AG-FAEH-06

AG-FAEH-06
Installation Instructions
Smart Heat
Heat Pump
Heater Packages
KFAEH
NOTE: Read the entire instruction manual before starting the installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS
Installing and servicing of heating equipment can be hazardous due to electrical components. Only trained personnel should install or service
heating equipment.
Untrained personnel can perform basic maintenance functions such as cleaning and replacing filters. All other operations should be performed by
trained personnel. When working on heating equipment, observe precautions in literature, on tags, and on labels attached to the unit.
. When you see this symbol on the unit and in instructions or manuals, be alert
Recognize safety information. This is the safety-alert symbol
to the potential for personal injury.
Understand the signal words--DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury
or death. CAUTION is used to identify unsafe practices, which would result in minor personal injury or product and property damage.
Follow all safety codes. Wear safety glasses and work gloves.
WARNING: Before beginning any installation or modification, be sure the main electrical disconnect switch(es) is in
the OFF position. TAG THE DISCONNECT WITH A SUITABLE WARNING LABEL. Electrical shock can cause personal injury
or death.
INTRODUCTION
This instruction covers the installation of Smart Heat electric heater packages KFAEH2201H10, KFAEH2301H15, and KFAEH2401H20 into
FA4, FB4, and FC4 fan coils. Check unit rating plates for compatibility of fan coil and electric heater combinations. See Table 1 for heater package
usage.
NOTE: The Smart Heat option is for use only on heat pumps, and is not approved for any other application.
DESCRIPTION AND USAGE
The Smart Heat electric heater package options allow the addition of accessory heaters and related controls to models FA4, FB4, and FC4 Fan
Coils with heat pump outdoor units only. See Table 1 for heater package usage.
The Smart Heat electric heater package options enhance performance of heat pump by managing the electric heat. The heating elements are staged
on individually as required to maintain dwelling set point temperature. The controller will adjust the indoor blower speed tap to reduce airflow
in the ultra comfort mode.
The controller is not a substitute for good installation and ductwork practices. All ductwork should be free of air leakage, and insulated both inside
and outside the conditioned space. Performance may not be satisfactory if good practices are not followed.
NOTE: Electric heaters require a minimum airflow. See Table 2 for minimum motor speed selection before installing. There is a 1-in. minimum
clearance to combustible materials for the first 36 in. of ductwork on all fan coils with 20-kw packages, and 024, 033, and 038 size fan coils with
15-kw heater packages.
INSTALLATION
PROCEDURE 1—INSTALL ELECTRIC HEATER ASSEMBLY
NOTE: Ensure heater coils are not deformed or damaged during heater installation.
1. Make sure power is off.
2. Remove blower access panel of fan coil unit.
3. Disconnect power leads, pigtail leads (black and yellow), fan leads (yellow, red, blue, and black), primary and secondary transformer leads,
and all low-voltage control wires. Remove existing printed-circuit board (PCB). Remove existing heater package or cooling control plate
from fan coil. (See Fig. 1.)
4. Insert heater assembly into front of fan coil until element rods engage holes in heat shield.
5. Attach heater control plate to fan coil using 2 screws. (See Fig. 1.)
Form:
AG-FAEH-06
Cancels:
AG-FAEH-02
Printed in U.S.A.
5-97
Catalog No.
63FA-EH0
INSERT FUSE
BOX TAB HERE
COVER PLATE
OR
KNOCKOUT
SINGLE-CIRCUIT
GROUND LUG
FUSE BOX TAB
DIMPLE
FUSE BOX
DUAL-CIRCUIT
GROUND LUG
SLOTS
HEATER/CUTOUT
COVER
FUSE COVER
WIRE TIE
(REMOVE ON
LARGE FAN COILS)
A94126
Fig. 1—Installation of Heater Package and Printed-Circuit Board
PROCEDURE 2—ATTACH FUSE BOX
For 15- and 20-kw fused heater:
1. After installing heater assembly, attach fuse assembly to side of fan coil unit by inserting fuse box tab between insulation and left side of
unit and fan deck.
2. Mount front of assembly to side flange with 2 screws provided. On fan coil units size 042 and larger, remove wire tie that shortens wire
length between heater and fuses.
