M5S Burner Isolation Kit
ABOUT THE ISOLATION KIT
This kit is to adapt an M5 installation to be compatible with
thermostats with only one transformer terminal or to isolate
the transformer on the oil burner. The single R terminal of the
thermostat connects to the fused terminal of the furnace. The
existing W & C connections of the furnace are connected to
the coils side of the relay included in this kit. The NO and COM
terminals of the relay are connected to the thermostat terminals
of the oil gun (T & T). The function of this relay is to prevent the
furnace transformers and the burner transformer from being out
of phase. This kit includes one relay, two wires that lead from the
relay to the oil gun, two screws, and two terminals. See Table 1
for a complete list of parts and their part numbers.
These instructions are primarily intended to assist qualified
individuals experienced in the proper installation of these
components. Some local codes may require licensed installation/
service personnel for this type of equipment. Safety should
always be the deciding factor when installing this product and
using common sense plays an important role as well. Improper
installation of the components or failure to follow safety warnings
could result in serious injury, death, or property damage. The
installer performing this work assumes all responsibility when
installing this kit.
INSTALLING THE ISOLATION KIT
1. IMPORTANT! Make sure power is turned off to the furnace.
2. Mount the new relay into the electrical box using two screws
that are provided in the kit. See Figure 1.
3. Disconnect the two wires from the T-T terminals on the oil
gun burner. Route them up through the grommet into the
electrical box.
4. Cut the wires from step 3. To the appropriate length and strip
off ½” from the end. Crimp on the two 20" wires provided in
the kit to the NO and COM terminals on the new relay.
5. Connect the two wires (from step 4) to the coil terminals of
the relay. Connect the two 20" wires (provided in the kit) to
the NO and COM relay terminals. See Figure 1.
6. Route the other end of the wires (from the NO and COM relay
terminals) through the grommet in the electrical box.
7. Connect the 20" wires (from step 6) to their corresponding
terminals on the oil gun burner control panel. See Figure 2.
8. Affix the new wiring diagram label over the old label. Make
sure the new label covers all of the old wiring diagram.
IMPORTANT SAFETY INFORMATION
Please read all instructions before installing these components.
Pay attention to all safety warnings and any other special notes
highlighted in the manual. Safety markings are used frequently
throughout this manual to designate a degree or level of
seriousness and should
not be ignored.
WARNING indicates a potentially hazardous situation that if not
avoided, could result in personal injury or death.
WARNING:
RISK OF ELECTRICAL SHOCK
Shut off all electrical power to the unit before
performing any maintenance or service on
the system. Failure to follow this warning can
cause serious injury, re, electrical shock, or
death.
WARNING:
This kit must be installed by a qualified
service technician in accordance with these
instructions and all codes having jurisdiction.
Failure tofollow these instructions could
result in possible equipment damage, serious
personal injury, or death.
INSTALLATION INSTRUCTIONS
NEW RELAY
Figure 1. Burner Isolation Kit
DESCRIPTION
PART NUMBER QTY
Relay 624843 1
20" Wire (Gray) 1018468 1
20" Wire (Blue) 1018510 1
Screws 600255 2
Terminals 632485 2
Wiring Diagram 1018474 1
Instllation Instructions 1018473 1
Table 1. Materials List
Specifications & illustrations subject to change without notice or incurring obligations (08/17).
O’Fallon, MO, © Nortek Global HVAC LLC 2017 All Rights Reserved.
10184730
(NEW)
152
A/C
BLOWER
RELAY
364
FAN
SWITCH
HI-LIMIT
AUX. LIMIT
TRANSFORMER
L1 N
CR
24 V
115 V
GROUND
SCREW
FURNACE
ELECTRICAL BOX
TIE WIRE
3A FUSE
654321
RED (LO)
BLACK (HIGH)
BLUE (MED. HI)
WHITE
4 SPEED
BLOWER
MOTOR
C
R
G
W
ON/OFF
SWITCH
CONNECTOR
HOUSING CAP
SUPPLIED
BY INSTALLER
654321
RED (LO)
BLUE (MEDHI)
BLACK (HI)
WHITE
3 SPEED
BLOWER
MOTOR
ORANGE (MED LO)
C W
RECEPTACLE
NEUTRAL
L1
TO BURNER CONTROL
WHITE
RED
(SEE NOTE 3)
WHITE
BLUE
WHITE
BLUE
GRAY
BLACK
BLACK
ORANGE
WHITE
RED
GRAY
RED
GREEN
WHITE
GRAY
GREEN
BLACK
BLACK
GREEN
GRAY
BLUE
BLACK
ORANGE
RED
BLACK
LINE CORD
T
T
CAD
CELL
CAD
CELL
R7184B
PRIMARY
CONTROL
OIL GUN BURNER
IGNITER
L2
MOTOR
L2
L2
L1
VALVE
L2
120 Volt
10184740
08/17
BLUE W/WHITE STRIPE
WHITE
ORANGE
WHITE
BLACK
BLACK W/WHITE STRIPE
VIOLET
WHITE
IGNITION
MODULE
BURNER
MOTOR
VALVE
NOTES:
1. Incoming power must be polarized. Observe color coding.
(See furnace data label for electrical information.)
2. If any of the original wires (as supplied with the appliance) must
be replaced, use 105˚C Thermoplastic type wire or its equivalent.
3. On models M1(B,S)A and M1/M5(B,S)086 jumper wire is installed.
On all other models, cooling speed is connected to black wire.
4. A/C Heating Speeds: Refer to Table 12, A/C Blower Selection
5. If any of the original wire supplied with the appliance is replaced,
use
105˚C wire or equivalent.
6. Use copper conductors only.
7. Flash Codes: Refer to Table 9, Control Module Status Indicators.
YELLOW
YELLOW
7505B
OR
WIRING DIAGRAM
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
GRAY
BLUE
M5S Furnace Series Single Phase / 60 Hz
Figure 2. Wiring Diagram
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