Transcript TAYPLUS103A

TAYPLUS103A
For Furnace With
Add-on Heat Pump
(Heat Pump Heating with Fossil Fuel supplemental Heat)
Objectives
• Understand application of heat pump with
furnace.
• Understand wiring and operation of
TAYPLUS103A accessory with furnace and
heat pump.
• Become familiar with trouble shooting
procedures in this application.
WHY DUAL FUEL?
• Best of both worlds
– Heat Pump
• High Efficiency above balance point.
• High Capacity above balance point.
– Gas Furnace
• Longer operating cycles at lower outdoor temp..
– Fewer start ups = less stack loss
– Fewer start ups = better comfort level
• Economy at lower outdoor temperatures
Equipment Selection
• Heat Gain / Heat Loss Calculation must be
done for any heat pump application.
Even more important for “dual fuel” application.
• Size heat pump to Cooling Load.
Industry guidelines allow 1.25 multiplier.
• Size furnace (output) to calculated heat loss.
Furnace blower capacity must equal or exceed
heat pump airflow requirement.
Plotting Heat Loss Calculation
After calculating the heat loss of the structure
plotting the heat loss allows you to
determine several things.
– Operating balance point or switch over point
– heat loss at various outdoor temperatures
– approximate heating capacity at various
outdoor temperatures
Plotting Heat Loss Calculation
This can be done on a preprinted curve sheet* or
done on graph paper
80
70
Btu/h Heat Loss
5K increments
60
50
40
30
20
10
0
3.5
3
2.5 unit size
2
1.5
20 10 0
10 20 30 40 50
Outdoor Temperature
60 65
* Pub 34-4024-1
Plotting Heat Loss Calculation
Step 1. mark calculated loss and design temperature
Example: 15of design, 47MBtu/h Loss
80
70
Btu/h Heat Loss
5K increments
60
50
40
30
20
10
0
3.5
3
2.5 unit size
2
1.5
20 10 0 10 20 30 40 50
Outdoor Temperature
60 65
Plotting Heat Loss Calculation
Step 2. Draw line from design point to 65of
80
70
Btu/h Heat Loss
5K increments
60
50
40
30
20
10
0
Example: 15of design, 47MBtu/h Loss,
Cooling load 26.8MBtu
3.5
3
2.5 unit size
2
1.5
20 10 0
10 20 30 40 50
Outdoor Temperature
60 65
OPTIONS
• Bonnet T’stat
– If supply air temperatures 150of or >
• Unrestricted Mode
Indoor Thermostat fully controls operation
• Restricted Mode
Outdoor thermostat limits 2nd stage
Indoor Thermostat
T
O
R W Y
(Electro-mechanical
T’stat only.)
Anticipator circuit
B X2 G
Fan ON output
Switch Over Valve output
(for cooling)
24 Volts hot
Second Stage, Heating output
Emergency heat output
24 Volts common
First Stage, Heat or Cool output
Indoor Thermostat
Use Heat Pump Thermostat
– Electro-mechanical
– Programmable
Relative Line Sizes
in following drawings
Inactive lines
Field wiring
Factory wiring
Active lines
Field wiring
Factory wiring
Bonnet Thermostat Option
T O R W Y B X2 G
W3
X3
Y3
G3
K1-3
Heat Pump
OD section
BR
OR
BR/X2 or BK
K1
X2
YL
Y
RD
R
BL
B
FURNACE
G1
TDR
**
G
BT
T
O
K1-2
TDR-1
W1
W2
Y2
*
R
K1-1
B
X2
Y
Y1
B
W1
* Two stage furnace w/ 2 stage control
**Required if Furnace supply air is >150of.
Limits air temperature over indoor coil.
