IM 991-2 • MAVERICK II ROOFTOP 40 www.DaikinApplied.com
Wiring Diagrams
Wiring Diagrams
Legend
ID
Description
Standard Location
ACT3, 4
Actuator motor, economizer
Economizer section
ACT10, 11
Actuator motor, exhaust
dampers
Return section
ACT12
Actuator motor, enthalpy wheel
bypass damper
Energy recovery section
AFD10
Adjustable frequency drive,
supply fan
AFD/supply fan section
AFD20
Adjustable frequency drive,
return/exhaust fan
AFD/ret. ex. fan section
AS
Airflow switch, burner blower
Gas heat box
BM
Burner blower motor
Heat section, gas
CB10
Circuit breaker, supply fan
Main control box
CB20
Circuit breaker, return/exhaust
fan
Main control box
CCB1, 2
Compressor control boards,
refrig. circuits
Main control box
CPC
Circuit board, main, micro
controller
Main control box
CPR
Circuit board, expansion, micro
controller
Main control box
CS1, 2
Control switches, refrig. circuits
Main/cond. control box
DAT
Discharge air temperature
sensor
Discharge section
DHL
Duct hi-limit
Main control box
DS1
Disconnect, total unit or cond/
heat
Main control box
EFT
Entering fan air temperature
sensor
Supply fan section
EHB1
Staged electric heat board
Main control box
F1A, B
Fuse, control circuit transformer
(T1), primary
Main control box
F1C
Fuse, control circuit transformer
(T1), secondary
Main control box
F2
Fuse, control circuit transformer
(T2), primary
Main control box
F3
Fuse, burner blower motor
Main control box
FB31–40
Fuseblock, electric heat (top
bank)
Electric heat box
FB41–50
Fuseblock, electric heat (bot.
bank)
Electric heat box
FD
Flame detector
Heat section, gas
FLC
Fan limit control
Heat section, gas
FSG
Flame safeguard
Gas heat box
GCB1
Generic condenser board,
refrig. circ.
Main control box
GRD
Ground
All control boxes
GV1
Gas valve, pilot
Heat section, gas
GV2
Gas valve, main/safety
Heat section, gas
GV3
Gas valve, redundant/safety
Heat section, gas
HL1–10
Hi-limits, pwr, elec heaters (top
bank)
Heat section, electric
HL11–20
Hi-limits, pwr, elec heaters (bot.
bank)
Heat section, electric
HL22
Hi-limits, gas heat (pre-filters)
Supply fansection
HL23
Hi-limits, gas heat (final filters)
Final filter section
HL31–40
Hi-limits, ctl. elec heaters (top
bank)
Heat section, electric
HL41–50
Hi-limits, ctl. elec heaters (bot.
bank)
Heat section, electric
HP1–4
Hi-pressure controls, refrig
On compressors
HP5
Hi-pressure controls, gas
Heat section, gas
HS1
Heat switch, electric heat
shutdown
Main control box
HS3
Heat switch, electric heat
deadfront interlock
Electric heat box
ID
Description
Standard Location
HTR1–6
Crankcase heaters
On compressors
IT
Ignition transformer
Gas heat box
LAT
Leaving air temperature sensor
Energy recovery section
LP1, 2
Low-pressure controls,
refrigeration
On compressors
LP5
Low-pressure control, gas
Heat section, gas
LS1, 2
Limit switch, low fire, high fire
Gas heat box
M1–8
Contactor, compressor
Main/cond. control box
M10
Contactor, supply fan
Main control box
M11–18
Contactor, condenser fans,
circuit #1
Main/cond. control box
M21–28
Contactor, condenser fans,
circuit #2
Main/cond. control box
M29
Contactor, burner motor
Gas heat box
M31–39
Contactor, electric heat (top
bank)
Electric heat box
M41–50
Contactor, electric heat (bot.
bank)
Electric heat box
MCB
Microprocessor circuit board
Main control box
MJ
Mechanical Jumper
All control boxes
MMP1–8
Manual motor protector,
compressors
Main/cond. control box
MMP10
Manual motor protector, supply
fan
Main control box
MMP11–18
Manual motor protector, cond.
fans, ckt#1
Main/cond. control box
MMP21–28
Manual motor protector, cond.
fans, ckt#2
Main/cond. control box
MMP51, 52, 53
Manual motor protector,
exhaust fan(s)
Prop exhaust box
MP1–6
Motor protector, compr. #1–6
On compressors
OAE
Outside air enthalpy sensor
Economizer section
OAT
Outside air temperature sensor Economizer section
PB1, 2
Power block, power distribution
Main control box
PB11, 12
Power block, power distribution
Main control box
PB19, 20
Power block, exhaust fan
Junction box, split unit
PC5
Pressure control, clogged filter
Pre-filter section
PC7
Pressure control, proof airflow
Supply fan section
PC8
Pressure control, minimum
airflow
Coil section, cool
PC12, 22
Pressure control, Fantrol
Condenser section
PM1
Phone modem
Main control box
PS1, 2
Pumpdown switches, refrig
circuits
Main/cond. control box
R1, 2
Relay, hi pressure reset
Main/cond. control box
R3, 4
Relay, hi pressure delay
Main/cond. control box
R5–8
Relay, safety, cool fail
Main/cond. control box
R9, 10
Relay, compressor lockout
Main/cond. control box
R20
Relay, heat, gas/ steam/
hotwater
Gas heat/main cont. box
R23
Relay, heat, gas & electric
Gas/electric heat box
R24
Relay, heat alarm, gas
Main control box
R25
Relay, heat, gas, start supply
fan inverter
Main control box
R26
Relay, isol/exh. dampers, open/
close
Main control box
R28
Relay, isolation damper, safety
Main control box
R29
Relay, remote fire alarm
Main control box
R66
Relay, smoke detector, return
air
Main control box
R67
Relay, supply fan, enable
Main control box
R69
Relay, Inv. bypass VAV box
interlock
Main control box