3. Close cover by engaging dimples in fuse box. (See Fig. 1.)
PROCEDURE 3—PRINTED-CIRCUIT BOARD AND BRACKET INSTALLATION
CAUTION: Avoid direct contact with the PCB. The PCB is a static sensitive device. Handle by the sheet metal bracket
only. Static discharge can damage the PCB.
1. Install control board assembly into slots on blower deck. (See Fig. 1.)
2. Install screw through mounting bracket into lip of fan coil and tighten.
→ PROCEDURE
4—ELECTRICAL CONNECTIONS
Refer to unit instructions for recommended wiring procedures. Install wiring in accordance with all applicable local and national codes. See Table
3 for recommended wire and fuse sizes. Harness contains both 24-v control, and high-voltage wiring.
1. Connect heater harness plug to receptacle on PCB. (See Fig. 2.) A secure connection must be made between plug and receptacle. Plug will
interlock with receptacle when properly seated.
2. Connect yellow common fan lead to PCB fan terminal F1.
3. Connect desired cooling speed to PCB terminal HI.
4. Connect lower speed desired for reduced heat pump speed to terminal LO. (See Tables 2, 4 and 5.)
5. Connect unused fan speed tap to dummy terminal F2.
6. For 24-v control system connections to unit PCB:
Refer to unit wiring instructions and diagrams for recommended wiring procedures. (See Fig. 3, 4, 5, and 6.) Use 18 gage thermostat wire
for low-voltage control field wiring. When over 100 ft, increase wire gage.
NOTE: PCB staging is automatic and controls its own algorithm. However, if local codes require using an outdoor thermostat (see applicable
outdoor unit Installation Instructions), break jumper wire JW1 on PCB. (See Fig. 2.) All heaters are limited to 2 levels of heat with jumper JW1
cut. (See Table 6 for capacity.)
—2—
Table 1—Accessory Heater Usage
ELECTRIC HEATER
PART NO.
KFAEH2201H10
KFAEH2301H15
KFAEH2401H20
MODELS FA4, FB4, FC4
SIZE
018-036
024-048
030-070
DESCRIPTION
10 kw, Non-Fused
15 kw, Fused
20 kw, Fused
Table 2—Minimum Motor Low-Speed Tap Selection
FAN COIL
FA4, FB4, FC4
018
024
030
033
036
038
042
048
060
070
HEATER KW
15
—
Med†
Low
Med†
Low
Low†
Low
Low
—
—
10
Med*
Low
Low
Low
Low
—
—
—
—
—
20
—
—
Med†
Low†
Low†
Low†
Low†
Low†
Low†
Low†
*High speed with 208-v.
†Requires a minimum 1-in. clearance to combustible materials for the first 36 in. of ductwork. On 2-speed fan models, low speed may be used in place of medium (Med)
speed.
7. High-voltage supply connections to heater:
Unit wiring label is for 230-v operation. On transformers with primary leads, connect primary transformer black lead to T1, blue lead to
T2 and red lead to T3. When using 208v, connect red primary lead to T2 and blue lead to T3. On transformers without primary leads, use
the yellow and black pigtails and connect to the appropriate voltage-labeled terminal on transformer.
8. Connect secondary transformer wires to PCB terminals SEC1 and SEC2. (See Fig. 2.)
NOTE: Heater supply circuit wire size and overcurrent protection must comply with National Electric Code (NEC) and Underwriters Laboratories
(UL) "Branch Circuit" requirements. (See Tables 3, 4, and 5.) Wires and overcurrent protection, integral to the heater, are not required to meet
Brand Circuit requirements. Internal circuit protection of 60 amps maximum is acceptable.
a. Nonprotected heaters.
(1.) The 10-kw heater can be wired for single supply only. Supply circuits connect to heater pigtail leads.
(2.) The 10-kw heaters can use separate field-installed, factory-authorized disconnect kit KFADK0101DSC which installs in fan coil.
b. Fused heater.
(1.) The 15- and 20-kw heaters can be wired for single- or dual-supply circuits.
(2.) Single supply circuit wiring requires a factory-authorized, single point adapter kit KFASP0101SPK.
9. Ground Connections.
a. For non-protected or single-circuit heaters, 1 equipment ground connection is provided on fan coil units. (See Fig. 1.)
b. For 15- and 20-kw fused heaters, an additional ground lug is provided on fuse mounting bracket for dual-circuit grounding. (See Fig.
