Hi-Velocity Systems HE-Z PSB Circuit Board · Hi-Velocity Systems HE-Z PSB Circuit Board ... JUMPER...
10
www.hi-velocity.com © 1995-2013 Energy Saving Products Ltd. The Hi-Velocity HE-Z Series Fan Coil utilizes a dual function Circuit Board. This circuit board makes zoning simple and easy, eliminating the need for by-pass dampers and dump zones. It also makes adjustment to airflow quick with the use of trim pots for direct control. Hi-Velocity Systems HE-Z PSB Circuit Board Module WIR Hi-Velocity Wiring & Settings (1/10) Features: • Wiring the circuit board is a quick and simple task. • Clearly labeled connections. • No additional relays typically required. • When the PSB is set to “Auto”, it allows for automatic airflow adjustments, according to the static pressure of the supply air, making zoning a breeze. • “Manual” mode allows for direct speed control of the fan anywhere from 0-100% capability. • Fan speeds in both functions are individually set for cooling, heating and constant fan using the three trim pots located on the PSB. • Circuit board is capable of controlling boilers, dual purpose hot water heaters, heat pumps, and geothermal systems, as well as our manufactured slide-in electric strip heaters (ESH). • The circuit board is also designed to send control signals to cooling sources such as condensing units, chillers, heat pumps and geothermal systems. • Circuit board features an auxiliary relay with dry contacts connections, so that any applications requiring 24v, 120v, 230v or dry contacts (boilers, hot water heaters, heat pumps & humidifiers) can be automatically started when there’s a call for heat. • Circulator timer chip is provided to prevent water stagnation in potable water systems and to provide pump rotor protection for water source heating and cooling. Auxiliary Relay Terminals (Heating) VDC Control Method Switch Pressure Sensor Indicator Light Fan Adjustment Trimpots Operation Mode Indicator 0 - 10v DC Output Fan Delay On/Off Switch T’Stat Connections 24v Auto-Reset Fuse Condenser/Zone Valve Connections Pump Timer on/off Switch Emergency Disconnect Module WIR Hi-Velocity Wiring and Settings (1/10) • If you wish to have the timer cycle operate at a specific time of day, simple turn off power to the fan coil unit for ten seconds at that time and then turn the power back on. • If you do not need to use the timer, move the jumper header from the On pins to the Off pins and it will be disabled. • Circuit board is equipped with an emergency disconnect feature. If there’s an emergency this feature will de-energizing all fan speeds and connected equipment. • For this emergency disconnect feature to be active a jumper header must be remove from the pins located close to the emergency disconnect terminal strip. • A fan delay is programmed into the circuit board. This delay will prevent the fan from starting for 20 seconds on cooling, 30 seconds on heating, and purge for 30 seconds on shut-down. This delay is beneficial in certain applications to give the heating or cooling equipment a “head start” before the fan turns on. Function: • Manages input power and through the use of a transformer it supply 24vac to additional equipment. • Organizes all thermostat inputs and prioritizes them accordingly. • Sends a 0-10vdc output to the VFD, dependent on how fast it wants the fan to run.
Transcript of Hi-Velocity Systems HE-Z PSB Circuit Board · Hi-Velocity Systems HE-Z PSB Circuit Board ... JUMPER...
www.hi-velocity.com
© 1995-2013 Energy Saving Products Ltd.
The Hi-Velocity HE-Z Series Fan Coil utilizes a dual function Circuit Board. This circuit board makes zoning simple and easy, eliminating the need for by-pass dampers and dump zones. It also makes adjustment to airflow quick with the use of trim pots for direct control.
Hi-Velocity Systems HE-Z PSB Circuit Board
Module WIRHi-Velocity Wiring & Settings (1/10)
Features:• Wiring the circuit board is a quick and simple task.
• Clearly labeled connections.
• No additional relays typically required.
• When the PSB is set to “Auto”, it allows for automatic airflowadjustments, according to the static pressure of the supply air, making zoning a breeze.
• “Manual” mode allows for direct speed control of the fan anywherefrom 0-100% capability.
• Fan speeds in both functions are individually set for cooling, heatingand constant fan using the three trim pots located on the PSB.
• Circuit board is capable of controlling boilers, dual purpose hotwater heaters, heat pumps, and geothermal systems, as well as our manufactured slide-in electric strip heaters (ESH).
• The circuit board is also designed to send control signals to coolingsources such as condensing units, chillers, heat pumps and geothermal systems.
• Circuit board features an auxiliary relay with dry contactsconnections, so that any applications requiring 24v, 120v, 230v or dry contacts (boilers, hot water heaters, heat pumps & humidifiers) can be automatically started when there’s a call for heat.
• Circulator timer chip is provided to prevent water stagnation inpotable water systems and to provide pump rotor protection for water source heating and cooling.
Auxiliary Relay Terminals (Heating)
VDC Control Method Switch
Pressure Sensor Indicator Light
Fan Adjustment Trimpots
Operation Mode Indicator
0 - 10v DC Output
Fan Delay On/Off Switch
T’Stat Connections
24v Auto-Reset
Fuse
Condenser/Zone Valve Connections
Pump Timer on/off Switch
Emergency Disconnect
Module WIR Hi-Velocity Wiring and Settings (1/10)
• If you wish to have the timer cycle operate at a specific time ofday, simple turn off power to the fan coil unit for ten seconds at that time and then turn the power back on.
• If you do not need to use the timer, move the jumper header fromthe On pins to the Off pins and it will be disabled.
• Circuit board is equipped with an emergency disconnect feature.If there’s an emergency this feature will de-energizing all fan speeds and connected equipment.
• For this emergency disconnect feature to be active a jumperheader must be remove from the pins located close to the emergency disconnect terminal strip.
• A fan delay is programmed into the circuit board. This delay willprevent the fan from starting for 20 seconds on cooling, 30 seconds on heating, and purge for 30 seconds on shut-down. This delay is beneficial in certain applications to give the heating or cooling equipment a “head start” before the fan turns on.
Function:• Manages input power and through the use of a transformer itsupply 24vac to additional equipment.
• Organizes all thermostat inputs and prioritizes them accordingly.
