For Installations On The Commonwealth Of Massachusetts; Csd-1 Field Testing Of High Limit Switches - Viessmann Vitodens 200-W B2HA 80 Installation Instructions Manual

Vitodens 200-W B2HA 80, 88, 100 Installation
Important Regulatory and Installation Requirements
For installations on the Commonwealth of Massachusetts, the following modifications to NFPA-54 chapter 10 apply:
Excerpt from 248 CMR 5-08:
2(a) For all side-wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in
part for residential purposes, including those owned or operated by the Commonwealth and where the sidewall exhaust vent
termination is less than (7) feet above finished grade in the area of the venting, including but not limited to decks and
porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side-wall horizontal vented gas
fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an
alarm and battery back-up is installed on the floor level where the gas equipment is to be installed. In addition, the
installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an
alarm is installed on each additional level of the dwelling, building or structure served by the side-wall horizontal vented
gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed
professional for the installation of hard-wired carbon monoxide detectors.
a. In the event that the side-wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the
hard-wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner
shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty
(30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above
provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum
height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled
heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, "GAS VENT
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".
4. INSPECTION. The state or local gas inspector of the side-wall horizontally vented gas fueled equipment shall not approve
the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in
accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a) 1 through 4:
1. The equipment listed in Chapter 10 entitled "Equipment Not Required To Be Vented" in the most current edition
of NFPA 54 as adopted by the Board; and
2. Product Approved side-wall horizontally vented gas fueled equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for residential purposes.
CSD-1 Field Testing of High Limit Switches for Vitodens boilers – where required by law.
As per ASME Boiler and Pressure Vessel Code, section IV, subsection HG-613 TEMPERATURE CONTROL requirements, Vitodens
200-W hot water boilers are protected from over-temperature by two temperature-operated controls. These temperature control
devices conform to Standards for Limit Controls, and are accepted by CSA, a nationally recognized testing agency. Each boiler
is equipped with a manual reset high temperature limit control and a temperature control that will cut off fuel supply when the
system water temperature reaches a preset operating temperature. VIESSMANN IS NOT RESPONSIBLE FOR ANY DAMAGES
THAT THE FOLLOWING TEST PROCEDURE MAY RESULT IN BY OVERHEATING THE SYSTEM.
The Vitodens 200 boilers are equipped with flow switches or sensors that when activated enable the burner to operate.
The fixed high limit, when tripped, produces a fault that will require manual reset of the boiler control.
Fixed High Limit fault simulation #1:
- Ensure that the boiler and boiler pump are in normal operating condition (pump output sÖ is the boiler pump).
- Remove the cover from the back of the boiler control allowing access to the boiler control plugs.
- Under the extended menu (in the Operating manual), select 'Test mode' then 'flue gas test ON' and press 'OK'.
- The boiler/burner will start a firing cycle and will gradually go into high fire mode.
- Once the burner ignites, disconnect the boiler pump plug sÖ from the boiler control board (gently with pliers).
Note: For boiler models equipped with flow switches (only boiler sizes 19 to 100), it may be required that flow switches be
jumpered during testing.
- Observe the boiler temperature on the control display.
- The temperature will gradually rise as more heat is put into the boiler heat exchanger. The burner will then shut off.
- The boiler temperature should continue to rise and once it reaches 210ºF (99ºC) the manual reset high limit safety switch
will trip electronically generating an F2 fault.
- Should the limit temperature not be reached during the test, repeat the test with the following additional step;
- two minutes after the burner shuts off, energize the boiler pump for a maximum of 1 second (by plugging in boiler pump plug sÖ).
Fixed High Limit fault simulation #2:
- Close the boiler valve and jumper across the flow switch.
- Run the boiler at high fire and it will shut down by the coding card (in B2TB models, set coding address 06 to maximum) but
should continue to steady increase the boiler temperature until the fixed high limit is tripped.
- Once the fixed high limit is tripped, slowly open the boiler valve to safely cool the boiler down.
General Information
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