KMC Controls VEP–3420 Series, VEP–3421 Series Installation Manual

3/4" & 1" 3-Way Diverting Electronic Control Valves

Installation Guide

Required Tools

• digital voltmeter

• small screwdriver

• 2 wrenches

Mounting

Valves are sized to meet the system demand and may
be smaller than the supply lines.

1. Clean the lines upstream from the valve. Remove
any debris > .06" (.15 mm)

2. Install as close as possible to the coil in a vertical
position (actuator over the valve).

VEP–3420, 3421 Series

CAUTION: Mount valve with the actuator in the
upright position, or at most a 45° angle, to prevent
condensation collecting in the actuator housing.

3. Align system flow with arrow on valve.

4. The MPT unions are not provided and must be
ordered separately.

3/4" valves Order: Three HMO–5026s

1" valves Order: Three HMO–5027s

5. Seal valves with approved valve sealant

6. Allow a minimum clearance of 1-1/2 " (38mm)
between the top of the actuator and the nearest
obstruction. Allow sufficient side clearance for
servicing the valve.

NOTE: Models do not include
HMO–5026/5027 MPT unions as
shown. Order separately.

DIMENSION REFERENCE

ABCD

3/4" MPT 3 13/16" (97) 2 3/4" (70) 5 1/8" (130)

1" MPT 4 1/16" (103) 3 1/8" (79) 5 7/8" (149)

Wiring

Valves may be connected with 3/8" flexible conduit using a HMO–4530 adaptor (not included).
The VEP–3420/33421 series come with a 2 conductor, 18 AWG, heat resistant cable. The actuators are wired

for normally closed condition.

• Blue - neutral

• Brown - hot

Maintenance

No routine maintenance is required. Each component is designed for dependable, long term reliability and
performance. Careful installation will ensure long term performance. Limit field repairs to replacement of
the complete bonnet assembly or valve disc.

VEP VALVE

TOP

HMO-4530

ADAPTER FOR

3/8" FLEXIBLE

CONDUIT

KMC Controls

P.O. Box 497

19476 Industrial Drive

New Paris, IN 46553

U.S.A.

TEL: [phone]

FAX: [phone]

E-mail: [e-mail]

063-019-01C