• Sends a 0-10vdc output to the VFD, dependent on how fast itwants the fan to run.
www.hi-velocity.com
© 1995-2013 Energy Saving Products Ltd.
Display DescriptionE00 Output Overcurrent/Short-Circuit
E01 DC Link Overvoltage
E02 DC Link Undervoltage
E04 Inverter Overtemperature
E05 Output Overload (I x t function)
E06 External Fault
E08 CPU Error (watchdog)
E09 Program Memory Error (checksum)
E24 Programming Error
E31 Keypad (HMI) Communication Fault 97
E41 Self-Diagnosis Error 97
Display Descriptionrdy Inverter is ready to be enabled
Sub Power supply voltage is too low for the inverter operation (undervoltage)
dcb Inverter in DC braking mode
EPP Inverter is loading factory setting
Fault Messages
Other Messages
WEG Variable Frequency Drive
Module WIR Hi-Velocity Wiring and Settings (2/10)
Read-Only ParametersParameter Function Range Unit Description
P002 Motor Frequency Output 0 to 66 Hz Indicates the VFD Output Frequency in Hertz
P003 Motor Current Output 0 to 1.5 x Inom A Indicates the VFD Output Current in Amperes
P004 DC Link Voltage 0 to 524 V Indicates the VFD DC Link Voltage in Volts
P007 Motor Voltage Output 0 to 240 V Indicates the VFD Output Voltage in Volts
P008 Heatsink Temperature 25 to 110 ºC Indicates the Heat Sink Temp in Celsius. The VFD Overtemp Protection (E04) acts when Heatsink Temperature reaches 103 ºC
P014 Last Fault 00 to 41 EXX Indicates the Code of the last occurred Fault
P015 Second Fault Occurred 00 to 41 EXX Indicates the Code of the 2nd last occurred Fault
P016 Third Fault Occurred 00 to 41 EXX Indicates the Code of the 3rd last occurred Fault
Features:• Purposely oversized to ensure increased reliability and higher efficiencies at peak load• Features inherent with VFD allows for minimum power consumption at reduced loads (<100w average for constant fan speed)• Error code read out allows for easy drive analysis in the event of a VFD fault• Programmable drive parameters allow for acceleration and deceleration speed to be adjusted if necessary• Digital display makes motor speed references simple• Large heat sink allows for excellent heat dissipation in high ambient environments
Function:• Takes single phase input (110v or 200-240v) and converts it to 3 phase output for the fan motor• Fan speed is determined by the PSB circuit board which provides a 0-10vdc output to control the VFD
The Hi-Velocity HE-Z Series Fan Coil utilizes a WEG Variable Frequency Drive to run its 3-phase motor. The WEG VFD is a reliable and robust motor control that will provide many years of issue free operation.
Module WIRHi-Velocity Wiring & Settings (2/10)
www.hi-velocity.com T
HE
RM
OS
TA
T C
ON
NE
CT
ION
S R
-
EM
ER
GE
NC
Y D
ISC
ON
NE
CT
C
- 24
VA
C C
OM
MO
N R
o - 2
4 V
AC
INP
UT
Ri - 2
4 V
AC
OU
TP
UT
24
VA
C O
UT
PU
TW
1 - F
IRS
T S
TA
GE
HE
AT
W2
- SE
CO
ND
STA
GE
HE
AT
(O
R S
ING
LE
STA
GE
) Y
1 - F
IRS
T S
TA
GE
CO
OL
ING
Y2
- SE
CO
ND
STA
GE
CO
OL
ING
(OR
SIN
GL
E S
TA
GE
) C
- 24
VA
C C
OM
MO
N G
- TH
ER
MO
STA
T F
AN
SW
ITC
H D
- Y S
PE
ED
OV
ER
RID
E (7
0%
OF
Y)
O/B
- HE
AT
PU
MP
RE
VE
RS
ING
AU
XIL
IAR
Y H
EA
TIN
G R
EL
AY
24 V
AC
OU
TP
UT
CO
NN
EC
TIO
NS
X1
- FR
EE
ZE
STA
T X
2 - F
RE
EZ
E S
TA
T W
1 - H
EA
TIN
G (W
1) 2
4 V
AC
OU
TP
UT
W2
- HE
AT
ING
(W2
) 24
VA
C O
UT
PU
T Y
2 - C
ON
DE
NS
ING
UN
IT 2
4 V
AC
OU
TP
UT
Y1
- CO
ND
EN
SIN
G U
NIT
24
VA
C O
UT
PU
T C
- 24
VA
C C
OM
MO
N R
- 24
VA
C O
UT
PU
T
LE
D L
IGH
T IN
DIC
AT
OR
SL
ED
1 - G
RE
EN
LIG
HT, P
UM
P T
IME
RS
/ O
PE
RA
TIO
N M
OD
E IN
DIC
AT
OR
L
ED
2 - B
LU
E L
IGH
T, PR
ES
SU
RE
SE
NS
OR
N - N
EU
TR
AL
L - L
INE
VO
LTA
GE
A1
- AU
XIL
IAR
Y N
OR
MA
LLY
OP
EN
A2
- AU
XIL
IAR
Y N
OR
MA
LLY
CL
OS
ED
A3
- AU
XIL
IAR
Y C
OM
MO
N
JU
MP
ER
PIN
SE
TT
ING
S
AU
XIL
IAR
Y R
EL
AY
TIM
ER
(SE
E N
OT
ES
)H
3
NO
TE
S:
1) U
SE
TH
ER
MO
STA
T F
AN
SW
ITC
H T
O D
ISA
BL
E/E
NA
BL
E C
ON
TIN
UO
US
FA
N.
2) ‘C
’ TE
RM
INA
L O
N T
HE
RM
OS
TA
T (C
OM
MO
N) IS
NO
T N
EE
DE
D F
OR
SO
ME
TH
ER
MO
STA
TS
C
ON
SU
LT T
HE
RM
OS
TA
T IN
ST
RU
CT
ION
S F
OR
DE
TA
ILS
.3
) W1
AN
D W
2 A
CT
IVA
TE
S A
UX
ILIA
RY
RE
LA
Y (A
3) O
N C
AL
L A
ND
CA
N B
E U
SE
D W
ITH
A1
A
ND
/OR
A2
AS
DR
Y C
ON
TA
CT
S, A
RM
ED
24
VA
C F
RO
M T
HE
‘R’ T
ER
MIN
AL
, OR
AR
ME
D
110
v FR
OM
TH
E ‘L
’ TE
RM
INA
L.
