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Multi-zone Condenser Sequence of Operation

EMI America Series multi-zone heat

by providing comfort cooling or heating to

pump condensers are designed to operate

the indoor space. The reversing valve is

with EMI America Series indoor air han-

energized in cooling. Should the valve fail

dlers. Both the condenser (outdoor unit)

to actuate, the system will default to the

and evaporator (indoor unit) have a high

heating mode of operation.

 

Volt service connection. Each is to be inde-

 

 

pendently connected to the electrical ser-

Cooling operation, Multi-zone Heat

vice panel. (See the unit name plate for the

Pump:

 

correct breaker type and size). The outdoor

Cooling mode operation requires that the

and indoor units are also connected to each

control (either unit mount or remote wall

other through a low Volt interconnect wiring.

mount thermostat) make a connection be-

A 24v transformer located in the indoor unit

tween low-Volt terminals “R” and “Y” along

provides the low Volt power source.

with “R” and “O”. When the indoor control

The S & T series (S2HB, T2HB, T3HB &

is placed in cooling mode, with the set point

temperature below the room temperature,

T4HB) heat pumps will provide comfort

the reversing valve will energize (R & O)

cooling or heat pump operation operate

along with the compressor and outdoor fan

at an outdoor temperature range between

(R & Y). When the indoor control is satis-

35°F and 115°F for cooling, 0°F and 75°F

fied and the room temperature falls below

for (heat pump) heating.

the set temperature, the compressor and

The S & T series (S2HB, T2HB, T3HB

fan will de-energize. The EMI indoor unit

& T4HB) heat pump condensers are de-

is equipped with an anti-short cycle timer

signed to operate as a single stage cool-

(ASCT) will prevent the compressor from

ing, two stage heating unit. For full opera-

re-starting for three minutes.

 

tion the unit should be matched with an

 

 

appropriate EMI indoor unit with electric

Heating operation, Multi-zone Heat

heat and unit mounted controls or a wall

Pump:

 

mounted thermostat.

Heating mode operation requires that the

For two stage heating operation the indoor

control (either unit mount or remote wall

mount thermostat) make a

connection

unit must be equipped with an electric strip

between low-Volt terminals

“R” and “Y”

heater.

only. When the indoor control is placed

 

See the instruction manual for the indoor

in heating mode, with the set point tem-

unit on the selection of the proper thermo-

perature above room temperature, the

stat for the system.

compressor and outdoor fan (R & Y) will

 

energize. When the indoor control is satis-

Condenser Operation:

fied and the room temperature rises above

The transformer located in the indoor unit

the set temperature, the compressor and

provides 24V, low-Volt control power to the

fan will de-energize. The EMI indoor unit

condenser (outdoor unit). This can be mea-

is equipped with an anti-short cycle timer

sured across low-Volt terminals “R” and “C”.

(ASCT) will prevent the compressor from

 

re-starting for three minutes.

 

Heat pump condensers utilize a reversing

Note: For full operation the indoor unit

valve to provide reverse cycle operation.

Therefore the outdoor unit will act as ei-

must have an electric heater.

ther a condenser or an evaporator there-

Multi-zone Heat Pump Condensing Units 20

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EMI T4HB, T3HB, T2HB, S2HB manual Multi-zone Condenser Sequence of Operation, Pump

S2HB, T2HB, T3HB, T4HB specifications

The EMI T4HB, T3HB, T2HB, and S2HB models represent innovative advancements in the field of electronic security and surveillance technology. Each model is designed to meet specific security needs while integrating cutting-edge features, making them suitable for a variety of applications, from residential monitoring to large-scale facility management.

Starting with the T4HB, this model is known for its high-definition video capabilities and robust build quality. It offers 4K resolution, providing crystal-clear image quality that captures fine details, making it easier to identify subjects. The T4HB is equipped with advanced night vision technology, allowing it to perform optimally in low light conditions. Additionally, it features motion detection and smart analytics that minimize false alarms and provide users with real-time alerts. The integration with cloud storage solutions ensures that footage is securely saved and easily accessible from various devices.

The T3HB is a slightly scaled-back version, yet it does not compromise on essential features. It supports 1080p full HD resolution and incorporates many of the same intelligent analytics capabilities as its T4HB counterpart. With a wide-angle lens, the T3HB allows coverage of larger areas with fewer cameras. Its weather-resistant design makes it suitable for both indoor and outdoor installations, protecting it from the elements and ensuring reliable performance.

Next is the T2HB, which balances performance and affordability. This model retains high-definition video quality and basic motion detection features, making it ideal for budget-conscious consumers who still want reliable surveillance. The T2HB focuses on user-friendliness with simple setup processes and mobile app integration that allows for easy remote monitoring, making it an attractive option for homeowners.

Lastly, the S2HB is engineered for versatility. It combines the advantages of all previous models, providing excellent video quality and configurable settings for personalized security needs. The S2HB stands out with its smart home compatibility, enabling integration with various smart devices in a home security ecosystem. Its compact design allows for flexible mounting options without compromising performance.

Together, the EMI T4HB, T3HB, T2HB, and S2HB models reflect a commitment to quality, innovation, and user satisfaction in the modern security landscape. They cater to various needs, ensuring that users can find a suitable solution for their surveillance requirements while benefiting from advanced technologies that enhance security and peace of mind.