BT = THT1248
UN-RESTRICTED MODE
STAND BY
T O
R W Y
B X2 G
Room T’stat
TAYPLUS103A
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
TDR
G
W1
T
TDR-1
OR
BR/X2 or BK
O
X2
YL
Y
RD
R
BL
B
FURNACE
W2
*
Y2
R
K1-1
B
X2
Y
Y1
B
W1
* Two stage furnace w/ 2 stage control
UN-RESTRICTED MODE
Call for Cooling
T O R W Y B X2 G
W3
X3
Y3
G3
K1-3
Heat Pump
OD section
BR
K1
K1-2
G1
G
TDR
W1
T
TDR-1
OR
BR/X2 or BK
O
W2
Y2
R
K1-1
X2
B
X2
YL
Y
RD
R
BL
B
FURNACE
Y
Y1
B
W1
UN-RESTRICTED MODE
Call for 1st Stage Heat
T O R W Y B X2 G
W3
X3
Y3
G3
K1-3
Heat Pump
OD section
BR
K1
K1-2
G1
G
TDR
W1
T
TDR-1
OR
BR/X2 or BK
O
W2
Y2
R
K1-1
X2
B
X2
YL
Y
RD
R
BL
B
FURNACE
Y
Y1
B
W1
UN-RESTRICTED MODE
Defrost / 1st Stage Heat
T O R W Y B X2 G
W3
X3
Y3
G3
K1-3
Heat Pump
OD section
BR
K1
K1-2
G1
G
TDR
W1
T
TDR-1
OR
BR/X2 or BK
O
W2
Y2
R
K1-1
X2
B
X2
YL
Y
RD
R
BL
B
FURNACE
Y
Y1
B
W1
UN-RESTRICTED MODE
Call for 2nd Stage Heat
T O R W Y B X2 G
W3
X3
Y3
G3
K1-3
Heat Pump
OD section
BR
K1
K1-2
G1
G
TDR
BR/X2 or BK
O
W2
Y2
R
K1-1
X2
B
X2
YL
Y
RD
R
BL
B
*
W1
T
TDR-1
OR
FURNACE
Y
Y1
B
W1
*American Standard Furnace, furnace control
operates fan. If furnaces needs “G” for fan,
place jumper G3 to G1 (Note 5)
UN-RESTRICTED MODE
Switched to Emerg. Heat, Call for 1st Stage Heat
T O R W Y B X2 G
W3
X3
Y3
G3
K1-3
Heat Pump
OD section
BR
K1
K1-2
G1
G
TDR
W1
T
TDR-1
OR
BR/X2 or BK
O
W2
Y2
R
K1-1
X2
B
X2
YL
Y
RD
R
BL
B
FURNACE
Y
Y1
B
W1
RESTRICTED MODE
“Why would I want to restrict it ?”
Forces Heat Pump to run to preset
outdoor temp.
– Balance point or
– Economic balance point
Can be overridden by selecting
Emergency Heat.
Restricted Mode
Previous Schematic
T O
R W Y
W3
BR
G3
X3
Y3
K1-3
ODT Added **
Heat Pump
OD section
B X2 G
G1
K1-2
K1
TDR
G
W1
T
TDR-1
OR
BR/X2 or BK
O
X2
YL
Y
RD
R
BL
B
FURNACE
W2
*
Y2
R
K1-1
B
X2
Y
Y1
B
W1
1
2
3
**TAYTSAT250A
* Two stage furnace w/ 2 stage control
Restricted Mode
Current Schematic
T O
R W Y
B X2 G
Relay Requirment
Added **
W3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
G3
X3
Y3
TDR
G
W1
T
TDR-1
2
1
O
W2
Y2
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
*
K1-1
B
X2
Y
Y1
B
W1
1
2
3
**RLY0975 + TAYTSAT250A
* Two stage furnace w/ 2 stage control
Current Restricted Mode
Call for Cooling
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
O
W2
Y2
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
1
2
3
K1-1
B
X2
Y
Y1
B
W1
Current Restricted Mode
1st Stage Heat
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
O
W2
Y2
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
1
2
3
K1-1
B
X2
Y
Y1
B
W1
Current Restricted Mode
Defrost /1st Stage Heat
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
O
W2
Y2
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
1
2
3
K1-1
B
X2
Y
Y1
B
W1
Current Restricted Mode
2nd Stage Heat
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
O
W2
Y2
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
1
2
3
K1-1
B
X2
Y
Y1
B
W1
Current Restricted Mode
Emergency Heat
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
O
W2
Y2
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
1
2
3
K1-1
B
X2
Y
Y1
B
W1
Current Restricted Mode
Furnace locked out above ODT Setpoint**
Do not attach wire at W or ODT term 1
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
W2
Y2
O
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
*
K1-1
B
X2
Y
Y1
B
W1
1
2
3
**Note 8 of instructions
* Two stage furnace w/ 2 stage control
Furnace locked out above ODT Setpoint**
Outdoor temp drops below ODT Setpoint
T O
R W Y
W3
G3
X3
Y3
K1-3
Heat Pump
OD section
BR
G1
K1-2
K1
OR
3
B X2 G
TDR
G
W1
T
TDR-1
2
1
W2
Y2
O
R
6
BR/X2 or BK
5
4
X2
YL
Y
RD
R
BL
B
*
K1-1
B
X2
Y
Y1
B
W1
1
2
3
**Note 8 of instructions
* Two stage furnace w/ 2 stage control