1.)
10. Mode Selection.
a. In some cases it is desirable for the PCB to operate in efficiency mode. This is accomplished by clipping jumper JW2. (See Fig. 2.)
Jumper JW2 is labeled. Clip jumper for high speed fan only. In this mode, the PCB only energizes the HI speed tap selection. With the
jumper JW2 cut, the fan speed tap terminal LO becomes a dummy terminal.
b. In some instances when fan coil heater calls for a minimum speed selection of MED (blue) and desired cooling speed is MED (blue),
fan speed tap MED (blue) should be located on PCB fan terminal labeled HI, and the JW2 jumper must be cut. Store unused fan taps
on terminals DUMMY and LO.
c. When 018 size fan coil unit is used on 208v, black speed tap must be connected to HI and JW2 must be cut.
11. Accessories.
Use accessory kit KFAIR0101ACR to attach electronic air cleaner (EAC) or humidifier. (See Fig. 9.) Follow accessory kit Installation
Instructions.
PROCEDURE 5—ATTACH WIRING DIAGRAM AND RATING LABEL
1. Attach new wiring diagram label to fan coil blower. Completely cover old wiring label.
2. Attach new heater rating label over existing electrical information rating label located on front access door of fan coil unit.
PROCEDURE 6—INSTALLATION VERIFICATION
1. After completion of heater installation, check to ensure proper connections and routings have been made.
2. Ensure all electrical covers are in place, and proper labels have been applied.
3. Reinstall blower access door before turning on unit power.
—3—
CEPL130121-01
MOV1
FS1
C4
C15
C11
R17
LED1
R2
W2D
W 2T
Z3
R5
R40
R18
R11
U2
O
R16
R19
R10
C9
C8
JW6
G
R12
R20
C12
C10
R13
U1
W3
C7
R15
JW4
JW5
R14
R26
R29
E
CLIP JUMPER FOR
HIGH SPEED FAN ONLY
C
B
Q1
Q2
B
C
E
D4
E D1
C
B
Q3
K2
6
DUMMY
T2
9
240 VAC
F1
T3
COMMON
®
HSCI
FAN
DUMMY
JW2
(HIGH FAN
ONLY WHEN
CUT)
AUX+
P1
8
7
LR40061
5
4
3
®
Yo
AUX–
2
R27
JW8
R4
D3
D2
1
JW1
(CUT WHEN
OUTDOOR
THERMOSTAT
IS USED)
JW1
Z2
R41
K1
R36
R37
Z4
1
R38
R22
Y
R8
C13
R21
R9
JW7
C3
CESS430121-01A
R7
R6
1
T1
C
Z5
C2
JW2
Z1
C14
R39
D5
R23
C6
XFORM
LOW VOLTAGE
TERMINAL
BOARD
R
R3
C5
R28
R25
R24
ST1
R1
R30
JW3
SEC1
240
VAC
RECEPTACLE
CES0130025 –
SEC2
HI
LO
F2
K3
A94127
Fig. 2—Printed-Circuit Board (PCB)
PROCEDURE 7—SMART HEAT OPERATION
→ A.
Cooling
The Smart Heat option controls the cooling mode in the same manner as conventional heat pumps are controlled. The fan has a 90 sec blower off
delay at the end of a cooling cycle.
→ B.
Heat Pump Heating
The Smart Heat option does not control heating in the conventional method. The PCB energizes the compressor 30 sec before the indoor fan is
energized. This allows the indoor coil to heat up eliminating cold-blow on start-up.
The electric heat is staged-on to allow continuous operation of the heat pump and electric resistance heat below the balance point (below the point
where the heat pump cannot maintain dwelling temperature without supplemental heat) independent of outdoor thermostats.
Although the PCB has provisions for an outdoor thermostat, it is not needed for staging. On cycle down, the indoor fan remains on 60 sec to recover
heat stored in the indoor coil.
C. DEFROST
The Smart Heat PCB stages the correct amount of supplemental heat during defrost. If too much heat is added, the system will stay in defrost for
the completion of the defrost cycle even though the thermostat is satisfied. On the next cycle, 1 less element will be energized during the next
defrost period.
