Vitorond 200, VD2A Series Installation
5354 788 - 03
22
Connections
Water Side Connections
Legend
A
Fill and drain sediment faucet, ¾ in.
B
Boiler return rubberized flange gasket
C
Boiler fill and drain extension 1 in. nipple
BS Boiler supply
BR Boiler Return
The Vitorond 200, VD2A boiler is only for use in forced
circulation hot water heating systems.
1. Thoroughly rinse heating system (particularly when
retrofitting the Vitorond 200, VD2A to an existing
heating system).
2. Install supply and return headers (see following page).
Make all heating system connections.
Installation of a spring-loaded flow check valve, immediately
downstream of the circulation pump in the heating circuit
supply as a mechanical “break”, is recommended to prevent
water from flowing unintentionally to (space) heating
circuits during DHW priority or summer operation (when
only DHW is produced).
WARNING
Do not install an isolation valve between boiler and
safety header. Discharge pipe must be oriented
to prevent scalding of attendants.
IMPORTANT
Removal of air from system water must occur via use
of air vent(s). To ensure the boiler can be purged of all air,
ensure supply/return water lines do not contain restrictive
piping where air could be trapped.
IMPORTANT
Ensure all requirements detailed in the Vitorond 200,
VD2A System Design Guidelines and/or Technical Data
Manual are met.
3. Install safety piping.
IMPORTANT
The VD2A boiler has a 1 in. wash out opening
C
, as per
ASME code requirements, which is connected to a ¾ in.
fill / drain faucet
A
using a 1 in. x ¾ in. reducing coupling.
If a full port 1 in. drain connection is required by local
codes, then install a 1 in. field supplied tee at
C
above.
Boiler Supply Header
Boiler Supply Header
Parts
033 Gasket
038 Gasket, 60 x 116 x 3 mm
351 Gasket, DN40 PN6
400 Installation fittings assembly
401 Pressure gage, 0-160 psi 2.5
402 Pressure relief valve
404 Low water cutoff
405 Thermometer
406 Air vent,
e
in.
408 Flange DN2631 PN6 > 2½ in. NPT
409 Plug, ¾ in. BSPT BMI
* Some components may not be exactly as illustrated.
Other Parts (not illustrated)
350 Gasket, 41 x 56 x 2 mm
403 Loctite 55 pipe sealing cord, 39 ft. (12 m)
