Heat Controller A-VCH18DC-1 User Manual

23

Heat Controller, Inc. 

VMH SerieS

 

Installation Manual

Perform the electric safe check after 

completing installation:

1. Insulated resistance

    The insulated resistance must be more than 

    2M .

2. Grounding work 

    After finishing grounding work, measure the 

    grounding resistance by visual detection and 

    grounding resistance tester. Make sure the 

    grounding resistance is less than 4 . 

3. Electrical leakage check (performing during 

    test running)

    During test operation after finishing installation, 

    the serviceman can use the electroprobe and 

    multimeter to perform the electrical leakage 

    check. Turn off the unit immediately if leakage 

    happens. Check and find out the solution 

    ways till the unit operate properly.

A: Lo packed valve  B: Hi packed valve 

C and D are ends of indoor unit connection.

1. Soap water method:

     Apply a soap water or a liquid neutral 

    detergent on the indoor unit connection 

    or outdoor unit connections by a soft 

    brush to check for leakage of the 

    connecting points of th piping. If bubbles

    come out, the pipes have leakage.

2. Leak detector

Use the leak detector to check for leakage.

Indoor unit 

check point

Outdoor unit 

check point 

n m k

j i h

A

B

C

a

c

b

d

e

f

               a,b,c,d,h,i,j , k are points for  one-two type.

a,b,c,d,e,f,,h,i,j,k,m,n are points for one-three type.

Indoor unit 

check point

Outdoor unit 

check point 

               One-four type

Fig.63

Fig.64

NOTE: The illustration is for explanation 

purpose only. The actual order of  A, B, C

and D on the machine may be slightly 

different from the unit you purchased. The 

actual shape shall prevail.

NOTE: The illustration is for explanation

purposes only. The actual order of A, B, C

and D on the machine may be slightly

different from the unit you purchased. The

actual shape shall prevail.

Apply a soap water or a liquid neutral

detergent on the indoor unit connection

or outdoor unit connections with a soft

brush to check for leakage of the

connecting points of th piping. If bubbles

come out, the pipes have leakage.

test run).