4) A
UX
ILIA
RY
HE
AT
ING
RE
LA
Y T
IME
R A
CT
IVA
TE
S C
IRC
UIT
FO
R 5
MIN
UT
ES
EV
ER
Y 2
4
HO
UR
S S
TA
RT
ING
WH
EN
PO
WE
R IS
AP
PL
IED
TO
TH
E U
NIT.
5) L
ED
1: IN
DIC
AT
OR
LIG
HT
FO
R F
AN
SP
EE
D O
PE
RA
TIO
N A
ND
AU
XIL
IAR
Y R
EL
AY
O
PE
RA
TIO
N. S
EE
MA
NU
AL F
OR
LIG
HT
OP
ER
AT
ION
SE
QU
EN
CE
.
H1
EM
ER
GE
NC
Y D
ISC
ON
NE
CT: R
EM
OV
E P
IN IF
WIR
ED
TO
EM
ER
GE
NC
Y D
ISC
ON
NE
CT
H2
TIM
ER
: M
OD
E:
AU
TO
- FA
N S
PE
ED
MO
DU
LA
TE
S D
EP
EN
DIN
G U
PO
N S
TA
TIC
PR
ES
SU
RE
MA
NU
AL
- FA
N S
PE
ED
OP
ER
AT
ES
AT
TR
IM P
OT
S S
ET
AIR
FLO
W
H4
DE
LA
Y: Y
/20
SE
CO
ND
, W/3
0 S
EC
ON
D F
AN
DE
LA
Y.
Y A
ND
W 3
0 S
EC
ON
D P
OS
T P
UR
GE
.
WH
EN
AD
JU
ST
TR
IM P
OT
S: O
N P
OW
ER
STA
RT
UP, A
LL
OW
30
SE
CO
ND
S
FO
R S
YS
TE
M T
O P
RE
SS
UR
IZE
BE
FO
RE
MA
KIN
G A
NY
CH
AN
GE
S.
DO
NO
T A
DJU
ST
MO
RE
TH
AN
A ½
TU
RN
AT
A T
IME
, AL
LO
W 4
5 S
EC
ON
DS
B
ET
WE
EN
AD
JUS
TM
EN
TS
FO
R T
HE
PS
B T
O R
EA
CH
SE
T P
OIN
T.
AU
TO
MO
DE
: LE
D 2
WIL
L S
PO
RA
DIC
AL
LY
FL
ICK
ER
BL
UE
(ON
/OF
F) T
O
SH
OW
TH
AT
IT IS
PR
OP
ER
LY S
EN
SIN
G P
RE
SS
UR
E IN
TH
E S
YS
TE
M.
* NO
LIG
HT
IND
ICA
TE
S T
RIM
PO
T IS
AB
OV
E N
OR
MA
L O
PE
RA
TIN
G
RA
NG
E (C
OU
NT
ER
CL
OC
KW
ISE
DE
CR
EA
SE
).* S
OL
ID L
IGH
T IN
DIC
AT
ES
TR
IM P
OT
IS B
EL
OW
NO
RM
AL O
PE
RA
TIN
G
RA
NG
E (C
LO
CK
WIS
E, IN
CR
EA
SE
).
MA
NU
AL
MO
DE
: LE
D 2
WIL
L B
E O
FF
, AD
JUS
T A
IR E
AC
H O
F T
HE
FL
OW
S T
O
DE
SIR
ED
CF
M/L
PS
OU
TP
UT.
* DE
CR
EA
SE
AIR
FL
OW
AD
JUS
T T
RIM
PO
T C
OU
NT
ER
CLO
CK
WIS
E* IN
CR
EA
SE
AIR
FL
OW
AD
JUS
T T
RIM
PO
T C
LO
CK
WIS
E
RE
FE
R A
ND
CO
MP
LE
TE
CO
MM
ISS
ION
ING
RE
PO
RT
PR
IOR
TO
NO
RM
AL
OP
ER
AT
ION
. FO
R F
ULL D
ETA
ILS
, RE
PO
RT
IS A
VA
ILA
BL
E IN
TH
E
INS
TA
LL
AT
ION
MA
NU
AL O
R O
NLIN
E A
T W
WW
.HI-V
EL
OC
ITY
.CO
M
DE
CR
EA
SE
AIR
FL
OW
(CO
UN
TE
R C
LO
CK
WIS
E)
FA
N A
DJ
US
TM
EN
T T
RIM
PO
TS
INC
RE
AS
E A
IR F
LO
W(C
LO
CK
WIS
E)
PO
WE
R IN
PU
T: 20
8-2
40
/1/6
0
PO
WE
R IN
PU
T: 11
0-1
20
/1/6
0
1
2
3
4
5
6
7
8
9
10
1
1
12
L/L
1N
/L2
UV
WP
E
P 0I
Pa
ram
ete
r
Va
lue
WEG CONTROLLER
W1
W2
CR
Y2
Y1
DO
/BG
RY1W2W1X1X2 Y2 CF1
AUXILIARY RELAY(HEATING)
LL
L2
L2
NL
1L
1 A3A2A1 LN
COOLHEATFANLED
L1 J8
ON
OF
F
H2
TIM
ER
AU
TO
MA
N
H3
MO
DE
ON
OF
F
H4
DE
LA
Y
J5 J7
J4
U2
J3
R8
R7
R6 GCHF
318.2
3 P
cb
w-0
01sep
-039
-
+
J2
N CRi Ro
H1J9
J1
LED
L2
Wh
ite
Ora
ng
e
Bla
ck
Re
dB
lac
k
Eq
uip
me
nt
Gro
un
d
L1
N
Ground
WH
BK
GLIN
E IN
24v / 2
0va
TR
AN
SF
OR
ME
R
TH
ER
MO
STA
T
24v OUTPUT
PS
B C
IRC
UIT
BO
AR
D
L2
REMERGENCY DISCONNECT
208-2
40v P
OW
ER
CA
BL
E
110/1
20 V
AC
20
8-2
40
/1/6
0
VF
D
208-2
40 V
AC
BK
WH
GR
MO
TO
R L
EA
DS
PL
UG
(3 P
HA
SE
)
TR
IM P
OT
S (C
OO
LIN
G, H
EA
TIN
G, C
ON
STA
NT
FA
N)
- AT
MO
SP
HE
RIC
PR
ES
SU
RE
+ D
UC
T P
RE
SS
UR
E
0-1
0 V
DC
Bla
ck
Wire
(-)
+ -
Re
d W
ire (+
)
W1
W2
CR
Y2
Y1
DO
/BG
RY1W2W1X1X2 Y2 CF1
AUXILIARY RELAY(HEATING)
LL
L2
L2
NL
1L
1 A3A2A1 LN
COOLHEATFANLED
L1 J8
ON
OF
F
H2
TIM
ER
AU
TO
MA
N
H3
MO
DE
ON
OF
F
H4
DE
LA
Y
J5 J7
J4
U2
J3
R8
R7
R6 GCHF
31
8.2
3 P
cb
w-0
01
se
p-0
39
-
+
J2
N CRi Ro
H1J9
J1
LED
L2
PS
B C
IRC
UIT
BO
AR
D
TH
ER
MO
STA
T
24v OUTPUT EMERGENCY DISCONNECT
1
2
3
4
5
6
7
8
9
10
1
1
12
L/L
1N
/L2
UV
WP
E
P 0I
Pa
ram
ete
r
Va
lue
WEG CONTROLLER
Wh
ite
Bla
ck
Ora
ng
e
Re
dB
lac
k
Eq
uip
me
nt
Gro
un
d
L
N
Ground
WH
BK
GLIN
E IN
24v / 2
0va
TR
AN
SF
OR
ME
R
VF
D
110-1
20 V
AC
MO
TO
R L
EA
DS
PL
UG
(3 P
HA
SE
)
11
0-1
20
v P
OW
ER
CA
BL
E
110/1
20 V
AC
11
0-1
20
/1/6
0
BK
WH
GR
TR
IM P
OT
S (C
OO
LIN
G, H
EA
TIN
G, C
ON
STA
NT
FA
N)
- A
TM
OS
PH
ER
IC P
RE
SS
UR
E
+ D
UC
T P
RE
SS
UR
E
0-1
0 V
DC
Bla
ck
Wire
(-)
