Santa Fe ULTRA Series User manual

1
800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
Serial Number
Install Date
Sold By
Installation Instructions
The Santa Fe Ultra70 is a ventilating dehumidier
that integrates with the heating and cooling system
to provide the ultimate in comfort, health and
property protection through:
+ Dehumidication
+Outdoor Air Ventilation (Optional)
+MERV-13 Air Filtration
Patent: thermastor.com/patents
ULTRA SERIES | ULTRA70
TS-2017 02/23 Rev A
Santa-Fe-Products.com | 800.533.7533
* Previously the Ultra Aire 70H.
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Versión
La Página
26

2Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
REGISTRATIONS
THE SANTA FE ULTRA70 CONFORMS TO UNIFIED STANDARD UL 60335-2-40
AND CSA STANDARD C22.2.60335-2-40.
Safety Instructions........................................................................................3
Assembly & Installation ................................................................................4
Dehumidier Set Up ..................................................................................5-6
Attaching Duct Collars..................................................................................7
Electrical Requirements................................................................................8
Drain Installation...........................................................................................9
Ducting to HVAC Systems
Recommended HVAC System Installation ...............................11-12
Alternative HVAC System Installation.......................................13-14
Ducting to HVAC Systems (Closet Installations)
Recommended Closet Installation..................................................15
Alternative Closet Installation.........................................................16
Outdoor Air Ventilation ...............................................................................17
Determine Ventilation Requirements..............................................18
Controls .................................................................................................19-20
Air Filtration.................................................................................................21
MERV Rating Chart ..........................................................................22
Service ...................................................................................................23-24
Warranty ......................................................................................................25
Spanish Version ..........................................................................................26
Santa Fe is committed to manufacturing quality products. To maintain
our standards, product specications may change without notice.
4201 Lien Road, Madison, WI 53704
[phone]
Thermastor.com | Santa-Fe-Products.com
© 2019 Therma-Stor LLC
FOR REPAIR & TECH SUPPORT: 1-800-533-7533 (follow prompts)
or CONTACT US AT: [e-mail]
TABLE OF CONTENTS
1

3
800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
WARNING!
THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN
RESULT IN SERIOUS INJURY OR DEATH.
Read the installation, operation and maintenance instructions carefully before installing and
operating this device. Proper adherence to these instructions is essential to obtain maximum
benet from the Santa Fe Ultra Series Whole House Ventilating Dehumidier.
CAUTION!
THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN
RESULT IN INJURY OR MATERIAL PROPERTY DAMAGE.
CAUTION!
READ ALL INSTRUCTIONS BEFORE BEGINNING INSTALLATION.
ALWAYS USE CAUTION AND WEAR CUT RESISTANT GLOVES WHEN HANDLING SHEET METAL.
IMPROPER INSTALLATION MAY CAUSE PROPERTY DAMAGE OR INJURY.
INSTALLATION, SERVICE, AND MAINTENANCE MUST BE PERFORMED BY A QUALIFIED SERVICE
TECHNICIAN.
THE DEHUMIDIFIER IS HEAVY. HANDLE WITH CARE AND FOLLOW INSTALLATION INSTRUCTIONS.
NEVER OPERATE A UNIT WITH A DAMAGED POWER CORD. IF THE POWER CORD IS
DAMAGED, IT MUST BE REPLACED BY THE MANUFACTURER, ITS SERVICE AGENT, OR A SIMILARLY
QUALIFIED PERSON IN ORDER TO AVOID A HAZARD.
THIS APPLIANCE IS NOT INTENDED FOR USE BY PERSONS (INCLUDING CHILDREN) WITH REDUCED
PHYSICAL, SENSORY OR MENTAL CAPABILITIES, OR LACK OF EXPERIENCE
OR KNOWLEDGE, UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR INSTRUCTION
CONCERNING THE USE OF THE APPLIANCE BY A PERSON RESPONSIBLE FOR THEIR
SAFETY. CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT THEY DO NOT PLAY WITH THE
APPLIANCE.
WARNING!
120 VOLTS MAY CAUSE SERIOUS INJURY FROM ELECTRIC SHOCK. DISCONNECT
ELECTRICAL POWER BEFORE STARTING INSTALLATION OR SERVICING, AND LEAVE
POWER DISCONNECTED UNTIL INSTALLATION OR SERVICE IS COMPLETED.
SAFETY INSTRUCTIONS
2

4Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
Read all remaining steps and warnings before continuing.
a. Dehumidifier (1)
b. Leveling feet (4)
c. Filter - 9”x11”x1” MERV 13 (1)
d. 8” Round Duct Collars (2)
I
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I
H
U
M
I
D
N
O
R
M
A
L
D
R
I
E
R
OFFON
BEFORE TURNING ON UNIT:
1. CUT AND REMOVE ZIP TIE
2. PLUG HOLES USING
INCLUDED PLUGS
COM
FAN
24V
DEHU
*
DMPR
COM
FAN
24V
DEHU
*
DMPR
24V AC
COMP FAN
HONEYWELL REMOTE HUMIDISTAT
WIRING DIAGRAM
QUEST DEH 3000R CONTROL
WIRING DIAGRAM
ASSEMBLY & INSTALLATION
3
1. Unpack Box.
2. Check that you have all parts:
3. Register warranty at santa-fe-products.com

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800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
1. Important Precautions
• The device is designed to be installed indoors in a space that is protected from rain and flooding.
• Install the unit with enough space to access all sides for maintenance and service. The entire shell needs to
be removed in order to do repairs.
• Avoid directing the discharge air at people. The dehumidier should be used in the upright position.
• If used near a water source; be certain there is no chance the unit could fall into the water or get splashed
and that it is plugged into a dedicated circuit and Ground Fault Circuit Interrupter (GFCI) protected outlet.
• DO NOT use the dehumidier as a bench or table.
• Do not place the dehumidier directly on structural building members without vibration absorbers or
unwanted noise may result. Place the Santa Fe Ultra70 on supports to raise the base of the unit.
• A drain pan with a float switch must be placed under the dehumidier if installed above a living area or above
an area where water leakage could cause damage.
DEHUMIDIFIER SET UP
4

6Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
ELECTRICAL SERVICE
ACCESS THIS SIDE
6" MINIMUM CLEARANCE
FOR PROPER AIR FLOW
FILTER
9' POWER CORD
TOP VIEW
MINIMUM
CLEARANCE
FOR FILTER
(EITHER SIDE)
13"
B
B
RETURN AIR DUCT
SUPPLY AIR DUCT
A
B
C
A
DRAIN
ACCESS
2. Location Considerations
• Allow sufcient clearance to handle the unit’s overall dimensions as well as the necessary return and
supply ductwork to the unit.
• Allow sufcient clearance for lter removal and to prevent airflow obstruction.
• Electrical service access will require the removal of the outside shell. Allow sufcient clearance around the
unit.
• Locate the dehumidier in an area where the unit’s 9 ft. cord can easily reach electrical outlet.
• Locate the dehumidier in an area where eld wiring the control (low voltage) to the unit will be possible.
• A back draft damper is required in the supply duct of the Santa Fe Ultra70, especially when connecting to
the supply ducting system. The backdraft damper prevents supply air from counter flowing through the
Santa Fe Ultra70 when it is not operating. The dehumidier’s location should be chosen to allow installation
of this accessory if necessary.
• The Santa Fe Ultra70 may be suspended with the hang kit or a suitable alternative from structural members,
ensuring the assembly supports the dehumidier’s base in its entirety. Do not hang the Santa Fe Ultra70
from its’ cabinet.
• Allow for proper drainage and routing of needed drain pipes.
DEHUMIDIFIER SET UP
4

