15
Groundtherm - Ground Source Heat Pump -
Installation
INTERNAL GROUNDTHERM CIRCUIT DIAGRAM
3.5 AND 5 UNITS
NOTE: ALL EXTERNAL EQUIPMENT TO BE FUSED TO MANUFACTURERS
RECOMMENDED FUSE SIZES
CONTACTS SHOWN IN DE-ENERGISED STATE BUT WITH
REFRIGERATION CIRCUIT FULLY CHARGED WHERE CONTACTS
ARE MARKED (N/O) OR (N/C) ON CIRCUIT DIAGRAM ABOVE
CONDITIONS APPLY
COMPRESSOR
TB
9
TB
5
TB
4
TB 2
TB 6
6
A2
A2
A1
A1
R2
R2
R3
POWER FACTOR
CAPACITOR
SMART STARTER BUILT IN DELAYS
1. ON POWER UP/INTERRUPTION OR
GO SIGNAL OFF COMPRESSOR MOTOR
DOES NOT START UNTIL 3 MINUTES
HAVE ELAPSED.
2. IF COMPRESSOR MOTOR DOES NOT
START A FURTHER 5 MINUTES
NEEDS TO ELAPSE BEFORE RESTART
BY SMART STARTER IS ATTEMPTED
RUN
CAPACITOR
LIVE GO SIGNAL
FOR HOT WATER
LIVE GO SIGNAL
FOR ROOM HEATING
LIVE PRIME
FOR GROUND PUMP
LIVE GO SIGNAL
FOR GROUND PUMP
NEUTRAL
FOR GROUND PUMP
POWER LAMP
(RED)
NEUTRAL
LINK FOR SIMULTANEOUS
HEATING AND HOT WATER
LIVE OUTPUT
FOR HEATING
TB13
TB14
TB15
TB
22
PROGRAMMER LIVE
LAMP
(RED)
LIVE FROM
PROGRAMMER
LIVE GO FOR HEATING
PUMP ON Y+W PLAN
MAINS ON/OFF
30 SEC DELAY
ON TIMER
HP SWITCH
HEAT PUMP (FAULT) LAMP
(AMBER)
LP SWITCH
MANUAL
AUTO
(N/O)
3
(N/C)
9 (COM)
(BREAKS TO'L'ON
PRESSURE RISING)
(BREAKS TO'H'ON
PRESSURE FALLING)
L
L
N
N
5
2
8
R2
R3
7
4
4
7
R2
A2
A1
R1
4
7
1
3
9
6
RESISTOR
SMART STARTER
FOR COMPRESSOR
ON
N
L1
R
N
S
RC
100 OHM
R1
R1
1
5A
FUSE
6
R3
9
15
18
A1
A2
(N/C)
(N/C)
)
O
/
N
(
)
O
/
N
(
(COM)
(COM)
(N/C)
(N/O)
(COM)
(N/O)
(N/O)
(COM)
(N/C)
(N/O)
(N/O)
HP SWITCH
C
H
AUTO
(N/C)
(COM)
C
H
C
L
L
H
(COM)
(COM)
(N/C)
(N/C)
(N/O)
(N/O)
(COM)
(COM)
TB
11
TB
12
TB
10
TB
23
TB
1
SMART STARTER
(BREAKS TO'L'ON
PRESSURE RISING)
L
(N/O)
6(6)
4(9)
OUT1
1(12)
L
2(11)
N
DIG STAT
1 STAGE
MAKE ON FALL
PROBE
(1)10
11(2)
HEATING
RETURN
WATER STAT
ROOM HEATING
(COM)
(N/O)
