Spring Air Systems Truflow-TC User manual
Truflow-TC Touchscreen
Installation
And Operating Manual
_____________________________________________________________
Spring Air Systems Inc.
Oak ille, Ontario
Phone 866-874-4505, Fax 905-338-0179
info@springairsystems.com
www.springairsystems.com
May 2021
Spring Air Systems Truflow-TC Installation and Operating May 2021
2
TABLE OF CONTENTS Page
Introduction 4
What does TruFlow-TC do? 4
Automatic Design 5
Minimum Duct Velocity in the uilding Code 5
Sizing the Exhaust Ductwork 5
How many hoods can be connected to each exhaust fan 5
How does the TruFlow – TC work? 6
1. J-couple Probe 7
2. Microprocessor/HMI 7
3. Variable Frequency Drive 8
Description of the HMI (Human Machine Interface) 9
TruFlow – TC Operation 9
Sequence of Operations (Spring Air Systems Supply Unit – SFA) 12
Enclosure 12
Installation 12
A. Electrical Requirements 12
. Touch Screen Information 13
i) Dashboard Icons 14
1
Setting the Automatic Opening/Closing Times 15
2
Switching etween SUMMER/WINTER Conditions on Supply Air Fan 15
3
Toggle etween Kitchen 1 and Kitchen 2 15
ii) Fan Status Screen 16
iii)
Messages Screen 16
1
What to do in the Event of an Alarm 16
2
Common Alarms 17
iv)
Settings Screen 18
1
Logging In and Out of Settings Screen 18
v) Settings Icons 19
1
Changing Time of Day 19
2
Systems Options 20
a Remote Start/Stop 20
b Kitchen 2 Enable 20
c MUA VFD1 20
d Supply 2 20
e SUMMER/WINTER 1 and 2 20
f Auto Start (Thermal Start) 20
g Supply Averaging 20
h Double Interlock 20
3
Temperature Node Setting Instructions 21
4
Setting Auxiliary mA Values 21
5
Setting FLA Limits 21
6
K1/K2 MAX Air Duration timers 22
Surface Fire Alarm 22
Spring Air Systems Truflow-TC Installation and Operating May 2021
3
TABLE OF CONTENTS (Continued)
Page
Local Service Company Contact Information 23
Appendixes 24
A VFD Installation Manuals 24
TruFlow – TC Start up Report Form 28
Spring Air Systems Truflow-TC Installation and Operating May 2021
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Truflow-TC Touchscreen
Installation & Operating Manual
Introduction
The average commercial kitchen exhaust system operates 12 to 18 hours per day. Today’s kitchen systems
exhaust at 100% capacity henever they are turned on regardless of that number of appliances or amount
of cooking that is going on under the hood. The cook ill arrive at 7:00 a.m. in the morning and s itch the
system on for the day. The system is not shut off until the last person leaves the kitchen at the end of the
day. The reality is that the amount of actual high capacity cooking is a very small part of the total
operating day.
Unfortunately hen the exhaust runs continuously at full volume all day, so ill the fresh air supply unit
heating and cooling fresh air to replace the exhaust from the kitchen.
The Truflo -TC system reduces the amount of air exhausted from the kitchen to match the amount of
cooking. As more appliances are used the exhaust and supply volume increases, as less appliances are used
the exhaust and supply volume decreases.
What does Truflow-TC Do
Truflo -TC ill automatically reduce the exhaust and supply air into the kitchen henever appliances are
not used at full capacity. The Truflo -TC is a simple, inexpensive ay to achieve energy savings by
reducing the exhaust and supply volume required for your commercial kitchen. When the appliances are
not used and the related heat is turned do n or off, the Truflo -TC automatically senses this reduction and
decreases the amount of exhaust and supply to match exactly hat is happening under the exhaust hood.
The Truflo -TC duct mounted J-Couple monitors the hood exhaust temperature, hich fluctuates based on
the amount of appliances operating under the exhaust hood. As the amount of cooking increases, the
exhaust duct temperature rises and reaches equilibrium temperatures.
The duct temperature could reach as high as 150F and as lo 65F depending on the follo ing factors:
• Kitchen room temperature
• Total exhaust volume
• BTU rating of each appliance
• Total Volume of makeup
• Temperature of Makeup air
• Where the makeup air is introduced back into the kitchen,
• Type of hood over the appliance.
Fi nis hed Ceilin g
Ex h aust D u ct
Ex h aust F an
J-COU P LE
Ap p liance Line up
Finis hed Floor
Ex h aust H o od
To u c h sc ree n
Roo Deck
FRES H A I R
M a keu p A ir U nit
Va ria ble F r equ e n cy Driv e
The Truflow-TC System
Spring Air Systems Truflow-TC Installation and Operating May 2021
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Truflo -TC automatically changes the exhaust and supply to suit the actual cooking operation at any given
time during the cooking day.
Automatic Design
The TRUFLOW-TC is an automatic design that ill modulate the fan speed based on the rise and fall of
the duct-collar air temperature. If at any time during the cooking operation, the exhaust volume of air does
not keep up to smoke generated simply touch the MAX AIR button on the DASHBOARD screen. This
situation could occur hen:
Large quantities of greasy foods are tossed on the grill at one time or
A large tilting skillet or kettle is opened quickly or
A combination oven door is opened ithout releasing steam slo ly at door or
A draft from a door or indo opening.