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800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
1. Outdoor Air Ventilation Duct
Outdoor air ventilation is optional. If setting up the unit to provide outdoor air ventilation, see page 10.
2. Return Air Inlet
An 8” diameter duct collar is attached to the unit.
3. Supply Air Outlet
An 8” diameter duct collar is attached to the unit. The back panel of the dehumidier can be rotated to allow for
horizontal flow through or vertical flow through of the supply air.
a. Horizontal Flow Through
The unit ships congured for a horizontal flow through.
b. Vertical Flow Through
Remove the exhaust panel using a T20 torx bit. Rotate the panel so the exhaust collar is located on the top
of the unit. Align screw holes and snap the panel onto the base. Secure the supply panel to the base by
replacing the six screws.
OUTLET DUCT
COLLAR WITH
BACK DRAFT
DAMPER
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
Front View
Horizontal Flow Through
(End Discharge)
AIR FLOW
Rear View
Vertical Flow Through
(Top Discharge)
8" Return Air Inlet
8" Supply Air Outlet
A
B
A
AB
A
8" Return Air Inlet
8" Supply Air Outlet
A
B
Top View
Front View
A
Rear View
B
B
Air Flow
Air Flow
B
OUTLET DUCT
COLLAR WITH
BACK DRAFT
DAMPER
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
RETURN AIR
INLET DUCT
COLLAR
FRESH AIR
INLET DUCT
COLLAR
Front View
Horizontal Flow Through
(End Discharge)
AIR FLOW
Rear View
Vertical Flow Through
(Top Discharge)
8" Return Air Inlet
8" Supply Air Outlet
A
B
A
AB
A
8" Return Air Inlet
8" Supply Air Outlet
A
B
Top View
Front View
A
Rear View
B
B
Air Flow
Air Flow
B
ATTACHING DUCT COLLARS
5

8Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
The Santa Fe Ultra70 plugs into a common grounded 115VAC outlet and draws 5.1 Amps. Locate the
dehumidier in an area where the unit’s 9 ft. cord can easily reach a 115 VAC electrical outlet with a minimum
of 15 Amp circuit capacity. If used in an area that may become wet, a GFCI protected circuit is recommended.
Consult local electrical codes for any further information.
Santa Fe offers a variety of control devices for use with the Santa Fe Ultra70. The controls are to be located
remotely from the dehumidier and placed in the space to be conditioned. Low voltage (24 Volt) controls can be used
with the Santa Fe Ultra70 and MUST be connected with low voltage (18-22 gauge) thermostat wire.
CAUTION!
DO NOT ALLOW THE 24V TERMINAL TO CONTACT THE COM/DMPR TERMINALS ON THE
SANTA FE ULTRA70 OR DAMAGE TO THE TRANSFORMER WILL RESULT.
1. Electrical Precautions
• Do not install the control where it may not accurately sense the relative humidity such as near HVAC
supply registers, near exterior doors, on an outside wall, near a window, or near a water source.
• The screw terminals on the Santa Fe Ultra70 and the control are labeled to prevent confusion.
• Be sure to consult the electrical schematic in the CONTROLS Section (page 12) of this manual or
inside the access panel of the Santa Fe Ultra70 before making control connections.
WARNING!
THE REMOTE CONTROLS OF THE SANTA FE ULTRA70 ARE POWERED BY A LOW VOLTAGE CIRCUIT (24VAC)
AND MUST NEVER CONTACT OR BE CONNECTED TO A HIGH VOLTAGE CIRCUIT.
CAUTION!
SOME OF THE SCREWS TERMINALS ON THE SANTA FE ULTRA70 MAY NOT BE USED WITH
CERTAIN CONTROLS AND SHOULD BE LEFT UNCONNECTED.
2. Wiring Schematic
C
COMPRESSOR
COMPRESSOR
CAPACITOR
WHT-3
S
YEL-7
BLK-4
24VAC
LINE
COM
COM
WHT-2
TRANSFORMER
N.C.
N.O.
COM
COIL
BLK-13
FAN RELAY
GRN-1
BLK-6
BLK-11
DEFROST
SWITCH
COMPRESSOR
RELAY
DEHUMIDISTAT
R
FAN
BLU-9
GRN-15
BRN-14BLK-13
FAN
CAPACITOR
RED CIRCUIT IS 24VAC CONTROL CIRCUIT
4038488 Rev. B
GRN-25
RED-20
RED-8
RED-8
BLK-28
RED-20
BLK-28BLK-10BLK-11
BLK-5
BLU-19YEL-33
YEL-17
RED-23
YEL-16
RED-23
RED-24
CIRCUIT
BREAKER
24V
RED-21
COMDMPR
DEHU
BLU-18
FAN
RED-24
RED-21
BLK-10
BLK-12
BLK-12
ELECTRICAL REQUIREMENTS
6