D. DIAGNOSTIC LED
The PCB of the Smart Heat option heater package contains a microprocessor which controls the fan operation, fan speed, outdoor unit, and heater
elements. For troubleshooting, a service LED indicates the condition of the PCB. See Table 7 for LED flash codes.
PROCEDURE 8—OPERATING AND INSTALLING CHARACTERISTICS
A.
PCB Component Layout, Description, and Function
1. Low-voltage terminal board is used to connect indoor thermostat to 24-v low side of transformer, and to serve as a junction between indoor
thermostat and outdoor section. (See Fig. 2.)
—4—
Table 3—Electric Heater Package Data
WATTS @ 240V: 9000
KFAEH2201H10
230-v
208-v
SINGLE CIRCUIT
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
35.9
48.9
50
6
32.5
44.6
50
6
102.0
101.1
WATTS @ 240v: 15,000
KFAEH2301H15
230v
208v
SINGLE CIRCUIT
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
59.9
81.7
90
4
54.2
74.6
80
4
91.4
90.5
DUAL CIRCUIT
WATTS @ 240v: 11,000
L1/L2
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
L3/L4
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
43.9
54.9
60
6
39.7
49.7
50
6
90.9
90.9
WATTS @ 240v: 4000
16.0
26.8
30
10
14.4
24.9
30
10
70.8
69.0
WATTS @ 240v: 20,000
KFAEH2401H20
230v
208v
SINGLE CIRCUIT
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
79.9
106.7
110
2
72.2
97.2
100
3
111.1
87.4
DUAL CIRCUIT
WATTS @ 240v: 10,000
L1/L2
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
L3/L4
HEATER AMPS
MCA
MOP
75°C WIRE SIZE (AWG)
MAXIMUM WIRE LENGTH
(FT)
39.9
56.8
60
6
36.1
52.0
60
6
87.9
86.7
WATTS @ 240v: 10,000
—5—
39.9
49.9
50
6
36.1
45.1
50
6
100.0
100.0
TYPICAL
HEAT PUMP
THERMOSTAT
INDOOR
CONTROL
BOARD
OUTDOOR
SPLICE
R
R
R
C
C
C
Y
Y
G
G
O
O
O
E
W2D
W2
W2
W2T
L
W3
SINGLE-SPEED HEAT
PUMP DEFROST BOARD
JW1
Y0
Y
L
A94128
→Fig. 3—System Wiring Diagram Using A Typical Indoor Thermostat, With No Outdoor Thermostat
INDOOR
CONTROL
BOARD
MODEL HP
THERMOSTAT
OUTDOOR
SPLICE
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
COOL / HEAT
STAGE 1
Y/Y2
Y
FAN
G
G
RVS COOLING
O/W2
O
O
W2D
W2
HEAT STAGE 2
W/W1
W2T
SINGLE-SPEED HEAT
PUMP DEFROST BOARD
JW1
W3
Y0
Y
A97217
→Fig. 4—System Wiring Diagram Using A Corporate Model Heat Pump Indoor Thermostat, With No Outdoor Thermostat
—6—
TYPICAL
HEAT PUMP
THERMOSTAT
INDOOR
CONTROL
BOARD
OUTDOOR
SPLICE
R
R
R
C
C
C
Y
Y
G
G
O
O
O
E
W2D
W2
W2
W2T
L
W3
SINGLE-SPEED
HEAT PUMP
DEFROST BOARD
CUT
JW1
Y0
ODT
Y
L
A94129
→Fig. 5—System Wiring Diagram Using A Typical Indoor Heat Pump Thermostat, With 1 Outdoor Thermostat
MODEL HP
THERMOSTAT
INDOOR
CONTROL
BOARD
OUTDOOR
SPLICE
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
COOL / HEAT
STAGE 1
Y/Y2
Y
FAN
G
G
RVS COOLING
O/W2
O
O
W2D
W2
HEAT STAGE 2
W/W1
W2T
CUT
JW1
SINGLE-SPEED HEAT
PUMP DEFROST BOARD
ODT
W3
Y0
Y
A97218
→Fig. 6—System Wiring Diagram Using A Corporate Model Heat Pump Indoor Thermostat, With 1 Outdoor Thermostat
—7—
Table 4—Color Code For Motor Lead Wires
MOTOR SPEED TAP
Common
High
Medium
WIRE COLOR
Yellow
Black
Blue (3-speed only)
Red (Blue — 2-speed
motors)
Low
Table 5—Fan Motor Speed Taps
UNIT
FA4A018-036
FA4A042-070
FB4A/FC4B018-070
MOTOR SPEED
2
3
3
COOL SPEED
High
Medium
Medium
a. R is used to connect secondary side of transformer to thermostat and outdoor unit. R is fused.
