HomeMy WebLinkAboutEquipment SubmittalMake Up Air Unit
Aquatic Bath
801 Northern Pacific RD SE
Yelm, WA 98597
ASEI Job No. 3843
March 6, 2018
Prepared by:
3602 S. Pine St.
Tacoma, WA 98409
Phone (253) 572-9484 Fax (253) 383-6337
Project Manager: Mike Riggins
For: Aquatic Bath
801 Northern Pacific Rd SE
Yelm, WA 98597
Attn: Paul Kimble (360 458 3900)
X13461
October 22, 2025
VSU-230-H50
Unit Performance
Design Conditions
Elevation (ft)Summer Winter (°F)Supply (CFM)Outdoor Air (CFM)DB (°F)WB (°F)
30 86.1 66.8 24.0 58,000 58,000
Unit Specifications
Qty Weight (lb)Cooling Type Heating Type Unit Installation Unit ETL Listing
1 5,691 (+/- 5%)None Direct Gas-Fired Outdoor ANSI Z83.4 / CSA 3.7
Configuration
Unit Orientation Unit Configuration Outdoor Air Intake Return Air Intake Supply Air Discharge
Vertical Constant Volume 100%
OA Bottom -Top
Heating Specifications
Type Gas Type
Gas Pressure Capacity (MBH)Temperature
Rise (°F)
Performance
Min
(in. wg)
Max
(Psi)Input Output EAT (°F)LAT (°F)
Direct Gas Natural 18 5 5,174.6 4,760.6 76.0 24.0 100.0
Air Performance
Type
Total
Volume
(CFM)
External SP
(in. wg)
Total SP
(in. wg)RPM Operating
Power (hp)
Fan
Qty Type Size (in.)Drive-Type
Supply 58,000 0.4 1.311 530 38.62 (x2)2 Forward Curve 30.2 Belt-Drive
Motor Specifications
Motor Qty Size (HP)Enclosure Efficiency RPM
Supply Fan Motor 1 40 TEFC NEMA Premium 1725
Electrical Specifications
Power Supply Rating (V/C/P)MCA (A)MOP (A)SCCR
Unit 460/60/3 65.9 110 5kA
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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CONSTRUCTION FEATURES AND ACCESSORIES
Unit
Unit Installation - Outdoor Std
Unit Construction - Double Wall X
Wall Insulation - 1in. fiberglass - Tempering on X
Corrosion Resistant Fasteners Std
Access and Connections - Right side when facing intake X
Service Access - Hinged access doors X
Unit Finish - G90 Galvanized X
Finish Color
Supply Fan - Belt-drive, forward-curved X
Supply Fan and Motor Vibration isolation - Neoprene X
Controls
Unit Controls - Microprocessor X
Remote Panel
BMS Communication - Monitoring and control
BMS Protocol
Temperature Control - Discharge control X
Supply Fan VFD - VFD by factory X
Supply Fan Control - Constant Volume X
Unoccupied Mode (Night Setback)
Recirculation Control
Control Accessories
Touchscreen Mounting
Heating Inlet Air Sensor X
Cooling Inlet Air Sensor
Dirty Filter Switch X
Fire Stat Type III (Ships loose)
120V/24V Smoke Detector (Ships loose)
Inlet Damper End Switch X
External Cooling Lockout Relay
Freeze Protection (Supply Air Low Limit)X
Auxiliary Supply Starter Contacts
Auxiliary Exhaust Starter Contacts
Airflow Proving Monitoring Contact X
Accessories
Factory Installed, Lockable, NEMA 3R Disconnect Std
Supply Air Filters - 2" aluminum, 20x25x2 - (42)X
Outdoor Air Inlet Damper X
Supply Air Outlet Damper
Return Air Damper
Diffuser
Unit Mounting Stand - 48 in X
Service Platform X
Fan Bearing Extended Lube Lines X
Inlet Damper Module
Spare Belts
Spare Filters
Motor with Shaft Grounding
Service Outlet
Service Lights
Gas Heating Accessories
Pilot Ignition Std
Flame Sensing - Flame rod X
Flame Safeguard Display X
Agency Approval - ETL Std
FM Compliant X
High Gas Pressure Switch X
Low Gas Pressure Switch X
Visual Indication Valves X
Proof of Closure Valve X
External Gas Pressure Regulator (Ships loose)
Carbon Dioxide Sensor (Ships loose)
Warranty Options
Unit Warranty - 18 months (std.)X
5 Year Compressor Warranty
5 Year Burner Warranty X
10 Year Burner Warranty
Standard Option Std
Not Included
Included X
Notes
The Inlet damper is a motorized general purpose damper, model VCD-20.