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800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
The Santa Fe Ultra70 generates condensate.
Place a secondary drain pan with a float switch under the dehumidier if it is suspended above a nished area or
in an area where water leakage could cause damage.
A drain trap is required for the dehumidier to run properly (see diagram below). Install a 3/4" threaded male
NPT adapter to the drain pan. Install a drain pipe assembly utilizing 3/4" PVC pipe to transport the condensate
to a drain. Pitch of drain should be 1" per 10'.
An optional condensate pump kit is available for use with the Santa Fe Ultra70 and may be installed if lift is
required to dispose of condensate. Condensate is automatically pumped to a remote location when the water
level in the pump’s reservoir rises to close the float switch.
The pump also contains a safety float switch. The white leads from this switch extend from beneath the pump
cover. This switch should be installed in series with the eld wire that connects to the common lead from the
Santa Fe Ultra70 to the control panel. If the pump fails, this switch opens the common control circuit and stops
water production before the reservoir overflows. Contact a qualied electrician to install the safety float switch to
the Santa Fe Ultra70 dehumidier.
Drain Installation
Front View
Secondary Drain Pan
Drain Port
Drain Trap
DRAIN INSTALLATION
7
Dehumidiers commonly use a negative air pressure drain pan. This causes air to flow backwards thru the drain
system which can cause water to pool inside the dehumidier and leak. A drain trap prevents this issue by trapping
water in the pipe to stop air from flowing backwards.
Please see the trap diagram below. This assembly can be made with common ¾” PVC pipe ttings. The pipe
measurements and placement of the cap and vent are critical to the function of the trap. Once trap is assembled, be
sure to ll with water.
3”
1.5”
VENT HEIGHT MUST
BE BELOW THE LINE

10 Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
CAUTION!
DO NOT CONNECT WITH A STATIC PRESSURE GREATER THAN OR EQUAL TO +0.5 WG.
CONTACT TECHNICAL SUPPORT AT [phone] FOR ADDITIONAL DETAILS.
Ducting Considerations:
• All flexible ducting connected to the Santa Fe Ultra70 should be UL listed.
• A short piece of flexible ducting on all Santa Fe Ultra70 duct connections is recommended to reduce
noise and vibration transmitted to rigid ductwork in the structure.
• Use a minimum 8" diameter round or equivalent rectangular duct for total duct lengths of up to 25'. Use
a minimum 10" diameter or equivalent for longer lengths.
• Grills or diffusers on the duct ends must not excessively restrict airflow.
• A length of 8" or more of insulated flex duct or any other vibration isolating material on the outlet of the
Santa Fe Ultra70 will reduce air noise from the blower.
• Effective dehumidication may require that ducting be branched to isolated, stagnant air flow areas.
When ducting to two or three areas, use 6" or larger diameter branch ducting. When ducting to four or
more areas, use 4" - 6" or larger diameter branch ducting. Provisions must be made to provide airflow
from supply locations to the central return location. Proper air distribution is important to ensure even
humidity control and heat distribution throughout the structure.
• DO NOT locate the return in a bathroom or a kitchen.
Decide Where To Place The Unit.
CAUTION! ALLOW FOR ENOUGH SPACING TO PROPERLY ROUTE YOUR RETURN AND SUP-
PLY CONNECTION
a. If You Place On Floor
Attach leveling feet and use
vibration pads and/or risers.
b. If You Hang Dehumidifier
Use 2 Brackets*Per Unit.
*Brackets sold separately.
Choose Weather To Place On Floor Or Hang Dehumidifier.
CAUTION! INTERNAL STOPS LIMIT FEET HEIGHT. DO NOT TIGHTEN FEET BEYOND THE RESIS-
TANCE PROVIDED BY STOPS.
Example Of Hanging Option:
*NOTE: LEVELING FEET HOLD
BRACKET IN PLACE
DUCTING TO HVAC SYSTEMS
8

