Heat Link 31360, Manual

Page: 32 / 44

HeatLink
®
Mixing Valve Reset Control Stk# 31360
®
Link Heat
www.heatlinkgroup.com
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TECH 5.4
6 Circuit (Mod. Fl. Ht. & Snowmelt. plus Additional Htg. Components)
Application: 4-Way Mixing
Cast iron high mass boiler and 6 circuits
(two low temp. circuit - fully automatic modulating water temp. for floor heating and snow melting)
(four high temp. circuits; snowmelt & pool/hot tub heat exchangers, fan coil, and indirect fired hot water heater)
Note:
• Air vents, expansion tanks, pressure relief valves etc. For boiler as per local codes.
• Drawings are for HeatLink
®
suggested system layout only. User must determine if system layout will work for their particular application!
• Use isolation ball valves for all circuits and components.
Control Sequence:
• Indoor/outdoor plus snowmelt control units provide the correct water temperature for the HeatLink ® radiant floor heating and snowmelting sys -
tems. By correlating outside air temperature, secondary supply & return water temp., primary return water temp. & room temp. the control units
then activate their respective 4-way mixing valve motors which in turn modulates the supply water temperature to the floors/slabs. (See ELECT
1.8 - 1.9 & 1.12-1.13 for wiring specifications). Secondary floor heating control is provided by individual room thermostats operating zone drive
motors. For the forced air system the zone thermostat will open the zone valve and in turn activate the fan coil.
• Boiler to fire either: 1) Independently on its own operating controls or 2) By activation through a relay of the controllers. APPLICATION TO USE
OPTION (____).
• Primary pumps (P-4 & P-5) to be wired through a relay in series with the thermostats or aquastats of the fan coil, heat exchanger or indirect fired hot
water heater and their respective zone valves. Zone valves to be controlled by an aquastat or zone thermostat. Snowmelt heat exchanger primary
pump (P-2) to be controlled by a relay of the snowmelt controller. (See ELECT 5.4a & ELECT 5.4b)
• All Pumps to be wired with their own disconnect switches. System pumps P-1 and P-2 to operate either: 1) Continually or 2) By activation through
a relay of their respective controllers (See ELECT 5.4a and ELECT 5.4b)
FOR THIS PARTICULAR APPLICATION P-1 & P-2 TO OPERATE AS PER OPTION (_____).
Heat
Exchanger
Note: • To maintain proper flow through boiler, piping MUST be completed as shown. ie.
IFHWH supply & return connections to be tied in BEFORE the mixing valve!
• Thermal traps must be used to prevent uncontrolled heat-up from hot water migration.
(drop piping a minimum of 16")
1/2" Water Make Up
Back
Flow
Preventer
Expansion
Tank
High
Limit
Aquastat
Boiler
P-5
P-4
Zone Valve
+ Motor
Zone Thermostat
for fancoil
Fan Coil
1
P-3
Return/Supply tie-in to
be maximum 4 pipe
diameters apart (see
notes below)
Third Party
full port
zone valve
Drain
Cock
Manifold 2
Snow/Ice Melting
Snow Melt
Controller
Outdoor
Sensor
P-2
Zone Valve
+ Motor
Heat
Exchanger
IF Aquastat
IFHWH
Expansion
Tank
P-1
Manifold 1
Floor Heating
(Optional pressure activated
bypass valve required if
multiple thermostats and zone
motors are used)
Indoor/Outdoor
Controller
Sidestream
Filter
Sidestream
Filter