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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Fan Charts And Performance
Supply Fan Performance
Total Volume
(CFM)
External SP
(in. wg)
Total SP
(in. wg)RPM Operating
Power (hp)
Motor Fan
Qty Size
(HP)Qty Type Drive-Type
58,000 0.4 1.311 530 38.62 (x2)1 40 2 Forward Curve Belt
Pressure Drop (in. wg)
Diffuser Weatherhood Filter Damper Cooling Heating External Total
--0.128 0.158 -0.625 0.4 1.311
Sound Performance in Accordance with AMCA
Sound Power by Octave Band Lwa dBA Sones62.5 125 250 500 1000 2000 4000 8000
103 105 103 98 96 96 91 86 102 91 80
Supply Fan
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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Heating Specifications
Heating Performance
Type Gas Type
Gas Pressure Capacity (MBH)Temperature
Rise (°F)
Performance
Min
(in. wg)
Max
(Psi)Input Output EAT (°F)LAT (°F)
Direct Gas Natural 18 5 5,174.6 4,760.6 76.0 24.0 100.0
Gas Train Details
Redundant
Main
Valves
Electronic
Modulating
Valve
Pilot Valve Internal
Regulator
Visual
Indication
Valve
Proof of
Closure Valve
Gas Pressure
Switch(es)
External
Regulator
Std Std Std Std Yes Yes High & Low -
Additional Heating Information
ETL Approved FM Compliant Temperature
Control Flame Sensing Ignition Control CO2 Sensor Flame Safeguard
Display
Std Yes Discharge Flame Rod Pilot -Yes
Unit Details
92% thermal efficiency
Cast aluminum burner manifold with stainless steel mixing plates
Electronic modulation burner control
10 second pre-purge sequence
Low fire start
Gas and Electrical Connections
ELECTRICAL
CONNECTION
2 1/2" NPT GAS
CONNECTION
180.084
48.000
75.508
30.058
7.166
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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ELEVATION VIEW
180.084
63.206
48.000
Notes - Elevation View
Standard configuration for unit access is on the right-hand side, when looking into the unit intake in the direction of airflow.
Order of unit sections is from intake of unit to discharge of unit.
Sections included on this unit: Filter Section, Heating Section, Blower Section
Stand will ship separately from the unit.
Insulation: Double Wall, from Burner Section through end of unit.
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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PLAN VIEW
SUPPLY
DUCT
63.206
156.353
37.0006.315
15.176
103.500
Notes - Plan View
Standard configuration for unit access is on the right-hand side, when looking into the unit intake in the direction of airflow.
END VIEW
180.084
156.353
48.000
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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Clearance Specifications
Recommended Minimum Combustible Clearances
Floor (in.)Top (in.)Sides (in.)Ends (in.)
Insulated Units 0 0 0 0
Non-Insulated Units 0 6 6 6
Notes - Combustible Clearances
Clearance to combustibles is defined as the minimum distance required between the heating source and the adjacent combustible
surfaces to ensure the adjacent surface's temperature does not exceed 90 F above the ambient temperature.
Recommended Minimum Service Clearances
Housing 32 and less (in.)Housing 35 and higher (in.)
42 on the controls side of the unit 48 on the controls side of the unit
Notes - Service Clearances
To ensure ample space for component removal (evaporative cooling media, coils, filters, etc.), service clearances should be 6 in. wider
than the width of the module itself.
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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Wiring Diagram
GREENHECK
Building Value in Air.
LEGEND
R
CAUTION
UNIT SHALL BE GROUNDED IN ACCORDANCE WITH N.E.C.
POWER MUST BE OFF WHILE SERVICING.
NOTES
USE COPPER CONDUCTORS ONLY
60° C FOR TERMINALS RATED LESS THAN 100 AMPS.
75° C FOR TERMINALS RATED 100 AMPS OR MORE.
FIELD CONTROL WIRING RESISTANCE SHOULD
NOT EXCEED 0.75 OHM.
