The temperature of the water in the heater can be reg- ulated by using the Raypak Modulating Temperature Control. To comply with safety regulations, the control is set at 120°F when shipped from the factory (Mode 3 default setting for Tank Target).
To adjust the water temperature, follow the instruction for the operation of the control starting on page 30 of this manual. The control is shown below for identifica- tion purposes only. (See Fig. 5.)
Fig. 5: Modulating Temperature Control
CAUTION: Hotter water increases the risk of scalding! There is a hot water scald potential if the thermostat is set too high.
INSTALLATION
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
•For Canada only: CAN/CSA B149 Natural Gas and Propane Installation Code and CSA C22.1 C.E.C. Part 1 (C22.1)
Equipment Base
The heater should be mounted on a level, structurally sound surface. The heater is approved for installation on a combustibl e surface but must NEVER be installed on carpeting.
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 that a suitable catch pan, adequately drained, be installed under the appliance. The pan must not restrict air flow.
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
| Heater | Minimum Clearance | Minimum | |
| from Combustible | Service | ||
| Side | |||
| Surfaces | Clearance | ||
|
|
| ||
|
|
|
|
|
| Floor* |
| 0” | 0” |
|
|
|
|
|
| Rear |
| 12” | 24” |
|
|
|
|
|
| Right Side |
| 1” | 1” |
|
| |||
| Left Side |
| 1” | 1” |
|
|
|
|
|
| Top |
| 0” | 10” |
|
|
|
|
|
| Front |
| Open | 24” |
|
|
|
|
|
| Vent |
| 1” | 1” |
| *DO NOT install | on carpeting. |
| |
|
| |||
| Table C: Clearances – Indoor Installations | |||
When installed according to the listed minimum clear- ances from combustible construction, these heaters can still be serviced without removing permanent structural construction around the heater. However, for ease of servicing, a clearance of at least 24 in. in front, at least 24 in. on the rear and 10 in. above the top of the heater is required. This will allow the heater to be
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