Heat Link 31360, Manual

Page: 24 / 44

HeatLink
®
Mixing Valve Reset Control Stk# 31360
®
Link Heat
www.heatlinkgroup.com
H
e
a
tL
in
k
24
TECH 5.1
1 Circuit (Fully Modulating Floor Heating)
Application: 4-Way Mixing
Cast iron high mass boiler c/w 3 circuits
(one low temp. circuit - fully automatic modulating water temp for floor heating.)
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 control unit provides primary control for the HeatLink
®
radiant floor system. By correlating outside air temperature, supply wa -
ter temp. & (optional) room temperature the control unit then activates the 4-way mixing valve motor which in turn modulates the supply water
temperature to the floor. Secondary floor heating control is provided by individual room thermostats operating zone drive motors. For the forced
air system the zone thermostats will open their respective zone valve and in turn activate the fan coil. (See ELECT 1.2 & 1.3) (For rough-in wiring
instructions using StatLink ® controls see ELECT 1.8 & 1.9)
• Boiler to fire either: 1) Independently on its own operating controls or 2) By activation through a relay of the indoor/outdoor controls. APPLICATION
TO USE OPTION (____).
• Primary pump (P-2) to be wired through a relay in series with the thermostats of the fan coil as well as the indoor/outdoor controller. (Some boilers
may have an internal relay which can be used to bring on primary pump on call for heat.) (see ELECT 5.3a & ELECT 5.3b)
• Pumps (P-1, P-2, P-3) to be wired directly with their own disconnect switches. System pumps P-1 & P-3 to operate either:
1) Continually or 2) By activation through a relay of the indoor/outdoor plus StatLink
®
controls (see ELECT 5.3a & ELECT 5.3b).
FOR THIS PARTICULAR APPLICATION P-1 AND P-3 TO OPERATE AS PER OPTION (_____).
P-1
Temperature
Gauge
Supply
Sensor
4 Way Mixing Valve
Mixing Valve Motor
Indoor/Outdoor
Controller
Outdoor
Sensor
(Note: The manifold at the highest location
should be equipped with an air vent)
(Optional pressure activated bypass
valve required if multiple thermostats
and zone motors are used)
1/2" Water Make Up
Back
Flow
Preventer
Expansion
Tank
High
Limit
Aquastat
Boiler
P-2
Drain
Cock
Manifold 2
Manifold 1
Install ball valves at all manifolds
(Allow spacing for future zone valve!)
Optional room thermostat & zone motors
(see ELECT 1.2-1.3 for rough in instruction)
Return/supply tie-in to be maximum
4 pipe diameters apart.
Auto Float
air vent
Optional
Flow Balancing
Globe Valve
if manifolds
are far apart.
Sidestream
Filter