Carrier 42GW installation manual Water connections, Installation of grille/frame assembly

42 GW

Installation

Frame pre-hooking support
Safety belt
Frame fixing screw
		A. Gasket	"A"
		B. Gasket	"B"
	A	B
		Air discharge
Installation of grille/frame assembly	Ensure that the frame is not distorted by excessive tightening,
	that it is aligned with the false ceiling and above all that there is
	a seal between the air inlet and outlet.
Carefully unpack the assembly and check for damage sustained in	In the drawing gasket "A" prevents return air from mixing with
	the supply air and gasket "B" prevents the supply air from
transit. Attach the assembly to the unit by using the two hooks.	leaking into the ceiling void.
Use the screws supplied to fix the frame in position.	On completion, the gap between the unit frame and the false
	ceiling must not be more than 5 mm.

Water connections

Water connections are fixed to the unit body to avoid damage when pipes are connected; it is advisable to tighten the connection with a spanner.

The upper coil connection is supplied with an air purge valve, the lower connection with a water purge valve, suitable for a 10 mm wrench or screw-driver.

(The coil is only partially drainable; it it is advisable to blow air into the coil for complete drainage).

Models	Connections		Models	Connections
	dimension (Ø)			dimension (Ø)
004	3/4"	012		1"
008	3/4"	016		1"
010	3/4"	020		1"
004*	1/2"		020*	3/4"
010 *	1/2"		* Hot water circuits, four-pipe version

It is necessary, when the installation is made, to insulate the valve and the connection pipes with anti-condensate material of polyethylene type or expanded neoprene.

Checking

Before unit operation pour a quantity of water into the external auxiliary drain pan. Verify that the water flows into the internal condensate drain pan and that the pump regularly drains the liquid.

Otherwise check the pipe slope and look for possible obstructions. Water connections are fixed to the unit body to avoid damage when pipes are connected; it is advisable to tighten the connection with a spanner.

Water inlet Water outlet Air purge valve Water purge valve

GB - 8