b. C is used to connect transformer secondary common for thermostat and outdoor unit.
c. Y is input signal from thermostat signaling heat pump operation.
d. G is input signal from thermostat, signaling continuous fan operation.
e. O is input and junction terminal for reversing valve signal.
f. W2D is input from outdoor unit (heat pump), signaling control board that heat pump is in defrost.
g. W2T is input from thermostat signaling for supplemental or emergency heat.
h. W3 is input from outdoor thermostat. JW1 connects W3 to W2T as wired at factory. This input is used only if an outdoor thermostat
is required by local codes.
i. Yo is output from control board to energize outdoor unit (heat pump) contactor.
2. Jumper wires (JW1 and JW2)
a. JW1 connects W2T to W3 to limit staging of electric heat with use of an outdoor thermostat. See Table 6 for staging. PCB controls
staging to extent that this feature is unnecessary unless required by local codes or regulations.
b. Cutting JW2 sets the PCB in efficiency mode. With JW2 cut, there is no loss of performance due to reduced indoor blower speed when
heat pump is operating near balance point. This jumper may be required to be cut if selected cooling fan speed is same as required
minimum motor LO speed tap selection as listed in Table 2. With JW2 cut, fan terminal LO becomes a dummy terminal.
3. A fuse is used to protect low-voltage transformer and PCB.
4. AUX+ and AUX- are connections for air conditioning accessories (EAC, humidifier, etc.).
5. F1, F2, HI, and LO are connections for indoor fan.
6. The 9-pin receptacle connects heater package wiring harness.
7. SEC1 and SEC2 are used to connect secondary side of transformer to PCB. SEC1 is connected to equipment ground.
B. Transformer
The proper wiring of the transformer on the PCB is illustrated in Fig. 9.
NOTE: Terminals T1, T2 (if used), and T3 are wired to primary or high side of transformer. The 208-v terminal (or blue wire if the transformer
has primary leads) is used on T3 for 208-v applications. The 230-v terminal (or red wire) is used on T3 for 230-v applications. The T2 is a dummy
terminal.
C.
Electric Heat
1. When thermostat calls for electric heat, 24-v signal is sent to PCB through W2T. PCB will energize first stage of electric heat.
2. First 2 stages will come on if W2T and Y are energized at same time. After each 10 minutes W2T is energized, another stage of electric
heat will energize.
3. As W2T is de-energized, electric heat will stage down in 8 minute steps with exception of first step. First step will be on only half as long
as it was prior to W2T de-energizing.
4. When W2T is energized by itself, JW1 is cut, and an outdoor thermostat is used and is open. Staging is limited as listed in Table 6.
5. When both W3 and W2T are energized without JW1 being cut, or with outdoor thermostat closed, system operation will stage heat up to
maximum level if signal is energized for proper amount of time.
6. If only W3 is energized, there is no effect on the PCB. No heat will be energized.
D. Accessories
Terminals AUX+ and AUX- are energized with 24vdc when fan is energized. The accessory kit KFAIR0101ACR is used to connect an EAC or
humidifier.
NOTE: Loads cannot be connected directly to AUX+ and AUX-. Use the specified kit only.
