Reznor RIHVL Unit Installation Manual - Manual (Page 8)

Be certain to check local codes for mounting requirements and permission to use flex-
ible gas connectors. Local codes may require rigid mounting. It is recommended that
either the piping or the mounting be flexible to prevent fatigue failure from vibration
and/or thermal expansion.
Heaters may be mounted with an angle of 5-30°. Do not angle heaters more than 30°.
Suspend the heater with the gas manifold located on the low end. (Exception: It is per-
missible to suspend single-burner Models RIHN30, RIHL50, and RIHN60 with the gas
valve on the high end; see FIGURE 3B.)
1. Securely attach long chains to overhead building structure
with "S" hooks (A) .
2. Attach the other end of the long chains to the back of the
heater with "S" hooks (B)
3. Attach one end of the 11" (279mm) length chains to the
front of the heater with S hooks (C) . Attach the other end
of the short chains to the long chains with "S" hooks (D) by
placing the "S" hooks (D) in a loop of the long chain.
4. Check degree of angle mounting. Adjust the mounting
angle by moving "S" hooks (D) of the short chains along
the length of the long chains..
5. Check to be sure unit is level. Crimp all "S" hooks closed
(A, B, C, and D) .
FIGURE 4 - Chain Hanging Instructions - Using either the
chains and "S" hooks in Option UE1, chain and "S" hooks
in Option UE2, or field-provided chain and "S" hooks
5.0 Suspending
the Unit
(cont'd)
3/8” (10mm) all-thread
rods for rigid mount
200# (91kg) working
load chain for chain mount
1/4” (6.3mm)
diameter “S” Hooks
Mounting Angle
(5 to 30°)
Gas Manifold
(horizontal along the
low side of the heater)
Gas Valve
FIGURE 3A - Rigid or
Chain Suspension
applies to all Sizes -
Heater must be level.
D
B
C
A
SIDE VIEW
Mounting Angle
11” (279mm)
with “S” hooks
FIGURE 3B - Optional
Mounting - applies
only to Sizes 30, 50,
and 60
A Gas Manifold
B Gas Valve
C Mounting Angle (5-30°)
Sizes 30, 50, and 60 ONLY have the option
of mounting with the gas manifold (A) angled
upward. ONLY in this case, the gas valve (B)
MUST be toward the high side.
For proper operation, the heater must be level.
If permissible by local code, it is recommended that the heaters be suspended with
chain and “S” hook mounting. Chain with 200# (91kg) working load (1/0 Tenso) is rec-
ommended. “S” hooks must be a minimum 1/4" (6.3mm) diameter wire and must be
closed after installation.
P/N 131793R10, Page 8