Heat Controller VMH 36, VMH 27, VMH 18 Leak Check Safety and leakage check Electrical safety check

Heat Controller, Inc. INSTALLATION MANUAL VMH InverterFlex Mini-Split

Air Purging

and Leak Check
Safety and leakage check
Electrical safety check			n	m k j i h
Perform the electric safe check after
completing installation:
1. Insulated resistance		Indoor unit
The insulated resistance must be more than		check point
2M .			f
2. Grounding work	Outdoor unit	A	e
After finishing grounding work, measure the	check point	B	d
grounding resistance by visual detection and			c
		C	b
grounding resistance tester. Make sure the
			a
grounding resistance is less than 4 .
3. Electrical leakage check (performing during
test run).
During test operation after finishing installation,	a,b,c,d,h,i,j , k are points for one-two type.
the serviceman can use the electroprobe and	a,b,c,d,e,f,,h,i,j,k,m,n are points for one-three type.
multimeter to perform the electrical leakage
check. Turn off the unit immediately if leakage		Fig.63
happens. Check and find out the solution
ways till the unit operate properly.

RefrigerantGas leak checkLeak Check

1.Soap water method:

ApplyA plyaasoapsoapwaterwateror ora liquida liquidneutralneutral detergentetergentononthetheindoorindoorunitunitconnectionconnection ororoutdooroutd orunitunitconnectionsconnectionswithbya asoftsoft brushbrushtotocheckcheckforforleakageleakageof theof the connectingconnectingpointspointsof ofth thpipingpiping. If bubbles. If bubbles comecomeout,out,thethepipesipeshavehaveleakageleakage. .

2.Leak detector

Use the leak detector to check for leakage.

Indoor unit check point

Outdoor unit check point

CAUTION

A: Lo packed valve B: Hi packed valve

C and D are ends of indoor unit connection.

NOTENOTE:: TheTheillustrationillustrationis forisexplanationfor explanation purposespurposeonlyonly. The. Theactualactualorderorderof A, B,of CA, B, C and D on the machine may be slightly

and D on the machine may be slightly different from the unit you purchased. The different from the unit you purchased. The actual shape shall prevail.

actual shape shall prevail.

One-four type

Fig.64

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