+ -
Re
d W
ire (+
)
ES
P 3
18
.23
MA
Y.9
© 1995-2013 Energy Saving Products Ltd.
HE-Z Fan Coil - PSB Wiring Diagram
Module WIR Hi-Velocity Wiring and Settings (3/10)
Module WIRHi-Velocity Wiring & Settings 3/10)
www.hi-velocity.com
© 1995-2013 Energy Saving Products Ltd.
*Note: X1 to X2 recommended to be wired to Freeze Stat (Anti-Ice Control). For chilled water applications, a jumper between X1 to X2 must beinstalled to complete the Y2 - 24V Signal to Y on Condenser.
HE-Z Fan Coil - PSB Circuit Board Wiring
24 VAC Input terminals (t-stat connections):
W1: 1st stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot.
W2:
2nd stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot. The difference between a W1 call and a W2 call is the output terminal that will be energized with 24v. (W1 energized on t-stat terminal strip will provide 24v to W1 on output terminal strip, W2 energized on t-stat terminal strip will provide 24v to W2 on output terminal strip,)
C: Common
G: Constant Fan, Runs at the Constant Fan speed when 24v (R) is supplied, set by the Fan trim pot.
R: 24 volt supply (Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)
Y2: 2nd stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot.
Y1:
1st stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot. The difference between a Y1 call and a Y2 call is the output terminal that will be energized with 24v. (Y1 energized on t-stat terminal strip will provide 24v to Y1 on output terminal strip, Y2 energized on t-stat terminal strip will provide 24v to Y2 on output terminal strip,)
D: Runs at 70% Cooling speed when 24v (R) is supplied, set by the Cool trim pot.
O/B: Dead Terminal
Fan Speed Priority Sequence (from highest to lowest): D = 1st Y = 2nd W = 3rd G=4th
24 VAC Output terminals (24v output connections):
R: 24 volt Supply (Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)
C: Common
Y1: 1st Stage Cooling Equipment
Y2: 2nd Stage Cooling Equipment*
w2: 24v Output to 2nd Stage Heating Equipment.
w1: 24v Output to 1st Stage Heating Equipment.
X1: Freeze Stat Connection*
X2: Freeze Stat Connection*
Module WIR Hi-Velocity Wiring and Settings (4/10)
Module WIRHi-Velocity Wiring & Settings (4/10)
www.hi-velocity.com
© 1995-2013 Energy Saving Products Ltd.
Emergency Disconnect:
C: Common
C: Common
Ro:
Provides 24VAC to the entire PSB board. In order for “Ro” to receive power it must be connected to terminal “Ri”. This can be done via the three pin jumper header (H1) located above the terminal strip, a wire jumper or normally closed safety device installed between “Ro” and “Ri”. The jumper pin header (H1) will need to be removed to activate the emergency disconnect option.
Ri: Receives 24VAC direct from the transformer. Power must then be sent to the “Ro” terminal to be distributed throughout the rest of the PSB board.
3 Pin Jumper Terminals:
H1: Emergency Disconnect
H2 Timer: Pump timer cycles the pump on for 5 minutes every 24 hours to prevent stagnant water. (on/off) The jumper pin header (H2) will need to be in the ON position for the timer to be active.
H3 Mode:
Switches the control method used by the PSB to control motor speed. “Auto” uses the pressure transducer in order to modulate fan speed to maintain a constant supply pressure.“Man” allows for direct speed control of the motor by-passing the pressure transducer. The jumper pin header (H3) determines the control method.
H4 Delay: Cooling/20 second, Heating/30 second fan delay, and 30 second post purge. The jumper pin header (H4) will need to be in the ON position for the delay to be active.
