CARRIER

FA, FB, FC,

PROGRAMMABLE

THERMOSTAT

FD, FF, FH

MODEL HP

FAN COIL

HEAT PUMP

CARRIER

 

 

ONE

PROGRAMMABLE

 

 

THERMOSTAT

FA, FB, FC, FD, FF, FH

HEAT

OUTDOOR

MODEL HP

FAN COIL

PUMP

THERMOSTAT

24 VAC HOT

R

R

 

INDOOR FAN

G

G

HEAT STAGE 2

W/W1

W2 *

 

COOL/HEAT

Y/Y2

E *

STAGE 1

W3 *

 

 

 

RVS COOLING

O/W2

 

NOT USED

Y1/W2

 

24 VAC COM

C

C

NOT USED

B

 

TROUBLE

L

* IF AVAILABLE

 

OPTIONAL

S1

 

OUTDOOR

 

 

SENSOR

S2

 

CONNECTION

 

R

W2

Y

O

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24 VAC HOT

 

R

 

 

 

 

 

 

 

 

INDOOR FAN

 

G

 

 

 

 

 

 

 

 

 

HEAT STAGE 2

 

W/W1

 

COOL/HEAT

 

 

 

 

 

 

 

Y/Y2

 

STAGE 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RVS COOLING

 

 

 

O/W2

 

NOT USED

 

 

 

 

 

 

Y1/W2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24 VAC COM

 

C

 

 

 

 

 

 

 

 

NOT USED

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

TROUBLE

 

 

L

 

 

 

 

 

 

 

 

 

OPTIONAL

 

 

 

S1

 

OUTDOOR

 

 

 

 

 

SENSOR

 

 

 

 

 

 

CONNECTION

 

 

 

S2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W3

R

G

W2

E

C

R

 

W2

ODT

 

Y

O

C

A97534

NOTE: Remove wires from crimp nut in indoor fan coil when installing outdoor thermostat.

IMPORTANT: When using outdoor thermostat, W2 must be energized when requesting supplemental heat.

A97535

CARRIER

FA, FB, FC,

 

TWO

PROGRAMMABLE

 

THERMOSTAT

FD, FF, FH

HEAT

OUTDOOR

MODEL HP

FAN COIL

PUMP

THERMOSTATS

24 VAC HOT

INDOOR FAN

 

W3

ODT

R

 

 

 

EHR

R

R

G

 

 

 

G

 

CARRIER

 

 

PROGRAMMABLE

40FKA

 

THERMOSTAT

FK4C

HEAT

MODEL HP

FAN COIL

PUMP

HEAT STAGE 2

COOL/HEAT STAGE 1

RVS COOLING

NOT USED

24 VAC COM

NOT USED

TROUBLE

OPTIONAL OUTDOOR SENSOR CONNECTION

W/W1

 

 

 

W2

W2

Y/Y2

 

 

 

O/W2

 

Y

 

 

EHR

 

O

Y1/W2

 

 

 

 

E

ODT

 

 

C

EHR

 

 

C

B

C

 

 

L

 

 

S1

 

 

S2

 

 

 

 

 

 

 

24 VAC HOT

 

R

 

 

 

INDOOR FAN

 

G

 

 

 

 

 

HEAT STAGE 2

 

W/W1

COOL/HEAT

 

 

 

 

Y/Y2

STAGE 1

 

 

 

 

 

 

 

 

 

 

RVS COOLING

 

 

O/W2

NOT USED

 

 

 

 

Y1/W2

 

 

 

 

 

 

 

 

 

 

 

 

 

24 VAC COM

C

 

 

 

NOT USED

B

 

 

 

TROUBLE

L

 

 

 

 

 

DH J1 JUMPER

R R

G

W1

W2

W2

J2 JUMPER

 

Y/Y2

Y

O

O

C

C

Y1

 

NOTE: Remove wires from crimp nut in indoor fan coil when installing outdoor thermostats.

IMPORTANT: When using outdoor thermostats, W2 must be energized when requesting supplemental heat.

A97536

 

 

 

 

OPTIONAL

 

S1

OUTDOOR

 

 

SENSOR

 

 

 

CONNECTION

 

S2

 

 

 

 

A98629

Fig. 9—Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Fan Coils

and No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats

6

Page 6
Image 6
Carrier 38YSA instruction manual Programmable

38YSA specifications

The Carrier 38YSA is a cutting-edge cooling solution designed to meet the demands of modern residential and commercial applications. Renowned for its energy efficiency and reliable performance, the 38YSA series represents the pinnacle of Carrier’s commitment to innovation in HVAC technology.

One of the standout features of the Carrier 38YSA is its energy efficiency. It utilizes advanced inverter technology, allowing it to adjust its cooling output based on the specific needs of the indoor environment. This technology not only reduces energy consumption but also minimizes fluctuations in temperature, providing a more consistent and comfortable living or working space. The unit achieves impressive SEER (Seasonal Energy Efficiency Ratio) ratings, making it an environmentally friendly choice.

The 38YSA is equipped with a variable-speed compressor, which optimizes performance by operating at different speeds. This capability allows the system to ramp up or down in accordance with the cooling load, ensuring optimal comfort and minimizing energy usage. This technology also translates to quieter operation, making the 38YSA ideal for residential neighborhoods and low-noise environments.

In terms of features, the Carrier 38YSA incorporates smart controls that can be operated remotely via mobile devices. This feature provides users with the flexibility to manage their cooling systems from anywhere, optimizing comfort while on the go. The user-friendly interface allows for easy programming of temperature schedules, further enhancing energy savings and comfort.

Durability is another characteristic that sets the Carrier 38YSA apart. The unit is engineered with robust materials and components designed to withstand harsh weather conditions. Its corrosion-resistant casing and high-quality condenser coils ensure longevity and reliable performance over the years.

Furthermore, the 38YSA is designed with eco-friendly refrigerants, contributing to a reduction in global warming potential, which aligns with increasing environmental regulations. The commitment towards sustainability is evident in Carrier’s entire product line, emphasizing the importance of creating energy-efficient and eco-conscious cooling systems.

Overall, the Carrier 38YSA is a sophisticated and efficient cooling solution, integrating advanced technologies to deliver optimal comfort, reliability, and energy savings. Its blend of innovative features, durable design, and environmental responsibility makes it a top choice for anyone seeking effective air conditioning solutions.