Greenheck Vari-Flow Air Management System(476251) - Manual (Page 10)

10 Vari-Flow Air Management System
Vari-Flow Connection Checklist
Power for Vari-Flow Cabinet
Connect 115 VAC power for controls (Terminals H, N)
Connect 115 VAC power for hood lights, one per light
circuit (Terminals H1, N1 | H2, N2 | H3, N3 | H4, N4)
Connect 115 VAC power to lights, one per light circuit
(Terminals B1, W1 | B2, W2 | B3, W3 | B4, W4)
Power to Variable Frequency Drives (VFD)*
Line power to VFD input, bottom left of VFD
(Terminals L1, L2, L3)
Load power from VFD output, bottom right of VFD
(Terminals T1, T2, T3)
Vari-Green® Fan Wiring* - if equipped
24 VAC from Vari-Flow to Vari-Green motor control wire,
black (Terminal E__-24)
0-10 VDC Speed Reference from Vari-Flow to Vari-Green
motor control wire, red (Terminal E__S+)
Common from Vari-Flow to Vari-Green motor control wire,
white (Terminal E__S-)
VFD Provided by Others, Control Wiring* - if equipped
Fault command from Vari-Flow to VFD provided by others
(Terminal E__-FA, E__-FB)
Run command from Vari-Flow to VFD provided by others
(Terminal E__-RA, E__RB)
Speed reference from Vari-Flow to VFD provided by others
(Terminal E__S+, E__S-)
Line power to VFD
Load power from VFD to fan
Make-Up Air VFD in Vari-Flow Wiring* - if equipped
24 VAC run command from Vari-Flow to make-up air unit
(Terminals S__-42, S__-43)
Tempering status from Vari-Flow to make-up air unit
(Terminals S__-44, S__-45)
Line power to VFD input, bottom left of VFD
(Terminals L1, L2, L3)
Load power from VFD output, bottom right of VFD to make-
up air disconnect (Terminals T1, T2, T3)
Make-Up Air VFD in Make-Up Air Wiring* - if equipped
24 VAC run command from Vari-Flow to make-up air unit
(Terminals S__-42, S__-43)
Tempering status from Vari-Flow to make-up air unit
(Terminals S__-44, S__-45)
0-10 VDC speed reference from Vari-Flow to make-up air
unit (Terminals S__-46, S__-47)
Auto Tempering - if equipped
Auto Heat/Cool enable
(Terminals S1-R, S1-W1, S1-Y1)
Fire System Microswitch
Fire system microswitch common to Vari-Flow (Terminal C1)
Fire system microswitch normally closed contact to
Vari-Flow (Terminal NC1)
Resistive Temperature Sensors* - installed in hood
Temperature Sensor T1 (Terminals T1-A, T1-B)
If more than one temperature sensor is used, wire the
following if applicable:
Temperature Sensor T2 (Terminals T2-A, T2-B)
Temperature Sensor T3 (Terminals T3-A, T3-B)
Temperature Sensor T4 (Terminals T4-A, T4-B)
Temperature Sensor T5 (Terminals T5-A, T5-B)
Temperature Sensor T6 (Terminals T6-A, T6-B)
Temperature Sensor T7 (Terminals T7-A, T7-B)
Temperature Sensor T8 (Terminals T8-A, T8-B)
Temperature Sensor T9 (Terminals T9-A, T9-B)
Temperature Sensor T10 (Terminals T10-A, T10-B)
Keypad - if equipped
Connect provided RJ25 cable from back of keypad to
CAREL® PCO5+ (Terminal J10).
Touch Screen - if equipped
Connect provided 2-wire cable from Vari-Flow
(Terminals 24H, 24C) to touch screen (Terminals G, GO)
Connect provided 3-wire cable from Vari-Flow
(Terminals -, +, GND) to touch screen (Terminals -, +, GND)
Remote Enable- if used
Connect remote enable common and normally open from
BMS to Vari-Flow (Terminals RE-1A, RE-1B)
Shunt Trip - if used
115 VAC from Vari-Flow to shunt trip breaker coil (provided
by others) (Terminals STH, STN)
Electric Gas Valve with Gas Reset - if equipped
115 VAC from Vari-Flow to gas solenoid
(Terminals SVH, SVN)
Spare Fire Relay Contacts - if equipped
Power to common (Terminal C3)
Power out, normally open, closed in fire (Terminal NO3)
Power out, normally closed, open in fire (Terminal NC3)
Power to common (Terminal C4)
Power out, normally open, closed in fire (Terminal NO4)
Power out, normally closed, open in fire (Terminal NC4)
High Temperature Alarm Contacts - if equipped
Power to common (Terminals HT-C)
Power out, normally closed, open in high temperature alarm
(Terminal HT-NC)
Power out, normally open, closed in high temperature alarm
(Terminal HT-NO)
Air Proving Switch(es) (provided by others) - if equipped
Common and normally open from supply fan 1 air proving
switch to Vari-Flow (Terminals AP-1A, AP-1B)
Common and normally open from supply fan 2 air proving
switch to Vari-Flow (Terminals AP-2A, AP-2B)
Common and normally open from supply fan 3 air proving
switch to Vari-Flow (Terminals AP-3A, AP-3B)
Common and normally open from supply fan 4 air proving
switch to Vari-Flow (Terminals AP-4A, AP-4B)
Wash Interface - if equipped
Wash input from waterwash control panel (WWCP) to
Vari-Flow (Terminals WI-1A, WI-1B)
Wash output from Vari-Flow to Grease Grabber H
2
O or
WWCP (Terminals WO-1A, WO-1B)
Low detergent input from Grease Grabber H
2
O or WWCP to
Vari-Flow (Terminals WD-1A, WD-1B)
* Wiring repeated based on the number of
fans of that type. This is based on the job
specific Vari-Flow wiring diagram.
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