Rinnai RL94I, RL75I Connecting Multiple Water Heaters, High Altitude Installations, Guidelines

Connecting Multiple Water Heaters

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

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

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

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

Guidelines

•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.)

Activation Options for EZConnect™

One unit in standby allows for quicker activation time with flow rates within the capacity of a single unit.

Two units in standby allows for quicker delivery temperature for flow rates requiring both units.

Applicable for the RL75 and RL94 models only.

Model	Number of units	Position of switch No. 5 in
	in standby	bank of 6 switches
RL75,	1	ON
RL94	2	OFF (default)

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
34					VB Series Indoor LS Manual