Equipment Base

The heater should be mounted on a level, structurally
sound surface. The heater is approved for installation
on a combustible surface but must NEVER be
installed on carpeting. Gas-fueled equipment installed
in enclosed parking garages must be located at least
18 in. above the floor.
In addition, the heater shall be installed such that the
gas ignition system components are protected from
water (dripping, spraying, rain, etc.) during appliance
operation or service (circulator replacement, control
replacement, etc.).
If the heater needs to be secured to the ground, use
the brackets that were used to bolt the heater to the
shipping pallet.

Clearances

Indoor Installations

For ease of servicing, provide a minimum clearance of
at least 24 in. on the right side, 24 in. in front, at least
36 in. on the rear and 10 in. above the top of the
heater. This will allow the heater to be serviced in its
installed location without movement or removal of the
heater.
8
Heater
Side
Minimum Clearance
from Combustible
Surfaces
Minimum
Service
Clearance
Floor* 0” 0”
Rear 12” 36”
Right Side 1” 24”
Left Side 1” 1”
Top 0” 10”
Front Open 24”
Vent 1” 1”
TableC: Clearances – Indoor Installations
INSTALLATIONINSTALLATION

Installation Codes

Installations must follow these codes:
• Local, state, provincial, and national codes, laws,
regulations and ordinances
• National Fuel Gas Code, ANSI Z223.1/NFPA 54 –
latest edition (NFGC)
• National Electrical Code, ANSI/NFPA 70 - latest
edition (NEC)
• Standard for Controls and Safety Devices for
Automatically Fired Boilers, ANSI/ASME CSD-1,
(CSD-1) when required
• For Canada only: CAN/CSA B149 Natural Gas
and Propane Installation Code and CSA C22.1
C.E.C. Part 1 (C22.1)
The temperature of the water in the heater can be reg-
ulated by using the Raypak Modulating Temperature
Control. Tocomply with safety regulations, the control
is set at 120°F when shipped from the factory (Mode 3
default setting for TankTarget).
Toadjust the water temperature, follow the instruction
for the operation of the control starting on page 33 of
this manual. Thecontrol is shown below for identifica-
tion purposes only.(See Fig. 4.)
CAUTION: Hotter water increases the risk of
scalding! There is a hot water scald potential if the
thermostat is set too high.
Fig. 4: Modulating TemperatureControl
*DONOT install oncarpeting.
CAUTION: This heater should be located in an
area where water leakage will not result in damage
to the area adjacent to the appliances or to the
structure. When such locations cannot be avoided, it
is recommended t hat a suitable cat ch pan,
adequately dra ined, be install ed under the
appliance. The pan must not restrict air flow.