4.0
Technical Data
4.1 A
D
IR
ISTRIBUTION
Applicable to all model numbers.
4.2 A
D
IR
ISTRIBUTION
Defrost Mode 1
Applicable to model numbers:
• HRV-150
• HRV-210
Defrost Mode 2
Applicable to model numbers:
• ERV-150
• ERV-210
For defrost cycles tables, refer to Section 9.0, Wiring Diagram.
(N
O
ORMAL
PERATION
STALE AIR
TO OUTSIDE
FRESH AIR
TO BUILDING
VF0013
(D
M
EFROST
ODE
FRESH AIR
TO BUILDING
VF0020
STALE AIR
TO OUTSIDE
FRESH AIR TO
BUILDING
VF0012
)
)
8
FRESH AIR
FROM
OUTSIDE
STALE AIR
FROM
BUILDING
STALE AIR
FROM
BUILDING
STALE AIR
FROM
BUILDING