11
800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
1. Recommended HVAC System Installations
a. Attic
The recommended installation draws air from a central location through a dedicated return to the
dehumidier and ducts the supply of the dehumidier to the air supply of the HVAC system. Utilize the
optional outdoor air ventilation duct to provide outdoor air.
• Install a dedicated 8" air return for the Santa Fe Ultra70 from a central area of the structure.
• Duct the supply of the Santa Fe Ultra70 to the supply of the HVAC system with a backdraft damper.
• If the existing system has multiple returns, instead of installing a dedicated return to the Santa Fe
Ultra70, it is possible to select one to disconnect from the existing HVAC system and use it for the
dedicated Santa Fe Ultra70 return. Select a return from a central location in the house that is always
open to the rest of the structure. DO NOT use a return from a room where doors are kept closed.
• DO NOT locate return in a bathroom or kitchen.
• Control should be located remotely from the dehumidier and placed in a central location.
Air Handler
HVAC Supply
Motorized
Damper
Optional
Outdoor Air
Intake
Ultra Series
Indoor Air
Return
Backdraft
Damper
Ultra Series
Supply
HVAC Return
Dedicated Santa Fe Return to HVAC Supply
DUCTING TO HVAC SYSTEMS
8

12 Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
DUCTING TO HVAC SYSTEMS
8
Ultra Series
Indoor
Air Return
DEH 3000
control
HVAC Return
Backdraft
Damper
Optional
Duct Tee
& Gravity
Damper
Motorized
Damper
Optional
Outdoor
Air Intake
HVAC Supply
Dry Air to
Basement
b. Installation in a Basement or Crawlspace
Install a separate 8" return for the Ultra70 in a central area of the structure. Duct the supply of the
dehumidier to the air supply of the HVAC system with a backdraft damper.
Optional: Duct the supply of the Ultra70 to a 8" x 8" x 8" tee/damper with a gravity draft damper, adjusted
to 20% open to the basement. CAUTION: Air takes the path of least resistance. If the upper levels of the liv-
ing space are not receiving the appropriate amount of dry air, this damper may need to be adjusted. When
the dehumidier is not running, there is a chance that air from the basement or crawlspace will make its way
back through the gravity damper and into the living space.

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800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
If the Recommended Dedicated Ultra Series Return to HVAC Supply Installation is not possible, there are several
alternative installation options available.
• DO NOT locate return in a bathroom or kitchen.
• Control should be located remotely from the dehumidier and placed in a central location.
• For basement and crawl space installations, an optional tee can be installed on the Ultra Series Supply.
a. HVAC Return to HVAC Supply
Check Damper should be in place
between the Return and Supply
connections of the dehumidier.
If Check Damper is not in place, the
HVAC fan must turn on when the
dehumidier is in operation.
If the system has greater than 0.5” WG
the ducting must be recongured.
HVAC Supply
Air Handler
Motorized
Damper
Optional
Outdoor Air
Intake
Optional Check Damper
(no HVAC fan needed)
HVAC
Return
Backdraft
Damper
Ultra Series
Supply
Ultra Series
Return
2. Alternative HVAC System Installation
DUCTING TO HVAC SYSTEMS
8
WARNING
DUE TO PRESSURE RESISTANCE IT IS NOT RECOMMENDED TO USE THE OPTIONAL OUTDOOR AIR INTAKE
WHEN INSTALLING THE DEHUMIDIFIER SUPPLY TO SUPPLY.
b. HVAC Supply to HVAC Supply
If Check Damper is not in place, the
HVAC fan must turn on when the
dehumidier is in operation. Air Handler
HVAC Supply
Optional Check Damper
(no HVAC fan needed)
Ultra Series
Supply
Ultra Series
Return
CAUTION!
TO AVOID THE DEHUMIDIFIER CYCLING IN AND OUT OF DEFROST, IT IS RECOMMENDED THAT THE LEAVING
AIR TEMPERATURE OF THE A/C COIL IS NOT BELOW 55°F. ALSO, THIS INSTALL IS NOT RECOMMENDED FOR
CLIMATES WERE THE HEATING SYSTEM WILL RUN DURING THE SPRING AND FALL TIMES OF THE YEAR, AS
THIS COULD DIMINISH THE WATER REMOVAL CAPABILITY OF THE DEHUMIDIFIER.

