Thermal Solutions EVCA SERIES Installation, Operating And Service Instructions page 28

GND TO
CHASSIS
120V-1PH-60HZ
SEE FIGURES 9a&9b FOR
SUPPLY POWER WIRING
ALARM SILENCE
PUSH BUTTON
ALARM BELL
(2)
TO VSD
TERMS.
(1)
1&2
DRY CONTACTS
FOR BOILER
STATUS
INDICATION
A2 A1
BOILER PUMP
M
PUMP MOTOR STARTER
5 9
CRA3
AND OVERLOAD RELAY
96 95
LT
BLOCKED AIR FILTER
NO C
SWITCH AND LIGHT
115V TO 24V
115V TO 24V
TRANSFORMER TRANSFORMER
GND TO
CHASSIS
OUTLET
SENSOR
INLET
SENSOR
PROG. SPARE OUTPUT
(COLD AIR DAMPER,
SYSTEM PUMP BACKUP
OR ALARM)
SYSTEM PUMP
LOCKOUT INDICATOR
MIXING VALVE
ACTUATOR
1 2 3
LINE TYPES:
FACTORY WIRING, LINE VOLTAGE
FACTORY WIRING, LOW VOLTAGE (SEE NOTE 2)
FACTORY WIRING, SPECIAL IGNITER
FIELD WIRING, LINE VOLTAGE
FIELD WIRING, LOW VOLTAGE
OPTIONAL WIRING
Q7800H1009 INTERNAL WIRING
G G
L2 2
FUSE
L1
K3
29
2
4
SENSE
ALARM RELAY K2
3 K2
LINE VOLTAGE ALARM
30
31
4 K3
BLOWER MOTOR
32 K5
33
5
34
35 K5
K5
36
AUXILIARY RELAY
37
K3
38 6
K4
21
39
K4
40
7
41
K6
43
44
9
MAIN FUEL
45
VALVE(S)
K6
46
3
2 8
3
2
10
3
3
47
G
K2
48
49
2
HONEYWELL Q7800H
FLAME SAFEGUARD SUBBASE
50
AND
PROGRAMMER CONTROL
RM7896D 1027
C
PR
BO
BC
BI
C
C
C
9
13 14
CRA
SO
1
5
9
13 14
CRA SP
2
5
13 14
CRA
BP
3
9
13 14
CRA VI
SPARE
4
5
9
13 14
CRA
LO
5
5
CONTROL RELAY OPTIONS
MS
MR
REMOTE CONTROL
C-
OR
REMOTE SETPOINT
C+
0-10 VDC INPUT
(VALID INPUT SIGNAL RANGE IS 1-9VDC)
SEE NOTE 6
RJ11
2
3
10
BURNER
K1 K1
THERMAL FUSE
OPTIONAL
11
SENSE
11
LOW WATER CUTOFF
SEE NOTE 3
12
SENSE 10
BURNER ON/OFF 13
SWITCH
14
9
SENSE
15
WATER FLOW SWITCH
16
8
SENSE
17
GAS PRESS SWITCHES
NC
18
7
SENSE
19
HIGH LIMIT
NC
20
21
22
6
SENSE
COMBUSTION AIR
FLOW
23
24
PRIMARY
25 GAS RATIO
5
SENSE ACTUATOR
MAIN FUEL VALVE
L
26
E/H
2
N
42
27
2
28
2
12
K1 3
11
CALL FOR
HEAT 10
9
Pin 7 8
7
6
5
Pin 1 4
24VAC -
2
24VAC + 1
THERMAL SOLUTIONS
BOILER CONTROL
(TSBC)
24VAC - AL
FUSE
CS
24VAC +
10
9
8
7
Pin 6
6
CA HL GP WF
5
OO V- V+ P- P+
4
Pin 1
3
2
1
LC
CH
O+
12 VDC
O+
0.5A MAX TOTAL
FOR SO, SP, BP,
O-
V1, & LO
O-
R+
R+
R-
R-
DP
4-20 mA DC LR
CONVERTED TO
2-10 VDC
12 VDC
RO
1
(FIELD SUPPLIED
4
CONTACTS/SWITCHES)
LOCAL
C
SI
C
GND TO RJ45
CHASSIS
28
P
2
1
MM 750-
MT-120
3
LOW WATER
VESTIBULE
CUTOFF
THERMAL FUSE
OPTION
(SEE NOTE 1)
5
BURNER ON/OFF SWITCH
WATER FLOW SWITCH
NO C
HIGH AND LOW GAS
HIGH LOW
PRESSURE SWITCHES
C NO C
HIGH LIMIT AND OPERATING
HIGH LIMIT OPERATING LIMIT
TEMPERATURE SWITCHES
NC
C C
UNUSED OPERATING LIMIT
MANUAL AUTO
COMBUSTION AIR FLOW
SWITCH
NO C
SECONDARY
GAS
VALVE
L
VENT VALVE
(OPTIONAL)
N
GND TO
CHASSIS
INTERRUPTED
IGNITION PILOT
GAS VALVE
IGNITION XFMR
IGNITION PILOT
UV SCANNER
COMBUSTION BLOWER
SPEED CONTROL
CIRCUIT
VARIABLE
SPEED DRIVE
AC Tech SCF
(38)
1
2
TO K3
5 RELAY ON
FLAMESAFEGUARD
12
SUBBASE
TERM. 37 & 38
2
2 (37)
OUTSIDE AIR OUTSIDE AIR
SENSOR RESET OPTION
REMOTE SYSTEM
SENSOR
DOMESTIC HOT WATER PRIORITY
DOMESTIC HOT WATER PRIORITY
LOCAL/REMOTE(REMOTE CONTROL OR REMOTE SETPOINT)
LOCAL/REMOTE(REMOTE CONTROL OR REMOTE SETPOINT)
REMOTE ON/OFF(ENABLE/DISABLE)
2
SEE NOTE 5
3
REMOTE
SPARE INPUT
SPARE INPUT