19
1.800.627.4499
Integral Indirect Gas-Fired Heat Module
OPTION
FIGURE 2.3.3 CONTROL WIRING, 10:1 TURNDOWN MODULE, 200–250 MBH
SIZE
DATE
Description
REV
DRAWN
TCS
A
7/12/16
HM/HD Series -
“ MB “ Control Wiring –
115V
0
REVISED
SCALE
1 : 1
WS-MB-SC30SM2A-CC5-T06-
115V-1 STG
SHEET
1 of 1
50 Heatco Ct.
Cartersville Ga. 30120
770-529-2000
IGNITION CONTROL
BLU
WHT (Com)
L1
L2
L1
IND
BLK
YEL
BLK
BLK
3
BLK
WHT
T1
T2
ORG
BLU
4
115 VAC
24V
XFMR 1
ORG
ORG
ROLL OUT
SWITCH (A)
PUR
Capable Controls
–
5 Series Ignition Control
WHT
FLAME
SENSOR
ROR
IGNITER
SPARK
YEL
BLU
24VAC Alarm
Indicator
YEL
YEL
COM
Gas Valve
M
YEL
YEL
R
WHT
WHT
BLK
240T6T06
SC30-SM2AN
BLU
Factory Jumper
BLU
Control Panel 2
N
L
F
L
S1 SRTN
T5
T6
C
40 VA
T2
COM
T' STAT
PUR
HI LIMIT (1)
Series 5 Ignition Control
SPARK
MV
24V
APS
T-Stat
SENSE
Gnd
(V2)
Gnd
Syst.
Alarm
HI LIMIT (2)
PUR
5
BLU
BLU
GRY
GRY
BLU
Maxitrol
SC30-SM
T15
T14
T4
T3
T9
T8
T12
T13
T11
T10
PUR/W
PUR/W
T2
T1
5
6
RED/W
RED/W
-
+
0
–
10 VDC
Input
RED
BLK
BLK
RED
M420
Mod
Valve
BLK
YEL
24V
R
C
3
4
40VA
BLU
XFMR 2
BLU
WHT
FLAME
SENSOR
ROR
IGNITER
SPARK
T2
T1
SC30-SM2AN
PUR/W
PUR/W
Series 5 Ignition Control
SPARK
MV
24V
APS
T-Stat
SENSE
Gnd
(V2)
Gnd
Syst.
Alarm
24VAC Alarm
Indicator
YEL
YEL
COM
2 STG GAS VALVE
LO
HI
BLU
Control Panel 2
PUR
5
BLU
6
BLU
GRY
RED/W
RED/W
T10 T11
YEL
YEL
SC30-SM2AN
T9
T8
Se
ct
io
n
A
Se
ct
io
n
B
ROLL OUT
SWITCH (B)
ORG
Ignition Control (B)
L1
IND
ORG
ORG
APS-3
ORG
SC30-SM TERMINAL
CONNECTION
T2
CUSTOMER PROVIDED COMPONENT
CUSTOMER / FIELD WIRING
INTERNAL TERMINAL CONNECTION
1
EXTERNAL TERMINAL CONNECTION
3
LEGEND:
Customer
Interlocks
(See Note)
Note:
If Customer safety interlocks
provided, wire in series from Terminal 3 to
T1 & remove factory jumper
36J22
36J54
Models: H(D,M)A-150, 200, 250
H(D,M)B-180, 200, 270
H(D,M)G-200, 250
7062-5903
DRAFT NDUCER
WHT (Com)
APS-1
(Low)
APS-2
(Hi)
SYSTEM REQUIREMENTS
NOTE: Module-specific wiring schematics are provided with each unit and can be found in the document
package shipped with the unit.
NOTE: If any of the original wire as supplied with the appliance must be replaced, it must be replaced with wiring
material having a temperature rating of at least 105 ˚C.