NTI INSTALLATION MANUALS

Part 3 - Prepare the Boiler for Installation

NOTE: A combustible door or removable panel is acceptable front clearance.

CAUTION All boilers eventually leak. Locate the boiler where any leakage from the relief valve, related piping, tank, or connections will not result in damage to surrounding areas or lower oors of the building. Any boiler should be installed in such a manner that if it should leak the resulting ow of water will not cause damage to the area in which it is installed. If the boiler is installed in a location where a leak could cause damage, it is required to provide containment measures. Such measures include but are not limited to: a properly sized drain pan installed beneath the boiler and piped to an open drain line, or installing the boiler on a concrete oor pitched to a free owing drain. Failure to provide containment measures is the sole responsibility of the owner and/or installer. Leakage damages ARE NOT covered by warranty. In addition, water leak detection devices and automatic water shuto valves are readily available at plumbing supply houses. IT IS HIGHLY RECOMMENDED BY THE MANUFACTURER TO INSTALL WATER LEAK DETECTION DEVICES AND AUTOMATIC SHUTOFF VALVES IN ANY BOILER INSTALLATION WHERE A LEAKAGE OF WATER COULD RESULT IN PROPERTY DAMAGES. NOTE: For closet installations, a combustible door or removable panel is acceptable front clearance. A 3” minimum clearance must be provided from the appliance front cover to the removable panel or combustible door. Minimum Clearances from Combustible Materials • Hot water pipes - at least 1” from combustible materials • Exhaust vent pipe - at least 1” from combustible materials Boiler Area Ventilation Air Openings - Closet Installations If the boiler is installed in a closet or alcove the boiler area/room must be ventilated. EXCEPTION: If the boiler area/room has a volume of 150 ft 3 or greater, ventilation of the boiler area/room is not required. Each ventilation air opening must meet the minimum requirements of 1 in 2 per 1000 BTU/hr., but not less than 100 in 2 . The lower ventilation opening must be located within 6 in. of the oor, while the upper opening must be located 6 in. from the top of the space. The space must be provided with correctly sized combustion/ ventilation air openings for all other appliances located in the space with the boiler. For power venting installations using room air for combustion, refer to the boiler venting section, this manual, for descriptions of con ned and uncon ned spaces. Do not install the boiler in an attic. The boiler cover must be securely fastened to prevent the boiler from drawing air from the boiler room. This is particularly important if the boiler is in a room with other appliances. Failure to comply with the above warnings could result in substantial property damage, severe personal injury, or death. If the boiler area has a volume less than 150 ft3, it is considered a Closet or Alcove. In the US/Canada, PVC vent pipe and ttings SHALL NOT BE USED within the closet or alcove. Only approved CPVC, Polypropylene, or Stainless Steel vent pipe and ttings may be used. See Table 12 for a list of approved materials. Under all circumstances proper ventilation must be provided. Alcove Installations Alcove installations have the same minimum dimensions as closet installations, except the installation must be completely open to the room at a distance no greater than 18 in. (457 mm) from the front of the boiler and the room must be at least three (3) times the size of the alcove. Provided these conditions are met, the boiler requires no extra ventilation air openings to the space. If these conditions are not met, follow the requirements for Closet Installations. WARNING

B. Leveling

CAUTION

The boiler must be installed level for the condensate to properly ow out of the collection system. Failure to do so will result in improper appliance operation.

Correct installation Incorrect installation

Figure 4 - Proper levelling

C. Clearances for Service Access

NOTE: If you do not provide the minimum clearances shown in Figure 5 and Table 6 it might not be possible to service the boiler without removing it from the space.

A

B

B

C

D

Figure 5 - Minimum Clearances

Dimension

Description

Clearance

A

Top

14” (355.6 mm)

B

Right or Left Side

2” (50.8 mm)

C

Front

18” (457.2 mm)

D

Bottom

12” (304.8 mm)

Not Displayed

Back

0” (0 mm)

Table 6 - Minimum Installation and Service Clearances

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