (-6°C)

Normal Entering 77°F (25°C) 40°F (4°C)

Maximum Entering 110°F (43°C) 90°F (32°C)

Minimum GPM/Ton 1.5

Nominal GPM/Ton 3.0

Maximum GPM/Ton 4.0

Notes: 1. Maximum and minimum values may not be

combined. If one value is at maximum or

minimum, the other two conditions may not

exceed the normal condition for standard

units. Extended range unit may combine any

two maximum conditions, but not more than

two, with all other conditions being normal

conditions.

2. This is not a normal or continuous operating

condition. It is assumed that such a start-up

is for the purpose of bringing the building

space up to occupancy temperature.

Electrical Data

General

1. Be sure the available power is the same voltage

and volt operation unless specied for 230 volts.

phase as that shown on the unit serial plate. Line

and voltage wiring must be done in accordance

with local codes or the National Electrical Code,

whichever is applicable.

2. Apply correct line voltage to the unit. A disconnect

switch near the unit is required by code. Power

to the unit must be sized correctly and have dual

element (Class RK5) fuses or HACR circuit breaker

for branch circuit overcurrent protection. See the

nameplate for correct ratings.

3. All 208-230V single phase units are factory wired for

208 volt operation unless specied for 230 volts.

Operating Voltages

115/60/1 ............................ 104 volts min.; 127 volts max.

208-230/60/1 ....................197 volts min.; 253 volts max.

265/60/1............................238 volts min.; 292 volts max.

230/50/1............................197 volts min.; 253 volts max.

Note: Voltages listed are to show voltage range. However,

units operating circuit overcurrent protection. See the

nameplate for with overvoltage or undervoltage for ex-

tended periods of time will experience correct ratings.

premature component failure.

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McQuay MWMV Specifications Page 13

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