Installation Sheet

6 Rinnai Rack Installation
SpecificaƟons
Description
(2, 3, 4) RU98
Wall Mount
(4/4, 3/4, 2/4)
RU98
Free Stand (b)
(6/6, 5/6, 3/6)
RU98
Free Stand (b)
Top Level Part No.
RW2, RW3,
RW4
RS4-4, RS4-3,
RS4-2
RS6-6, RS6-5,
RS6-3
Rack Frame - Specifications RW2, RW3, RW4 RF4 RF6
Frame Rail Type
Sheet Metal Sheet Metal Sheet Metal
Frame Material 0.090 5052-H32 0.090 5052-H32 0.090 5052-H32
Frame Finish Powder Coat Powder Coat Powder Coat
Color Gray Gray Gray
Water & Gas Connections
Hot Water Trunk Line Diameter 2" 2" 2-1/2"
Cold Water Trunk Line Diameter 2" 2" 2-1/2"
Hot Water Trunk Line Material Rigid Copper Rigid Copper Rigid Copper
Cold Water Trunk Line Material Rigid Copper Rigid Copper Rigid Copper
Water Trunk Connection Type 2" MNPT 2" MNPT 2-1/2" MNPT
Water Header End Cap (field supplied) 2” FNPT 2” FNPT 2-1/2” FNPT
Hot Water Branch Line Diameter 3/4" 3/4" 3/4"
Cold Water Branch Line Diameter 3/4" 3/4" 3/4"
Hot Water Branch Line Material
CSST CSST CSST
Cold Water Branch Line Material
CSST CSST CSST
Gas Trunk Line Diameter 1-1/4" NPT 1-1/4" NPT 1-1/2" NPT
Gas Trunk Connection Type 1-1/4” MNPT 1-1/4” MNPT 1-1/2” MNPT
Gas Header End Cap (field supplied) 1-1/4” FNPT 1-1/4” FNPT 1-1/2” FNPT
Gas Trunk Line Material Sch 40 Steel Sch 40 Steel Sch 40 Steel
Gas Branch Line Diameter 3/4" 3/4" 3/4"
Gas Branch Line Material
PVC Over CSST PVC Over CSST PVC Over CSST
Gas Trunk Line Finish
Powder Coat Powder Coat Powder Coat
UniStrut Size
1-5/8" x 13/16" 1-5/8" x 1-5/8" 1-5/8" x 1-3/8"
UniStrut Material
14ga Steel / Zn 12ga S/S 12ga S/S
Hardware Material/Finish
Steel / Zn S/S 18-8 S/S 18-8
Electrical Requirements
Each water heater requires 120 VAC, 60 Hz power
source in a properly grounded circuit.
RU98i: 64 W normal operation; 2 W standby; 146 W
anti-frost protection.
RU98e: 63 W normal operation; 2 W standby; 168 W
anti-frost protection.
2 RU98 3 RU98 4 RU98 6 RU98
Flow rate @ 70°F rise (gpm) 10.8 16.2 21.6 32.4
Flow rate @ 100°F rise (gpm) 7.6 11.4 15.2 22.8
Maximum input rate (Btuh) 398,000 597,000 796,000 1,194,000
BTU and Flow Rates for Common Vented RU98i/e (NG/LP)
5 RU98
27.0
19.0
995,000