Auxiliary Heating Relay:
N: Neutral
L: Line Voltage
A1: Auxiliary Relay Normally Open
a2: Auxiliary Relay Normally Closed
a3: Auxiliary Relay Common
HE-Z Fan Coil - PSB Circuit Board Wiring Cont’d
Module WIR Hi-Velocity Wiring and Settings (5/10)
Control Signal:
J8: 0-10 Volt DC Output to VFD
Module WIRHi-Velocity Wiring & Settings (5/10)
www.hi-velocity.com
115
VAC
RELA
YW
IRIN
G
A3
A2 A1L N
24VA
CRE
LAY
WIR
ING
A3
A2 A1L N
R
DRY
CONT
ACTS
RELA
YW
IRIN
G
A3
A2 A1L N
SAM
PLE
AU
XILI
ARY
REL
AYW
IRIN
GO
PTIO
NS
FOR
HEA
TIN
G(W
1O
RW
2)
C
SAM
PLE
AU
XILI
ARY
REL
AYW
IRIN
GO
PTIO
NS
FOR
HEA
TIN
G(1
STA
GE
-W2
ON
LY)
A3
A2 A1L N
115v
CIRC
ULAT
OR
DRY
CONT
ACTS
AND
115
VAC
RELA
YW
IRIN
G
DRY
CONT
ACT
TOBO
ILER
EXTE
RNAL
SPDT
RELA
Y24
VAC
COIL
X1W1
Y2Y1 X2W2
TTCR
R W1
W2 Y1 Y2 C G D
O/B
-24
VAC
OU
TPU
T-F
IRST
STAG
EH
EAT
-SE
CO
ND
STA
GE
HEA
T(O
RS
ING
LEST
AGE)
-FIR
STS
TAG
EC
OO
LIN
G-S
ECO
ND
STA
GE
CO
OLI
NG
(OR
SIN
GLE
STAG
E)-2
4VA
CC
OM
MO
N-T
HER
MO
STA
TFA
NS
WIT
CH
-YS
PEED
OVE
RR
IDE
(70%
OF
Y)-H
EATP
UM
PR
EVER
SIN
GVA
LVE
-NEU
TRAL
-LIN
EV
OLT
AGE
-AU
XILI
AR
YN
OR
MAL
LYO
PEN
-AU
XILI
AR
YN
OR
MAL
LYC
LOS
ED-A
UXI
LIA
RY
CO
MM
ON
-FR
EEZE
STA
T-F
REE
ZES
TAT
- - -24
VAC
N L A1
A2
A3 X1 X2 W1
W2 C R
CO
ND
EN
SIN
GU
NIT
(Y2)
24V
OU
TPU
TY2 Y1
-HEA
TIN
G(W
1)24
VO
UTP
UT
-HEA
TIN
G(W
2)24
VO
UTP
UT
- 24VA
CC
OM
MO
NO
UTP
UT
CO
ND
ENS
ING
UN
IT24
VO
UTP
UT
(Y1)
FOR
SIN
GLE
STA
GE
OPE
RAT
ION
USE
W2
&Y2
TER
MIN
ALS
Ener
gySa
ving
Prod
ucts
ESP3
15.0
812
615-
124
Stre
et,E
dmon
ton,
AB
T5L-
0N8
YC
COND
ENSE
R
THER
MOST
AT
WC
RY
G
AN
TI-IC
EC
ON
TRO
L
WC
GR
Y
W1W
2C
RY2
Y1D
O/B
G
1St
age
Coo
ling
1St
age
Hea
ting
W1W
2C
RY2
Y1D
O/B
G
O/B
Y2Y1
RC
W1
COND
ENSE
R
THER
MOST
AT
ANT
I-IC
ECO
NTR
OL
EW
2C
RY2
GY1
2St
age
Coo
ling
1St
age
Hea
ting
W1W2
CR
Y2Y1
DO/
BG
O/B
Y2Y1
RC
W1
COND
ENSE
R
EW2
CR
Y2G
O/B
THER
MOST
AT
Y1
AN
TI-IC
EC
ON
TRO
L
2St
age
Coo
ling
3St
age
Hea
ting
Hea
tpum
p
EW2
CR
Y2G
O/B
Y1
AN
TI-IC
EC
ON
TRO
L
O/B
YY
RC
W1
COND
ENSE
R
EW2
CR
YG
O/B
THER
MOST
AT
W1W
2C
RY2
Y1D
O/B
G
1St
age
Coo
ling
2St
age
Hea
ting
Hea
tpum
p
YR
GC
W2E
O/B
HE
ATIN
GM
OD
E:R
EFE
RTO
AU
XILI
AR
YC
ON
TAC
TIN
FOR
MAT
ION
FOR
W1
AND
W2
HE
ATIN
GM
OD
E:R
EFE
RTO
AU
XIL
IAR
YC
ON
TAC
TIN
FOR
MAT
ION
FOR
W1
AND
W2
SAM
PLE
AU
XILI
ARY
REL
AYW
IRIN
GO
PTIO
NS
FOR
HEA
TIN
G(W
1O
RW
2)
24v,
DRY
CONT
ACTS
AND
115
VAC
RELA
YW
IRIN
G
W1W2
CR
Y2Y1
DO/
BG
A3
A2 A1L N
TT
DRY
CONT
ACT
TOBO
ILER
EXTE
RNAL
SPDT
RELA
Y24
VAC
COIL
115
VTO
CIR
CU
LATO
R
X1W1
Y2Y1 X2W2
CR
(W2)
24v
OUTP
UT(W
1)24
vOU
TPUT
W1
-FIR
STST
AGE
HEAT
W2
-SIN
GLE
STAG
EOR
2ND
STAG
EHE
AT
© 1995-2013 Energy Saving Products Ltd.
Extended wiring diagrams for the various applications the Hi-Velocity HE-Z model can be used for. If you do not find the wiring configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.
