Slant/Fin DHWG - Manual (Page 4)

4
DHWG Domestic Hot Water Generator
DOMESTIC HOT WATER GENERATOR
DHWG
Figure 3. Water piping from boiler to DHWG system (Bobcat B-120A shown)
Water Piping:
1. Make all piping connections to and from the DHWG system
as shown in Figure 3.
2. Isolation valves and unions are recommended on all
piping connections to the DHWG system, to facilitate any
possible service needs. Use full port valves to insure
proper water flow through the system.
3. The piping to and from the boiler should be kept as short
as possible, with a minimum number of restrictions, such
as elbows. The diameter of the piping must not be
reduced from the DHWG system’s provided connection size.
4. The piping for the domestic water in and out should be
adequately sized for the desired flow rates at each
fixture. The distance to each fixture should be considered,
for the response rate of adequate hot water to each.
5. Refer to the boiler manual “Water Piping” section, for
proper installation of the space heating system and all
other piping.
CAUTION: A tempering valve is recommended to be installed
on the hot water outlet to all fixtures where direct user contact
can be made with the water supplied by the DHWG system to
prevent any possible scalding conditions. See Figure 3 for the
appropriate installation method of this device (not supplied with
the DHWG system).