Thermostat Wiring - Single Stage Heat Pump (With Ygvi Control) - Modulating Furnace; Johnson Controls Unitary Products - York YZF Installation Manual

835966-UIM-E-0814
For additional connection diagrams of all UPG equipment, refer to "Low Voltage System Wiring." Document available online at www.upgnet.com in
the Product Catalog Section.
C
24 - Volt Common
Y1
First Stage Compressor
R
24 - Volt Hot
G
Fan
Fault
W3
Third Stage Heat
Y2
Second Stage
Compressor
W2
Second Stage Heat
W1/O/B
First Stage Heat
HUM
DHUM
Jumper 1 must be
set to "HEAT PUMP"
Jumper 2 must be
set to "O"
Jumper 3 must be
set to "GAS"
Setup Step 50 "Dual
Fuel" must be set
"External"
Suggestion: Set setup
step 26 "2nd Stage
Deadband" and step 29
"Minutes Between 1st
and 2nd" to 0.
FIGURE 10: Thermostat Wiring – Single Stage Heat Pump (with YGVI control) – Modulating Furnace
10
Single Stage Heat Pump (with YGVI control) - Modulating Furnace
HEATPUMP jumper must
if humidistat is to be used.
TM9M
C
24 - Volt Common
Y1
First Stage Compressor
R
24 - Volt Hot
G
Fan
W
Modulating Heat
Y/Y2
Second or Full
Stage Compressor
O
Reversing Valve
Energized in Cool
LO COMP
Single Stage
Compressor (OUT)
HI COMP
Second Stage
Compressor (OUT)
DHUM
Dehumidification
Open on Humidity Rise
be set to "YES"
Move HUMIDISTAT
jumper to "YES"
C
24 - Volt Common
Y1
Single Stage
Compressor
R
24 - Volt Hot
W1 OUT
First Stage Heat
W2 OUT
Second Stage Heat
Y2 OUT
Second Stage
Compressor
O
Reversing Valve
Energized In Cool
X/L
Malfunction Light
Y2
Second Stage
Compressor
W
Auxiliary Heat
BSG
Bonnet Sensor
Bonnet Sensor Kit
(Optional)
S1-37309243000
BS
Bonnet Sensor
Change "FFuel" jumper
on the heat pump control
to "ON"

Johnson Controls Unitary Products

A006-001