14 Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
d. HVAC Return to HVAC Return
If Check Damper is not in place, the
HVAC fan must turn on when the
dehumidier is in operation.
Air Handler HVAC
Supply
HVAC Return
Motorized
Damper
Optional
Outdoor
Air Intake
Optional Check Damper
(no HVAC fan needed)
Ultra Series
Supply
Ultra Series
Return
c. Dedicated Ultra Series Return to HVAC Return
Create a separate return for the Ultra
Series Dehumidier in a central area of
the building.
Installing the supply air from the Ultra
Series Dehumidier to the return of the
HVAC system requires the HVAC fan to
run when the Ultra Series Dehumidier
is operating.
Air Handler
HVAC
Return HVAC Supply
Ultra Series
Supply
Ultra Series
Indoor Air Return
Motorized
Damper
Optional
Outdoor Air
Intake
Backdraft
Damper
Motorized
Damper
Ultra Series
Supply
Ultra Series
Return
Ultra Series
Indoor Air
Return
Optional
Outdoor
Air Intake
e. No Existing Ductwork Installation
When installing the Ultra Series Dehumidier in a structure that does not have a forced-air HVAC system or is
not being tied into the system, a single return for the Ultra70 should be installed in a central location.
Install a 6” insulated duct from outside, teeing into the 8” return duct of the Ultra Series Dehumidier to provide
outdoor air ventilation (optional).
The supply of the Ultra Series Dehumidier should be ducted to the rooms in the home that have the ductless
mini-split heads and as close to the heads as possible. Be sure to utilize multiple rooms to allow air inside the
structure to properly circulate. Proper air distribution is important to ensure even humidity control and heat
distribution throughout the structure.
A 6” diameter duct is recommended for branches to bedrooms. An 8” diameter duct is recommended for
branches to larger areas.
• DO NOT locate return in a bathroom or
kitchen.
• DO NOT locate the supply in rooms
where doors may be closed.
• Control should be located remotely
from the dehumidier and placed in a
central location.
CAUTION!
PLEASE NOTE: RETURN TO RETURN INSTALLS ARE TO BE CONSIDERED LAST RESORT OPTIONS AND
ARE NOT RECOMMENDED. THE DEHUMIDIFIER WILL HEAT THE AC COOLING COILS WHICH DIMINISHES
THE AMOUNT OF WATER THE AC SYSTEM WILL REMOVE WHEN OPERATING. IF THIS INSTALLATION IS
CHOSEN, THE DEHUMIDIFIER MUST ACTIVATE THE HVAC BLOWER AND AC CALLS NEED TO LOCK OUT THE
DEHUMIDIFIER FROM RUNNING. PLEASE CHECK YOUR LOCAL CODES PRIOR TO INSTALLING.
DUCTING TO HVAC SYSTEMS
8

15
800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
Central Return to HVAC Supply
Duct the supply of the Ultra Series
Dehumidier to the supply of the
existing HVAC system with a backdraft
damper.
Backdraft
Damper
HVAC
Supply
Ultra Series
Supply
HVAC
Return
Ultra Series
Return
Due to space limitations, a closet installation may require additional considerations. Locate the dehumidier under
or next to the HVAC system as space allows. A passive vent or louver door is required to allow air to be pulled in
from the living space.
• No inlet duct is required. Air is pulled through the louvers or grille from the living space.
• Control should be placed in a central location or the onboard control can be used for this installation.
• Where inlet space is restricted, the inlet duct collar is optional.
• Where outlet space is restricted, the outlet duct collar is optional or vertical flow through may be preferred.
1. Recommended Closet Installation
WHEN INSTALLING THE DEHUMIDIFIER AS PART OF A COMBUSTION TYPE HVAC SYSTEM (GAS, OIL, PROPANE,
ETC.), FOLLOW ALL LOCAL AND NATIONAL BUILDING AND SAFETY CODES.
WARNING!
DUCTING TO HVAC SYSTEMS (Closet Installations)
9

