EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- info@ewccontrols.com
11
NOTES:
Remember that the drawings included in this bulletin are general in
nature. Your actual field wiring may vary.
Contact EWC Controls if you are unsure as to the proper wiring for
your application.
DO NOT connect these control panels or damper motor actuators to
voltages higher than 30vac. Doing so will void all warranties.
DO NOT install or place a Fresh air intake, close to or adjacent to ANY
type of exhaust system discharge. Consult National & Local building
mechanical codes and ordinances.
Page 12 has a 2 stage Heat/Cool diagram showing a
required
Field
Lockout relay for the “Y2” circuit. The “W1” circuit travels straight
thru the HK2000, so “W2” can also be wired straight across.
TESTING DAMPER MOTORS
RDN / SMDL / BMDL Dampers - Connect 24vac common to terminal 1 and 24vac hot to terminals 2 and 4. Damper
should Open. Remove 24vac hot from terminal 4. Damper should Close.
BMD / SMD / ND / URD Dampers - Connect 24vac common to terminal 1 and 24vac hot to terminal 4. Damper should
Open. Remove 24vac hot from terminal 4 and apply to terminal 6. Damper should Close.
SR / ESR Power Close / Spring Open Dampers - Connect 24vac common & hot to the two motor (M) terminals.
Damper should Close. Remove 24 vac hot. Damper should Open.
SR / ESR Power Open / Spring Close Damper - Connect 24vac common & hot to the two motor (M) terminals. Damper
should Open. Remove 24vac hot. Damper should Close.
TESTING THERMOSTATS
During a demand for heating, the thermostat should apply a 24vac hot signal to the W terminal.
During a demand for cooling, the thermostat should apply a 24vac hot signal to the Y and G terminals.
During a continuous fan demand, the thermostat should apply a 24vac hot signal to the G terminal.
Check to make sure that the thermostat Rc and Rh terminals are connected together, unless your application requires
separation of these circuits.