Direct Vent Tankless Water Heater - Alpine Home Air Products

Connecting Multiple Water HeatersThe EZConnect cable is an optional accessorythat connects 2 water heaters and allows them tofunction as one hot water source.The MSA-2M and MSA-2S packs are optionalaccessories that connect 2 to 5 water heatersand allow them to function as one hot watersource.Refer to the instructions that come with theaccessory for complete installation information.Number ofConnectedAccessories Necessary:Water Heaters:2 (1) EZConnect Cable or (1) MSA-2M3 (1) MSA-2M and (1) MSA-2S4 (1) MSA-2M and (2) MSA-2S5 (1) MSA-2M and (3) MSA-2SGuidelines• Do not install both the EZConnect and theMSA packs because they are not designed tooperate together.• Water heaters connected with theEZConnect Cable or the MSA-2M and MSA-2S packs cannot be used for the bath fillfunction.• Water heaters should be installed less than 18inches apart so that the cables will reachbetween units and to prevent temperaturefluctuations (cold water sandwich effect) whenthe water is shut off and turned back on.• Temperature settings can only be changed onthe controller for the primary unit. (Thischanges the temperature on all units within theMSA or EZConnect system.)Activation Options for EZConnectOne unit in standby allows for quicker activation time withflow rates within the capacity of a single unit.Two units in standby allows for quicker delivery temperaturefor flow rates requiring both units.Applicable for the R75LS and R94LS models only.ModelR75LS,R94LSNumber of unitsin standbyPosition of switch No. 5 inbank of 6 switches1 ON2 OFF (default)High Altitude InstallationsSet switches 2 and 3 to the values shown in tablebelow for your altitude. The default setting for theappliance is 0-2000 ft (0-610 m) with switches No. 2and No. 3 in the OFF position.WARNINGDO NOT adjust the otherswitches unless specificallyinstructed to do so.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 ONSwitch No. 3 OFF ON OFF ONSwitch No.Switch No.Switch No.Switch No.OFFON12345678OFFON12345678OFFON12345678OFFON12345678VB Series Indoor LS Manual 35