Rinnai RV53I, RV53E Connecting Multiple Water Heaters, High Altitude Installations, Guidelines

Connecting Multiple Water Heaters

The RV53i can use the EZConnect™ cable which is an optional accessory that connects 2 water heaters and allows them to function as one hot water source.

The RV53i can use the MSA-2M and MSA-2S packs which are optional accessories that connect 2 to 5 water heaters and allow them to function as one hot water source.

The RV53e cannot use the EZConnect, MSA-2MB, and MSA-2S. The RV53e can use Rinnai pressure activation valves (PVA’s) can be used to manifold 2 to 5 Rinnai water heaters in order to produce a stable water temperature and allow the water heaters to run efficiently. Water heaters will turn on as necessary to meet the demand for hot water.

Refer to the instructions that come with the accessory for complete installation information.

Guidelines

Number of
Connected	Accessories Necessary:
Water Heaters:

2(1) EZConnect™ Cable or (1) MSA-2M

3(1) MSA-2M and (1) MSA-2S

4(1) MSA-2M and (2) MSA-2S

5(1) MSA-2M and (3) MSA-2S

•Do not install both the EZConnect™ and the MSA packs because they are not designed to operate together.

•Water heaters connected with the EZConnect™ Cable or the MSA-2M and MSA-2S packs cannot be used for the bath fill function.

•Water heaters should be installed less than 18 inches apart so that the cables will reach between units and to prevent temperature fluctuations (cold water sandwich effect) when the water is shut off and turned back on.

•Temperature settings can only be changed on the controller for the primary unit. (This changes the temperature on all units within the MSA or EZConnect™ system.)

High Altitude Installations

Set switches 2 and 3 to the values shown in table below for your altitude. The default setting for the appliance is 0-2000 ft (0-610 m) with switches No. 2 and No. 3 in the OFF position.

	0-2000 ft				2001-5200 ft					5201-7700 ft					7701-10200 ft
	(0-610 m)				(610-1585 m)					(1585-2347 m)					(2347-3109 m)
Switch No. 2		OFF					OFF					ON						ON
Switch No. 3		OFF					ON					OFF						ON
	Switch No.				Switch No.				Switch No.				Switch No.
			ON					ON					ON						ON
	O					O					O					O
				1					1					1						1
	F			2		F			2		F			2		F				2
	F					F					F					F
				3					3					3						3
				4					4					4						4
				5					5					5						5
				6					6					6						6
				7					7					7						7
				8					8					8						8
	RV53i & RV53e Operation and Installation Manual																29