Minimum duct velocity in the Building Code
The National Fire Protection Association, NFPA-96 2001, code changed to provide for a
reduction of the exhaust air from a commercial kitchen during lo demand periods. The
minimum duct velocity in the NFPA-96 2001 has been reduced from 1500 fpm to 500 fpm. In
addition, the International Mechanical Code, IMC, as changed in 2003 to allo for the
reduction in exhaust from a commercial kitchen during lo demand periods. The building and
fire departments have these codes in their possession and ill have no reason not to allo a
Truflo -TC installation any here in North America.
Sizing the Exhaust Ductwork
We recommend that the engineer size the exhaust duct ork for 1670 fpm velocity. The NPFA-96 code
allo s for a reduction in duct velocity to 500 fpm. By sizing the duct ork at 1670 for 100% exhaust and
duct velocity ill be 500 fpm at 30% exhaust volume.
How many hoods can be connected to each exhaust fan
The Truflo -TC is available for connecting up to t o exhaust fans ith t o supply fans and, a total of 12
exhaust hoods. You could have t o fans ith six hoods each or one fan ith t elve hoods. Maximum
energy savings ill be achieved ith t o fans and six hoods each arrangement, because the fans ould
operate as independent kitchens.
NFPA-96, 2001
8.2 Airflo
8.2.1 Air Velocity
International Mechanical
Code. 2003
Section 507 Commercial
Kitchen Hoods
507.1 General
Spring Air Systems Truflow-TC Installation and Operating May 2021
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Finished Ceiling
ONE EXHAUST FAN ONE HOOD
Exhaust Hood
1 1 0
AL1
AL2
C1C2
SV
SEL
F
Finished Ceiling
Exhaust Duct
Roof Deck
Exhaust Fan
185
ONE EXHAUST FAN/TWO HOODS
Exhaust Hood #1 Exhaust Hood #2
AL1
AL2
C1C2
SV F
1 1 0
SEL
Exhaust Duct
Roof Deck
Exhaust Fan
185
TRUFLOW-TC MODEL NUMBER
RPD-P 1 1 W TC 1 SC
One exhaust fan connected to panel (up to 2)
One supply fan connected to panel (up to 2)
W- Wall mounted panel
H – Hood mounted panel
T
C
-
Truflo
Cost
-
Effective
-
Variable Speed
1
-
Number of exhaust duct collars (up to
1
2 collars)
SC–Supply control signal
SV – supply variable speed drive
How does the Truflow-TC Work
The Truflo -TC consists of three primary components:
1. J-Couple.
2. Micro Processor/HMI
3. Variable Frequency Drives.
One and Two hoods with one exhaust supply fan
Spring Air Systems Truflow-TC Installation and Operating May 2021
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1. J-COUPLE
The J-Couple assembly is mounted in the exhaust duct collar of each hood, threaded through a
UL/ULC listed hood penetration fitting in the center of the duct collar. The J-Couple iring is
terminated in a special factory supplied J-Box. Where there are multiple hoods, the J-Couples are
connected in series. The last J-Couple assembly requires an EOL plug to complete the control circuit.
2. MICRO PROCESSOR/HMI
J-Couple Wire (Hood to Hood) and End of Line
(EOL) plug
J-couple probe in
exhaust duct collar as
seen from belo hood.
UL/ULC Listed
Duct Seal
Adaptor
Spring Air Systems Truflow-TC Installation and Operating May 2021
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The Micro Processor is a programmable logic controller (PLC) located in the RPD-P-TC control panel.
The sequence of operation, overrides, MAX AIR, and panel annunciation functions are all managed
through the PLC. The integral HMI (Human Machine Interface) orks as the command center for the
TruFlo TC system.
3. VARIBLE FREQUENCY DRIVE
The variable Frequency drives for the exhaust and/or supply fan are either located on the all beside
RPD-P-TC panel or in a cabinet mounted on the side of the hood or in the mechanical or electrical
room near the roof fans. The frequency that the VFD’s run at is derived from the hood temperatures as
measured by the J-couples.
Variable Frequency Drive control wiring
Terminal Strip and Power Supply
Vie inside RPD
enclosure sho ing
the terminal strip
connections, po er
supply and circuit
protector.
Variable Frequency Drive (VFD)
Spring Air Systems Truflow-TC Installation and Operating May 2021
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Variable Frequency Drive display and keys
TRUFLOW-TC Operation
The Microprocessor receives signals from the duct mounted J-Couple sensor and transmits a speed signal to
the VFD(s). The exhaust and supply motor Variable Frequency Drives (VFD) slo s or speeds up the
exhaust and supply fans to maintain the required volume depending on the amount of cooking.
TRUFLOW-TC
T-Couple
Kitchen Hood
Signal
Exhaust
Fan
Drive signal to motor
Drive signal to motor
SUPPLY FAN
Supply Volume Control with Variable Speed Supply Drive (VFD’s)
Spring Air Systems Truflow-TC Installation and Operating May 2021
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J-couple
Exhaust Hood
°F
1 1 0
Micro-Processor
Variable Speed Drive
185
100%
Spring Air SAA
Truflow-TC panel with two kitchens, 5 hood collars, two exhaust VFD and supply fan
Control signal only
Truflow
-
TC System op
erating at 100%
Table of contents
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