16 Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
2. Alternative Closet Installation
If the Recommended Closet Installation is not possible, there are alternative installation options available.
• No inlet duct is required. Air is pulled through the louvers or grille from the living space.
• Control should be placed in a central location or the onboard control can be used for this installation.
a. Central Return to HVAC Return
Duct the supply of the Ultra Series
Dehumidier to the return side of the
existing HVAC system.
In a central return system, the HVAC
fan must run when the dehumidier is
running.
Backdraft
Damper
HVAC
Supply
Ultra Series
Supply
HVAC
Return
Ultra Series
Return
b. No Duct - Central Return to HVAC Return
Attach outlet duct with a vertical flow
through so air is not discharged into
wall or other obstruction. The HVAC
system will naturally pull dehumidied
air from the closet and distribute it
throughout the structure.
HVAC
Supply
Ultra Series
Supply
HVAC
Return
Ultra Series
Return
DUCTING TO HVAC SYSTEMS (Closet Installations)
9
CAUTION!
PLEASE NOTE: RETURN TO RETURN INSTALLS ARE TO BE CONSIDERED LAST RESORT OPTIONS AND ARE
NOT RECOMMENDED. THE DEHUMIDIFIER WILL HEAT THE AC COOLING COILS WHICH DIMINISHES THE
AMOUNT OF WATER THE AC SYSTEM WILL REMOVE WHEN OPERATING. PLEASE CHECK YOUR LOCAL
CODES PRIOR TO INSTALLING.

17
800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
DUCTING TO HVAC SYSTEMS (Closet Installations)
Outdoor air ventilation is optional.
Outdoor air may be brought into the structure by connecting an insulated duct from outside the structure to
a tee located in the inlet duct of the Santa Fe Ultra70. A ventilation control is needed to program the time and
frequency that the unit introduces outside air. The time and frequency of ventilation should be based on the size
and occupancy of the residence.
• The 6" outdoor air ventilation duct should tee into the 8" round collar on the front of the Santa Fe
Ultra70.
• An insulated 6" diameter duct can provide up to 55 CFM of outside air.
• Performance of the Santa Fe Ultra70 can be impacted by inside and outside air conditions.
• When a 6" motorized damper is used, a digital control is required.
• It may be necessary to use 8" duct work if additional outdoor air is required.
• In cold climates or at times when the dew point is low, ventilation can be used to dehumidify the
structure, making the Santa Fe Ultra70 capable of year-round drying.
B
Motorized Damper
6" Optional Outdoor
Air Intake
8" Return Air Inlet
8" Supply Air Outlet
A
B
C
Outdoor Air
90°F, 65%RH
Hot Climate
A
Mixed Air
Mixed Air
75°F
75°F
65%RH
65%RH
Mixed Air
75°F
65%RH
Indoor Air
70°F, 50%RH
B
C
Outlet Air
75°F, 65%RH
B
Motorized Damper
6" Optional Outdoor
Air Intake
8" Return Air Inlet
8" Supply Air Outlet
A
B
C
Outdoor Air
30°F, 65%RH
Cold Climate
A
Mixed Air
Mixed Air
59°F
59°F
51%RH
51%RH
Mixed Air
59°F
51%RH
Indoor Air
70°F, 50%RH
B
C
Outlet Air
59°F, 51%RH
1. 
Outside air mixes with return air prior to beginning the dehumidication process. Outside
and inside temperature and relative humidity will impact the combined outlet air conditions.
OUTDOOR AIR VENTILATION
10