FIELD WIRED
FACTORY SUPPLIED AND WIRED
WIRE COLOR CODE
Wiring Diagram Code:
BK BLACK BL BLUE BR BROWN
GY GRAY LT BL LIGHT BLUE O ORANGE
PK PINK PR PURPLE R RED
W WHITE Y YELLOW
Wiring Template: Q20
4
AMP AMPLIFIER
D1 INLET DAMPER
D1L INLET DAMPER LIMIT
DS1 MAIN DISCONNECT SWITCH
FSC FIRE SYSTEM CONTACT
FSG FLAME SAFE GUARD
FU#FUSE
HLC HIGH LIMIT CONTROL
M#MOTOR
MOD MODULATING VALVE
OAT OUTDOOR AIR TEMP
OL#MOTOR OVERLOAD
PS1 DIRTY FILTER SWITCH
PS2 AIR PROVING SWITCH
PS3 LOW GAS PRESSURE SWITCH
PS4 HIGH GAS PRESSURE SWITCH
PS9 AIRFLOW PROVING SWITCH
R5 ALARM RELAY
R6 GAS VALVE STATUS RELAY
RE UNIT ENABLE RELAY
RF SUPPLY FAN RELAY
RH HEAT RELAY
S2 FAN SWITCH
S5 OCCUPIED/UNOCCUPIED SWITCH (OPTIONAL - REF. IOM)
CLOSED=UNOCCUPIED - OPEN=OCCUPIED
SAT SUPPLY AIR TEMP
SG SPARK GENERATOR
ST#MOTOR STARTER
TR#TRANSFORMER
V1 PILOT VALVE
V2 MAIN VALVE
VFD VARIABLE FREQUENCY DRIVE
L3
L2
L1
DS1
T3
T2
T1
L2
L3
L1 VFD T1
T2
T3
SUPPLY FANMOTOR
FU1
M1
D1 INLET DAMPER
C NO
PS1
GROUND
TO UNIT
MAIN POWER
460V
DOC NUMBER: ----REV: ----
V1
V2
101102
TR6
L2
V2
T1
SPARK
SG
T2
HV
10
9 110
109
103 FSG5
F
6
3
PS3
11
RH
14
105 106
107 108
PS2
20
NO C
PS4
104 NC C
HLC1
SENSOR
PS2
NC CCNO
4 7
G
39
38
21
C
20 VA
24 V
(115 V)(115 V)
DIRECT GAS CONTROL
101 102
TR3
115V
FU7
TO T6 (IN+) ON
AMP DDC CONTROL
RHA2 A1 POST HEAT
R5A1 A2
11
R5
14
SN
M1 M2
VFD
T3
MOD
T4
AMP T1
T2T5 (IN-)T6 (IN+)
DDC CONTROL
C TERMINAL "U6"
TO DDC J2
PS9 - AIRFLOW
PROVING SWITCH
CNC NO
67 6866
AIRFLOW PROVING / EXHAUST FAN INTERLOCK*
USER INTERFACE CONNECTIONS:
*USE AS A CONTROL SIGNAL WIRING BY OTHERS
DRY CONTACTS
J8
R
J2
J12
CONTROLLER
DDC
J11
C6
NC6
NO6
NO4
GOG
J1
NO3
C3/4/5
NO2
NO1
C1/2 R
C
J10
U1
U2
U3
U4
U5
U6
U7
U8
U9
U10
GND
ID1
ID2
GND
Y1
Y2
GNDJ8
GND
GND
term
-
+
GND
J3
Disp.Tx
/
R
x
+V
C
NO or NC ALARM
CONTACTS
SWITCHES ONACTIVE ALARM
OPTIONAL FIELD
S5 (OPTIONAL)
RE
11 14
G
S2 FSC
REA2 A1 UNIT ENABLECNC
POC
24
RE
21
TO A1 ON VFDA1 SUPPLY FAN CONTROL
24VACVALVE
101 R6A1 A2 110
11
R6
14
SAT
OAT
24V
TR1
FU615A
CLASS J600V
111 112
RFA2 A1 SUPPLY FAN
DL1
S4 S6 1817
VFDN-0-1
RF
11 14
S1 A1 AC
ON DDCTO Y1 C
GU41L693N020NX1NQ20
Manufacturer reserves the right to change, modify, or improve this product at anytime
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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SEQUENCE OF OPERATIONS
Unit Controls
The unit shall be provided from the factory with:
•24VAC Transformer
•Terminal Strip
•Supply Fan VFD
•Factory mounted and wired outdoor air inlet damper with actuator
Microprocessor Controller
The microprocessor control shall be factory programmed, mounted, wired and tested. Controller shall have a
lighted LCD display and keypad for changing set points and monitoring unit operation. The controller shall be
equipped with the following sensors:
•Outdoor air temperature sensor
•Supply discharge temperature sensor
Unit Start Command
A contact closure or jumper wire must be field wired between terminals R and G to enable the unit. When terminal
G is energized the unit shall operate as described below. When terminal G is de-energized the unit is disabled.
