The Best
Limited Warranty
in the Business
• The energy recovery enthalpic core has a
limited 5 year warranty.
• The motors found in all Robertshaw ERV's
require no lubrication, and are factory
balanced to prevent vibration and promote
silent operation.
• The limited warranty covers normal use. It
does not apply to any defects,
malfunctions or failures as a result of
improper installation, abuse, mishandling,
misapplication, fortuitous occurrence or
any other circumstances outside
Robertshaw's control.
• Inappropriate installation or
maintenance may result in the
cancellation of the warranty.
• Any unauthorized work will result in
the cancellation of the warranty.
• Robertshaw is not responsible for any
incidental or consequential damages
incurred in the use of the ventilation
system.
• Robertshaw is not responsible for
providing an authorized service centre
near the purchaser or in the general area.
• Robertshaw reserves the right to supply
refurbished parts as replacements.
• Transportation, removal and installation
fees are the responsibility of the purchaser.
• The purchaser is responsible for
observing all codes in effect in his area.
• The warranty is limited to 5 years on parts
and 7 years on the motor from the date of
purchase, including parts replaced during
this time period. If there is no proof of
purchase available, the date associated
with the serial number will be used for the
beginning of the warranty period.
* This warranty is the exclusive and only
warranty in effect relative to the ventilation
system and all other warranties either
expressed or implied are invalid.
***Illustrations & images in this
manual may not be exactly like unit
purchased, these illustrations &
images are for examples only.***
2
TABLE OF CONTENTS
TECHNICAL DATA
7604-003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
7604-004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Modes Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Location & Ducting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Air Flow Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Sizing (Example) for maximum airflow normally required.
ERVs are typically sized to ventilate the whole house at a minimum of 0.35 air changes per
hour. To calculate, simply take the square footage of the house (including basement) and mul-
tiply by the height of the ceiling to get cubic volume. Then, divide by 60 and multiply by 0.35.
Example:
Maximum airflow required (CFM)
* Always consult your local code for sizing requirements in your area.
Sq Ft of House
1100
Basement
1100
Total Sq Ft
2200
Height of ceiling
x 8
Cubic volume
17600
/ 60
x 0.35
(if applicable)
293
103