HT# 059296-00A
PLL Installation and Operation Manual
21
3-PuMP 3-CaLL 3-FLOW PIPIng
aLerT
Heat-Timer is aware that each installation is unique. Thus, Heat-Timer is not responsible for
any installation related to any electrical or plumbing diagram generated by Heat-Timer. The
provided illustrations are to demonstrate Heat-Timer’s control operating concept only.
Boiler 1
Boiler 2
Flow
Switch 1
Pump 1
Flow
Switch 3
Flow
Switch 2
Pump 3
Pump 2
Boiler 3
1 2 3 4 5 6 7 8
On
1 2
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
10 11 12 13 14 15 16 17 18 19
L N
RS-485
VALVES
A1
A2
A3
PWR
24
20
22
21
23
25
29
27
26
28
30
CAUTION:
Risk of Electric Shock. Use Copper Conductors Only.
Wire all circuits as Class I or Electric Ligh and Power Circuits.
2 RESISTIVE, 120VAC
1/4 HP, 120VAC 60Hz, Pilot Duty 80VA, 120VAC
OUTPUT RATINGS:
ALARM 2
ALARM 3
COM
POWER
ALARM 1
PUMP 2
PUMP 3
VALVE 1
VALVE 2
PUMP 1
ALARM
RESET
PLL
PUMP LEAD-LAG
MAXIMUM 6A TOTAL FOR ALL CIRCUITS
INPUT RATINGS: 120VAC 60Hz, 12VA MAX.
DIP SWITCHES
31
C1
C2
C3
F1
F2
F3
PUMP CALL
FLOW INPUTS
ALARMS
V1
V2
L
N
L
N
6 7 8 9
P2
P3
L
N
4 5
P1
L
N
L
N
PUMPS
OUTPUT (SOURCING)
3
G
MeCHanICaL
