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WattMaster WHP Section 2
Installation and Wiring 2-7
R (24 VAC By Others)
WHP Loop Controller Expansion Board
WHP Loop Controller Expansion Board
Compressor Enable
Main Pump
Standby Pump
Alarm Indicator
R10
R9
R8
R7
R6
R5
R4
R1
R2
R3
R11
Fire Alarm Contact (N.C.)(See Note 5)
Request to Run Contact (N.O.)
4.)When a Water Pressure Transmitter
Is Used, a 250 Ohm Resistor is
Installed Between AIN3 & GND and
The Pull Up Resistor PU3 is
Removed.
Line Voltage
See Note 1
Required VA For Transformer
Loop Controller = 8VA Min.
N.C. Pilot Duty Relays
(By Others)
N.C. Pilot Duty Relays
(By Others)
Relay Contacts
(By Others)
24VAC
GND
Local Loop RS-485
9600 Baud
Connect To Next WHP Controller
And/Or MiniLink On Local Loop
Notes:
1.)24 VAC Must Be Connected So
That All Ground Wires Remain
Common.
2.)All Wiring To Be In Accordance
With Local And National Electrical
Codes And Specifications.
Outside Air
Temp. Sensor
Return Water
Temp Sensor
Supply Water
Temp Sensor
A
IN1
A
IN2
A
IN3
A
IN4
GND
A
OUT1
Y
S101784
4
ANALOG IN MOD I/O BD.
4
RLY IO BD.
4
RLY IO BD.
YS101790
YS101790
2
4
V
A
C
G
N
D
-
+
Proof of
Flow
Manual
Reset
Phase
Loss
Optional
Modulating Heat
24 VAC
24 VAC
Heating/Cooling #4
Heating/Cooling #4
Heating/Cooling #3
Heating/Cooling #3
Heating/Cooling #2
Heating/Cooling #2
Heating/Cooling #1
Heating/Cooling #1
R
L
Y
1
D
1
D
2
D
3
D
4
D
5
C
X
3
RAM
E
PROM
C
3
C
2
U6
P
H
I
L
I
P
S
C
X6
C1
CX2
U2
U3
P
AL
C
X4
U4
T
UC-5R PLUS
Y
S101816 REV. 2
V1
V2
V3
V5
V4
T
B2
4
N
ETWORK
TOKEN
16
32
8
SW1
ADD
2
1
A
DDRESS
V6
POWE R
GND
24VAC
L
1
D
1
6
R
6
C
9
S
C1
R
1
1
U
1
1
MC34064A
D
1
3
C
16
993
6
V
R2
7824CT
M
T
B4
R27
C
13
R
1
0
V
R1
C19
C
1
8
N
E5090NPB3192
0PS
U
8
C
X
8
U9
X
1
R
7
D
1
0
R
13
D
12
C7
CX10
U
10
CX12
U
12
U
14
CX14
P
J
3
PJ2
PJ1
EXPANSION
PRESSURE
SENSOR
T'STAT
C17
D15
R26
C20
R
25
R
24
R
22
U15
CX13
U13
C
15
R
19
R
15
C
14
D
1
8
D
1
7
PU1
PU2
PU3
PU4
PU5
PU7
D6
D7
D9
D11
D14
C12
C10
0
-
5
V
D
C
0
-
1
V
D
C
JP1
C
1
1
X2
GND
TB3
INPU TS
GND
GND
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
AOUT1
AOUT2
AIN7
R
N
4
1
RN5
RS-485
CX5
U5
R
TB1
SHLD
T
COMM
COMM
R
N
3
1
RN1
U1
CX1
1
LD6
COMM
PWR
LD7
LED1
LED2
LD9
LD8
R1
U7
RV1
VREF ADJ
R28
+VREF
5.11V
TEST POINT
EWDOG
D19
R
N
2
1
COM1-3
COM4-5
R5
R4
R3
R2
R1
R
L
Y
2
R
L
Y
3
R
L
Y
4
R
L
Y
5
CX15
(
1 MEG)
HH
P1
C21
Optional Pressure
Transmitter
See Note 4
5.)If a Fire Alarm Contact is Not
Connected to AIN1 on The Analog
Expansion Board, Then a Jumper
Must Installed Between AIN1 and
GND.
3.)All Communication Wiring To Be
2 Conductor Twisted Pair With
Shield. Use Belden #82760 Or
Equivalent.
-
+
Pump VFD
WHP Loop Controller Wiring