HE-Z Fan Coil - Extended Wiring Diagrams
Module WIR Hi-Velocity Wiring and Settings (6/10)
Module WIRHi-Velocity Wiring & Settings (6/10)
www.hi-velocity.com
EnergySaving
Products12615-124
Street,Edmonton,A
BT5L-0N
8ESP315.08
HEAT
PUM
PC
/WC
ON
DEN
SERD
EFRO
STC
YCLE
BO
ILERB
AC
K-U
P
W1W
2C
RY2
Y1D
O/BG
1Stage
Cooling
2Stage
Heating
Heatpum
pc/w
condenserdefrostcycle
AN
TI-ICE
CO
NTR
OL
O/BY
RC
W1
CONDENSER
TT
DRYCONTACT
TOBOILER
EXTERNALSPDT
RELAY24
VACCOIL
EW2
CR
YG
EW
2C
RY
GO/B
THERMOSTATO/B
W1W
2C
RY2
Y1D
O/BG
O/BY2
Y1R
CW
1
CONDENSER
EW
2C
RY2
GO/B
THERMOSTAT
Y1
AN
TI-ICE
CO
NTR
OL
EW
2C
RY2
GO/B
Y1
EXTERNALSPDT
RELAY24
VACCOIL
TT
DRYCONTACT
TOBOILER
2Stage
Cooling
3Stage
Heating
Heatpum
pc/w
condenserdefrostcycle
HE
ATING
MO
DE
:RE
FER
TOA
UX
ILIAR
YC
ON
TACT
INFO
RM
ATION
FOR
W1
AND
W2
HE
ATING
MO
DE:R
EFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
EnergySaving
Products12615-124
Street,Edmonton,A
BT5L-0N
8ESP315.08
CH
ILLEDW
ATERW
IRIN
G
1Stage
Cooling
(Only)
c/wchilled
watercirculator
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
Chilled
water
Circulator
CR
YG
THERMOSTATG
CR
Y
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
1Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y
CO
OLIN
GC
IRC
ULATO
R
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
2Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y2
CO
OLIN
GC
IRC
ULATO
R
Y1
HE
ATING
MO
DE
OP
TION
S:R
EFER
TOA
UX
ILIAR
YC
ON
TACT
INFO
RM
ATION
FOR
W1
AND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
EnergySaving
Products12615-124
Street,Edmonton,A
BT5L-0N
8ESP315.08
CH
ILLEDW
ATERW
IRIN
G
1Stage
Cooling
(Only)
c/wchilled
watercirculator
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
Chilled
water
Circulator
CR
YG
THERMOSTATG
CR
Y
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
1Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y
CO
OLIN
GC
IRC
ULATO
R
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
2Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y2
CO
OLIN
GC
IRC
ULATO
R
Y1
HE
ATING
MO
DE
OP
TION
S:R
EFER
TOA
UX
ILIAR
YC
ON
TACT
INFO
RM
ATION
FOR
W1
AND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
EnergySaving
Products12615-124
Street,Edmonton,A
BT5L-0N
8ESP315.08
CH
ILLEDW
ATERW
IRIN
G
1Stage
Cooling
(Only)
c/wchilled
watercirculator
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
Chilled
water
Circulator
CR
YG
THERMOSTATG
CR
Y
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
1Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y
CO
OLIN
GC
IRC
ULATO
R
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
2Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y2
CO
OLIN
GC
IRC
ULATO
R
Y1
HE
ATING
MO
DE
OP
TION
S:R
EFER
TOA
UX
ILIAR
YC
ON
TACT
INFO
RM
ATION
FOR
W1
AND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
EnergySaving
Products12615-124
Street,Edmonton,A
BT5L-0N
8ESP315.08
CH
ILLEDW
ATERW
IRIN
G
1Stage
Cooling
(Only)
c/wchilled
watercirculator
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
Chilled
water
Circulator
CR
YG
THERMOSTATG
CR
Y
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
1Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y
CO
OLIN
GC
IRC
ULATO
R
W1W
2C
RY2
Y1D
O/BG
YC
CHILLERCONTACTS
CR
YG
2Stage
Cooling
c/wchilled
watercirculator
THERMOSTATG
CR
Y2
CO
OLIN
GC
IRC
ULATO
R
Y1
HE
ATING
MO
DE
OP
TION
S:R
EFER
TOA
UX
ILIAR
YC
ON
TACT
INFO
RM
ATION
FOR
W1
AND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
HE
ATING
MO
DE
OPTIO
NS
:REFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
EnergySaving
Products12615-124
Street,Edmonton,A
BT5L-0N
8ESP315.08
HEAT
PUM
PC
/WC
ON
DEN
SERD
EFRO
STC
YCLE
BO
ILERB
AC
K-U
P
W1W
2C
RY2
Y1D
O/BG
1Stage
Cooling
2Stage
Heating
Heatpum
pc/w
condenserdefrostcycle
AN
TI-ICE
CO
NTR
OL
O/BY
RC
W1
CONDENSER
TT
DRYCONTACT
TOBOILER
EXTERNALSPDT
RELAY24
VACCOIL
EW2
CR
YG
EW
2C
RY
GO/B
THERMOSTATO/B
W1W
2C
RY2
Y1D
O/BG
O/BY2
Y1R
CW
1
CONDENSER
EW
2C
RY2
GO/B
THERMOSTAT
Y1
AN
TI-ICE
CO
NTR
OL
EW
2C
RY2
GO/B
Y1
EXTERNALSPDT
RELAY24
VACCOIL
TT
DRYCONTACT
TOBOILER
2Stage
Cooling
3Stage
Heating
Heatpum
pc/w
condenserdefrostcycle
HE
ATING
MO
DE
:RE
FER
TOA
UX
ILIAR
YC
ON
TACT
INFO
RM
ATION
FOR
W1
AND
W2
HE
ATING
MO
DE:R
EFE
RTO
AU
XILIAR
YC
ON
TAC
TIN
FOR
MATIO
NFO
RW
1A
ND
W2
© 1995-2013 Energy Saving Products Ltd.
HE-Z Fan Coil - Extended Wiring DiagramsExtended wiring diagrams for the various applications the Hi-Velocity HE-Z model can be used for. If you do not find the wiring configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.
Module WIR Hi-Velocity Wiring and Settings (7/10)
Module WIRHi-Velocity Wiring & Settings (7/10)
www.hi-velocity.com
© 1995-2013 Energy Saving Products Ltd.
Extended wiring diagrams for the various applications the Hi-Velocity HE-Z model can be used for. If you do not find the wiring configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.
