25
Installation of the DHVC Ventilation Control with 20/40/60 Minute Timers (test c)
1
2
3
4
5
6
7
8
9
10
LO
ON
R
Y
G
HI
C
NO
NC
BK
FACTORY-INSTALLEDJUMPER
FORSTANDBY-OFF OPERATION.
SEE“SETTING STANDBY”SECTION
OFINSTALLATIONINSTRUCTIONS
LO
HI
24C
RCWYGRYWG
THERMOSTAT
FURNACEOR
HEATPUMP
HRV/ERVWIRINGTERMINALS
12V/24VACField wir ing, 20 AWGmin. required
* Connect V Terminalon the HHSC Control to the Hi Terminal (instead of Lo) for a shorter ventilation period.
** One DH-1 Dehumidistat and/or one or more VTC timer controls may be connected as shown.Connect all
Red,Yellow,and Green control terminals to the corresponding HRV/ERV terminals.
RYG
Y
R
G
Y
R
G
VTCVENTTIMER CONTROL
(OPTIONAL)**
VTCVENTTIMER CONTROL
(OPTIONAL)**
DHVC VENTILATION
CONTROL
NOTE:Theseconnections are not necessar y
ifthe system is configured as fully
dedicated(no central HVAC connections).
%
80
20
HIGH