—8—
TYPICAL
HEAT PUMP
THERMOSTAT
INDOOR
CONTROL
BOARD
OUTDOOR
SPLICE
R
R
R
C
C
C
Y
Y
G
G
O
O
O
W2D
W2
E
SHR
W2
SINGLE-SPEED
HEAT PUMP
DEFROST BOARD
W2T
CUT
JW1
L
SHR ODT
W3
Y0
Y
L
A94130
→Fig. 7—System Wiring Diagram Using A Typical Indoor Heat Pump Thermostat, With Supplemental Heat Relay
MODEL HP
THERMOSTAT
INDOOR
CONTROL
BOARD
24 VAC HOT
R
24 VAC COMM
C
OUTDOOR
SPLICE
R
R
C
C
SINGLE-SPEED HEAT
PUMP DEFROST BOARD
SHR
COOL / HEAT
STAGE 1
Y/Y2
Y
FAN
G
G
RVS COOLING
O/W2
O
O
W2D
W2
HEAT STAGE 2
W/W1
W2T
CUT
JW1
SHR ODT
W3
Y0
Y
A97219
→Fig. 8—System Wiring Diagram Using A Corporate Model Heat Pump Indoor Thermostat, With Supplemental Heat Relay
—9—
BLK
GRN
WHT
110 VAC BRANCH CKT FOR EAC
24 VAC LOW VOLTAGE CKT FOR HUMIDIFIER
GND HOT NEUT
PCB
AUX+ AUX–
EAC PLUG
OR
HUMIDIFIER
24 VDC RELAY
A94131
Fig. 9—Wiring Layout of KFAIR0101ACR
UNIT RATING
LABEL ON DOOR
HEATER LABEL
FROM KIT
A90111
Fig. 10—Heater Rating Label Location on Fan Coil Rating Plate
Table 6—Electric Heater Stage Limiting
HEATER PART NO.
KFAEH2201H10
KFAEH2301H15
KFAEH2401H20
Heater Stage
10 kw Non-Fused
15 kw Fused
20 kw Fused
1
3
3
5
STAGES (KW OPERATING)
W2T Only (JW1 cut)
W2T and W3
2
3
4
6
9
9
8
11
15
10
15
20
—10—
Table 7—LED Flash Code
FLASH CONDITION
NO LIGHT/FLASH
STEADY LIGHT
STEADY FLASH
1 FLASH
2 FLASHES
3 FLASHES
4 FLASHES
5 FLASHES
6 FLASHES
7 FLASHES
INPUT SIGNAL
—
—
—
Y only
Y and/or W2T
Y and/or W2T
Y and/or W2T
Y, O
Y, W2D, and/or W2T
W2T
PROBLEM INDICATION
No Power or Board Failure
Board Failure
Stand By Condition or Fan Only
Heat Pump Only Operating
Heat Pump Plus 1 Sequencer
Heat Pump Plus 2 Sequencers
Heat Pump Plus 3 Sequencers
Cool Mode
Defrost Mode
Emergency Heat Mode
INTERNAL FUNCTION
24V
TRANS
208
230
DUMMY
TERMINALS
SEC2
3 2 1
6 5 4
9 8 7
CAP
SEC1
T1
T2
T3
9-PIN RECEPTACLE
TO HEATER
PACKAGE
PROCESSOR
F1
F2
K3
HI
LO
FAN
MOTOR
JW1
LOW
VOLTAGE
TERMINAL
BOARD
CLIP JUMPER FOR
HIGH SPEED
OPERATION ONLY
R
AUX–
AUX+
JW2
C
K1
Y
G
O
W2D
W2T
W3
Y0
K2
FUSE
LEGEND
INTERNAL CONDUCTORS
EXTERNAL WIRES
A94149
Fig. 11—PCB Schematic
—11—
CAUTION:
THIS COMPARTMENT MUST BE CLOSED EXCEPT FOR SERVICING
NOT SUITABLE FOR USE ON SYSTEMS EXCEEDING
150V TO GROUND
BLOWER MOTOR
ROTATION
ATTENTION:
NE CONVIENT PAS AUX INSTALLATIONS DE PLUS DE 150
V A LA TERRE
SCHEMATIC DIAGRAM
HTR3 BLK
4
HTR2
LS2
YEL
BLK
FU1
FU4
SEQ 1
3
4
BLK
HTR4
10
BLK
SEQ 2
8
7
SYSTEM TRANSFORMER: 40.0VA
FAN COIL/HEATER: 26.3VA
REMAINING VA AVAILABLE: 13.7VA
BLK
PCB
SEQ3
6
5
BLK
SEQ 2
HTR1 BLK
BLK
YEL
SEC 2
ORG
YEL
LED
SEQ2
VIO
3 2 1
6 5 4
9 8 7
9
8
7
T3
BRN
F
10
7
8
5
6
F2
LO
4
3
LVTB
RED-LOW
HPLV
LEADS
Y
GND
BRN
YEL-COM
NO LIGHT OR FLASH
STEADY LIGHT
STEADY FLASH
1 FLASH
DIAGNOSTIC LIGHT
LOW VOLT TERM BRD
SEQUENCER
2 FLASHES
3 FLASHES
TRANSFORMER
PCB TRAN TERMINALS
FIELD LOW VOLTAGE
HPLV LEADS
MARKED TERMINAL
322251-101
REV. B
CAP
LED FLASH CODES
R
YEL-COM
C
R C Y G O E W2
GRN/YEL-GND
NOTES:
INDOOR THERMOSTAT
1. USE COPPER WIRE (75°C MIN) ONLY BETWEEN
SEE NOTES #2, #7,AND #8
DISCONNECT SWITCH AND UNIT.