HE-Z Fan Coil - Extended Wiring Diagrams
Module WIR Hi-Velocity Wiring and Settings (8/10)
Module WIRHi-Velocity Wiring & Settings (8/10)
En
erg
y S
avin
g P
rod
ucts
12615-1
24 S
treet,
Ed
mo
nto
n, A
B T
5L
-0N
8E
SP
315.0
8
HE
AT
PU
MP
C/W
CO
ND
EN
SE
R D
EF
RO
ST
CY
CL
EE
LE
CT
RIC
BA
CK
-UP
2 S
tag
e C
oo
lin
g 3
Sta
ge H
eati
ng
(E
lectr
ic)
Heat
pu
mp
c/w
co
nd
en
ser
defr
ost
cycle
W1
W2
CR
Y2
Y1
DO
/BG
R Y1 W2 W1 X1 X2Y2C
A3 A2 A1L N
J5J7
J4
OP
TIO
NA
L
15-2
3 K
W U
NIT
ST
HR
OU
GH
TH
ER
MO
STA
T
STA
GIN
G T
HE
AN
TI-
ICE
CO
NT
RO
L
O/B
YR
CW
1
CO
ND
EN
SE
R
THE
RM
OS
TAT
EL
EC
TR
IC S
TR
IP2
4V
TE
RM
INA
LS
TW
OS
TA
GE
C 1 2
12
C RiRo
H1J9
O/B
YR
GC
W2
E
1 S
tag
e C
oo
lin
g 2
Sta
ge H
eati
ng
(E
lectr
ic)
Heat
pu
mp
c/w
co
nd
en
ser
defr
ost
cycle
SE
T A
UX
ILIA
RY
TIM
ER
TO
TH
E “
OF
F”
PO
SIT
ION
W1
W2
CR
Y2
Y1
DO
/BG
R Y1 W2 W1 X1 X2Y2C
A3 A2 A1L N
J5J7
J4
C RiRo
H1J9
OP
TIO
NA
L
15-2
3 K
W U
NIT
ST
HR
OU
GH
TH
ER
MO
STA
T
STA
GIN
G T
HE
EL
EC
TR
IC S
TR
IP2
4V
TE
RM
INA
LS
TW
OS
TA
GE
C 1 2
12
O/B
Y2
Y1
RC
W1
CO
ND
EN
SE
R
EW
2C
RY
2G
O/B
THE
RM
OS
TAT
Y1
AN
TI-
ICE
CO
NT
RO
L
EW
2C
RY
2G
O/B
Y1
SE
T A
UX
ILIA
RY
TIM
ER
TO
TH
E “
OF
F”
PO
SIT
ION
12
C 1 2SIN
GL
ES
TA
GE
C 1 2
TW
OS
TA
GE
C 1 2
SIN
GL
E S
TA
GE
EL
EC
TR
IC S
TR
IPIN
TE
RN
AL
24
V
For
optio
nal e
nerg
y sa
vings
inst
all
a o
utd
oor
therm
ost
at to
lim
it th
e u
se o
f th
e s
eco
nd s
tage
of th
e E
SH
. F
or
exa
mple
- 2
sta
gin
g the e
lect
ric
strip in
terr
upt “C
” and “
1”
or
“C”
and “
2”
with
a
outd
oor
stat as
show
n b
elo
w. T
his
allo
ws
single
st
age o
f th
e tw
o b
anks
of th
e e
lect
ric
strip to
act
ivate
, th
e s
eco
nd s
tage w
ill b
e a
llow
ed to
act
ivate
by
the o
utd
oor
stat.
OP
TIO
NA
L T
HR
OU
GH
OU
T D
OO
R T
HE
RM
OS
TA
TS
TA
GIN
G T
HE
15-2
3 K
W U
NIT
S
WIR
ING
FO
R E
LE
CT
RIC
AL
ST
RIP
HE
AT
ER
(E
SH
)
THE
RM
OS
TAT
WC
RY
G
WC
GR
Y
W1
W2
CR
Y2
Y1
DO
/BG
R Y1 W2 W1 X1 X2Y2C
A3 A2 A1L N
J5J7
J4
1 S
tag
e H
eati
ng
21
EL
EC
TR
IC S
TR
IPC
ON
TA
CT
S 2
4V
AC
www.hi-velocity.com
+-
W1 W2 C R Y2 Y1 D O/BG
RY
1W
2W
1X
1X
2Y2
CF
1
AU
XIL
IAR
Y R
EL
AY
(HE
AT
ING
)
LL
L2L2 N L1 L1
A3
A2
A1
LN
CO
OL
HE
AT
FA
NL
ED
L1
J8
ON
OFF
H2TIMER
AUTO
MAN
H3MODE
ON
OFF
H4DELAY
J5
J7
J4
U2
J3
R8
R7
R6
GC
HF
- +
J2
N
CR
iR
o H1
J9
J1
LE
D
L2
PSB CIRCUIT BOARD
THERMOSTAT
24
v O
UT
PU
TE
ME
RG
EN
CY
DIS
CO
NN
EC
T
- +
© 1995-2013 Energy Saving Products Ltd.
Hertz Output Outlet Velocity Static PressureCooling Mode: 55-66 Hz 1250-1400 FPM 0.8-1.2”WC
Heating Mode: 45-66 Hz 1100-1400 FPM 0.6-1.2"WC
Constant Fan: 25-35 Hz 500-900 FPM 0.2-0.5”WC
Quick Reference Guide
Fan Adjustment Trim PotsIncrease Airflow (Clockwise)
Decrease Airflow (Counter Clockwise)
Jumper Pin Settings
LED DescriptionLED 1 - Pump timer/Operation Mode Indicator Light
LED 2 - Pressure Sensor Indicator Light
Quick System Setting Reference
H1 Emergency Disconnect: (Remove pin to activate)
H2 Timer: Activates auxiliary relay for 5 min every 24 hours.
H3 Mode (Auto): Blower output speed modulates dependent upon static pressure.
H3 Mode (Manual): Blower output speed operates at fixed flow rate.
H4 Delay: Cooling/20 second, heating/30 second fan delay, and 30 second post purge.
