Low voltage peak control connections, Low voltage outdoor sensor connections, Low voltage room thermostat connections – Steffes 4140 Simplified Installation Guide User Manual
Page 4: We y 1 y 2, Cblower speed a b, Single stage heat pump application, Two stage heat pump application, D6 rly1, D4 fid 2, D1 j4

The W/E Jumper must be installed
Air
To Control Board
D4
Fid 2
Blower
C3
R1
R2
P10
D6
RLY1
P11
D5 D7 D3
Wa
te
r
W
E
Y
1
Y
2
P5
J3
J2
J1
D2
J4
D1
P6
P4
C
B
A
D
Speed
Blower
J6
J5
P3
P2
P8
P9
Air Conditioner
Connections
(If being used in the
application)
The Y1/Y2 Jumper must be installed
Y
W
G
C
TH5110D
Honeywell
R
c
R
Y
Outdo
o
r
W/
Y1
AUX
G
O
Y2
Y1
R C
H/E
2
O
2
2
Y2
COM
Outdo
o
r
NO
AP
P
RP
NC
Aux.
Peak
Inputs
Relay
C
P1
To Control Board
Comfort Plus
R
C
LV Circuit Board
P7
9
LOW VOLTAGE PEAK
CONTROL CONNECTIONS
If utilizing a Steffes Time Clock
Module or Power Line Carrier control,
refer to the installation instructions
provided with the device.
10
LOW VOLTAGE OUTDOOR SENSOR
CONNECTIONS
1. Route low voltage wire from load
control device to terminal block.
2. Connect field wiring to RP and P
positions.
The outdoor temperature sensor can be installed by wiring it directly to the
system or to the Steffes power line carrier (PLC) system.
Direct Wired:
1. Mount outdoor sensor in a location where it can accurately sense
outdoor temperature.
2. Route low voltage wire from outdoor sensor to electrical
compartment:
Outdoor sensor wire MUST NOT be combined with other control
wiring in a multi-conductor cable.
Seal external wall openings.
Outdoor sensor lead can be extended to 250 ft.
Unshielded Class II (thermostat) wire can be used provided it is
segregated from any line voltage wiring.
3. Connect outdoor sensor wires to the two "OUTDOOR" positions of the
low voltage terminal block.
If connecting to the Steffes
power line carrier system,
follow the installation instruc-
tions in the PLC systems
Owners and Installers Guide.
LOW VOLTAGE ROOM THERMOSTAT CONNECTIONS
A 24 VAC thermostat must be used (digital recommended).
1. Disconnect power to the Comfort Plus system.
2. Route low voltage wires from the thermostat to the
Comfort Plus System.
3. Insulate thermostat wire wall opening if necessary and
attach thermostat to the wall. When using a mechani-
cal thermostat or thermostat with anticipator, resistor
kit #1190015 must be installed to ensure proper
operation.
4. Connect low voltage wires from thermostat into
terminal block as shown.
11
12
SOFTWARE CONFIGURATION AND INSTALLERS FINAL CHECKOUT
To ensure proper operation, the system software must be configured for the application. Refer to the Configuration Menu in
the Owner's and Installer's Manual or to the Configuration Guide provided by your local power company. Also, complete the
Installer's Final Checkout Procedure found in the Owner's and Installer's Manual.
Part No. 1200283-6
3050 Hwy 22 North w Dickinson, ND 58601-9413 w www.steffes.com
NOTE: For detailed heat call information, reference the
Owner's and Installer's Manual.
P8
P9
Aux.
COM
NC
AP
NO
Relay
Outdoor Sensor
O
W/
Y1
AUX
Y2 G
Ou
td
o
o
r
Ou
td
o
o
r
Y2
R
H/E
2
Y1
C
O
2
2
RP P
R
C
P1
P11
D3
D7
D5
W
E
Y
1
Y
2
Water
Ai
r
P6
D1
P5
Blower
J3
J1
J2
J4
D2
To Control Board
P3
C
Blower
Speed
A
B
J5
J6
C3
D
P4
P2
Inputs
Peak
P7
LV Circuit Board
Comfort Plus
To Control Board
P10
Fid 2
RLY1
D4
D6
R2
R1
P9
Aux.
CO
M
NC
AP
NO
Relay
P8
O
W/
Y1
AUX
Y2 G
Out
door
Out
door
Y2
R
H/E
2
Y1
C
O
2
2
RP P
R
C
P1
Inputs
Peak
P7
LV Circuit Board
Comfort Plus
To Control Board
P10
Fid 2
RLY1
D4
D6
R2
R1
P11
D3
D7
D5
W
E
Y
1
Y
2
Water
Ai
r
P6
D1
P5
Blower
J3
J1
J2
J4
D2
To Control Board
P3
C
Blower
Speed
A
B
J5
J6
C3
D
P4
P2
Dry Contact Peak
Control Switch
Single Stage Heat Pump Application
IMPORTANT
A
B
C
D
W /
E
Y1
/
Y2
J1
J2
J3
J4
J5
J6
Blower
Speed
Stand Alone Furnace Application with Uncontrolled
Air Conditioning
IMPORTANT
A
B
C
D
W / E
Y1 /
Y
2
J1
J2
J3
J4
J5
J6
Blower
Speed
Two Stage Heat Pump Application
IMPORTANT
P8
Peak
Aux.
Inputs
Relay
The Y1/Y2 Jumper must be installed
Honeywell TH5220D
Aux
E
L
C
G O/B
R
Y
R
c
C - Low Voltage Common
R - Low Voltage Hot
O - Reversing Valve
Y - Compressor
To Heat Pump
Outdoor Sensor
The W/E Jumper must be installed
P9
H/E
R C
Ou
tdoo
r
Ou
tdoo
r
CO
M
NC
NO
W/
D6
RLY1
To Control Board
D4
Fid 2
Blower
To Control Board
Ai
r
C3
P10
R1
R2
P11
D5 D7 D3
Wa
te
r
Y
1
Y
2
W
E
D2
J3
J2
J1
P5
D1
J4
P6
P4
Speed
Blower
J6
J5
C
B
A
D
P2
P3
Y1
AUX
O
G
Y2
Y1
2
Y2
2
2
O
C
R
Comfort Plus
LV Circuit Board
P7
AP
P
RP
P1
Honeywell TH5320U
R
R
Y
C
O/B
G
Aux
Y2
Y2 - Compressor Stage 2
C - Low Voltage Common
c
L
R - Low Voltage Hot
O - Reversing Valve
To Heat Pump
Y1 - Compressor Stage 1
The Y1/Y2 Jumper must be removed
W/
NO
NC
CO
M
O
u
tdoor
O
u
tdoor
C
R
H/E
RLY1
D6
To Control Board
Fid 2
D4
Blower
To Control Board
O
D3
R2
R1
D7
D5
P11
W
E
Y
1
Y
2
Wat
e
r
J4
D1
ÁÂ
J1
J2
J3
P10
ÁÃ
D2
D
A
B
C
C3
J5
J6
Blower
Speed
P4
P3
AUX
Y2 G
Y1
O
2
2
Y2
Y1
Á
Ai
r
LV Circuit Board
Comfort Plus
ÁÄ
P1
P2
БЕ
В
БЖ
RP
2
AP
P
Aux.
Relay
Peak
Inputs
The W/E Jumper must be installed