York HL8B Installation Manual download pdf (Page 12)

501055-UIM-B-1009

12 Johnson Controls Unitary Products

FIGURE 14: Thermostat Wiring – Two-Stage Heat Pumps - Variable Speed Modulating Furnaces

HP 28A Two Stage Heat Pump – Variable Speed Modulating Furnace (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

YORKGUARD VI

CONTROL

TWO STAGE

HEAT PUMP

Bonnet Sensor

(Optional)

24 – Volt Common

First Stage Compressor

Malfunction Light

Second Stage Compressor

Fan

*PP32U71124

*PP32U72124

THERMOSTAT

24 – Volt Hot

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

DHM

Dehumidistat

Humidistat

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

Single Stage Compressor

VARIABLE SPEED

MODULATING

FURNACE CONTROL

Fan

VARIABLE SPEED

MODULATING

FURNACE

Y/Y2

Second or Full

Stage Compressor

HUM

Dehumidification-

Open on Humidity Rise

Modulating Heat

Change FFuel jumper

on the heat pump control

to “ON”

Part Numbers:

SAP = Legacy

171334 = 031-09153

Move HUMIDISTAT

jumper to “YES”

if humidistat is to be used.

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996

340512 = 031-09178

PC(8/9)

ID MODELS

FC(8/9)C

FL(8/9)C

YZE

OD MODELS

YZH

H*5

H*8

Step 1 of the Thermostat

Installer Table must be

set to Heat Pump

E2/P Switch must be in the

E2 position

Step 2 of the Thermostat

Installer Table must be

set to 2

Step 5 of Thermostat User

Configuration Menu must

be set to “ON” for

Dehumidification

24VAC Humidifier

(Optional)

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

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York HL8B Installation Manual Page 12

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