TJERNLUND XCHANGER X2D Installation Instructions Manual Download Page 4

XCHANGER OPERATION BASED ON AIR CHANGES PER HOUR

This method of operation can be used to supplement or provide for guaranteed air change rates.  Table 1 shows the constant Cubic
Feet Per Minute (CFM) of air necessary to produce the desired Air Change Per Hour rate (ACH), assuming natural infiltration of out-
side air at a rate of .10 ACH.  Square footage is determined by calculating the finished living space of the house.  Garages and crawl
space should not be included.  The constant CFM figures shown assume that the living space has standard 8 foot ceilings.

1. Determine square footage of house living space on left hand column.

2. Pick desired air change rate from top row. 

3. Locate intersection of these points to determine constant CFM that should be obtained to meet desired ACH.

The X

CHANGE

R

TM

will provide 180 CFM with both fans and 90 CFM with one fan operating. Where the CFM delivery of the

X

CHANGE

R

TM

exceeds that listed in Table 1, a standard plug-in timer can be set so the X

CHANGE

R

TM

is cycled to obtain the 

desired ACH or Tjernlund’s optional SCP speed control may be used.

EXAMPLE

3000 square feet of living space

.2 ACH desired ventilation rate equals 40 CFM

X

CHANGE

R

TM

capacity of 90 CFM (with one fan running) 

In this example the plug-in timer may be set so that the X

CHANGE

R

TM

operates for one half hour straight each hour or two fifteen

minute periods each hour.

RECOMMENDED INSTALLATION LOCATION

The X

CHANGE

R

TM

may be mounted anywhere in the house. The best place to mount it is the basement through the rim joist on top of

the foundation wall. 

WARNING: 

Do not exhaust air from mechanical room unless makeup air is also supplied or equipment in mechanical room is sealed 

combustion. Carbon monoxide poisoning may result. Use the DT2-6 6” duct take-off kit so exhaust can be removed from 
outside the mechanical room if necessary. 

It is required that the X

CHANGE

R

TM

be installed in a location where it will not be directed at the occupants. Do not discharge intake air

onto water pipes or other equipment which may be affected by temperature extremes.

Do not terminate adjacent to thermostat. Outside temperatures can disrupt normal thermostat operation.

Do not terminate within three feet from a barometric draft control or intake grille of a heating appliance.

XCHANGER HOOD TERMINATION CLEARANCES

Install X

CHANGE

R

TM

in accordance with BOCA national Mechanical Codes M-306.1 and M-306.1.1 as follows, (See Diagram A).

M-306.1 LOCATION:

Outside air exhaust and intake openings shall be located a minimum of 10 feet (3048mm) from lot lines or build-

ings on the same lot. When openings front on a street or public way, the distance shall be measured to the centerline of the street or
public way.

M-306.1.1 INTAKE OPENINGS: 

Outside air intake openings shall be located a minimum of 10 feet (3048mm) from any hazard or

noxious contaminant such as vents, chimneys, plumbing vents, streets, alleys, parking lots and loading docks. When a source conta-
minant is located within 10 feet (3048mm) of an intake opening, such opening shall be located a minimum of 2 feet (610mm) below
the contaminant source.

IN ADDITION TO THESE CODES THE MANUFACTURER RECOMMENDS THAT:

• The X

CHANGE

R

TM

hood should be a minimum of 1 foot above grade or anticipated snow line.

• The X

CHANGE

R

TM

hood should be a minimum of 3 feet from an inside corner of the building.

3

TABLE 1

Summary of Contents for XCHANGER X2D

Page 1: ...rights reserved P N 8504164 THIS DEVICE MUST BE INSTALLED BY A QUALIFIED PERSON READ INSTRUCTIONS CAREFULLY PRIOR TO INSTALLATION AND OPERATION OF THE XCHANGER REV A 05 10 TJERNLUND PRODUCTS INC 1601 Ninth Street White Bear Lake MN 55110 6794 PHONE 800 255 4208 651 426 2993 FAX 651 426 9547 Visit our web site www tjernlund com ...

Page 2: ... SPECIFICATIONS GENERAL INFORMATION Each XCHANGERTM is electrically factory line tested before shipment After opening carton Inspect thoroughly for hidden damage INSTALLATION RESTRICTIONS WARNING Improper installation adjustment alterations service or maintenance can cause injury or property damage Refer to this manual For assistance or additional information consult a qualified installer service ...

Page 3: ...ENDED PATTERNS OF OPERATION The XCHANGERTM X2D model includes a dehumidistat control which can cycle the XCHANGERTM fan s automatically based on the rel ative humidity level of the house or it can be operated based on recommendations below It is generally recommended to maintain a Relative Humidity RH below 60 to inhibit mold growth A standard plug in wall timer can be programmed based on the life...

Page 4: ...Do not exhaust air from mechanical room unless makeup air is also supplied or equipment in mechanical room is sealed combustion Carbon monoxide poisoning may result Use the DT2 6 6 duct take off kit so exhaust can be removed from outside the mechanical room if necessary It is required that the XCHANGERTM be installed in a location where it will not be directed at the occupants Do not discharge int...

Page 5: ...g ensuring XCHANGERTM will be level 2 CAUTION When cutting or drilling into wall do not damage electrical wiring and other hidden utilities Using a 1 2 bit drill pilot holes noted on the template from inside through rim joist wall board siding etc keeping drill bit perpendicular to the wall 1 2 bit must be long enough to penetrate through exterior 3 Use a level to mark 4 holes drilled in step 2 an...

Page 6: ... see Diagram K 10 Insert plastic nut into XCHANGERTM base Assemble mounting bracket as shown See Diagram M Attach assembled bracket to bottom of XCHANGERTM Mark bracket mounting location on wall with a slight upward pitch in rear of XCHANGERTM and connect to wall using provided wall anchor See Diagram L 5 DIAGRAM F DIAGRAM E DIAGRAM G INSERT 6 PUSH CLIPS THROUGH EMBOSSED HOLES OF HOUSING CLIPS MUS...

Page 7: ...side outlets IMPORTANT Do not plug other devices into dehumidistat control or damage may result Once fans are installed in XCHANGERTM plug dehumidistat control into standard outlet The XCHANGERTM control module includes an adjustable dehumidistat control which activates the fan s if the relative humidity rises above the selected set point It is gener ally recommended to maintain a Relative Humidit...

Page 8: ... was taken from Credit or replacement will only be issued to a Tjernlund distributor after the defective part has been returned prepaid to Tjernlund WHAT IS NOT COVERED Product installed contrary to our installation instructions Product that has been altered neglected or misused Any freight charges related to the return of the defective part Any labor charges related to evaluating and replacing th...

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