18 Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
Option 1: Calculating Airflow Requirement Using ASHRAE 62.2-2016 Airflow Equation
ASHRAE Airflow in CFM = [House Area in Sq.Ft. x 0.03] + [(Number of Bedrooms +1) x 7.5]
NOTE: Use ‘Number of Bedrooms + 1’ or ‘Number of Occupants’, whichever is larger.
Example 1: Number of Bedrooms + 1
1800 square foot house with 3 bedrooms, 4 occupants = [1800 X 0.03] + [(3+1) X 7.5] = 84 CFM
Example 2: Number of Occupants
1800 square foot house with 3 bedrooms, 5 occupants = [1800 X 0.03] + [5 X 7.5] = 91.5 CFM
Record the required CFM ____________
1. Determine Ventilation Requirements
The MINIMUM ventilation requirement is calculated using ASHRAE 62.2-2016. Use one or both of the options below
to determine your ventilation requirement. Follow all local and national building and safety codes.
Option 2: Calculating Airflow Requirement Using Table 4.1 from ASHRAE 62.2-2019
Ventilation Air Requirements, CFM
Record the required CFM ____________ Table 4.1 from ASHRAE 62.2-2019
Floor Area
(ft2)
Number of Bedrooms
12345
<500 30 38 45 53 60
501-1000 45 56 60 68 75
1001-1500 60 68 75 83 90
1501-2000 75 83 90 98 105
2001-2500 90 98 105 113 120
2501-3000 105 113 120 128 135
3001-3500 120 128 135 143 150
3501-4000 135 143 150 158 165
4001-4500 150 158 165 173 180
4501-5000 165 173 180 188 195
OUTDOOR AIR VENTILATION
11

19
800.533.7533 | Santa-Fe-Products.com Santa Fe ULTRA70 Installation & Operation Instructions
The Santa Fe Ultra70 features a built-in dehumidistat control as well as the ability to wire a separate remote mounted
control to the unit.
If using the built-in dehumidistat to control the unit, locate the unit in an location where it can accurately sense the
humidity of the area where humidity control is desired. Adjust the humidity control so that the unit maintains the
desired level of humidity.
If the Santa Fe Ultra70 is located outside of the area where humidity control is desired, consider using a remote wired
humidity controller that is located in the area where humidity control is desired. In this conguration the built in
dehumidastat should be set to off. Santa Fe offers the DEH 3000 proprietary remote mounted control. The DEH 3000
monitors and controls relative humidity and proper ventilation levels in their home. This control is also available in a
version that has remote sensing capability called the DEH 3000R.
NOTE: The DEH 3000 is sold separately. Other thermostats are compatible with the Santa Fe Ultra70.
CAUTION!
DO NOT ALLOW THE 24V TERMINAL FROM THE SANTA FE ULTRA70 TO CONTACT THE COM
TERMINAL ON THE SANTA FE ULTRA70 OR DAMAGE TO THE TRANSFORMERS WILL RESULT.
a. Circuit Breaker
To prevent damage to the 24 volt control transformer, the Santa Fe Ultra70 comes with a resettable circuit
breaker. Check wiring for any electrical short and repair before resetting breaker. Resetting the circuit breaker
without correcting the electrical short may result in transformer damage. Be sure to check the electrical
schematic in this manual or inside the access panel of the Santa Fe Ultra70 before making any control
connections. The reset button for the circuit breaker can be found on the back of the unit.
b. Control Connections
The control and the Santa Fe Ultra70 are labeled to prevent confusion. Depending on the control, some of the
screw terminals on the Santa Fe Ultra70 may not be used. Be sure to consult the electrical schematic in this
manual or inside the access panel of the Santa Fe Ultra70 before making control connections.
1. Wiring Controls
Rear View
Circuit Breaker Reset Button
CONTROLS
12
COM
FAN
24V
DEHU
*
DMPR

20 Santa Fe ULTRA70 Installation & Operation Instructions Santa-Fe-Products.com | 800.533.7533
A low voltage control must be used with the Santa Fe Ultra70.
NOTE: 18 gauge wire needed between the Santa Fe Ultra70 dehumidier and the external control.
COM 24VAC Power Transformer Neutral Side
FAN Fan Control
24V Transformer High Side
DEHU Dehumidication (Fan and Compressor) Control
DMPR 24VAC Power Transformer Neutral Side
* Spare Terminal (Open)
Between the COM lead and the 24V TERMINAL is a 40VA transformer. This low voltage power source powers
the relay coils which control the fan and compressors. This 24VAC transformer can also be used to power
HVAC accessories external to the dehumidier.
Compressor ON/Fan On Make contact between 24V and DEHU terminals
Compressor OFF/Fan On Make contact between 24V and FAN terminals
Power HVAC Accessory Connect the accessory to the DMPR and 24V terminals
CONTROLS
12
2. Terminal Block Control Operation