Internal Time Clock (Schedule)
The microprocessor controller is equipped with an internal 7-day programmable time clock, allowing the user to add
up to seven different occupancy schedules.
Occupied/Unoccupied Modes
The microprocessor controller offers the following modes for determining occupancy:
•The internal time clock
•A remote contact (see wiring diagram for details)
The unit can be temporarily overridden to the occupied mode via a dry contact or the keypad display. After the
override time has expired (1 hr, adj) the unit will return to the scheduled occupied/unoccupied mode.
Occupied Mode Unit Start-Up Sequence
•Unit enable input must be closed (contact closure between R and G).
•Initial delay, microprocessor controller initialization sequence.
•Factory mounted and wired outdoor air inlet damper actuator is powered open.
•Supply fan starts after adj. delay.
•Tempering operation begins (see modes below).
Supply Fan Sequence (Occupied)
The unit has been provided with a factory mounted variable frequency drive (VFD). The variable frequency drive
shall control the supply fan speed as indicated by the following sequence:
Constant Volume:
The VFD shall be programmed from the factory for a constant supply fan speed. This is to be adjusted for air
balancing only and is not to be modulated.
Heating Control
The heating will be locked out when the outside air is above the heating lockout set point (65 F adj.). When enabled
heating will be controlled as follows:
Direct Gas Fired Heating
The microprocessor controller will modulate the direct gas burner to maintain the active supply temperature set
point.
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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Supply Temperature Set Point Control (Occupied)
The active supply temperature set point shall be adjusted (field selectable):
•Locally at the controller.
Unoccupied Mode (Disabled)
•Supply Fan Is OFF
•Factory mounted and wired outdoor air inlet damper actuator is de-energized and spring returns to the
closed position.
Supply Air Low Limit
If the supply air temperature drops below 35 F (adj.) for 300 seconds (adj.), the controller will de-energize the unit
and generate an alarm.
Alarm Management
The microprocessor controller will monitor the unit status for alarm conditions. Upon detecting an alarm, the
controller will record the alarm description, time, date, available temperatures, and unit status for user review. A
digital output is reserved for remote alarm indication.
Possible Alarms Include:
•Global Alarm
Indication that one or more alarms are present.
•Outdoor Air Inlet Temperature Sensor Alarm
Outdoor Air Inlet Temperature Sensor Alarm: Failure of the outdoor air inlet temperature sensor.
•Supply Air Discharge Temperature Sensor Alarm
Failure of the supply air discharge temperature sensor. Unit is shut down.
•Supply Air Low Limit Alarm
Supply air has fallen below 35 F (adj.) for 300 seconds (adj.). Unit is shut down.
•Dirty Filter Alarm
Indicates the pressure across the filters has increased above the dirty filter pressure switch setting (field
adjustable)
•Direct Gas Burner Alarm
Indicates an ignition controller flame failure alarm. Requires manual reset at the unit.
•Supply Fan Alarm
Indicates the supply fan failed to prove for a 30 second (adj.) period.
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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Warranty Statement for Make-Up Air
Unit Warranty
Greenheck warrants the equipment to be free from defects in material and workmanship for a period of 18 months from the date of
shipment. Initial startup must be completed within six months of the shipment date, and a startup report must be submitted to
Greenheck.
DG Burner Extended Warranty
Greenheck warrants the direct-fired gas burner to be free from defects in material and workmanship for a period of 5 years from the
shipment date.The warranty does not include items deemed as consumable components, including, but not limited to: Igniters, Spark
rods, Spark generator, Flame rods,Flame wires, UV eye components, and associated components.
Note: Rust, discoloration of the burner material and cracks or holes smaller than .75 in. is not qualification for a defective burner.
Warranty Notes
Any component which proves defective during the warranty period will be repaired or replaced at Greenheck’s sole option when
returned to our factory, transportation prepaid. All warranties do not include labor costs associated with troubleshooting, removal, or
installation. Greenheck will not be liable for any consequential, punitive, or incidental damages resulting from use, repair, or operation
of any Greenheck product. These warranties are exclusive and are in lieu of all other warranties, whether written, oral, or implied,
including the warranty of merchantability and the warranty of fitness for a particular purpose. No person (including any agent or
salesperson) has authority to expand Seller's obligation beyond the terms of this warranty, or to state that the performance of the
product is other than that published by Seller.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.
Tempered Air Products (TAP) Statement 2018
09/02/2025Printed Date:
Aquatic BathJob:
Unit 3926 (40HP)Mark:
VSU-230-H50Model:
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