Note: If trim pots don’t modulate the blower speed, check S/A Static Pressure pressure hose orientation and make sure the t-stat call is the same as the trimpot being adjusted.
10 VDC Black Wire (-)
10 VDC Red Wire (+)
Trim Pots (Cooling, Heating & Constant Fan)
Atmospheric PressureS/A Static Pressure
On: (Active)
On: (Inactive)
Off:
Pump Timer Status: Fan Operation Mode:
No Light
2 Seconds 2 Seconds 2 Seconds
= Light On
= Light Off
G
W
Y
D
- Hertz will be displayed on the Variable Frequency Drive digital display.- Outlet velocity is based on ideal noise levels.- Static Pressure reading must be taken perpendicular to airflow, minimum of 18” away from supply air collar of fan coil.- Quick references should only be used to roughly set fan coil, not
to be used as primary fan coil set up method.
Note:
Module WIR Hi-Velocity Wiring and Settings (9/10)
Module WIRHi-Velocity Wiring & Settings (9/10)
Pump timer & Mode Indicator Light Sequence (Green LED1):
www.hi-velocity.com
© 1995-2013 Energy Saving Products Ltd.Module WIR Hi-Velocity Wiring and Settings (10/10)
Module WIRHi-Velocity Wiring & Settings 10/10)
To set the fan coil, the required airflow capacity must be determined for each operating mode. The required CFM/Ton is 250, 200, and 125 for Cooling, Heating and Recirculation Fan respectively. Divide the total CFM required for each fan speed by the total number of outlets. Keep in mind that each HE outlet represents 2 2” outlets, and 2” outlets represent 1. This will provide the average CFM per outlet. After all airflow capacities have been determined, convert the Airflow per outlet to Velocity per Outlet. This will make setting the fan coil easier. Do this by dividing CFM per outlet by 0.022. This will provide FPM per 2” outlet. Divide CFM per outlet by 0.021 to provide FPM per HE outlet. Determining velocities per outlet for HE and 2” is important. The ideal outlet velocity that is calculated on page 1 & 2 of the commissioning report will be used when setting the airflow of the system. After the average outlet has been determined, the calculated ideal velocity per outlet will be what the average outlet should be set at.
System Commissioning & Set-up
Determining Preliminary System Information
There are two different control methods used by the Pressure Sensing Circuit Board (PSB): Manual mode and Automatic mode. Both of these provide a 0-10vdc output signal to the variable frequency drive. Modes are selected by the H3 or “MODE” jumper pin located on the PSB. Fan speed adjustment for both modes is done via the trim pots (COOL, HEAT and FAN) located on the PSB circuit board. Auto mode is the primary control method, this utilizes a pressure sensor to modulate fan speed in order to maintain a constant supply air static pressure. Auto mode is necessary for fan control in zoning applications and is also the recommended method of fan speed control. Manual mode allows for direct speed control of the fan, bypassing the pressure sensor utilized in auto mode. Manual mode can be utilized in single zone applications but does not compensate for dirty filter or closed outlets.
Determining Control Method
Preliminary Adjustment- Ensure air lines are connected, secured and free from debris. - Power Fan Coil Unit- Ensure all zones and outlets are open- Energize the thermostat setting to be adjusted. (Cooling,
Heating, or Recirculation Fan)- Using a controls screwdriver, adjust the appropriate trim pot
(Cooling, Heating, or Recirculation Fan). A clockwise turn will increase the airflow output, while a counter-clockwise turn will decrease the airflow. Be sure to take note of the blue LED light present on the PSB circuit board.
- When the systems supply air static pressure has reached the set point of the trim pot and is operating within an acceptable range, the blue LED light on the PSB circuit board will flicker sporadically on and off to show that it is properly sensing pressure in the system.
- Be sure to wait 30 seconds between adjustments to allow the PSB circuit board to reach and maintain the set point.
- If the light on the PSB circuit board remains either off or on after 30 seconds, the current set point is outside the normal operating range and must be adjusted accordingly:
* No light indicates that the trim pot is set above normaloperating range and should be decreased (counter clockwise).
* A solid light indicates that the trim pot is set below normaloperating range and should be increased (clockwise).
- When all trim pots have been adjusted to normal operating conditions, determined by the “Quick reference Guide” on page 29, fine tuning of the PSB circuit board may commence.
With the preliminary adjustment set, fine tuning the PSB circuit board may commence. With the power on, all zone dampers opened, and the cooling speed energized, allow the fan 45 seconds to fully ramp up. Once the fan is fully ramped up, record velocity readings from all of the outlets (FPM or Knots). These outlet locations and velocity readings can be recorded on page 3 of the commissioning report. Ensure HE outlet velocities are recorded in section A (HE) of the chart and 2” outlet velocity are recorded in section B (2”) of the chart. When all outlet velocity reading have been recorded, pick a section (A or B) with the most outlets. Total all velocities in that section, and divide that number by the number of outlets in the section selected. This provides a true average velocity of that selected section. Now that the average velocity of one section (HE or 2”) has been determined, select one outlet in that section to make your average outlet. Now that we know what type of outlet our average is (HE or 2”), we can go back to the “Determining Preliminary System Information” section on pages 1 & 2 of the commissioning report and select the FPM per outlet that is specific to the type of average outlet we have.
Finding Average Outlet & Fine Tuning the PSB
Use the average outlet to fine tune the system by matching the average outlet’s velocity (FPM per outlet) to the velocity per outlet that was determined for each fan speed.
For full and proper tuning of the PSB circuit board, repeat the above process for heating and recirculation fan. The same average outlet that was determined in cooling mode can be used again for tuning the other modes.
When tuning is complete, cycle all zone dampers to verify total system operation.
Important Notes:• Initial adjustment of the PSB circuit board for cooling,
heating and recirculation fan must be done with all dampers in the open position, to verify maximum load capacities.
• To find outlet CFM:Multiply Knots by 2.2 for 2”, and by 4.2 for HEMultiply FPM by 0.022 for 2” and by 0.042 for HE• As the PSB circuit board takes up to 30 seconds to adjust
to changes in duct pressure, the use of slow acting electronic dampers is suggested for proper operation of the PSB circuit board. Fast acting spring return dampers are not to be used.
