Munchkin Gas-Fired Hot Water Circulating Heater - Manual (Page 36)

35
GAS-FIRED HEATER
Installation Manual
Munchkin Contender Heater with optional VISION 1 system
Multiple high temperature priority loads
controlled with zone circulators
Multiple low temperature load controls with zone circulators Drawing 3G
NOTES:
1.
This drawing is meant to show system piping concept only.
Installer is responsible for all equipment & detailing required by local codes.
2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.
3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream & downstream of all closely spaced tees.
4. The minimum pipe size for connecting a Super Stor Ultra Indirect Water Heater is 1-inch.
5. The minimum pipe size for connecting the Munchkin Contender is 1.25-inch
6. Circulators are shown with isolation flanges and integral check valves. The alternative is standard flanges with full port ball valves
and a separate flow check valve. Purge valves can be used with the circulator flanges as an alternative.
7. Optional Vision 1 system includes temperature sensors for DHW and outdoor air and must be purchased separately.
8.
The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119˚F.
9. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
10. Winterization: When winterizing the Munchkin Contender, put a drain valve on both the supply and return between the union and
the shut-off connection.
anti-scald
mixing valve
OFF
closely spaced tees
purge
purge
purge
make-up water
OFF OFF OFF
zone
circulators
thermal trap
(w/ drain plug)
P1
P2
Super Stor Ultra
indirect DHW Tank
air handler
air handler
multi-zone
relay center
high temperature loads low temperature loads
outdoor
temperature
sensor
T/P
Munchkin
Contender
Heater
see note 6
(Vision 1 system)
optional high limit safety
DHW
tank
aquastat