HEAT

COMPRESSOR

C

R

OLP

S

 

 

 

BLUE RED BLACK

BLACK

RED

CAPACITOR

GREEN BRACKET TO CHASSIS

BLUE

KUHL+

ELECTRONIC CONTROL

PUMP WITH ELECTRIC HEAT MODELS YS12M33A, YM18M34A

 

 

 

 

 

 

 

WIRING DIAGRAM

 

 

 

COIL, SOLENOID

UI HOLDER ELECTRONICS ASY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BL

 

RV

 

OD AIR SENSOR

 

 

 

 

 

 

BLACK

 

OD COIL SENSOR

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

UE

 

ID COIL SENSOR

 

 

 

 

 

 

 

FAN 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

BLACK

FAN 3

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

HEATER

 

 

 

BLUE

FAN 2

 

 

 

 

 

 

 

ORANGE

 

ORANGE

RELAY

 

 

 

 

 

 

 

 

FAN 1

 

 

 

 

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEAT

 

 

 

DCHRG

 

 

 

 

 

 

RELAY

 

 

 

AIR

TO

 

 

 

 

 

 

 

 

 

SENSOR

DISPLAY

 

 

 

 

 

HEAT

 

L2 or ACN

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AMBIENT

 

 

 

 

 

 

COMP

 

 

 

AIR SENSOR

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

L1

 

 

 

 

 

 

 

 

 

 

BLACK

 

 

 

 

 

 

 

 

 

WHITE

WHITE

GREEN/YELLOW

SUPPLY CORD

 

 

 

 

WHITE

RED

GREEN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAPACITOR

 

 

 

 

 

 

 

 

 

 

COM

 

 

 

BROWN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OR

 

 

M

F A

 

 

GREEN

MOTOR

 

 

 

TO CAPACITOR

E

 

 

 

 

 

 

 

BRACKET

 

H

 

N

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

TO INNERWALL/

 

 

 

 

 

 

 

 

 

MOTOR MOUNT

 

 

 

 

 

 

SCHEMATIC

NEUTRAL (115 V)

L1

 

 

 

HIGH

 

USER INTERFACE

 

L2

(230/208 V)

 

 

 

 

 

 

 

 

3

F3

 

 

 

 

R

 

 

 

 

 

MEDIUM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

F2

 

 

 

OLP

FAN MTR

 

 

 

 

LOW

 

 

 

 

 

 

 

 

 

 

 

COM

 

1

F1

 

 

 

 

S

FAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRIC HEAT

 

 

 

 

CAP

 

6

EH1

HL

HTR

TF

 

 

 

 

 

 

ELECTRIC HEAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

EH2

 

 

 

 

 

 

 

 

 

L2

REVERSING CYCLE

 

RV

OLP

R

 

 

 

 

 

 

 

 

 

 

8

RV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMPRESSOR

 

 

C

COMPRESSOR

 

L1

5

COMP

 

 

 

 

 

 

 

 

 

 

COM

ELECTRONIC CONTROL

 

 

 

 

S

HERM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAP

 

 

 

L E G E N D

 

 

 

 

CAP

- CAPACITOR

COMPR - COMPRESSOR

MTR

- FAN MOTOR

OLP

- OVERLOAD PROTECTOR

UI

- USER INTERFACE

TF

- THERMAL FUSE

HL

- HEATER LIMIT FUSE

- REVERSING VALVE

T

- THERMISTER

 

 

- COMBINATION TERMINAL

 

- GROUNDED LEAD SYMBOL

 

- INSULATOR

HTR - HEATER ELEMENT

PART NO.

REV.

92170004

04

74

Page 75
Image 75
Friedrich R-410A service manual Heat

R-410A specifications

Friedrich R-410A is an advanced refrigerant widely used in HVAC (Heating, Ventilation, and Air Conditioning) systems, known for its high efficiency and environmental friendliness. As a hydrofluorocarbon (HFC) blend, R-410A has become the preferred alternative to R-22, which is being phased out due to its ozone-depleting potential. One of the main features of R-410A is its high latent heat of vaporization, which allows for efficient heat transfer and improved cooling performance in air conditioning units.

Technologically, R-410A operates at higher pressures than older refrigerants, meaning systems designed for R-410A need to be built with more robust components to safely handle these pressures. This results in a more compact system design that offers enhanced performance and reliability. The dual-component nature of R-410A—composed of difluoromethane (R-32) and pentafluoroethane (R-125)—provides an optimal balance of thermodynamic properties, leading to superior energy efficiency, especially in variable speed applications.

In terms of characteristics, R-410A has a higher cooling capacity, which enables HVAC systems to effectively cool larger spaces or run more efficiently when cooling smaller areas. The refrigerant is non-toxic and non-flammable, which enhances safety during its use. In addition, R-410A has a lower global warming potential relative to other refrigerants, making it a more environmentally responsible choice for modern cooling systems.

Moreover, R-410A systems typically require less refrigerant charge due to their efficiency, contributing to reduced greenhouse gas emissions. The adoption of R-410A aligns with regulatory trends aimed at minimizing the environmental impact of refrigerants in cooling applications.

Overall, the Friedrich R-410A refrigerant embodies a combination of technology and environmental stewardship, making it a cornerstone of contemporary HVAC design. Its ability to provide effective and energy-efficient cooling solutions while being compliant with modern environmental regulations positions R-410A as the refrigerant of choice for engineers and installers focused on sustainability and performance in air conditioning systems.