Install Instructions

ManualsBrandsUponor ManualsHeating SuppliesTruFLOW R32 Replacement Manifold Gasket

INSTRUCTION SHEET

RADIANT HEATING SYSTEMS

TRUFLOW

JR.

MANIFOLD

Installing Actuators

The TruFLOW manifold comes

with black plastic caps mounted

on the r

eturn manif

old f

or manual

operation of the on/off valves. To

mount either the A3020522 Uponor

Mot

orized

alve Actuator (MVA) or

A3010522 Uponor Thermal Actuator,

follow the directions below.

emove the plastic cap by

loosening the lower ring with a

pair of pliers.

Install the included br

ass manif

old

adapter ring A2620028 (see

below). Tighten by hand.

3. Install actuator:

MVA (A3020522): Thread on

the MVA until it bottoms out

on the brass ring. The

alignment dot may not line up.

This will not affect the

operation of the end switch.

Thermal Actuator (A3010522):

Thread on the green plastic

ring until it bottoms out on

the brass ring. Snap on the

actuator head until you hear

two clicks indicating that both

sides of the actuators have

seated properly.

Maximum W

orking Pr

essur

145 psi

Maximum Fluid

Temperature

220°F

Manifold Flow Capacity 14 gpm

Loop Flow Capacity

= 1.9 gpm

Loop Connection R20

TruFLOW

Assemblies

TruFLOW

Jr. Manifold System

TruFLOW Jr. Manifold Specifications

The TruFLOW Jr. manifold assemblies

(

Figures 1 and 2 above) feature an

R32 union to connect either an

Uponor Manifold Adapter or any of

the TruFLOW Jr. add-on modular

manifolds (

Figures 3, 4 and 5 above).

Use a wrench to tighten the

connection.

Important: Be sure to use the flat

gasket supplied with the manifold.

Do not over-tighten the union

connection.

Summary of content (4 pages)

PAGE 1
3 RADIANT HEATING SYSTEMS T RU FLOW TM JR. MANIFOLD 2 INSTRUCTION SHEET 4 TruFLOWTM Jr. Assemblies 5 1 4 TruFLOW TM Jr. Manifold System The TruFLOW Jr. manifold assemblies (Figures 1 and 2 above) feature an R32 union to connect either an Uponor Manifold Adapter or any of the TruFLOW Jr. add-on modular manifolds (Figures 3, 4 and 5 above). Use a wrench to tighten the connection. Important: Be sure to use the flat gasket supplied with the manifold. Do not over-tighten the union connection. TruFLOW Jr.
PAGE 2
TruFLOW Jr. Manifold System 1 2 TruFLOW Jr. Manifold Assemblies (Dimensions in inches) No. Part No. Part Description A B C D E 1 A2660201 TruFLOW Jr. Assembly with Isolation and Balancing Valves, 2-loop 1.97 3.00 8.25 12.40 8.40 1 A2660301 TruFLOW Jr. Assembly with Isolation and Balancing Valves, 3-loop 1.97 3.00 8.25 12.40 10.34 1 A2660401 TruFLOW Jr. Assembly with Isolation and Balancing Valves, 4-loop 1.97 3.00 8.25 12.40 12.28 1 A2660501 TruFLOW Jr.
PAGE 3
TruFLOW Jr. Replacement Parts 12 1 6 13 14 15 9 2 16 4 10 5 11 18 14 3 19 18 8 7 17 No. Part No. Part Description No. Part No. Part Description A2641001 TruFLOW Jr. Manifold Basic End Cap, 1" BSP 1 A2642200 TruFLOW Jr. Manifold with Balancing Valves, 2-loop, 1" BSP 7 1 A2642300 TruFLOW Jr. Manifold with Balancing Valves, 3-loop, 1" BSP 8 A2661032 TruFLOW Jr.
PAGE 4
How to Determine Balancing Turns To balance the manifold correctly, determine the flow (gpm) and pressure drop (ft/hd) for each loop on the manifold. To find the required turns, follow directions below. 1. On the manifold to be balanced, find the loop with the highest pressure drop (ft/hd). This loop does not need any balancing, and will be fully open (4.25 turns from closed position). 2.