2. CONNECT LOW VOLTAGE WIRING AS SHOWN (24VAC).
LEGEND
3. CONNECT TRANSFORMER PRIMARY TO THE PROPER
VOLTAGE TERMINAL
CAPACITOR
CAP
LED
4. TO BE WIRED IN ACCORDANCE WITH NEC AND LOCAL CODES.
COMM COMMON
LVTB
5. IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE
LOW VOLT FUSE
F
REPLACED, USE THE SAME OR EQUIVALENT TYPE WIRE.
SEQ
FAN MOTOR
FW
6. REPLACE LOW VOLTAGE FUSE WITH NO GREATER THAN
TRAN
EQUIPMENT GROUND
GND
5 AMP FUSE.
HPLV HEAT PUMP LOW VOLT XFORM
7. REFER TO THERMOSTAT INSTRUCTIONS FOR "E" JUMPER
HEATER
HTR
INSTALLATION.
LIMIT SWITCH
LS
8. DO NOT CONNECT THERMOSTAT "E" TO PCB "W3".
BRN
FAN MOTOR THERMALLY PROTECTED
O
TRAN
SEE NOTE #3
BRN
FM
BLU-MED
BLK-HI
GRN/YEL-GND
W2
MINIMUM MOTOR LO SPEED TAP SELECTION
030 033 036 038 042 048 060 070
FAN COIL SIZE
MOTOR SPEED AT 20 KW MED MED LO LO LO LO LO LO
L1 FU1 60A
L3 FU3 60A
GND
Yo
W3
JW1
W2T
Y
G
C
R
SEC 2
YEL
HI
L4 FU4 60A
L2 FU2 60A
SEQ2
F1
SEQ1
RED
BLU-MED
BLK-HI
AUX +
T1
SEQ1
4
230V
208V
COM
RED-LO
CAP
BRN FM
BRN
5
RED
9
T2
240 VAC
T3
BLK
F2
YEL
LO
6
DUMMY
T2
O
HI
SEC 1
COMM
FAN
240
DUMMY VAC
1
2
W2D
F1
3
208 V
230 V
SEQ3
AUX -
PCB
BLK
XFORM
T1
COM
RED
24 V
BRN
R
C
Y
G
O
W2D
W2T
W3
Yo
SEC 1 F
LS1
HTR2
LS2
LS3/4
TRAN
LS3
SEQ 3
9
HTR3
LS1
JW1
2
HTR4 BLK
3
L2
JW2
YEL
LS4
1
L4
BLK
YEL
YEL
HTR1
SEE RATING PLATE
FOR VOLTS & HERTZ
SEE NOTE #1
L3
FU3
FU1
L1
COMPONENT ARRANGEMENT
DISCONNECT PER NEC
FIELD POWER WIRING
4 FLASHES
5 FLASHES
BOARD FAILURE
STAND BY CONDITION
OR FAN ONLY
HEAT PUMP HEAT
ONLY OPERATING
HEAT PUMP PLUS
1 SEQUENCER
HEAT PUMP PLUS
2 SEQUENCERS
HEAT PUMP PLUS
3 SEQUENCERS
COOL MODE
6 FLASHES
DEFROST MODE
7 FLASHES
EMERGENCY HEAT
MODE
PCB JUMPER (JW)
UNMARKED TERMINAL
NO POWER OR
BOARD FAILURE
A94132
Fig. 12—Typical Wiring Label
© 1997 CAC/BDP
P.O. Box 70, Indianapolis, IN 46206
agfaeh06
—12—
Book/Tab: 1/3c, 4/2c
Catalog No. 63FA-EH0
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