Water Heater User Manual
34  VA Series Indoor LS Manual 
 High Altitude Installations    
0-2000 ft 
(0-610 m) 
2001-5200 ft 
(610-1585 m) 
5201-7700 ft 
(1585-2347 m) 
7701-10200 ft 
(2347-3109 m) 
Switch No. 2  OFF  OFF  ON  ON 
Switch No. 3  OFF  ON  OFF  ON 
Set dip 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. 
 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 Water Heaters:  Accessories Necessary: 
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. 
 WARNING 
DO NOT adjust the other dip 
switches unless specifically 
instructed to do so. 
Switch No.
F
O
F
8
5
7
6
4
3
ON
1
2
Switch No.
F
O
F
8
5
7
6
4
3
ON
1
2
Switch No.
F
O
F
8
5
7
6
4
3
ON
1
2
Switch No.
F
O
F
8
5
7
6
4
3
ON
1
2










